Raw material bar continuous feeding system

Abstract

The utility model belongs to the field of vacuum melting powder manufacturing equipment, and provides a raw material bar continuous feeding system which 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. According to the utility model, continuous feeding of bars can be realized, the feeding bin can load a plurality of raw material bars at a time and continuously atomize to produce powder materials, the productivity per unit time is about one time larger than that of traditional similar equipment, the production efficiency is greatly improved, no tailings exist, raw materials are saved, and the product quality is high.

Description

Technical Field

[0001] The utility model relates to the field of vacuum melting powder making equipment, in particular to a continuous feeding system for raw material bars. Background Art

[0002] Traditional melting powder making is to first melt the metal raw materials in a smelting furnace, and then atomize or evaporate and directly cool them under specific conditions to prepare metal powder, or to combine atomize or evaporate them with plasma and cool them to obtain the metal powder required for the 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, which reduces 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, the rod feeding cycle is long, and the production capacity is low. Therefore, it is a technical problem that urgently needs to be solved. Utility Model Content

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

[0004] The technical solution of the utility model 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; the feeding bin is provided with a bar pushing mechanism, the transition bin is provided with a bar translation mechanism, and the bar feeding bin is provided with a first bar feeding mechanism, 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 by 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 the 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 end, and the upper end 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 of the rods, 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 drive device and a tapper. The drive device drives a screw rod up and down via a transmission gear. The tapper is provided at the lower end of the screw rod and is located directly above the first rod feeding mechanism. Preferably, the tapper is not temporarily withdrawn after tapping, and the rod is conveyed downward and rotated to connect the rod with the rod below through a threaded connection. After the connection is completed and the rod is conveyed, the tapper is withdrawn, thereby ensuring uninterrupted downward conveyance of the rod.

[0007] Furthermore, the translation mechanism includes a rotating frame and a second drive motor. The second drive motor is disposed at the bottom of the vacuum transition chamber and is connected to the rotating frame via a drive shaft. The rotating frame is provided with a damping clamping mechanism, with at least two damping clamping mechanisms disposed vertically. Preferably, when the rod is mounted on the rotating frame, the damping clamping mechanisms are located at both ends of the rod to ensure securement of the rod.

[0008] Furthermore, at least one damping clamping mechanism is provided in the circumferential direction. Preferably, the rotating frame is provided with at least one sub-bracket, each of which is provided with two damping clamping mechanisms in the vertical direction via a crossbar. More preferably, the rotating frame is provided with 2-8 sub-brackets, with the number of sub-brackets being an even or odd number. When the number of sub-brackets is an even number, loading and unloading can be performed simultaneously at both ends of the rotating frame, ensuring 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 limiters are provided 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.

[0010] Furthermore, the feed bin includes a housing, a graduated plate, and a first drive motor. The graduated plate is mounted within the housing via a rotating shaft, which is driven by the first drive motor located outside the housing. The first drive motor drives the rotary plate to rotate, conveying the rods to the bottom of the rod pushing mechanism, which continuously pushes the rods downward. The use of the graduated plate increases the amount of rods that can be stored at a time, reduces the number of times rods are added, and improves conveying efficiency.

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

[0012] Furthermore, the housing is provided with a vacuum port and an air charging port, the vacuum port being located at the lower end of the housing and the air charging port being located at the upper end of the housing. A pressure sensor is also provided at the top of the housing. Preferably, after a single loading operation onto the indexing plate is completed, the interior of the housing is evacuated via the vacuum port, and the vacuum level is monitored via the pressure sensor, thereby preventing air contamination during the bar feeding process.

[0013] Furthermore, the vacuum transition chamber is rectangular in shape, and an inspection door is provided on one side of the vacuum transition chamber, which facilitates inspection and maintenance of the translation mechanism.

[0014] Furthermore, the first rod-feeding mechanism includes a driven wheel, a driving wheel, and a deviation-correcting guide wheel. The driving wheel and the driven wheel are respectively mounted on vertically parallel vertical plates within the feeding bin. The driving wheel is driven by a drive device outside the feeding bin, and the driven wheel is provided with a buffer spring. The deviation-correcting guide wheel is mounted on the vertical plate and is located above the driving wheel and the driven wheel. Preferably, a limit seat is further provided at the lower end of the first rod-feeding mechanism. The limit seat has a through hole in the middle for the rod to pass through, ensuring that the rod can pass through accurately. The limit seat works in conjunction with the deviation-correcting 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 feeding raw material bars. 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 the bar is transported downward, so that the bar is connected to the bar below by a thread and is corrected and transported to the melting chamber by the lower rod feeding mechanism.

[0016] The utility model has the following features:

[0017] 1. The utility model 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 unit time production capacity is about twice that of traditional similar equipment, and the production efficiency is greatly improved. There is no raw material rod production waste, which saves raw materials and produces better product quality consistency.

[0018] 2. The setting of the feed bin can also reduce the contamination of the bars by the air and ensure the purity of the bars. The translation mechanism in the transition bin translates the bars on the horizontal plane to the top of the first rod feeding mechanism. Through the combination with the second rod feeding mechanism, the bars can be transported uninterruptedly from head to tail.

[0019] 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, driven wheel and limit seat, thereby ensuring the accuracy and effect of transportation.

[0020] 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

[0021] Figure 1 - is a schematic diagram of the structure of this utility model;

[0022] Figure 2 - is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 3 -for Figure 1 A partial enlarged schematic diagram of part A;

[0024] Figure 4 - is a schematic diagram of the rod feeding bin structure;

[0025] 1-Second rod feeding mechanism, 2-Rod pushing mechanism, 3-Feeding bin, 4-First valve, 5-First drive motor, 6-Translation mechanism, 7-Inspection door, 8-Second valve, 9-First rod feeding mechanism, 10-Pressure sensor, 11-Inflation interface, 12-Vacuum interface, 13-Rod, 14-Damping clamping mechanism, 15-Crossbeam, 16-Sleeve, 17-Second drive motor, 18-Locate pin, 19-Drive shaft, 20-Tapping device, 21-Vertical plate, 22-Bolt pull rod, 23-Correcting guide wheel, 24-Driven wheel, 25-Limiting seat, 26-Driving wheel, 27-Transmission chain. DETAILED DESCRIPTION

[0026] As shown in the accompanying drawings: a continuous feeding system for raw material bars 13, including a feed bin 3, a vacuum transition bin and a rod feeding bin, the feed bin 3 is arranged at the top of the transition bin through a first valve 4, and the rod feeding bin is arranged at the bottom of the transition bin through a second valve 8; a rod pushing mechanism 2 is provided on the feed bin 3, a bar translation mechanism 6 is provided in the transition bin, and a first rod feeding mechanism 9 is provided in the rod feeding bin, the rod 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.

[0027] Preferably, the second rod feeding mechanism 1 includes a driving device and a tapping device 20. The driving device drives the screw rod up and down through a transmission gear. The tapping device 20 is provided at the lower end of the screw rod and is located directly above the first rod feeding mechanism 9. Preferably, the tapping device 20 is not temporarily withdrawn after tapping, and the rod 13 is conveyed downward and rotated to connect the rod 13 with the rod 13 below through a threaded connection. After the connection is completed and conveyed, the tapping device 20 is withdrawn, thereby ensuring uninterrupted downward conveyance of the rod 13.

[0028] 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 inspection and maintenance of the translation mechanism 6.

[0029] This solution realizes continuous conveying of raw material bars 13 under vacuum through the mutual combination of the feeding 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 bars 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 are combined up and down during the rotating conveying process of the rods 13, and the rods 13 enter the melting chamber uninterruptedly, ensuring the continuous supply of raw materials.

[0030] In this embodiment, the translation mechanism 6 includes a rotating frame and a second drive motor 17. The second drive motor 17 is located at the bottom of the vacuum transition chamber and is connected to the rotating frame via a drive shaft 19. The rotating frame is provided with a damping clamping mechanism 14, with at least two damping clamping mechanisms 14 provided vertically. Preferably, when the rod 13 is mounted on the rotating frame, the damping clamping mechanisms 14 are located at both ends of the rod 13 to ensure securement of the rod 13. Preferably, at least one damping clamping mechanism 14 is provided circumferentially. Preferably, the rotating frame includes a fixed shaft and several sub-brackets, which are installed and fixed on the fixed shaft through a shaft sleeve 16, and a positioning pin 18 is provided on the shaft sleeve 16. 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 provided on the rotating frame, and each sub-bracket is provided with two damping clamping mechanisms 14 in the vertical direction through the cross bar; preferably, the sub-bracket is two parallel beams 15, and the backs of the beams 15 are provided with damping clamping mechanisms 14, 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 the two 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 provided on the rotating frame to ensure the continuous supply of rods 13.

[0031] 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 provided. Limiters are provided at both ends of the slide rails. The damping clamping mechanism 14 is driven by the driving device to move between the limiters, and ensure that the damping clamping mechanism 14 is aligned with the pushing rod mechanism 2 and the first rod feeding mechanism 9 at the starting point and the end point respectively. A second rod feeding mechanism 1 is also provided 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.

[0032] 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 and transport the rods 13 to the bottom of the push rod mechanism 2. The push rod mechanism 2 continuously pushes the rods 13 downward. The use of the dividing plate can increase the storage capacity of a single rod 13, reduce the number of times the rods 13 are added, and improve the transportation 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 rods 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 rods 13 onto the damping clamping mechanism 14. The setting of the inlet facilitates the loading of the raw material rods 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 provided at the lower end of the shell, and the air charging interface 11 is provided at the upper end of the shell. A pressure sensor 10 is also provided on the top of the shell. Preferably, after a single loading onto the indexing plate is completed, the interior of the housing is evacuated through the vacuum interface 12 and the vacuum degree is observed through the pressure sensor 10, thereby avoiding air contamination during the feeding process of the rods 13.

[0033] In the embodiment, the first rod-feeding mechanism 9 includes a driven wheel 24, a driving wheel 26, and a correction guide wheel 23. The driving wheel 26 and the driven wheel 24 are respectively mounted on vertically parallel vertical plates 21 within the feeding bin. The two parallel vertical plates 21 are fixedly connected by a bolt pull rod 22. The driving wheel 26 is driven by a driving device outside the feeding bin, and the driven wheel 24 is provided with a buffer spring. The 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. The lower end of the first rod-feeding mechanism 9 is further provided with a limit seat 25. The limit seat 25 has a through hole in the middle for the rod 13 to pass through, ensuring that the rod 13 can pass through accurately. The limit seat 25 works in conjunction with the 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 the correct posture.

[0034] The present invention realizes continuous and uninterrupted feeding of rods 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 production capacity is about twice that of traditional similar equipment, which greatly improves production efficiency. There is no raw material rod production tail material, which saves raw materials and produces better product quality consistency. The setting of the feed bin 3 can also reduce the contamination of the rods 13 by air, ensure the purity of the rods 13, and the translation mechanism 6 in the transition bin translates the rods 13 on the horizontal plane to the top of the first rod feeding mechanism 9. Through the combination with the second rod feeding mechanism 1, the rods 13 are connected head to tail and the rods 13 are transported uninterruptedly. The first rod feeding mechanism 9 ensures that the rods 13 enter the melting chamber in the correct posture through the combination between the 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 the transportation.

[0035] Example 2

[0036] 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, first, the bar 13 with a blind hole at one end and an external thread at the other end is conveyed downward to the translation mechanism 6 under a vacuum environment through the rod pushing mechanism 2 located above the feeding bin, and the translation mechanism 6 moves the bar 13 translationally or rotationally on the plane to between the first rod feeding mechanism 9 and the second rod feeding mechanism 1, and the blind hole of the bar 13 is tapped by the second rod feeding mechanism 1 above. 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. 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, completing the uninterrupted conveying of the entire bar 13.

[0037] The above is a preferred embodiment 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, shall fall 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 disposed at the top of the transition bin via a first valve, and the bar feeding bin is disposed at the bottom of the transition bin via 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 continuous feeding system of raw material bars according to claim 1, characterized in that: 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. 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 of the damping clamping mechanisms is provided 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 provided at both ends of the slide rail. The damping clamping mechanism is driven by the driving device to move between the limiters and ensure 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.

7. The raw material bar continuous feeding system according to claim 6, characterized in that: 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.

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

9. The raw material bar continuous feeding system according to any one of claims 1 to 8, 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.

10. The raw material bar continuous feeding system according to any one of claims 1 to 8, characterized in that: The first rod feeding mechanism includes a driven wheel, a driving wheel and a 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 correction guide wheel is installed on the vertical plate and is located above the driving wheel and the driven wheel.

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