Automatic feeding device

Abstract

The utility model discloses an automatic feeding device, which belongs to the field of transmission devices and comprises a base, a feeding device and a feeding device. The feeding hopper is arranged at the top of one side of the machine base, and the bottom of the feeding hopper is communicated with the cavity in the machine base; the discharging hopper is arranged on the other side of the machine base, and the top of the discharging hopper communicates with the cavity in the machine base; the conveying assembly is arranged in the cavity of the machine base, the conveying assembly is used for conveying powder entering the cavity from the feeding hopper to the discharging hopper to fall out, and the conveying assembly vibrates in the horizontal plane in the direction perpendicular to the conveying direction of the conveying assembly through the vibration assembly; the powder conveying device has the advantages that the vibration assembly is arranged to enable the conveying assembly to vibrate in the direction perpendicular to the conveying direction, the stacking density of powder in the conveying process can be more uniform, the powder can be prevented from being bonded, and the problems of follow-up powder blocking and non-uniform discharging are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission devices, in particular to an automatic feeding device. Background Art

[0002] The powder sintering method is a process in which powder is pressed into a green compact and heated to a temperature below the melting point of the main component. Due to physical and chemical reactions such as bonding between particles, the material or product with the required strength and characteristics is obtained. This technology has been widely used in the manufacture of various structural components in the fields of aerospace, rail transportation, automobiles, precision machinery, new energy, etc. In particular, some difficult-to-process materials and molded parts that cannot be prepared by traditional casting methods and mechanical processing methods need to be pre-pressed and then sintered. The forming process is a crucial link. The quality of the green compact directly affects the performance of the sintered product. Among them, powder pressing is the most common forming method.

[0003] Powder pressing is a powder forming method that uses external pressure in a mold. It is common to inject powder directly into the mold using a unidirectional or bidirectional pressurization method. This method is simple to operate, fast and efficient. Common powder filling devices on the market include screw and vibration modes, but these two modes have obvious functional problems for particles or powders with a certain viscosity. The powder feeding device of the screw is prone to blockage, resulting in no discharge; the existing vibration powder filling device essentially relies on shaking to make the powder fall freely along the slope, which is uneven and difficult to quantitatively control. This will cause uneven material laying thickness, and local small holes, warping and other problems are prone to occur during the forming process. Therefore, in the preparation of green body forming of complex-shaped structural parts with ultra-large aspect ratios using powders with a certain viscosity, how to lay powder efficiently and with high quality is an urgent problem to be solved.

[0004] For this purpose, we propose an automatic feeding device. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides an automatic feeding device.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is:

[0007] An automatic feeding device comprises: a machine base, which is provided with a cavity inside; a feeding hopper, which is arranged at the top of one side of the machine base, and the bottom of the feeding hopper is connected with the cavity inside the machine base; a discharging hopper, which is arranged at the other side of the machine base, and the top of the discharging hopper is connected with the cavity inside the machine base; a transmission component, which is arranged in the cavity of the machine base, and the transmission component is used to transmit the powder entering the cavity from the feeding hopper to the discharging hopper and falls out, and the transmission component realizes vibration on a horizontal plane perpendicular to the transmission direction of the transmission component through a vibration component.

[0008] A transmission component is arranged in the cavity of the machine base, and a vibration component is arranged on the transmission component. The vibration component is used to enable the transmission component to vibrate on a horizontal plane perpendicular to the transmission direction of the transmission component. The vibration component can make the packing density of the powder on the transmission component more uniform during the transmission process, and the vibration can prevent the sticky powder from adhering to the conveyor belt. In this way, the powder is poured into the mold through the discharge hopper, avoiding the problems of powder blockage and uneven material falling.

[0009] It is further defined that the transmission component includes a conveyor frame, a transmission belt, a driving pulley, a first driving motor and a driven pulley; the two sides of the conveyor frame are movably connected to the machine base, the driving pulley and the driven pulley are respectively arranged at the two ends of the conveyor frame, the first driving motor is arranged on the conveyor frame, and the output shaft of the first driving motor is fixedly connected to the driving pulley to drive the driving pulley to rotate, and the transmission belt is transmission-connected to the driving pulley and the driven pulley; the driving pulley is driven to rotate by the first driving motor, and the driving pulley drives the transmission belt to rotate to realize the transmission of powder, and the structure is simple.

[0010] It is further defined that the vibration assembly includes a slide bar, a return spring, a cushion block, an eccentric wheel and a second drive motor; the slide bar is connected to the conveyor frame along the front-to-back direction of the base, and both ends of the slide bar are fixed to the base, the return spring is sleeved on the slide bar on either side of the outside of the conveyor frame, the cushion block is arranged on the side wall of the conveyor frame opposite to the return spring, a through hole is opened on the base for the cushion block to pass through, the second drive motor is fixed on the base, and the output shaft of the second drive motor is vertically arranged, the eccentric wheel is fixed on the output shaft of the second drive motor, and when the eccentric wheel is near When the proximal side of the eccentric wheel contacts the pad, the return spring is in a pre-tightened state; the pad is arranged on the side wall of the conveyor frame, and the pad passes through the side wall of the machine base and contacts the eccentric wheel. When the return spring is not subjected to force, the pad contacts the proximal side of the eccentric wheel, and the rotation of the second drive motor drives the eccentric wheel to rotate. At this time, the pad will drive the conveyor frame as a whole to move toward the return spring side under the action of the eccentric wheel to compress the return spring. When the proximal side of the eccentric wheel contacts the pad, the return spring extends and drives the conveyor frame as a whole to move toward the eccentric wheel side, thereby realizing the vibration of the transmission component in this cycle.

[0011] It is further defined that there are two sliding rods, which are respectively arranged on the left and right sides of the pad; the arrangement of two sliding rods can increase the support points of the conveyor frame, and being arranged on both sides of the pad can make the force on the sliding rod more uniform and increase the service life.

[0012] It is further defined that the feeding hopper is fixedly connected to the top of the machine base by an L-shaped mounting plate, and a triangular reinforcing plate is provided in the bending part of the mounting plate; fixing the feeding hopper by the mounting plate is convenient for disassembly and assembly, and providing the reinforcing plate can enhance the strength of the mounting plate to prevent further bending at the bending part.

[0013] It is further defined that the conveyor frame where the driving pulley is located extends out of the machine base, the first driving motor is fixedly connected to the conveyor frame through a mounting frame, a rotating shaft is provided on the driving pulley, and the rotating shaft and the output shaft of the first driving motor are connected through a coupling; by arranging a rotating shaft on the driving pulley and connecting the rotating shaft to the output shaft of the first driving motor through a coupling, the disassembly, assembly and maintenance of the first driving motor can be made more convenient, and the maintenance of the first driving motor can be completed without removing the entire transmission assembly, and installing the first driving motor through the mounting frame can provide installation space for the coupling.

[0014] It is further defined that the bottom of the discharge hopper is provided with a closing opening; providing the closing opening at the bottom of the discharge hopper can make the discharge more concentrated and uniform.

[0015] It is further defined that a hanging ear is provided on the side wall of the feeding hopper, a hanging groove matching the hanging ear is provided on the top of the mounting plate, a gasket is provided in the hanging groove, and the longitudinal section of the hanging ear is U-shaped; such arrangement of the feeding hopper and the mounting plate can adjust the distance between the feeding hopper and the conveyor belt by changing the number or thickness of the gasket, thereby achieving the adjustment of the powder delivery amount.

[0016] It is further defined that ratchets are provided on the surface of the conveyor belt, the ratchets are in the shape of a right-angled triangle, and the inclination direction of the hypotenuse of the ratchets is the same as the transmission direction; ratchets are provided on the surface of the conveyor belt and the effective direction of the ratchets is the same as the transmission direction so that the conveyor belt can scrape away the powder falling from the feeding hopper in time, and the vibration component can also prevent the powder from sticking to the ratchets.

[0017] It is further specified that a rolling bearing is provided on the outer sleeve of the eccentric wheel, and when the proximal side of the rolling bearing contacts the pad, the return spring is in a pre-tightened state; the direct contact between the eccentric wheel and the pad is a sliding friction contact, which will affect the stability of the device and cause wear and reduce the service life of the device. By arranging a rolling bearing, the outer ring of the rolling bearing and the pad are close to being stationary, which can greatly reduce the stability impact caused by friction and improve the service life of the device.

[0018] The beneficial effect of the utility model is that by arranging a vibration component to make the transmission component vibrate perpendicular to the transmission direction, the packing density of the powder during the transmission process can be made more uniform and the powder can be prevented from sticking, thus avoiding the subsequent problems of powder blockage and uneven material falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 for Figure 2Sectional view in the AA direction;

[0022] Figure 4 A top view of the state where the shell on the top of the base is removed;

[0023] Figure 5 The figure is a schematic diagram of the matching between the mounting ear and the mounting plate;

[0024] Figure 6 A simple diagram of a transmission belt and ratchet.

[0025] The symbols of the components are as follows:

[0026] Machine base 1, observation window 11, feeding hopper 2, mounting plate 21, reinforcing plate 22, hanging ear 23, hanging groove 24, gasket 25, discharging hopper 3, closing mouth 31, transmission component 4, conveyor frame 41, transmission belt 42, driving pulley 43, first driving motor 44, driven pulley 45, mounting frame 46, coupling 47, vibration component 5, sliding rod 51, return spring 52, cushion block 53, eccentric wheel 54, second driving motor 55, rolling bearing 56. DETAILED DESCRIPTION

[0027] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0028] Example:

[0029] like Figure 1-Figure 6As shown, an automatic feeding device comprises a machine base 1, a feeding hopper 2, a discharging hopper 3, a transmission component 4 and a vibration component 5; a cavity is provided inside the machine base 1, and a transparent observation window 11 is provided on the top surface of the machine base 1; the feeding hopper 2 is arranged at the top of one side of the machine base 1, and the feeding hopper 2 is fixedly connected to the top of the machine base 1 through an L-shaped mounting plate 21, and a triangular reinforcing plate 22 is provided in the bending part of the mounting plate 21, and a hanging ear 23 is provided on the side wall of the feeding hopper 2, and a hanging groove 24 matching the hanging ear 23 is opened on the top of the mounting plate 21, and a gasket 25 is provided in the hanging groove, and the longitudinal section of the hanging ear 23 is U-shaped; and the bottom of the feeding hopper 2 is connected with the cavity inside the machine base 1; the discharging hopper 3 is arranged on the other side of the machine base 1, and the The top is connected to the cavity inside the base 1, and the bottom of the discharge hopper 3 is provided with a closure 31; the transmission component 4 is arranged in the cavity of the base 1, and the transmission component 4 is used to transmit the powder entering the cavity of the feeding hopper 2 to the discharge hopper 3 to fall out, and the transmission component 4 realizes vibration on the horizontal plane perpendicular to the transmission direction of the transmission component 4 through the vibration component 5; the transmission component 4 includes a conveyor frame 41, a conveyor belt 42, a driving pulley 43, a first driving motor 44 and a driven pulley 45; both sides of the conveyor frame 41 are movably connected to the base 1, the driving pulley 43 and the driven pulley 45 are respectively arranged at both ends of the conveyor frame 41, the first driving motor 44 is arranged on the conveyor frame 41, and the output shaft of the first driving motor 44 is connected to the driving belt The wheel 43 is fixedly connected to realize rotational driving of the driving pulley 43, and the transmission belt 42 is transmission-connected to the driving pulley 43 and the driven pulley 45. The surface of the transmission belt 42 is provided with a ratchet 421, and the ratchet 421 is in the shape of a right-angled triangle, and the inclination direction of the hypotenuse of the ratchet 421 is the same as the transmission direction; the transmission machine frame 41 where the driving pulley 43 is located extends out of the machine base 1, and the first driving motor 44 is fixedly connected to the transmission machine frame 41 through the mounting frame 46. A rotating shaft is provided on the driving pulley 43, and the rotating shaft and the output shaft of the first driving motor 44 are connected through a coupling 47; the vibration component 5 includes a slide bar 51, a return spring 52, a cushion block 53, an eccentric wheel 54 and a second driving motor 55; the slide bar 51 is along the front and rear directions of the machine base 1 The slide rod 51 is connected to the conveyor frame 41 and both ends are fixed on the machine base 1. The return spring 52 is sleeved on the slide rod 51 on either side outside the conveyor frame 41. The cushion block 53 is arranged on the side wall of the conveyor frame 41 opposite to the return spring 52. A through hole for the cushion block 53 to pass through is opened on the machine base 1. The second drive motor 55 is fixed on the machine base 1 and the output shaft of the second drive motor 55 is vertically arranged. The eccentric wheel 54 is fixed on the output shaft of the second drive motor 55. A rolling bearing 56 is arranged on the outer sleeve of the eccentric wheel 54. When the proximal side of the rolling bearing 56 contacts the cushion block 53, the return spring 52 is in a pre-tightened state. There are two slide rods 51, and the two slide rods 51 are respectively arranged on the left and right sides of the cushion block 53.

[0030] By arranging a transmission component 4 in the cavity of the machine base 1, and arranging a vibration component 5 on the transmission component 4, the vibration component 5 is used to make the transmission component 4 realize vibration on a horizontal plane perpendicular to the transmission direction of the transmission component 4. The vibration component 5 can make the packing density of the powder on the transmission component 4 more uniform during the transmission process, and the vibration can prevent the sticky powder from adhering to the transmission belt 42, so that the powder is poured into the mold through the discharge hopper 3, avoiding the problems of powder blockage and uneven material dropping; the first drive motor 44 drives the drive pulley 43 to rotate, and the drive pulley 43 drives the transmission belt 42 to rotate to realize the transmission of the powder, and the structure is simple; the pad 53 is arranged on the conveyor frame 4 1, and the cushion block 53 passes through the side wall of the machine base 1 and contacts the eccentric wheel 54. When the return spring 52 is not subjected to force, the cushion block 53 contacts the proximal side of the eccentric wheel 54, and the second driving motor 55 rotates to drive the eccentric wheel 54 to rotate. At this time, the cushion block 53 will drive the conveyor frame 41 as a whole to move toward the return spring 52 side under the action of the eccentric wheel 54 to compress the return spring 52. When the proximal side of the eccentric wheel 54 contacts the cushion block 53, the return spring 52 extends and drives the conveyor frame 41 as a whole to move toward the eccentric wheel 54 side, thereby realizing the vibration of the transmission component 4 in a cycle; setting two slide bars 51 can increase the support points of the conveyor frame 41, and setting them on both sides of the cushion block 53 can make the slide bar 51 more evenly stressed. The feeding hopper 2 is fixed by the mounting plate 21 for easy disassembly and assembly, and the reinforcement plate 22 is provided to enhance the strength of the mounting plate 21 to prevent further bending at the bend; the first drive motor 44 can be disassembled and maintained more conveniently by arranging a rotating shaft on the driving pulley 43 and connecting the rotating shaft to the output shaft of the first drive motor 44 through the coupling 47, and the maintenance of the first drive motor 44 can be completed without removing the entire transmission assembly 4, and the first drive motor 44 can be installed by installing the mounting frame 46 to provide space for the coupling 47 to be installed; the bottom of the discharging hopper 3 is provided with a closing opening 31 to make the discharging more concentrated and uniform; the feeding hopper 2 and the mounting plate 21 are arranged in this way so that The number or thickness of the gaskets 25 is changed to adjust the distance between the feeding hopper 2 and the conveyor belt 42, thereby achieving the adjustment of the powder delivery amount; a ratchet 421 is provided on the surface of the conveyor belt 42 and the effective direction of the ratchet 421 is the same as the transmission direction so that the conveyor belt 42 can promptly scrape away the powder dropped from the feeding hopper 2, and the vibration component 5 can also prevent the powder from adhering to the ratchet 421; the eccentric wheel 54 is in direct contact with the pad 53 as a sliding friction contact, which will affect the stability of the device and cause wear and reduce the service life of the device, and a rolling bearing 56 is provided so that the outer ring of the rolling bearing 56 and the pad 53 are close to being stationary, which can greatly reduce the stability caused by friction and improve the service life of the device.

Claims

1. An automatic feeding device, characterized in that: include: A machine base (1) having a cavity therein; A feeding hopper (2) is arranged on the top of one side of the machine base (1), and the bottom of the feeding hopper (2) is connected to the cavity inside the machine base (1); A discharge hopper (3) is arranged on the other side of the machine base (1), and the top of the discharge hopper (3) is connected to the cavity inside the machine base (1); A transmission component (4) is arranged in the cavity of the machine base (1), and is used to transmit the powder material entering the cavity from the feeding hopper (2) to the discharge hopper (3) for falling out. The transmission component (4) realizes vibration on a horizontal plane perpendicular to the transmission direction of the transmission component (4) through a vibration component (5).

2. The automatic feeding device according to claim 1, characterized in that: The transmission assembly (4) comprises a transmission frame (41), a transmission belt (42), a driving pulley (43), a first driving motor (44) and a driven pulley (45); both sides of the transmission frame (41) are movably connected to the machine base (1); the driving pulley (43) and the driven pulley (45) are respectively arranged at two ends of the transmission frame (41); the first driving motor (44) is arranged on the transmission frame (41); and the output shaft of the first driving motor (44) is fixedly connected to the driving pulley (43) to realize rotational driving of the driving pulley (43); and the transmission belt (42) is transmission-connected to the driving pulley (43) and the driven pulley (45).

3. The automatic feeding device according to claim 2, characterized in that: The vibration assembly (5) comprises a slide bar (51), a return spring (52), a cushion block (53), an eccentric wheel (54) and a second drive motor (55); the slide bar (51) is connected to the conveyor frame (41) along the front-rear direction of the machine base (1), and both ends of the slide bar (51) are fixed to the machine base (1); the return spring (52) is sleeved on the slide bar (51) on either side outside the conveyor frame (41); the cushion block (53) is arranged on the slide bar (51) and the return spring (52) is arranged on the slide bar (51) and the second drive motor (55) is arranged on the slide bar (54) and the second drive motor (55) is arranged on the slide bar (54) and the second drive motor (55) is arranged on the slide bar (51 ... A through hole for the cushion block (53) to pass through is opened on the machine base (1) on the side wall of the conveyor frame (41) on the opposite side of the return spring (52), the second drive motor (55) is fixedly mounted on the machine base (1), and the output shaft of the second drive motor (55) is vertically arranged, and the eccentric wheel (54) is fixedly mounted on the output shaft of the second drive motor (55). When the proximal side of the eccentric wheel (54) contacts the cushion block (53), the return spring (52) is in a pre-tightened state.

4. The automatic feeding device according to claim 3, characterized in that: Two sliding rods (51) are provided, and the two sliding rods (51) are respectively arranged on the left and right sides of the cushion block (53).

5. The automatic feeding device according to claim 1, characterized in that: The feeding hopper (2) is fixedly connected to the top of the machine base (1) via an L-shaped mounting plate (21), and a triangular reinforcing plate (22) is provided in the bending part of the mounting plate (21).

6. The automatic feeding device according to claim 2, characterized in that: The conveyor frame (41) where the driving pulley (43) is located extends out of the machine base (1); the first driving motor (44) is fixedly connected to the conveyor frame (41) via a mounting frame (46); a rotating shaft is provided on the driving pulley (43); the rotating shaft and the output shaft of the first driving motor (44) are connected via a coupling (47).

7. The automatic feeding device according to claim 1, characterized in that: The bottom of the discharge hopper (3) is provided with a closing opening.

8. The automatic feeding device according to claim 5, characterized in that: A hanging ear (23) is provided on the side wall of the feeding hopper (2), a hanging groove (24) matching the hanging ear (23) is provided on the top of the mounting plate (21), a gasket (25) is provided in the hanging groove (24), and the longitudinal section of the hanging ear (23) is U-shaped.

9. The automatic feeding device according to claim 3, characterized in that: The surface of the transmission belt (42) is provided with ratchet teeth (421), the ratchet teeth (421) are in the shape of a right triangle, and the inclination direction of the hypotenuse of the ratchet teeth (421) is the same as the transmission direction.

10. The automatic feeding device according to claim 3, characterized in that: The outer shell of the eccentric wheel (54) is provided with a rolling bearing (56), and when the proximal side of the rolling bearing (56) contacts the cushion block (53), the return spring (52) is in a pre-tightened state.

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