Magnetic type electromagnet automatic feeding machine

Abstract

The invention discloses a magnetic attraction type electromagnet automatic feeding machine, and relates to the technical field of feeding machines, the magnetic attraction type electromagnet automatic feeding machine comprises a shell, and further comprises a pretreatment device, the shell is provided with a feeding port, the back side of the shell is provided with a second sliding door, the feeding port is provided with a first sliding door, the pretreatment device is connected into the shell, and the input end of the pretreatment device is communicated with the feeding port; and the feeding mechanism is connected into the shell, and the input end of the feeding mechanism communicates with the output end of the pretreatment device. The feeding mechanism is arranged, a rotating feeding frame and a second electromagnet rotationally installed on the rotating feeding frame are used for magnetically attracting supplied screws to move, the screws pass through an outer diameter measuring sensor, a displacement sensor and a magneto-dependent sensor, and the outer diameter and the length of the screws are detected; the screw is magnetized to have a magnetic field, so that cracks and shrinkage cavity defects in the screw are further detected by detecting the magnetic leakage condition of the screw, and the detection effect on the screw is improved.

Description

Technical Field

[0001] The invention relates to the technical field of feeders, and in particular to a magnetic attraction type electromagnet automatic feeder. Background Art

[0002] The existing screw conveying mechanism is prone to getting stuck when conveying screws, which not only affects the screw conveying efficiency, but also easily damages the conveying mechanism, reduces the life of the screw conveying mechanism, and increases the scrap rate. In the prior art, a vibration plate mechanism is generally used to make the screws jump into the corresponding track for sorting according to the vibration of the vibration plate. When the vibration of the vibration plate is unstable, it is easy for the screws to fall into the non-specified track, thereby reducing the screw conveying effect.

[0003] In the prior art, a feeding drive mechanism is used to push the screws in the first hopper upward to complete the feeding operation, and a screw grabbing mechanism is used to grab the screws in the screw positioning holes on the turntable. In the above method, when the screws are conveyed, there is a lack of detection of the outer diameter, length and structural problems of the screws, which easily leads to the supply of unqualified screws affecting subsequent feeding and use operations. In addition, when feeding, the screws are not fixed while being conveyed one by one, which reduces the conveying effect of the screws. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that when conveying screws, there is a lack of detection of the outer diameter, length and structure of the screws, which easily leads to the supply of unqualified screws affecting subsequent feeding and use operations, and a magnetic electromagnet automatic feeder is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a magnetic electromagnet automatic feeder, comprising a housing, and also comprising: A pretreatment device, wherein a feed port is provided on the shell, and a second sliding door is installed on the back side, a first sliding door is installed at the feed port, the pretreatment device is connected in the shell, and the input end is connected to the feed port; A feeding mechanism, the feeding mechanism is connected in the housing, and the input end of the feeding mechanism is connected with the output end of the pre-processing device, and is used for feeding the screws one by one; A feeding mechanism, the feeding mechanism includes a stepper motor, a support plate is fixedly connected inside the shell, the stepper motor is installed on the support plate, and the output end is coaxially fixedly connected with a feeding rack, a plurality of rotating rods are fixedly connected to the outer peripheral side of the feeding rack, and an electromagnet 2 is rotatably installed on one end of the rotating rod away from the feeding rack, an outer diameter measuring sensor, a displacement sensor and a magnetic sensor are installed in the shell, the upper part of the output end of the feeding mechanism and the working ends of the outer diameter measuring sensor, the displacement sensor and the magnetic sensor are all located on the rotation track of the electromagnet 2, an inclined slideway 2 is fixedly connected to the bottom of the shell, a discharge port is opened at the bottom of the shell, the slideway 2 is located directly below the feeding rack, and the inclined bottom end extends out of the discharge port.

[0006] In the above-mentioned magnetic electromagnet automatic feeder, the pretreatment device includes a roller, which is fixedly connected in the shell and the input end is connected to the feed port. A driving motor is installed in the shell, and the end of the roller away from the feed port is coaxially fixedly connected to a rotating column, and the same transmission belt is sleeved between the output end of the driving motor and the rotating column. The roller is welded from a porous plate, and a through opening connected to the input end of the feeding mechanism is opened at the bottom of the other end of the roller. A cleaning mechanism is provided at the bottom of the roller, and a drying mechanism is provided on the outer peripheral side close to one end of the slideway, and the drying mechanism is located between the cleaning mechanism and the input end of the feeding mechanism. The cleaning mechanism is used for ultrasonic cleaning of the screws, and the drying mechanism is used for heating and drying the screws. An exhaust port is opened at the top of the shell, and the bottom of the exhaust port is connected to the inside of the space where the roller is located, and the input end is connected to the input end of the external exhaust fan.

[0007] In the above-mentioned magnetic electromagnet automatic feeder, the drum is spirally welded with blades made of porous plates, the spiral output direction of the blades points to the input end of the feeding mechanism, the drum is truncated cone-shaped, and the end with a smaller bottom diameter points to the input end of the feeding mechanism.

[0008] In the above-mentioned magnetic electromagnet automatic feeder, the feeding mechanism includes an inclined slideway 1, which is fixedly connected in the shell and the inclined bottom end points to the feeding mechanism. An electromagnet 1 is installed on one side of the slideway. A contact sensor and a counting sensor are installed on the slideway 1. The contact sensor is used to sense whether a screw passes by, and the counting sensor is used to record the screws that are magnetically attracted and taken away by the electromagnet 2. The inclined bottom end of the slideway 1 is located above the rotation track of the electromagnet 2.

[0009] In the above-mentioned magnetic electromagnet automatic feeder, the width of the slideway one away from the roller gradually decreases to a width that matches the clearance of the screw head, and a groove that matches the clearance of the screw tail is opened through the bottom, and the electromagnet one is installed on the side of the width changing part of the slideway one.

[0010] In the above-mentioned magnetic electromagnet automatic feeder, a limit plate is fixedly connected to the width change node of the slideway 1, the contact sensor is installed on the limit plate, and the limit plate and the slideway 1 form a channel for a screw to pass through.

[0011] In the above-mentioned magnetic attraction type electromagnet automatic feeder, the electromagnet 2 is semi-cylindrical, and its center of gravity is located below itself.

[0012] In the above-mentioned magnetic electromagnet automatic feeder, a slanted slideway three is fixedly connected to the bottom of the shell, and the slideway three is located directly below the outer diameter measuring sensor, the displacement sensor and the magnetic sensitive sensor, and the inclined bottom end extends through the shell and is connected to a collection box.

[0013] In the above-mentioned magnetic attraction type electromagnet automatic feeder, the outer diameter measuring sensor is used to measure the outer diameter specification of the screw, the displacement sensor is used to detect the length specification of the screw, and the magnetic sensitive sensor is used to detect the magnetic leakage of the screw.

[0014] In the above-mentioned magnetic suction electromagnet automatic feeder, the contact sensor, counting sensor, electromagnet one, stepper motor, electromagnet two, outer diameter measuring sensor, displacement sensor and magnetic sensitive sensor are all electrically connected to a controller, and the controller is installed on the outer casing. The controller receives signals from the contact sensor and the counting sensor to control the working state of electromagnet one, and receives signals from the stepper motor, outer diameter measuring sensor, displacement sensor and magnetic sensitive sensor to control the working state of electromagnet two.

[0015] Compared with the prior art, the advantages of the present invention are: 1. The present invention sets a feeding mechanism, through a rotating feeding frame and an electromagnet 2 rotatably mounted thereon, the screws supplied by magnetic adsorption move, so that the screws pass through an outer diameter measuring sensor, a displacement sensor and a magnetic sensitive sensor, and complete the detection of the outer diameter and length of the screws. At the same time, when the electromagnet 2 forms a magnetic attraction on the screws, the screws are magnetized and have a magnetic field, so that by detecting the leakage magnetic condition of the screws, cracks and shrinkage defects in the screws are further detected, thereby improving the detection effect of the screws, and controlling the removal of unqualified screws and the discharge of qualified screws by turning on and off the power of the electromagnet 2, thereby improving the feeding effect.

[0016] 2. The present invention provides a feeding mechanism, and through an electromagnet 1 installed on one side of the slide, it can form magnetic attraction for the screws passing through the slide 1, so that the screws are close to the inner wall of the slide 1 close to the electromagnet 1, effectively avoiding the screws from being placed horizontally in the slide 1, reducing the possibility of the slide 1 being blocked by screws, and improving the feeding effect. The screws are controlled to fall into the end of the slide one one by one by turning on and off the electromagnet 1, forming a one-by-one feeding effect, and further avoiding the occurrence of blockage on the slide.

[0017] 3. The present invention can perform ultrasonic cleaning and electromagnetic heating drying on the screws put into the drum by setting a pretreatment device, so as to prevent impurities on the screws from affecting their transportation in the slideway and the accuracy of detection when they move with the feeding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a working schematic diagram of a magnetic attraction type electromagnet automatic feeder proposed by the present invention; Figure 2 This is a rear-view axial side view of a magnetic-attraction electromagnet automatic feeder proposed by the present invention; Figure 3 A half-section axonometric view of a magnetic attraction type electromagnet automatic feeder proposed by the present invention; Figure 4 A partial enlarged view X of a magnetic-attraction electromagnet automatic feeder proposed by the present invention; Figure 5 It is a partial sectional isometric view of a magnetic attraction type electromagnet automatic feeder proposed by the present invention; Figure 6 A partially enlarged view Y of a magnetic-attraction electromagnet automatic feeder proposed by the present invention.

[0019] In the figure: 1, shell, 2, slide 1, 3, slide 2, 4, collection box, 5, roller, 6, cleaning mechanism, 7, drying mechanism, 8, feeding rack, 9, slide 3, 10, screw, 11, sliding door 1, 12, sliding door 2, 13, outer diameter measuring sensor, 14, displacement sensor, 15, magnetic sensor, 16, exhaust port, 21, limit plate, 22, contact sensor, 23, counting sensor, 24, electromagnet 1, 31, discharge port, 51, feed port, 52, drive motor, 81, support plate, 82, stepper motor, 83, rotating rod, 84, electromagnet 2. DETAILED DESCRIPTION

[0020] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0021] Reference Figure 1 to Figure 2 , a magnetic suction type electromagnet automatic feeder, comprising a housing 1, and also comprising: The pretreatment device has a feed port 51 on the outer shell 1 , and a second sliding door 12 is installed on the back side, and a first sliding door 11 is installed at the feed port 51 . The pretreatment device is connected in the outer shell 1 , and the input end is communicated with the feed port 51 .

[0022] Reference Figure 3 The pretreatment device includes a drum 5, which is fixedly connected in the shell 1, and the input end is connected to the feed port 51. A driving motor 52 is installed in the shell 1. The end of the drum 5 away from the feed port 51 is coaxially fixedly connected to a rotating column, and the same transmission belt is sleeved between the output end of the driving motor 52 and the rotating column. The drum 5 is welded with a porous plate, and a through hole connected to the input end of the feeding mechanism is opened at the bottom of the other end of the drum 5. A cleaning mechanism 6 is provided at the bottom of the drum 5, and a drying mechanism 7 is provided on the outer peripheral side near the end of the slideway 2. The drying mechanism 7 is located between the cleaning mechanism 6 and the input end of the feeding mechanism. The cleaning mechanism 6 is used for ultrasonic cleaning of the screw 10, and the drying mechanism 7 is used for heating and drying the screw 10. An exhaust port 16 is provided at the top of the shell 1, and the bottom of the exhaust port 16 is connected to the inside of the space where the drum 5 is located, and the input end is connected to the input end of the external exhaust fan.

[0023] The cleaning mechanism 6 adopts the ultrasonic cleaning equipment in the prior art to perform ultrasonic cleaning and discharge on the screws 10 , and the drying mechanism 7 adopts the electromagnetic heating equipment in the prior art to perform electromagnetic heating and drying on the metal screws 10 .

[0024] The drum 5 is spirally welded with blades made of porous plates, and the spiral output direction of the blades points to the input end of the feeding mechanism. The drum 5 is in a truncated cone shape, and the end with a smaller bottom diameter points to the input end of the feeding mechanism.

[0025] Reference Figure 3 , Figure 4 and Figure 6 , a feeding mechanism, which is connected in the housing 1, and whose input end is connected with the output end of the pretreatment device, is used to supply the screws 10 one by one.

[0026] The feeding mechanism includes an inclined slide 2, which is fixedly connected in the shell 1, and the inclined bottom end points to the feeding mechanism. An electromagnet 24 is installed on the side of the slide 2, and a contact sensor 22 and a counting sensor 23 are installed on the slide 2. The contact sensor 22 is used to sense whether the screw 10 passes by, and the counting sensor 23 is used to record the screw 10 magnetically attracted and taken away by the electromagnet 84. The rotation trajectory of the electromagnet 84 is located above the inclined bottom end of the slide 2.

[0027] The width of the end of the slideway 2 away from the roller 5 gradually decreases to a width that matches the head of the screw 10, and a groove that matches the tail of the screw 10 is opened through the bottom, and the electromagnet 24 is installed on the side of the width change part of the slideway 2.

[0028] A limit plate 21 is fixedly connected to the width change node of the slideway 1 2 , and the contact sensor 22 is installed on the limit plate 21 . The limit plate 21 and the slideway 1 2 form a channel for a screw 10 to pass through.

[0029] Reference Figure 5 and Figure 6 , feeding mechanism, the feeding mechanism includes a stepper motor 82, a support plate 81 is fixedly connected in the outer shell 1, the stepper motor 82 is installed on the support plate 81, and the output end is coaxially fixedly connected with a feeding rack 8, a plurality of rotating rods 83 are fixedly connected to the outer peripheral side of the feeding rack 8, and an electromagnet 2 84 is rotatably installed at one end of the rotating rod 8 away from the feeding rack 8, an outer diameter measuring sensor 13, a displacement sensor 14 and a magnetic sensor 15 are installed in the outer shell 1, and the upper part of the output end of the feeding mechanism and the working ends of the outer diameter measuring sensor 13, the displacement sensor 14 and the magnetic sensor 15 are all located on the rotation track of the electromagnet 2 84, and an inclined slideway 2 3 is fixedly connected to the bottom of the inner shell 1, and a discharge port 31 is opened at the bottom of the outer shell 1, and the slideway 2 3 is located directly below the feeding rack 8, and the inclined bottom end extends out of the discharge port 31.

[0030] The electromagnet 2 84 is semi-cylindrical in shape, and its center of gravity is located below itself.

[0031] The bottom of the housing 1 is fixedly connected with an inclined slideway 3 9 , which is located directly below the outer diameter measuring sensor 13 , the displacement sensor 14 and the magnetic sensor 15 , and the inclined bottom end thereof extends through the housing 1 and is connected with the collecting box 4 .

[0032] The outer diameter measuring sensor 13 is used to measure the outer diameter specification of the screw 10 , the displacement sensor 14 is used to detect the length specification of the screw 10 , and the magnetic sensor 15 is used to detect the magnetic leakage condition of the screw 10 .

[0033] The contact sensor 22, the counting sensor 23, the electromagnet 1 24, the stepping motor 82, the electromagnet 2 84, the outer diameter measuring sensor 13, the displacement sensor 14 and the magnetic sensor 15 are all electrically connected to a controller, and the controller is installed on the housing 1. The controller receives signals from the contact sensor 22 and the counting sensor 23 to control the working state of the electromagnet 1 24, and receives signals from the stepping motor 82, the outer diameter measuring sensor 13, the displacement sensor 14 and the magnetic sensor 15 to control the working state of the electromagnet 2 84.

[0034] In the present invention, the automatic screw feeding operation is applied to the automated production line. During operation, the screw 10 is put into the drum 5 through the feed port 51; The driving motor 52 works, and its output end drives the lower drum 5 to rotate at a constant speed through a belt. The drum 5 is welded with a porous plate. A cleaning mechanism 6 is provided at the bottom of the drum 5. The cleaning mechanism 6 performs ultrasonic cleaning on the screws 10 in the drum 5 to remove the oil stains carried by the screws 10. A blade made of a porous plate is spirally welded in the drum 5. As the drum 5 rotates, the screw 10 is pushed forward by the blade and continuously rolls and moves forward. A drying mechanism 7 is provided at the rear of the cleaning mechanism 6. The drying mechanism 7 heats and dries the screw 10 passing through by electromagnetic induction heating. The exhaust port 16 continuously exhausts air to remove the water vapor generated by drying, and condenses and discharges the water vapor through the special-shaped pipe; The dried screw 10 falls into the slideway 2 and slides down under the push of the blades. The electromagnet 24 is energized to generate a magnetic field to generate a magnetic attraction force on the screw 10 in the slideway 2. The screw 10 moves toward the electromagnet 24 while sliding down. The width of the rear part of the slideway 2 allows only one screw 10 to pass through, and the screws 10 are prevented from sliding down under the restriction of the limit plate 21. The screw 10 slides down to the end of the slideway 2, and a groove is provided at the bottom of the end to allow the tail of the screw 10 to pass through. After the screw 10 reaches the end, no matter whether the head or the tail of the screw 10 reaches the end of the slideway 2 first, the tail of the screw 10 will fall from the groove, ensuring that the head of the screw 10 is finally in the slideway 2; When the contact sensor 22 senses a screw 10 passing by, it immediately feeds back a signal to the controller, and the controller controls the electromagnet 1 24 to generate a magnetic field to magnetically attract the approaching screw 10, thereby preventing the subsequent screws 10 from continuing to slide down and causing material blockage; At the same time, under the magnetic attraction of the electromagnet 24, the subsequent screws 10 gradually adjust their directions to prevent the screws 10 from being placed horizontally in the slideway 2, thereby avoiding material blockage and ensuring smooth sliding of the screws 10 in the slideway 2; At this time, there is a screw 10 to be tested and supplied at the end of the slideway 1 2; The stepper motor 82 works, driving the feeding rack 8 to rotate indexingly, and the electromagnets 84 installed at the ends of the rotating rods 83 on the feeding rack 8 rotate accordingly. When the electromagnets 84 rotate indexingly to the end of the slideway 2, they are electrified to generate a magnetic field. Under the action of the magnetic force, the head of the screw 10 located in the slideway 2 is magnetically attracted by the electromagnets 84. As the rotating rods 83 rotate, the electromagnets 84 carry the screws 10 away from the slideway 2. The screw 10 is attracted and moves with the second electromagnet 84. The second electromagnet 84 is semi-cylindrical. Since the center of gravity is at the bottom, the cylindrical surface of the second electromagnet 84 is always at the bottom. The head of the screw 10 is attracted by the cylindrical surface of the second electromagnet 84 and moves clockwise. Under the influence of gravity, the screw 10 slides along the cylindrical surface and finally slides to the bottom point of the cylindrical surface, maintaining a vertical state with the head at the top and the tail at the bottom. The counting sensor 23 records the number of screws 10 magnetically attracted and carried away by the electromagnet 2 84, and feeds back a signal to the controller. The controller cuts off the power of the electromagnet 1 24. After losing the magnetic attraction of the electromagnet 1 24, the next screw 10 slides under the contact sensor 22 under the action of gravity. The electromagnet 1 24 is controlled to be energized again to magnetically adsorb and fix the subsequent screws 10. Repeating the action ensures the stable feeding of the slideway 2 one by one. As the rotating rod 83 rotates indexingly, the screw 10 first moves between the outer diameter measuring sensor 13 and the displacement sensor 14. The outer diameter measuring sensor 13 measures whether the outer diameter specification of the screw 10 is consistent with the setting, and the displacement sensor 14 detects whether the length of the screw 10 meets the setting range. If the detection data does not match the setting, the electromagnet 2 84 located here is controlled to be powered off, and the screw 10 loses the magnetic adsorption of the electromagnet 2 84 and then falls into the slideway 3 9 under the action of gravity to remove the mixed screws 10 of other specifications or the screws 10 whose length does not meet the requirements, to prevent the screws 10 of other specifications from entering the assembly line to affect the beat or even damage the equipment and products, to prevent the screws 10 whose length does not meet the requirements from entering the assembly line and causing accidents such as too short length, insufficient fastening force or too long length to penetrate the product, and the rotating rod 83 continues to rotate to allow the next screw 10 to enter for detection; If the detection data is consistent, the rotating rod 83 continues to rotate, so that the screw 10 enters the magnetic sensor 15, and is sucked by the electromagnet 2 84, and the screw 10 temporarily becomes a magnet and generates a magnetic field. The magnetic sensor 15 detects the leakage magnetic field of the screw 10 to infer defects such as cracks and shrinkage holes in the screw 10. If the defect exceeds the specified value, the electromagnet 2 84 is powered off and the screw 10 falls into the slideway 3 9, so as to ensure the quality of the screws 10 entering the assembly line, prevent the screws 10 from breaking, bending, etc. during the use of subsequent products, and improve the product quality. The problematic screw 10 falls into the slideway 3 9 and then slides into the collection box 4. The staff regularly pours out the screws 10 in the collection box 4 for processing, and the rotating rod 83 continues to rotate to allow the next screw 10 to enter for detection; The screw 10 with qualified specifications and quality follows the rotating rod 83 to rotate to the bottom, the electromagnet 84 is powered off to make the screw 10 enter the slide 3, and the screw 10 falls and slides down the slide 3 to the discharge port 31, waiting to be picked up by the assembly line robot; After the rotating rod 83 continues to rotate to the slide 12, it is powered to adsorb the screw 10, and the reciprocating cycle prevents the screw 10 from getting stuck while achieving stable transportation of the screw 10, eliminating the problem of long screws 10 being easily stuck or unstable in transportation when conveyed by conventional screw feeders such as vibration plate feeding, ensuring the quality of the screw 10 and preventing the mixing of screws 10 of other specifications, reducing the line stop rate and ensuring the quality of the line products.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic electromagnet automatic feeder, comprising a housing (1), characterized in that: Also includes: A pretreatment device, wherein a feed port (51) is provided on the housing (1), and a second sliding door (12) is installed on the back side, and a first sliding door (11) is installed at the feed port (51); the pretreatment device is connected to the housing (1), and the input end is in communication with the feed port (51); A feeding mechanism, the feeding mechanism is connected inside the housing (1), and the input end of the feeding mechanism is connected to the output end of the pre-processing device, and is used to supply the screws (10) one by one; A feeding mechanism, the feeding mechanism comprising a stepping motor (82), a support plate (81) being fixedly connected inside the housing (1), the stepping motor (82) being mounted on the support plate (81), and an output end thereof being coaxially fixedly connected to a feeding rack (8), a plurality of rotating rods (83) being fixedly connected to the outer peripheral side of the feeding rack (8), an electromagnet (84) being rotatably mounted on one end of the rotating rod (83) away from the feeding rack (8), an outer diameter measuring sensor (13), a position sensor (14) and a position sensor (15) being mounted inside the housing (1). The outer diameter measuring sensor (13), the displacement sensor (14) and the magnetic sensor (15) are arranged above the output end of the feeding mechanism and the working ends of the outer diameter measuring sensor (13), the displacement sensor (14) and the magnetic sensor (15) are all located on the rotation track of the second electromagnet (84). The bottom of the housing (1) is fixedly connected with a second inclined slideway (3). The bottom of the housing (1) is provided with a discharge port (31). The second slideway (3) is located directly below the feeding frame (8), and the inclined bottom end extends out of the discharge port (31).

2. The magnetic electromagnet automatic feeder according to claim 1, characterized in that: The pretreatment device comprises a roller (5), the roller (5) being fixedly connected in the housing (1), and the input end of the roller is connected to the feed port (51), a driving motor (52) is installed in the housing (1), the end of the roller (5) away from the feed port (51) is coaxially fixedly connected to a rotating column, the output end of the driving motor (52) and the rotating column are sleeved with the same transmission belt, the roller (5) is welded from a porous plate, the bottom of the other end of the roller (5) is provided with a through opening connected to the input end of the feeding mechanism, and the roller (5) ) is provided at the bottom, and a drying mechanism (7) is provided on the outer peripheral side close to one end of the slideway (2), the drying mechanism (7) is located between the cleaning mechanism (6) and the input end of the feeding mechanism, the cleaning mechanism (6) is used to ultrasonically clean the screws (10), and the drying mechanism (7) is used to heat and dry the screws (10), and an exhaust port (16) is provided at the top of the housing (1), the bottom of the exhaust port (16) is connected to the interior of the space where the drum (5) is located, and the input end is connected to the input end of an external exhaust fan.

3. The magnetic electromagnet automatic feeder according to claim 2, characterized in that: The roller (5) has blades made of porous plates welded in a spiral, and the spiral output direction of the blades points to the input end of the feeding mechanism. The roller (5) is in a truncated cone shape, and the end with a smaller bottom diameter points to the input end of the feeding mechanism.

4. The magnetic suction type electromagnet automatic feeder according to claim 2, characterized in that: The feeding mechanism comprises an inclined slideway (2), wherein the slideway (2) is fixedly connected in the housing (1) and the inclined bottom end points to the feeding mechanism. An electromagnet (24) is installed on the side of the slideway (2). A contact sensor (22) and a counting sensor (23) are installed on the slideway (2). The contact sensor (22) is used to sense whether a screw (10) passes by, and the counting sensor (23) is used to record the screw (10) that is magnetically attracted and taken away by the electromagnet (84). The upper part of the inclined bottom end of the slideway (2) is located on the rotation track of the electromagnet (84).

5. The magnetic suction type electromagnet automatic feeder according to claim 4, characterized in that: The width of the slideway 1 (2) at one end away from the roller (5) gradually decreases to a width that matches the clearance of the head of the screw (10), and a groove that matches the clearance of the tail of the screw (10) is formed through the bottom, and the electromagnet 1 (24) is installed on the side of the width changing portion of the slideway 1 (2).

6. The magnetic electromagnet automatic feeder according to claim 4, characterized in that: A limit plate (21) is fixedly connected to a width change node of the slideway 1 (2), the contact sensor (22) is mounted on the limit plate (21), and the limit plate (21) and the slideway 1 (2) form a channel for a screw (10) to pass through.

7. The magnetic electromagnet automatic feeder according to claim 1, characterized in that: The second electromagnet (84) is semi-cylindrical, and its center of gravity is located below itself.

8. The magnetic electromagnet automatic feeder according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to a slanted slideway (9), the slideway (9) being located directly below the outer diameter measuring sensor (13), the displacement sensor (14) and the magnetic sensor (15), and the slanted bottom end of the slideway (9) extends through the housing (1) and is connected to the material collecting box (4).

9. The magnetic electromagnet automatic feeder according to claim 4, characterized in that: The outer diameter measuring sensor (13) is used to measure the outer diameter specification of the screw (10), the displacement sensor (14) is used to detect the length specification of the screw (10), and the magnetic sensor (15) is used to detect the magnetic leakage condition of the screw (10).

10. The magnetic electromagnet automatic feeder according to claim 9, characterized in that: The contact sensor (22), the counting sensor (23), the first electromagnet (24), the stepping motor (82), the second electromagnet (84), the outer diameter measuring sensor (13), the displacement sensor (14) and the magnetic sensor (15) are all electrically connected to a controller, and the controller is mounted on the housing (1). The controller receives signals from the contact sensor (22) and the counting sensor (23) to control the working state of the first electromagnet (24), and receives signals from the stepping motor (82), the outer diameter measuring sensor (13), the displacement sensor (14) and the magnetic sensor (15) to control the working state of the second electromagnet (84).

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