An automatic material collecting device for magnetic core forming

Abstract

The present invention discloses an automatic material collecting device for magnetic core forming, belonging to the field of magnetic core manufacturing equipment, including a frame. A turntable assembly and a blanking chute assembly are installed on the frame. The turntable assembly includes a turntable and a turntable driving assembly. The blanking chute assembly includes a feeding port and a discharging port. A dial is arranged above the turntable for dialing the workpieces located far from the center on the turntable towards the center of the turntable. The dial can dial the magnetic cores falling on the turntable from the outer edge of the turntable to the middle of the turntable, thus avoiding collision with the subsequently falling magnetic cores and causing damage, and can simultaneously play the role of conveying and storing magnetic cores, solving the problem in the prior art that there is no special material collecting device for magnetic cores, and using ordinary material collecting devices has a high cost and is likely to cause the loss of precision of components.

Description

Technical Field

[0001] The present invention relates to a magnetic core manufacturing device, and more particularly to an automatic material collecting device for magnetic core forming. Background Art

[0002] A magnetic powder core is a soft magnetic material made by mixing ferromagnetic powder particles and an insulating medium and pressing them. It is manufactured by powder metallurgy process. Its special magnetic properties make it have advantages that are difficult to compare with other materials in many application scenarios. This material has become an important part of soft magnetic materials.

[0003] Since the magnetic powder core is manufactured by powder metallurgy process, it determines that one of the processes is powder pressing and forming. Currently, a hydraulic press or a mechanical press is generally used for pressing and forming, and the hydraulic press is more common. The product is pressed one by one by the press, and the worker takes it out and places it in the turnover tray. There is also an intermediate storage flat plate with mesh holes connected to the press. A certain number of products pushed out by the press can be stored here, and then the worker places them in the turnover tray.

[0004] Problems existing in the above-mentioned forming process are as follows: If each press presses one product and then the worker puts it into the turnover tray, one worker needs to be configured for each press, resulting in a large number of workers; while using the intermediate storage flat plate, a certain number of products can be stored, and the worker puts the products into the turnover tray after a period of time. In this way, one worker can watch multiple presses, which can reduce the number of workers to a certain extent. However, the products pushed out by the press will accumulate and collide on the intermediate storage flat plate, resulting in poor product quality and a small storage quantity.

[0005] With the development of technology and the continuous increase of labor costs, market competition is becoming increasingly fierce. It is required to promote the replacement of humans with machines during the product production process to reduce the labor cost of products and thus improve market competitiveness.

[0006] For example, the "Automatic Forming and Material Collecting Machine for Valve Guides" disclosed in the Chinese patent literature, with the publication number CN103496591B, includes a feeding device, a blowing device, an aligning device, and a blanking mechanism. Its disadvantages are that there are many linear motions in its blanking mechanism that need to be accurately controlled, resulting in a high cost. If it is used for material collection in magnetic core forming, the cost performance is relatively low. And because it contains many precision devices, and during the material collection process, the precision components are close to the workpiece, it is easy to be affected by the magnetism of the magnetic core, resulting in damage or loss of precision of the precision devices. Summary of the Invention

[0007] The present invention aims to overcome the deficiencies in the prior art. The existing material receiving equipment has a complex structure, includes many precision components, is easily affected by the magnetism of the magnetic core, and lacks dedicated automated equipment for magnetic core material receiving. The present invention provides an automatic material receiving device for magnetic core forming, which can achieve automatic material receiving of magnetic cores, has a simple structure, low cost, and is not affected by the magnetism of the magnetic core, and is suitable for material receiving of formed magnetic cores.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] The present invention relates to an automatic material receiving device for magnetic core forming, which includes a frame. A turntable assembly and a blanking chute assembly are installed on the frame. The turntable assembly includes a turntable and a turntable driving assembly. The blanking chute assembly includes a feeding port and a discharging port. The position of the feeding port is higher than that of the discharging port. The discharging port faces the center of the turntable. A paddle is provided above the turntable for pushing the workpiece located farther from the center on the turntable towards the center of the turntable.

[0010] The formed magnetic core will slide from the feeding port to the discharging port in the blanking chute under the action of gravity and fall onto the turntable. The magnetic core that falls onto the turntable rotates with the turntable under the action of friction. Therefore, when the next magnetic core falls, it will not hit the previous magnetic core, avoiding damage caused by magnetic core impact. When the magnetic core rotates to the position where the paddle is located, its circumferential movement is blocked. The frictional force generated by the turntable on the magnetic core can be decomposed into a component perpendicular to the paddle and a component parallel to the paddle. Among them, the component perpendicular to the paddle is offset by the supporting force of the paddle on the magnetic core, and the component parallel to the paddle will drive the magnetic core to move along the paddle, thereby guiding the magnetic core from the outer circle of the turntable to the middle of the turntable. Since the part driving the workpiece to move in this solution is circular, compared with the method of linearly moving the workpiece through a conveyor belt in a general material receiving device, the turntable in this solution not only plays the role of transporting the workpiece but also plays the role of buffer storage. Under the premise of occupying the same space, it can accommodate more workpieces. For the entire production line, its buffering capacity as a buffer is greatly improved. Moreover, in the prior art, workpieces are prone to collision when stacked and stored, while in this solution, through the rotation of the turntable, the workpieces enter the turntable from different directions, avoiding the collision of workpieces and reducing the possibility of defective products. In the prior art, if the workpieces are to enter the turntable from different directions, an additional motor is required to change the movement direction of the workpieces, resulting in more precision parts required. Not only the cost is high, but also the precision parts are easily damaged or lose precision under the influence of the magnetic core and are not suitable for material receiving of formed magnetic cores. In this solution, only one motor is required to drive the turntable to rotate, with low cost and suitable for material receiving of formed magnetic cores.

[0011] Preferably, a slideway installation part is included on the frame. The blanking slideway assembly is installed on the slideway installation part. Blanking slideway support shafts are installed on both sides of the blanking slideway. The blanking slideway support shafts are rotationally connected to the bearing seats. A snap ring for axially fixing the blanking slideway support shafts to the bearing seats is installed on the blanking slideway support shafts. By rotating the support shafts on the bearing seats, the inclination angle of the blanking slideway can be adjusted, thus avoiding the situation that the magnetic core falls too fast or falls out of the blanking slideway due to too large an inclination angle, or avoiding the situation that the magnetic core is difficult to fall due to too small an inclination angle, so that the device has better flexibility. In addition, by changing the inclination angle of the blanking slideway, it can also be adapted to magnetic core forming equipment with different heights.

[0012] Preferably, the frame includes a workbench. A turntable drive substrate is fixedly installed on the lower side of the workbench. A motor mounting plate is installed below the turntable drive substrate. The motor mounting plate and the turntable drive substrate are connected by a connecting rod. A motor for driving the turntable is installed on the motor mounting plate. A driving pulley is installed on the output shaft of the motor. A driven shaft is connected to the turntable. A driven pulley is installed on the driven shaft. A transmission belt is installed on the driving pulley and the driven pulley. The diameter of the driving pulley is smaller than that of the driven pulley. Since the rotational angular velocity of the turntable is slower than that of a general motor, during the transmission from the motor to the turntable, deceleration is required. And the driving pulley, the belt and the driven pulley can form a deceleration mechanism, so that the turntable has a suitable rotational speed. And the motor mounting plate and the turntable drive substrate can improve the stability of the deceleration mechanism.

[0013] Preferably, a motor adjustment plate and a pulley tensioning plate are installed on the motor mounting plate. The motor is fixedly connected to the motor adjustment plate. The pulley tensioning plate is fixedly connected to the motor mounting plate. The pulley tensioning plate and the motor adjustment plate are connected by a motor adjustment shaft. By moving the motor adjustment plate, the position of the motor relative to the pulley tensioning plate can be changed, thus changing the distance between the driving pulley and the driven pulley, and thus changing the tension of the belt, so that the belt can be in a relaxed state during installation and then tensioned after installation, making the installation more convenient.

[0014] Preferably, a vibration damping pad is installed between the turntable drive substrate and the workbench. Since the motor inevitably generates vibration during operation, if the vibration is transmitted to the turntable, it may cause the magnetic core on the turntable to shake, resulting in damage to the magnetic core due to collision. And the vibration damping pad can reduce the transmission of vibration, thus improving the stability of the turntable.

[0015] Preferably, an angular contact ball bearing for axial support is mounted on the driven shaft. The outer ring of the angular contact ball bearing is mounted in the mounting hole on the turntable drive substrate. The upper end of the angular contact ball bearing is fixed by an angular contact ball bearing end cap. A deep groove ball bearing for radial support is mounted on the driven shaft. The lower end of the deep groove ball bearing is fixed by a deep groove ball bearing end cap. The angular contact bearing can improve the axial bearing capacity of the driven shaft, thus avoiding the difficulty of turning the turntable due to excessive load on the turntable. The deep groove ball bearing can improve the radial bearing capacity of the driven shaft, thus avoiding the difficulty of turning the turntable due to large belt tension.

[0016] Preferably, the turntable includes a coaxial material receiving turntable and a material transferring turntable. The outer diameter of the material transferring turntable is smaller than that of the material receiving turntable. The upper side of the material transferring turntable is flush with the upper side of the material receiving turntable. When receiving materials, the magnetic core can be dialed from the material receiving turntable to the material transferring turntable by a dial. When it is necessary to batch transfer the magnetic cores stacked on the turntable, the material transferring turntable can be directly removed from the material receiving turntable, so as to transfer all the magnetic cores on the material transferring turntable at one time, without taking away the magnetic cores one by one, greatly reducing the workload of the operator and saving labor costs.

[0017] Preferably, a clamping groove is provided on the upper side of the material receiving turntable. A clamping portion adapted to be clamped with the clamping groove is provided on the lower side of the material transferring turntable. A guardrail for preventing the workpieces on the material transferring turntable from falling during material transfer is provided on the outer ring of the material transferring turntable. A handle is provided at the center of the material transferring turntable. The cooperation between the clamping portion and the clamping groove can ensure that when the material transferring turntable is located on the material receiving turntable, the two will not rotate relative to each other. The guardrail can ensure that the workpieces will not fall from the material transferring turntable during material transfer. The handle can facilitate the picking up of the material transferring turntable.

[0018] Preferably, the guardrail is annular. A guardrail receiving groove for receiving the guardrail is provided on the material transferring turntable. An elastic member is provided between the guardrail receiving groove and the guardrail. A first magnetic member is provided on the guardrail. A second magnetic member is provided on the material receiving turntable below the first magnetic member. When the material transferring turntable is located on the material receiving turntable, due to the magnetic force between the first magnetic member and the second magnetic member, the guardrail is sucked downward, so that it will not expose the material transferring turntable, thus facilitating the movement of the magnetic core from the material receiving turntable to the material transferring turntable. When the material transferring turntable is picked up from the material receiving turntable, the guardrail will pop up upward under the action of the elastic member, thus exposing the upper surface of the material transferring turntable, so as to prevent the magnetic core from falling. Through this structure, the automatic expansion and contraction of the guardrail is realized, making the material transfer more convenient and reliable.

[0019] Preferably, a guard rail groove adapted to the guard rail is provided on the material transfer turntable. The guard rail includes a plurality of retaining bars circumferentially and evenly distributed on the material transfer turntable. An arc-shaped retaining piece is provided at the upper end of the retaining bar. A plurality of connecting rods are connected below the handle. One end of the connecting rod is rotatably connected to the handle, and the other end of the connecting rod is rotatably connected to the retaining bar. When the handle is lifted, the end of the connecting rod connected to the handle moves upward relative to the turntable, so that the end of the connecting rod connected to the retaining bar moves towards the center of the material transfer turntable, causing the retaining bar to turn up and expose the surface of the material transfer turntable, thus preventing the magnetic core from falling. When the handle is pressed down, the guard rail will be pressed into the guard rail groove, which will not affect the magnetic core entering the material transfer turntable from the receiving turntable. Through this structure, the automatic expansion and contraction of the guard rail is realized, making the material transfer more convenient and reliable.

[0020] Therefore, the present invention has the following beneficial effects: (1) The turntable can simultaneously function as transporting and storing workpieces, thereby improving the utilization rate of space and having a better buffering effect on the entire production line; (2) Through the brush, the workpieces can be deburred and decelerated during the falling process, thus avoiding the workpieces being damaged due to excessive speed; (3) The length of the brush in the slideway can be adjusted to change the resistance of the brush to the workpieces; (4) The inclination angle of the slideway can be adjusted to improve the flexibility of the device; (5) It has good vibration damping effect and strong turntable stability; (6) A plurality of magnetic cores on the turntable can be moved at one time, improving the working efficiency of the operator; (7) The guard rail can prevent the magnetic core from falling when moving the magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention.

[0022] Figure 2 is a schematic cross-sectional view of the overall structure of Embodiment 1 of the present invention.

[0023] Figure 3 is an axonometric structural view of the blanking slideway part of Embodiment 1 of the present invention.

[0024] Figure 4 is a schematic cross-sectional view of the turntable drive part of Embodiment 1 of the present invention.

[0025] Figure 5 is a partially enlarged schematic structural view of the turntable drive part of Embodiment 1 of the present invention.

[0026] Figure 6 is a schematic top view of the turntable of Embodiment 2 of the present invention.

[0027] Figure 7 is a schematic cross-sectional view of the turntable of Embodiment 2 of the present invention.

[0028] Figure 8 It is a schematic top view structure of a turntable according to Embodiment 3 of the present invention.

[0029] Figure 9 It is a schematic cross-sectional view structure of a turntable according to Embodiment 3 of the present invention.

[0030] In the figure: 1 - blanking chute assembly, 2 - turntable drive assembly, 3 - frame, 4 - caster, 5 - bearing, 6 - turntable connecting shaft sleeve, 7 - turntable mounting plate, 8 - turntable, 9 - blanking chute support shaft, 10 - circlip, 11 - bearing seat, 12 - paddle, 13 - buffer zone, 14 - workbench, 15 - support foot, 16 - damping pad, 21 - blanking chute, 22 - brush mounting plate, 23 - brush plate adjusting shaft, 24 - brush plate fixing shaft sleeve, 25 - handle, 26 - brush, 31 - turntable drive base plate, 32 - connecting rod, 33 - motor mounting plate, 34 - angular contact ball bearing, 35 - driven shaft, 36 - driven pulley, 37 - motor adjusting plate, 38 - driving pulley, 39 - belt, 310 - angular contact ball bearing end cover, 311 - motor, 312 - driven pulley retaining ring, 313 - deep groove ball bearing, 314 - pulley tensioning plate, 315 - deep groove ball bearing end cover, 316 - motor adjusting shaft, 81 - material receiving turntable, 82 - material transferring turntable, 83 - card slot, 84 - clamping portion, 85 - guardrail, 86 - handle, 87 - guardrail storage groove, 88 - elastic member, 89 - first magnetic member, 810 - second magnetic member, 811 - guardrail groove, 812 - stop bar, 813 - stop piece, 814 - connecting rod. Specific embodiments

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Embodiment 1: As Figures 1 - 5An automatic material collecting device for magnetic core forming, comprising a frame 3. The frame includes a frame body part and a slideway installation part. Above the frame body part, there is a workbench 14. The slideway installation part is located on the side of the frame body part. At the four corners of the bottom of the frame, casters 4 are installed, and a telescopic support foot 15 is installed beside each caster. When the frame moves to a suitable position, it can be fixed by extending the support feet. A blanking slideway assembly 1 is installed on the slideway installation part. The blanking slideway assembly includes a blanking slideway 21. The cross-sectional shape of the blanking slideway is C-shaped. On both sides of the blanking slideway, blanking slideway support shafts 9 are installed. Two bearings 5 adapted to the blanking slideway support shafts are fixedly installed on the slideway installation part. The bearings are installed in bearing seats 11. A snap ring 10 for axially fixing the blanking slideway support shaft to the bearing seat is installed on the blanking slideway support shaft. On both sides of the blanking slideway, a brush mounting plate 22 is installed respectively. On the side of each brush mounting plate facing the outside of the blanking slideway, three brush plate fixing bushings 24 are provided. On both sides of the blanking slideway, three brush plate adjusting shafts 23 passing through the brush plate fixing bushings are provided respectively. On the brush plate fixing bushings, plum blossom-shaped handles 25 for locking the brush plate adjusting shafts are provided. On the side of the brush mounting plate facing the inside of the blanking slideway, four brushes 26 are installed. The brushes pass through the side wall of the blanking slideway. A turntable assembly is installed on the workbench. The turntable assembly includes a turntable 8, a turntable driving assembly 2, and a paddle 12. The paddle is located above the turntable. The direction of the paddle is determined according to the rotation direction of the turntable, but the extension line of the paddle does not pass through the center of the turntable. The length of the paddle is less than the radius of the turntable. The turntable driving assembly includes a turntable driving substrate 31 installed under the workbench. A vibration damping pad 16 is provided between the turntable driving substrate and the workbench. Below the turntable driving substrate, a motor mounting plate 33 is installed. The turntable driving substrate and the motor mounting plate are connected by four connecting rods 32. Below the motor mounting plate, there are a motor adjusting plate 37 and a pulley tensioning plate 314. The motor is fixedly connected to the motor adjusting plate. The pulley tensioning plate is fixedly connected to the motor mounting plate. The pulley tensioning plate and the motor adjusting plate are connected by a motor adjusting shaft 316. The motor adjusting shaft can be fixed by a pin. A motor 311 for driving the turntable is fixedly installed on the motor adjusting plate. A driving pulley 38 is installed on the output shaft of the motor.The lower side of the turntable is fixedly connected to the turntable mounting plate 7. A turntable connecting shaft sleeve 6 is provided on the lower side of the turntable mounting plate. A driven shaft 35 for driving the turntable is connected to the turntable connecting shaft sleeve. A driven pulley 36 is installed on the lower side of the driven shaft. A belt 39 is installed on the driven pulley and the driving pulley. The diameter of the driving pulley is smaller than that of the driven pulley. A driven pulley retaining ring 312 for preventing the driven pulley from disengaging from the driven shaft is installed at the lower end of the driven pulley; The driven pulley is located between the motor mounting plate and the turntable driving substrate. An angular contact ball bearing 34 for axial support is also installed on the driven shaft. The outer ring of the angular contact ball bearing is installed in the mounting hole on the turntable driving substrate. The upper end of the angular contact ball bearing is fixed by an angular contact ball bearing end cover 310. A deep groove ball bearing 313 for radial support is installed on the driven shaft. The lower end of the deep groove ball bearing is fixed by a deep groove ball bearing end cover 315; A buffer area 13 for temporarily storing magnetic cores is also provided on the workbench.

[0033] During the use of the device, the magnetic cores enter the blanking chute from the inlet of the blanking chute. Due to the inclination of the blanking chute, the magnetic cores will slide towards the outlet under the action of gravity. During the sliding process of the magnetic cores, they will be decelerated and deburred under the action of the brush; By loosening the handle, the length of the brush in the blanking chute can be adjusted to change the resistance of the brush to the magnetic cores; When the magnetic cores pass through the blanking chute, they will fall on the outer ring of the turntable and rotate together with the turntable under the action of friction. When the magnetic cores rotate to the position where the dial is located, their circumferential movement is blocked. The frictional force generated by the turntable on the magnetic cores can be decomposed into a component perpendicular to the dial and a component parallel to the dial. Among them, the component perpendicular to the dial is offset by the support force of the dial on the magnetic cores, and the component parallel to the dial will drive the magnetic cores to move along the dial, thereby guiding the magnetic cores from the outer ring of the turntable to the middle of the turntable; Since the magnetic cores enter the turntable from different directions, it is not easy for them to collide with each other. When the number of magnetic cores accumulated on the turntable is relatively large, the operator can centrally remove the magnetic cores, improving the material collection efficiency.

[0034] During the driving process from the motor to the turntable, the output shaft of the motor drives the driving pulley to rotate. The driving pulley drives the belt to move. The belt drives the driven pulley to rotate. The driven pulley drives the driven shaft to rotate. The driven shaft drives the turntable to rotate. By selecting the sizes of the driving pulley and the driven pulley, the reduction ratio from the motor to the turntable can be controlled. By adjusting the position of the motor adjustment plate, the tension of the belt can be changed.

[0035] Embodiment 2: As Figure 6 、 Figure 7The described automatic material collecting device for magnetic core forming, compared with the automatic material collecting device for magnetic core forming in Embodiment 1, is characterized in that: the turntable includes a coaxially arranged material collecting turntable 81 and a material transferring turntable 82, the outer diameter of the material transferring turntable is smaller than that of the material collecting turntable, the upper side surface of the material transferring turntable is flush with the upper side surface of the material collecting turntable, and the paddle does not block the material transferring turntable; a clamping groove 83 is provided on the upper side of the material collecting turntable, a clamping portion 84 adapted to be clamped with the clamping groove is provided on the lower side of the material transferring turntable, a guardrail 85 for preventing the workpieces on the material transferring turntable from falling during material transfer is provided on the outer ring of the material transferring turntable, and a handle 86 is provided at the center of the material transferring turntable; the guardrail is annular, a guardrail storage groove 87 for storing the guardrail is provided on the material transferring turntable, an elastic member 88 is provided between the guardrail storage groove and the guardrail, a first magnetic member 89 is provided on the guardrail, and a second magnetic member 810 located below the first magnetic member is provided on the material collecting turntable.

[0036] When it is necessary to transfer the magnetic cores on the turntable, the material transferring turntable can be lifted by the handle. After the material transferring turntable is lifted, the distance between the first magnetic member and the second magnetic member increases, and they are no longer affected by the magnetic force. The guardrail will pop out from the guardrail storage groove under the action of the elastic member, so as to prevent the magnetic cores from falling off the material transferring turntable; when the material transferring turntable is placed back on the material collecting turntable again, the clamping member is inserted into the clamping groove, and the material transferring turntable and the material collecting turntable are relatively fixed. The first magnetic member is sucked downward under the action of the magnetic force, so that the guardrail is stored in the guardrail storage groove, avoiding affecting the entry of the magnetic cores into the material transferring turntable.

[0037] Embodiment 3: As Figure 8 、 Figure 9 The described automatic material collecting device for magnetic core forming, compared with the automatic material collecting device for magnetic core forming in Embodiment 1, is characterized in that: the turntable includes a coaxially arranged material collecting turntable 81 and a material transferring turntable 82, the outer diameter of the material transferring turntable is smaller than that of the material collecting turntable, the upper side surface of the material transferring turntable is flush with the upper side surface of the material collecting turntable, and the paddle does not block the material transferring turntable; a clamping groove 83 is provided on the upper side of the material collecting turntable, a clamping portion 84 adapted to be clamped with the clamping groove is provided on the lower side of the material transferring turntable, a guardrail 85 for preventing the workpieces on the material transferring turntable from falling during material transfer is provided on the outer ring of the material transferring turntable, and a handle 86 is provided at the center of the material transferring turntable; a guardrail groove 811 adapted to the guardrail is provided on the material transferring turntable, the guardrail includes a plurality of blocking rods 812 circumferentially and evenly distributed on the material transferring turntable, an arc-shaped blocking piece 813 is provided at the upper end of the blocking rod, a plurality of connecting rods 814 are axially and evenly connected below the handle, one end of the connecting rod is rotatably connected to the handle, the other end of the connecting rod is rotatably connected to the blocking rod, and the connecting rod and the blocking rod are connected by a rotating shaft.

[0038] When it is necessary to transfer the magnetic core on the transfer turntable, the transfer turntable can be picked up by the handle. After the transfer turntable is picked up, the handle moves upward relative to the transfer turntable. The handle pulls the blocking rod upward through the connecting rod, and after the blocking rod and the blocking piece are turned up together, they can prevent the magnetic core from falling off the transfer turntable. When the transfer turntable is placed back on the receiving turntable again, the clamping part is inserted into the card slot, and the transfer turntable and the receiving turntable are relatively fixed. At the same time, the handle moves downward relative to the transfer turntable, and the blocking rod is pressed back into the guardrail groove again to avoid affecting the entry of the magnetic core into the transfer turntable.

Claims

1. An automatic material collecting device for magnetic core forming, characterized in that, It includes a frame, on which a turntable assembly and a blanking chute assembly are installed. The turntable assembly includes a turntable and a turntable driving assembly. The blanking chute assembly includes a feeding port and a discharging port. The position of the feeding port is higher than that of the discharging port. Above the turntable, there is a paddle for pushing the workpieces located farther from the center on the turntable towards the center of the turntable. The turntable includes a coaxially arranged material receiving turntable and a material transferring turntable. On the outer ring of the material transferring turntable, there is a guardrail for preventing the workpieces on the material transferring turntable from falling during material transfer. The guardrail is annular. On the material transferring turntable, there is a guardrail receiving groove for receiving the guardrail. Between the guardrail receiving groove and the guardrail, there is an elastic member. On the guardrail, there is a first magnetic member, and on the material receiving turntable, there is a second magnetic member located below the first magnetic member, or on the material transferring turntable, there is a guardrail groove adapted to the guardrail.

2. The automatic material collecting device for magnetic core forming according to claim 1, characterized in that, On the frame, there is a chute installation part, and the blanking chute assembly is installed on the chute installation part. On both sides of the blanking chute, there are blanking chute support shafts installed. On the chute installation part, two bearings adapted to the blanking chute support shafts are fixedly installed. The bearings are installed in bearing seats, and the blanking chute support shafts are rotatably connected to the bearing seats. On the blanking chute support shafts, there are snap rings for axially fixing them to the bearing seats.

3. The automatic material collecting device for magnetic core forming according to claim 1 or 2, characterized in that, The frame includes a workbench. Below the workbench, a turntable driving base plate is fixedly installed. Below the turntable driving base plate, a motor mounting plate is installed. The motor mounting plate and the turntable driving base plate are connected by a connecting rod. On the motor mounting plate, there is a motor for driving the turntable. On the output shaft of the motor, there is a driving pulley. On the turntable, there is a driven shaft connected, and on the driven shaft, there is a driven pulley. A transmission belt is installed on the driving pulley and the driven pulley. The diameter of the driving pulley is smaller than that of the driven pulley.

4. The automatic material collecting device for magnetic core forming according to claim 3, characterized in that, On the motor mounting plate, there are a motor adjusting plate and a pulley tensioning plate installed. The motor is fixedly connected to the motor adjusting plate. The pulley tensioning plate is fixedly connected to the motor mounting plate. The pulley tensioning plate and the motor adjusting plate are connected by a motor adjusting shaft.

5. The automatic material collecting device for magnetic core forming according to claim 3, characterized in that, A vibration damping pad is installed between the turntable driving base plate and the workbench.

6. The automatic material collecting device for magnetic core forming according to claim 3, characterized in that, On the driven shaft, there is an angular contact ball bearing for axial support. The outer ring of the angular contact ball bearing is installed in the installation hole on the turntable driving base plate. The upper end of the angular contact ball bearing is fixed by an angular contact ball bearing end cover. On the driven shaft, there is a deep groove ball bearing for radial support. The lower end of the deep groove ball bearing is fixed by a deep groove ball bearing end cover.

7. An automatic material collecting device for magnetic core forming according to claim 1, characterized in that, The outer diameter of the material transferring turntable is smaller than that of the material receiving turntable, and the upper side surface of the material transferring turntable is flush with the upper side surface of the material receiving turntable.

8. The automatic material collecting device for magnetic core forming according to claim 7, wherein, On the upper side of the material receiving turntable, there is a card slot. On the lower side of the material transferring turntable, there is a clamping part adapted to and clamped with the card slot. In the center of the material transferring turntable, there is a handle.

9. The automatic material collecting device for magnetic core forming according to claim 8, characterized in that, The guardrail includes a number of retaining rods circumferentially and evenly distributed on the material transfer turntable. An arc-shaped retaining piece is provided at the upper end of the retaining rod. A number of connecting rods are connected below the handle. One end of the connecting rod is rotatably connected to the handle, and the other end of the connecting rod is rotatably connected to the retaining rod.

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