Raw material bar continuous feeding system and method thereof

Abstract

The invention belongs to the field of vacuum melting powder manufacturing equipment, and provides a raw material bar continuous feeding system and a method thereof.The raw material bar continuous feeding system comprises a feeding bin, a vacuum transition bin and a bar feeding bin, the feeding bin is arranged at the top of the transition bin through a first valve, and the bar feeding bin is arranged at the bottom of the transition bin through a second valve; a bar pushing mechanism is arranged on the feeding bin, a bar translation mechanism is arranged in the transition bin, a first bar feeding mechanism is arranged in the bar feeding bin, the bar pushing mechanism pushes bars from the feeding bin to the translation mechanism, and the translation mechanism conveys the bars to the position above the first feeding mechanism. The bars automatically enter the first bar feeding mechanism through the gravity of the bars or the second bar feeding mechanism on the transition bin, and the first bar feeding mechanism conveys the bars downwards. Continuous feeding of bars can be achieved, the feeding bin can load a plurality of raw material bars at a time, powder materials can be produced through continuous atomization, the productivity in unit time is about one time larger than that of traditional similar equipment, the production efficiency is greatly improved, tailings are avoided, raw materials are saved, and the product quality is high.

Description

Technical Field

[0001] The invention relates to the field of vacuum melting powder making equipment, in particular to a raw material bar continuous feeding system and method thereof. Background Art

[0002] Traditional melting powder making is to melt the metal raw materials in a smelting furnace, and then atomize or evaporate to directly cool under specific conditions to prepare metal powder, or to atomize or evaporate and then combine with plasma to cool to obtain the metal powder required for powder. In addition, the raw materials of the conventional preparation method are all metal powder, wire or block raw materials. After the powder preparation is completed by smelting in the smelting furnace, a lot of tailings will remain in the smelting furnace, reducing the utilization rate of the raw materials. In addition, there is currently no specific equipment for continuous conveying of rods under specific conditions, and only one-time conveying production can be carried out. Vacuum transition cannot be achieved, impurities are easily carried, and the rod feeding cycle is long and the production capacity is low. Therefore, it is a technical problem that urgently needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a raw material bar continuous feeding system and method which is suitable for use in specific environments, can reduce impurity carryover, has high production efficiency, has a short cycle and can achieve continuous and uninterrupted conveying of bars, and can also correct the deviation during the bar conveying process to prevent the bars from getting stuck.

[0004] The technical solution of the present invention is: a continuous feeding system for raw material bars, including a feeding bin, a vacuum transition bin and a bar feeding bin, the feeding bin is arranged at the top of the transition bin through a first valve, and the bar feeding bin is arranged at the bottom of the transition bin through a second valve; a bar pushing mechanism is provided on the feeding bin, a bar translation mechanism is provided in the transition bin, and a first bar feeding mechanism is provided in the bar feeding bin, the bar pushing mechanism pushes the bars from the feeding bin to the translation mechanism, the translation mechanism sends the bars to the top of the first feeding mechanism, the bars automatically enter the first rod feeding mechanism through their own gravity or the second rod feeding mechanism on the transition bin, and the first rod feeding mechanism transports the bars downward.

[0005] The advantage of this solution is that, through the mutual combination of the feeding bin, the vacuum transition bin and the rod feeding bin, the raw material rods can be continuously conveyed under vacuum, reducing impurities carried by the raw materials while ensuring the convenience of rod transportation; the raw material rods are rods with external threads at the lower ends, and the upper ends of the rods can be tapped by the second rod feeding mechanism during the transportation process, so that the rods can be combined up and down during the rotating transportation process, and the rods can enter the melting chamber uninterruptedly, ensuring the continuous supply of raw materials.

[0006] Furthermore, the second rod feeding mechanism includes a driving device and a tapper, the driving device drives the screw rod to move up and down through a transmission gear, and a tapper is provided at the lower end of the screw rod, and the tapper is located directly above the first rod feeding mechanism. Preferably, the tapper is not withdrawn temporarily after tapping, the rod is conveyed downward and the rod is connected to the rod below through a thread end to end by rotation, and the tapper is withdrawn after the connection is completed and conveyed, thereby ensuring that the rod is conveyed downward without interruption.

[0007] Furthermore, the translation mechanism includes a rotating frame and a second drive motor, the second drive motor is arranged at the bottom of the vacuum transition chamber, the second drive motor is connected to the rotating frame through a drive shaft, and a damping clamping mechanism is arranged on the rotating frame, and at least two damping clamping mechanisms are arranged in the vertical direction. Preferably, when the rod is installed on the rotating frame, the damping clamping mechanism is located at both ends of the rod to ensure the fixing effect of the rod.

[0008] Furthermore, at least one damping clamping mechanism is provided in the circumferential direction. Preferably, at least one sub-bracket is provided on the rotating frame, and each sub-bracket is provided with two damping clamping mechanisms in the vertical direction through a cross bar; more preferably, the rotating frame is provided with 2-8 sub-brackets, and the sub-brackets are an even number or an odd number. When the sub-brackets are an even number, loading or unloading can be performed at both ends of the rotating frame at the same time to ensure force balance at both ends of the rotating frame.

[0009] Furthermore, the translation mechanism includes a slide rail, a damping clamping mechanism and a driving device. The resistance clamping mechanism is arranged on the slide rail, the driving device is arranged at one end of the slide rail, and limit switches are provided at both ends of the slide rail. The damping clamping mechanism is driven by the driving device to move between the limit switches, and ensures that the damping clamping mechanism is aligned with the pushing rod mechanism and the first feeding rod mechanism respectively when forming the starting point and the end point.

[0010] Furthermore, the feed bin includes a housing, a dividing plate and a first drive motor, wherein the dividing plate is installed in the housing through a rotating shaft, and the rotating shaft is driven by the first drive motor outside the housing. The first drive motor drives the rotating plate to rotate to transport the rods to the bottom of the rod pushing mechanism, and the rod pushing mechanism continuously pushes the rods downward. The use of the dividing plate can increase the storage capacity of a single rod, reduce the number of times the rods are added, and improve the transportation efficiency.

[0011] Furthermore, a push rod mechanism is provided on one side of the top of the housing, and a raw material bar inlet is provided on the other side. The push rod mechanism is aligned with the damping clamping mechanism directly below, so that the push rod mechanism can accurately push the bar onto the damping clamping mechanism, and the inlet is arranged to facilitate loading the raw material bar onto the indexing plate.

[0012] Furthermore, the shell is provided with a vacuum interface and a gas charging interface, the vacuum interface is provided at the lower end of the shell, the gas charging interface is provided at the upper end of the shell, and a pressure sensor is provided at the top of the shell. Preferably, after a single loading onto the indexing plate is completed, the inside of the shell is evacuated through the vacuum interface, and the vacuum degree is observed through the pressure sensor, thereby avoiding air contamination during the bar feeding process.

[0013] Furthermore, the vacuum transition chamber is rectangular, and a maintenance door is provided on one side of the vacuum transition chamber. The provision of the maintenance door facilitates maintenance of the translation mechanism.

[0014] Furthermore, the first rod feeding mechanism includes a driven wheel, a driving wheel and a deviation correction guide wheel, the driving wheel and the driven wheel are respectively mounted on vertically parallel vertical plates in the feeding bin, the driving wheel is driven by a driving device outside the feeding bin, and a buffer spring is provided on the driven wheel; the deviation correction guide wheel is mounted on the vertical plate and is located above the driving wheel and the driven wheel. Preferably, a limit seat is also provided at the lower end of the first rod feeding mechanism, and a through hole is provided in the middle of the limit seat for the rod to pass through, so as to ensure that the rod can pass through accurately, and the limit seat works in conjunction with the deviation correction guide wheel, the driving wheel and the driven wheel to ensure that the rod enters the melting chamber below in the correct posture.

[0015] A method for continuously feeding raw material bars adopts the above-mentioned continuous feeding system for raw material bars for feeding. First, a bar with a blind hole at one end and an external thread at the other end is transported downward to a translation mechanism through a rod pushing mechanism under a vacuum environment. The translation mechanism moves the bar on a plane to between the rod feeding mechanisms. The blind hole of the bar is tapped by the upper rod feeding mechanism and transported downward, so that the bar is connected to the lower bar through a thread and is transported into a melting chamber through the rod feeding mechanism below to correct the deviation.

[0016] The present invention has the following characteristics: 1. The present invention realizes continuous and uninterrupted feeding of rods through the mutual cooperation of the feed bin, the transition bin and the feeding bin. The two sets of sealed loading systems work in mutual backup. The feed bin can load multiple raw material rods at a time, and continuously atomize to produce powder materials. The production capacity per unit time is about twice that of traditional similar equipment, and the production efficiency is greatly improved. There is no tailing of raw material rod production, which saves raw materials and produces better product quality consistency.

[0017] 2. The setting of the feed bin can also reduce the air pollution of the rods and ensure the purity of the rods. The translation mechanism in the transition bin translates the rods on the horizontal plane to just above the first rod feeding mechanism, and combines with the second rod feeding mechanism to realize the uninterrupted transportation of the rods with the upper and lower ends connected.

[0018] 3. The first rod feeding mechanism ensures that the rod enters the melting chamber in the correct posture through the combination of the deviation-correcting guide wheel and the driving wheel, the driven wheel and the limit seat, thereby ensuring the accuracy and effect of the conveying.

[0019] The detailed structure of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 - is a schematic diagram of the structure of the present invention; Figure 2 - is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 -for Figure 1 A partial enlarged schematic diagram of part A; Figure 4 - is a schematic diagram of the rod feeding bin structure; 1-the second rod feeding mechanism, 2-the rod pushing mechanism, 3-the feeding bin, 4-the first valve, 5-the first driving motor, 6-the translation mechanism, 7-the inspection door, 8-the second valve, 9-the first rod feeding mechanism, 10-the pressure sensor, 11-the inflation interface, 12-the vacuum interface, 13-the rod, 14-the damping clamping mechanism, 15-the crossbeam, 16-the bushing, 17-the second driving motor, 18-the locating pin, 19-the driving shaft, 20-the tapping device, 21-the vertical plate, 22-the bolt pull rod, 23-the deviation correction guide wheel, 24-the driven wheel, 25-the limit seat, 26-the driving wheel, 27-the transmission chain. DETAILED DESCRIPTION

[0021] As shown in the accompanying drawings: a continuous feeding system for raw material bars, including a feed bin 3, a vacuum transition bin and a bar feeding bin, the feed bin 3 is arranged at the top of the transition bin through a first valve 4, and the bar feeding bin is arranged at the bottom of the transition bin through a second valve 8; a bar pushing mechanism 2 is provided on the feed bin 3, a bar translation mechanism 6 is provided in the transition bin, and a first bar feeding mechanism 9 is provided in the bar feeding bin, the bar pushing mechanism 2 pushes the bar 13 from the feed bin 3 to the translation mechanism 6, the translation mechanism 6 sends the bar 13 to the top of the first feeding mechanism, the bar 13 automatically enters the first rod feeding mechanism 9 by its own gravity or the second rod feeding mechanism 1 on the transition bin, and the first rod feeding mechanism 9 transports the bar 13 downward.

[0022] Preferably, the second rod feeding mechanism 1 includes a driving device and a tapper 20. The driving device drives the screw rod to move up and down through a transmission gear. The lower end of the screw rod is provided with a tapper 20, and the tapper 20 is located directly above the first rod feeding mechanism 9. Preferably, the tapper 20 is not withdrawn temporarily after tapping, and the rod 13 is conveyed downward and connected to the rod 13 below by threading through rotation. After the connection is completed and conveyed, the tapper 20 is withdrawn, thereby ensuring that the rod 13 is conveyed downward without interruption.

[0023] In the embodiment, the vacuum transition chamber is rectangular, and one side of the vacuum transition chamber is provided with an inspection door 7. The provision of the inspection door 7 facilitates the inspection and maintenance of the translation mechanism 6.

[0024] This solution realizes continuous conveying of raw material rods 13 under vacuum through the mutual combination of the feed bin 3, the vacuum transition bin and the rod feeding bin, thereby reducing impurities carried by the raw material and ensuring the convenience of conveying the rods 13; the raw material rods 13 are rods 13 with external threads at the lower end, and the upper end of the rods 13 can be tapped by the second rod feeding mechanism 1 during the conveying process, so that the rods 13 can be combined up and down during the rotating conveying process of the rods 13, and the rods 13 can enter the melting chamber uninterruptedly to ensure the continuous supply of raw materials.

[0025] In the embodiment, the translation mechanism 6 includes a rotating frame and a second drive motor 17, the second drive motor 17 is arranged at the bottom of the vacuum transition chamber, the second drive motor 17 is connected to the rotating frame through a drive shaft 19, and a damping clamping mechanism 14 is arranged on the rotating frame, and at least two damping clamping mechanisms 14 are arranged in the vertical direction. Preferably, when the rod 13 is installed on the rotating frame, the damping clamping mechanism 14 is located at both ends of the rod 13 to ensure the fixing effect of the rod 13. Preferably, at least one damping clamping mechanism 14 is arranged in the circumferential direction. Preferably, the rotating frame includes a fixed shaft and a plurality of sub-brackets, the sub-brackets are installed and fixed on the fixed shaft through a shaft sleeve 16, a positioning pin 18 is provided on the shaft sleeve 16, and the lower end of the fixed shaft is connected to the driving shaft 19, so that the rotating frame is driven to rotate by the driving motor 17; preferably, at least one sub-bracket is arranged on the rotating frame, and two damping clamping mechanisms 14 are arranged in the vertical direction of each sub-bracket through a cross bar; preferably, the sub-bracket is two parallel beams 15, and the damping clamping mechanisms 14 are arranged on the opposite sides of the beams 15, and the damping clamping mechanisms 14 are located on the same vertical line; more preferably, the rotating frame is provided with 2-8 sub-brackets and is divided into upper and lower layers, so that both ends of the rod 13 are fixed by two damping clamping mechanisms 14, and the sub-brackets are an even number or an odd number. When the sub-brackets are an even number, loading or unloading can be carried out at both ends of the rotating frame at the same time to ensure the force balance at both ends of the rotating frame; in this embodiment, three sub-brackets are arranged on the rotating frame to ensure the continuous supply of rods 13.

[0026] In another embodiment, the translation mechanism 6 (not shown) includes a slide rail, a damping clamping mechanism 14 and a driving device. The resistance clamping mechanism is arranged on the slide rail, and the driving device is arranged at one end of the slide rail. In order to ensure the smooth movement of the resistance clamping mechanism, two upper and lower slide rails are arranged, and limit switches are arranged at both ends of the slide rails. The damping clamping mechanism 14 is driven by the driving device to move between the limit switches, and ensure that the damping clamping mechanism 14 is aligned with the pushing rod mechanism 2 and the first rod feeding mechanism 9 respectively when forming the starting point and the end point. A second rod feeding mechanism 1 is also arranged above the first rod feeding mechanism 9, which is used to push the plate into the first rod feeding mechanism 9, so that the damping clamping mechanism 14 moves back and forth on the slide rail to realize horizontal transportation of the rod 13.

[0027] In the embodiment, the feed bin 3 includes a shell, a dividing plate and a first drive motor 5, the dividing plate is installed in the shell through a rotating shaft, and the rotating shaft is driven by the first drive motor 5 outside the shell. The first drive motor 5 drives the rotating plate to rotate to transport the rod 13 to the bottom of the push rod mechanism 2, and the push rod mechanism 2 continuously pushes the rod 13 downward. The use of the dividing plate can increase the storage capacity of the single rod 13, reduce the number of times the rod 13 is added, and improve the conveying efficiency. Preferably, a push rod mechanism 2 is provided on one side of the top of the shell, and an inlet for the raw material rod 13 is provided on the other side. The damping clamping mechanism 14 is aligned directly below the push rod mechanism 2, so that the push rod mechanism 2 can accurately push the rod 13 onto the damping clamping mechanism 14, and the inlet is arranged to facilitate loading the raw material rod 13 onto the dividing plate. More preferably, a vacuum interface 12 and an air charging interface 11 are also provided on the shell, the vacuum interface 12 is arranged at the lower end of the shell, the air charging interface 11 is arranged at the upper end of the shell, and a pressure sensor 10 is also provided on the top of the shell. Preferably, after a single loading onto the dividing plate is completed, the inside of the shell is evacuated through the vacuum interface 12, and the vacuum degree is observed through the pressure sensor 10, so as to avoid air contamination during the feeding process of the rods 13.

[0028] In the embodiment, the first rod feeding mechanism 9 includes a driven wheel 24, a driving wheel 26 and a deviation correction guide wheel 23. The driving wheel 26 and the driven wheel 24 are respectively mounted on the vertical parallel plates 21 in the feeding bin. The two parallel vertical plates 21 are fixedly connected by bolt pull rods 22. The driving wheel 26 is driven by a driving device outside the feeding bin. The driven wheel 24 is provided with a buffer spring. The deviation correction guide wheel 23 is mounted on the vertical plate 21 and is located above the driving wheel 26 and the driven wheel 24. Preferably, the driving wheel 26 is driven by a transmission chain 27 outside the feeding bin. A limit seat 25 is further provided at the lower end of the first rod feeding mechanism 9. A through hole is provided in the middle of the limit seat 25 for the rod 13 to pass through, so as to ensure that the rod 13 can pass through accurately. The limit seat 25 works in conjunction with the deviation correction guide wheel 23, the driving wheel 26 and the driven wheel 24 to ensure that the rod 13 enters the melting chamber below in a correct posture.

[0029] The present invention realizes continuous and uninterrupted feeding of the rod 13 through the mutual cooperation of the feed bin 3, the transition bin and the feeding bin. The two sets of sealed loading systems work in mutual backup. The feed bin 3 can realize single loading of multiple raw material rods, and continuously atomize to produce powder materials. The unit time capacity is about twice that of traditional similar equipment, and the production efficiency is greatly improved. There is no tail material of raw material rod production, which saves raw materials and produces better quality consistency of products. The setting of the feed bin 3 can also reduce the pollution of the rod 13 by air, ensure the purity of the rod 13, and the translation mechanism 6 in the transition bin translates the rod 13 on the horizontal plane to the top of the first rod feeding mechanism 9, and realizes the uninterrupted transportation of the rod 13 by connecting the upper and lower ends of the rod 13 through the combination with the second rod feeding mechanism 1. The first rod feeding mechanism 9 ensures that the rod 13 enters the melting chamber in the correct posture through the combination between the deviation correction guide wheel 23 and the driving wheel 26, the driven wheel 24, and the limit seat 25, thereby ensuring the accuracy and effect of transportation.

[0030] Embodiment 2 A method for continuously feeding raw material bars 13, using the continuous feeding system for raw material bars 13 in the above-mentioned embodiment 1 to convey the raw material bars 13, firstly, a bar 13 with a blind hole at one end and an external thread at the other end is conveyed downward to a translation mechanism 6 under a vacuum environment through a rod pushing mechanism 2 located above a feeding bin, and the translation mechanism 6 moves the bar 13 translationally or rotationally on a plane to between a first rod feeding mechanism 9 and a second rod feeding mechanism 1, and the blind hole of the bar 13 is tapped by the second rod feeding mechanism 1 above, and after the tapping is completed, the tapper 20 on the second rod feeding mechanism 1 does not withdraw and continues to rotate to convey the bar 13 downward, so that the bar 13 is connected to the bar 13 on the first rod feeding mechanism 9 below by threads, and after the connection is completed, the tapper 20 is withdrawn, and then the first rod feeding mechanism 9 below is used to correct the deviation and convey it into the melting chamber, thereby completing the uninterrupted conveying of the entire bar 13.

[0031] The above are preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, any obvious changes such as equivalent transformations, simple replacements, etc. based on the technical solution of the present invention, without departing from the spirit and scope of the present invention, are within the scope of protection of the present invention.

Claims

1. A continuous feeding system for raw material bars, comprising a feed bin, a vacuum transition bin and a bar feeding bin, wherein the feed bin is arranged at the top of the transition bin through a first valve, and the bar feeding bin is arranged at the bottom of the transition bin through a second valve; characterized in that: The feed bin is provided with a rod pushing mechanism, the transition bin is provided with a rod translation mechanism, and the rod feeding bin is provided with a first rod feeding mechanism. The rod pushing mechanism pushes the rods from the feed bin to the translation mechanism, and the translation mechanism sends the rods to the top of the first feeding mechanism. The rods automatically enter the first rod feeding mechanism through their own gravity or the second rod feeding mechanism on the transition bin, and the first rod feeding mechanism transports the rods downward.

2. The raw material bar continuous feeding system according to claim 1, characterized in that: The second rod feeding mechanism includes a driving device and a tapper. The driving device drives the screw rod to move up and down through a transmission gear. The lower end of the screw rod is provided with a tapper, and the tapper is located directly above the first rod feeding mechanism.

3. The raw material bar continuous feeding system according to claim 1, characterized in that: The translation mechanism includes a rotating frame and a second driving motor. The second driving motor is arranged at the bottom of the vacuum transition chamber. The second driving motor is connected to the rotating frame through a driving shaft. The rotating frame is provided with a damping clamping mechanism. At least two damping clamping mechanisms are arranged in the vertical direction.

4. The raw material bar continuous feeding system according to claim 3, characterized in that: At least one damping clamping mechanism is arranged in the circumferential direction.

5. The raw material bar continuous feeding system according to claim 1, characterized in that: The translation mechanism includes a slide rail, a damping clamping mechanism and a driving device. The resistance clamping mechanism is arranged on the slide rail, the driving device is arranged at one end of the slide rail, and limiters are arranged at both ends of the slide rail. The damping clamping mechanism is driven by the driving device to move between the limiters, and ensures that the damping clamping mechanism is aligned with the pushing rod mechanism and the first feeding rod mechanism at the starting point and the end point respectively.

6. The raw material bar continuous feeding system according to claim 1, characterized in that: The feed bin includes a shell, a dividing plate and a first drive motor. The dividing plate is installed in the shell through a rotating shaft, and the rotating shaft is driven by the first drive motor outside the shell. A rod pushing mechanism is provided on one side of the top of the shell, and a raw material rod inlet is provided on the other side.

7. The raw material bar continuous feeding system according to claim 6, characterized in that: The shell is also provided with a vacuum interface and a gas charging interface. The vacuum interface is arranged at the lower end of the shell, and the gas charging interface is arranged at the upper end of the shell. A pressure sensor is also arranged at the top of the shell.

8. The raw material bar continuous feeding system according to any one of claims 1 to 7, characterized in that: The vacuum transition chamber is rectangular in shape, and an inspection door is provided on one side of the vacuum transition chamber.

9. The raw material bar continuous feeding system according to any one of claims 1 to 7, characterized in that: The first rod feeding mechanism includes a driven wheel, a driving wheel and a deviation correction guide wheel. The driving wheel and the driven wheel are respectively installed on vertically parallel vertical plates in the feeding bin. The driving wheel is driven by a driving device on the outside of the feeding bin, and a buffer spring is provided on the driven wheel; the deviation correction guide wheel is installed on the vertical plate and is located above the driving wheel and the driven wheel.

10. A method for continuously feeding raw material bars, using the continuous feeding system for raw material bars according to any one of claims 1 to 9 for conveying, characterized in that: First, a rod with a blind hole at one end and an external thread at the other end is transported downward to the translation mechanism through a rod pushing mechanism under a vacuum environment. The translation mechanism moves the rod on the plane to between the rod feeding mechanisms, and the blind hole of the rod is tapped by the upper rod feeding mechanism and transported downward, so that the rod is connected to the rod below through threads and is transported to the melting chamber through the rod feeding mechanism below to correct the deviation.

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