Anti-blocking vibration disc feeder suitable for centerless grinding machine

Abstract

The utility model mainly relates to the field of grinding machining automation, in particular to an anti-blocking vibrating disk feeder suitable for a centerless grinding machine, which is used for automatic pass-type grinding machining of the centerless grinding machine. The equipment comprises a vibration disc rack, a feeding vibration disc, a linear vibration control device, an anti-blocking vacuum generator and a feeding supporting device. The vibration disc rack is subjected to carbon steel welding and paint spraying treatment; the inner wall of the feeding vibration disc is subjected to plastic spraying treatment; the linear vibration control device adopts a PLC (Programmable Logic Controller) to control a stepping motor to realize linear control; the anti-blocking vacuum generator cavity is made of SUS304 stainless steel in a machining mode. And the feeding support comprises a vertical and horizontal direction adjusting device. According to the automatic through-type grinding machine, automatic through-type grinding machining of shaft parts with the workpiece diameter being 2-3 mm and the length being 5-20 mm can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of centerless grinding machine grinding processing technology, concretely relates to a kind of anti-blocking vibrating disk feeder suitable for centerless grinding machine. BACKGROUND

[0002] At present, centerless grinding machine plays an indispensable role in the field of rotary body finishing, with the continuous improvement of industrial automation degree, numerical control technology gradually matures, product automatic feeding and discharging have become the basic requirement of automatic processing, under the premise of ensuring machining precision and efficiency, it is imperative to improve efficiency and intelligent upgrading through automation, and vibrating disk automatic feeding is indispensable in the field of short and small workpiece processing;Short and small workpieces are not easy to be processed manually due to their small size, and the feeding variation is small during automatic feeding, which leads to the easy occurrence of jamming and material breakage of vibrating disk feeding, affecting the machining precision of centerless grinding machine.

[0003] Therefore, the utility model makes great improvement and presents a kind of anti-blocking vibrating disk feeder suitable for centerless grinding machine. SUMMARY

[0004] The utility model aims at providing a kind of anti-blocking vibrating disk feeder suitable for centerless grinding machine, which is beneficial to realize short and small workpiece automatic feeding, and solves the problems of jamming and material breakage caused by small impurities, stains and weight changes during short and small workpiece feeding.

[0005] To solve the above technical problems, the utility model realizes the following technical scheme:

[0006] A kind of anti-blocking vibrating disk feeder suitable for centerless grinding machine, including rack, feeding vibrating disk, linear vibration control device, anti-blocking vacuum generator, feeding support device five main parts, linear vibration control device and its adjusting part are installed in the inside of rack, weight sensor, anti-blocking vacuum generator, feeding support device are installed above rack;

[0007] The linear vibration control device includes PLC controller, display screen, weight sensor, vibrating disk controller, stepper motor, control button, air circuit breaker, controller switch;Linear vibration control device controls vibrating disk weight feedback to PLC system and control stepper motor adjusting vibrating disk controller to control the discharge speed of feeding vibrating disk by weight sensor;

[0008] The anti-blocking vacuum generator comprises a vacuum generator support frame and a vacuum generator, and the vacuum generator comprises a vacuum generator feed pipe, a vacuum generator cavity, a vacuum generator air inlet pipe and a vacuum generator discharge pipe; the vibration disc feed pipe is connected with the vacuum generator feed pipe through a feed pipe fixing clamp, the vacuum generator feed pipe is connected with the vacuum generator cavity, the upper end of the vacuum generator cavity is connected with the vacuum generator air inlet pipe, the right end of the vacuum generator air inlet pipe is connected with the vacuum generator discharge pipe, and the vacuum generator discharge pipe is connected with the guide spring pipe.

[0009] The feed support device comprises a spring pipe pressing plate, a vertical adjusting seat, a front and rear adjusting seat and a front and rear support seat, the front and rear adjusting seat is fixed on the centerless grinding machine tool seat mounting hole through the front and rear support seat, the front and rear adjusting seat is connected with the vertical adjusting seat, and the vertical adjusting seat fixes the guide spring pipe through an internal hexagonal cylindrical head screw.

[0010] Further, the vacuum generator support frame is installed on the rack through a support hinge.

[0011] Further, the rack is welded by Q235 square tubes, and the surface is treated by spraying RAL9005 matte black paint.

[0012] Further, the rack is provided with a linear ball guide rail perpendicular to the axial direction of the grinding wheel below the weight sensor support plate.

[0013] Further, the feeding vibration disc tray is welded by SUS304 stainless steel, and the inside of the tray is treated by spraying plastic.

[0014] The above-mentioned anti-blocking vibration disc feeder suitable for a centerless grinding machine is used for automatically feeding and grinding short workpieces, and comprises the following steps:

[0015] In the first step, the workpieces to be ground are put into the feeding vibration disc tray after being screened, cleaned and impurity-removed by hand or machine;

[0016] In the second step, the vibration disc is started, the vibration disc starts feeding, the workpieces to be ground are discharged in the vibration disc tray, continuously screened by a mechanical screening structure, kept axially parallel to the axial direction of the grinding wheel, pushed out along the tray discharge track, fed into the anti-blocking vacuum generator through the vibration disc feed pipe, sucked into the vacuum generator cavity, and then pushed out, so as to realize feeding;

[0017] Third step, the feeding vibration disc continues to run for a period of time, the workpiece in the feeding disc decreases, the weight gradually decreases, the weight change information is transmitted to the PLC control system through the weight sensor, the control system controls the driver of the stepping motor according to different weight parameters, and the stepping motor adjusts the vibration disc controller, when the total weight of the workpiece to be ground gradually decreases over time, and the feeding speed of the vibration disc is unchanged, since the screening speed of the workpiece gradually decreases with the small amount of workpiece, the feeding speed is also reduced accordingly, on the contrary, when the vibration disc speed gradually decreases with the workpiece to be ground, the vibration disc feeding speed is accelerated, the weakness of the screening speed is compensated, the feeding speed is stabilized, and the purpose of linear control of the vibration disc operation is realized.

[0018] Fourth step, when the vibration inside the workpiece to be ground is discharged, the workpiece to be ground after screening, cleaning and impurity removal is added again, and the vibration disc will adjust the feeding speed according to the actual weight again to ensure stable feeding.

[0019] The beneficial effects of the utility model lie in:

[0020] 1, the utility model discloses a linear vibration control device, after the workpiece to be ground is poured into the vibration disc, the workpiece is gradually sent into the centerless grinding machine for grinding, the total weight of the workpiece in the vibration disc gradually decreases, under the action of the linear vibration control device, the vibration speed of the vibration disc is gradually increased, the purpose of linear control is realized, the feeding speed of the vibration disc can be adjusted according to the weight of the workpiece to be ground in the vibration disc to realize the stability of automatic feeding. Necessary conditions are provided for the high-speed, stable and continuous demand of the centerless grinding machine for short workpiece grinding demand.

[0021] 2, the utility model discloses a anti-blocking vacuum generator, ensures that the workpiece to be ground is discharged from the vibration disc, is accelerated after passing through the anti-blocking vacuum generator, has a certain initial speed, the friction force existing in the guide spring pipe due to gravity has a certain response ability, realizes the purpose that the rear workpiece pushes the front workpiece forward, ensures the continuity of workpiece discharge and guarantees grinding accuracy.

[0022] 3, the utility model discloses a group of linear ball guides perpendicular to the axial direction of the grinding wheel are arranged below the weight sensor support plate, which facilitates the adjustment of the position of the feeding vibration disc in use.

[0023] 4, the utility model discloses a anti-blocking vacuum generator is made of SUS304 stainless steel material, which ensures the corrosion resistance and wear resistance of the anti-blocking vacuum generator under the premise of ensuring the use condition, and provides necessary conditions for the automation stability.

[0024] 5, The utility model discloses a feed support device adopts the guide spring pipe as the conveying medium, and the guide spring pipe has the flexible feeding capacity to a certain extent, so that when the consumption of the grinding wheel and the guide wheel is small, the position of the feed support device does not need to be adjusted, and the debugging difficulty is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the linear vibration control device of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the anti-blocking vacuum generator of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the anti-blocking vacuum generator of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the feed support device of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the feed support device of the utility model;

[0031] Figure 7 It is a circuit connection diagram of the linear vibration control device of the utility model.

[0032] Marked in the figure: 1 - rack, 2 - feeding vibration disc, 3 - linear vibration control device, 4 - anti-blocking vacuum generator, 5 - feed support device, 6 - weight sensor, 7 vibration disc controller, 8 - step motor, 9 - control button, 10 - air circuit breaker, 11 - support hinge, 12 - controller switch, 13 - vacuum generator support frame, 14 - vibration disc feed pipe, 15 - feed pipe fixing clamp, 16 - vacuum generator, 17 - guide spring pipe, 18 - spring pipe pressing plate, 19 - vertical adjusting seat, 20 - front and back adjusting seat, 21 - front and back supporting seat, 22 - vacuum generator feed pipe, 23 - vacuum generator cavity, 24 - vacuum generator air inlet pipe, 25 - vacuum generator discharge pipe. DETAILED DESCRIPTION

[0033] The following describes the specific embodiment, structure, features and effects of the anti-blocking vibration disc feeder suitable for the centerless grinding machine according to the utility model in detail in combination with the drawings and the preferred embodiment.

[0034] Reference Figures 1-6The utility model relates to a kind of anti-blocking vibrating disk feeder suitable for centerless grinding machine, including frame 1, upper feeding vibrating disk 2, linear vibration control device 3, anti-blocking vacuum generator 4, feeding support device 5 five main parts, linear vibration control device 3 and its adjusting part are installed in the inside of frame 1, weight sensor 6, anti-blocking vacuum generator 4, feeding support device 5 are installed above frame 1;

[0035] The linear vibration control device 3 includes PLC controller, display screen, weight sensor 6, vibrating disk controller 7, stepper motor 8, control button 9, air circuit breaker 10, controller switch 12;Linear vibration control device 3 controls vibrating disk weight feedback to PLC system by weight sensor 6, controls stepper motor 8 to adjust vibrating disk controller 7 to control the discharge speed of upper feeding vibrating disk 2.The circuit connection diagram of linear vibration control device 3 is shown in Figure 7 .

[0036] The PLC controller is Delta SA series, and the air circuit breaker is Changhong NXB series.

[0037] The anti-blocking vacuum generator 4 includes vacuum generator support frame 13 and vacuum generator 16, and the vacuum generator 16 includes vacuum generator feeding pipe 22, vacuum generator cavity 23, vacuum generator air inlet pipe 24 and vacuum generator discharge pipe 25;The vibrating disk feeding pipe 14 is connected with the vacuum generator feeding pipe 22 by the feeding pipe fixing clamp 15, the vacuum generator feeding pipe 22 is connected with the vacuum generator cavity 23, the upper end of the vacuum generator cavity 23 is connected with the vacuum generator air inlet pipe 24, the right end of the vacuum generator air inlet pipe 24 is connected with the vacuum generator discharge pipe 25, and the vacuum generator discharge pipe 25 is connected with the guide spring pipe 17.

[0038] The anti-blocking vacuum generator 4 enters high-pressure gas through the vacuum generator air inlet pipe 24 to generate a pressure difference in the vacuum generator cavity 23, so that the vacuum generator air inlet pipe 24 generates suction force, the workpiece is sucked into the vacuum generator cavity 23, and the gas is discharged from the vacuum generator discharge pipe 25 to blow the workpiece out of the vacuum generator.

[0039] The principle of the anti-blocking vacuum generator is that compressed air passes through the narrow space formed by the vacuum generator air inlet pipe and the vacuum generator discharge pipe, the nozzle forms turbulent jet flow, under the action of air suction, the flowing jet fluid constantly sucks away the air near the narrow space, the air pressure at the air inlet end of the vacuum generator cavity is reduced below atmospheric pressure, a certain vacuum degree is formed, and the feeding purpose is achieved.

[0040] The feeding support device 5 comprises a spring pipe pressing plate 18, a vertical adjusting base 19, a front and back adjusting base 20 and a front and back supporting base 21, the front and back adjusting base 20 is fixed on the centerless grinding machine tool seat mounting hole through the front and back supporting base 21, the front and back adjusting base 20 is connected with the vertical adjusting base 19, the vertical adjusting base 19 fixes the guide material spring pipe 17 through the inner hexagonal cylindrical head screw, and the workpiece to be ground is conveniently sent into the grinding area of the centerless grinding machine.

[0041] The vacuum generator support frame 13 is installed on the rack 1 through the support hinge 11.

[0042] The rack 1 is welded by Q235 square tubes, and the surface is treated by spraying RAL9005 matte black paint.

[0043] The rack 1 is provided with a linear ball guide perpendicular to the axial direction of the grinding wheel below the weight sensor 6 support plate, so that the position of the feeding vibration disc can be adjusted in use.

[0044] The material tray of the feeding vibration disc 2 is welded by SUS304 stainless steel, so that the welding seam is complete and water leakage is avoided; the inside of the material tray is treated by spraying plastic, so that the inner wall of the material tray is not damaged to workpieces.

[0045] The utility model discloses a centerless grinding machine for shaft parts, which can realize automatic through grinding of shaft parts with a diameter of 2-3 mm and a length of 5-20 mm.

[0046] Step one, the workpiece to be ground is put into the feeding vibration disc 2 after being screened, cleaned and impurity-removed by hand or machine;

[0047] Step two, start the vibrating disc, the vibrating disc starts feeding, after the grinding workpiece is discharged in the vibrating disc tray and continuously screened by the mechanical screening structure, the grinding workpiece is discharged axially parallel to the grinding wheel axial direction, the grinding workpiece is pushed out along the tray discharge track, and then enters the anti-blocking vacuum generator 4 through the vibrating disc feeding pipe 14. The narrow space formed by the vacuum generator feeding pipe 22 and the vacuum generator discharge pipe 25 in the anti-blocking vacuum generator 4 is under the action of compressed air, the nozzle forms a turbulent jet flow, and the flowing jet flow continuously sucks the air near the narrow space, so that the air pressure at the inlet of the vacuum generator cavity 23 is reduced to below atmospheric pressure, and a certain vacuum degree is formed. Under the premise of stable flow of compressed air, the smaller the narrow space formed by the vacuum generator inlet pipe 22 and the vacuum generator discharge pipe 25, the greater the vacuum degree generated, and the stronger the suction force. Under the premise that the narrow space formed by the vacuum generator inlet pipe and the vacuum generator discharge pipe can generate a certain vacuum degree with the help of compressed air, the greater the amount of compressed air, the stronger the suction force. The structure of the vacuum generator feeding pipe 22, the vacuum generator cavity 23 and the vacuum generator discharge pipe 25 is a stable structure, so the adjustment of the suction capacity of the anti-blocking vacuum generator 4 can be controlled by installing a manual throttle valve in the air path of the vacuum generator inlet pipe 24 to control the amount of compressed air. According to the actual situation, the feeding and discharging speed of the anti-blocking vacuum generator 4 can be adjusted. When the compressed air enters the vacuum generator cavity 23, the vacuum generator feeding pipe 22 and the vacuum generator discharge pipe 25 are one-way tapered structures, so under the condition that the outlet is unobstructed, the compressed gas continues to discharge along the pipeline to the outlet, and at the same time, the workpiece is given a pushing force to move towards the outlet. After reaching the guide spring pipe 17, the workpiece continues to move along the inside of the spring pipe and enters the grinding area of the centerless grinding machine. The compressed air is discharged along the spring pipe gap and returns to the atmosphere.

[0048] Step three, after the vibrating disc 2 continues to run for a period of time, the weight of the workpiece in the feeding tray decreases, and the weight change information is transmitted to the PLC control system through the weight sensor 6. The control system controls the driver of the stepping motor 8 according to different weight parameters, and controls the stepping motor 8 to adjust the vibrating disc controller 7. When the total weight of the workpiece to be ground decreases over time, and the feeding speed of the vibrating disc remains unchanged, the screening speed of the workpiece gradually decreases as the number of workpieces decreases, so the feeding speed also decreases accordingly. Conversely, when the vibrating disc speed gradually decreases as the workpiece to be ground gradually decreases, the vibrating disc feeding speed increases accordingly, which compensates for the weakness of the screening speed and stabilizes the feeding speed, achieving the purpose of linear control of the vibrating disc operation.

[0049] Step four, when the vibrating internal workpiece to be ground is completely discharged, the workpiece to be ground after screening, cleaning and impurity removal is added again, and the vibrating disc will adjust the feeding speed according to the actual weight to ensure stable feeding.

[0050] It is understood by those skilled in the art that the linear vibration control device and the anti-blocking vacuum generator mentioned in the utility model are components for executing one or more of the structures, operations, methods, measures and schemes described in the utility model application. The components can be specially designed and manufactured for the desired purpose, or known components or other devices in the mechanical industry can be used. Other unexplained parts involved in the utility model are the same as or realized by the prior art.

[0051] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, without departing from the technical scheme content of the utility model, still belongs to the range of the technical scheme of the utility model.

Claims

1. A non-clogging vibratory bowl feeder suitable for use with a centerless grinder, characterized by: The device comprises a rack (1), an upper feeding vibrating disc (2), a linear vibration control device (3), an anti-blocking vacuum generator (4), and a feeding support device (5). The linear vibration control device (3) and its adjusting part are installed inside the rack (1), and the weight sensor (6), the anti-blocking vacuum generator (4), and the feeding support device (5) are installed above the rack (1). The linear vibration control device (3) comprises a PLC controller, a display screen, a weight sensor (6), a vibrating disc controller (7), a stepping motor (8), a control button (9), an air circuit breaker (10), and a controller switch (12). The linear vibration control device (3) controls the vibrating disc weight feedback to the PLC system through the weight sensor (6), controls the vibrating disc controller (7) by adjusting the stepping motor (8), and controls the discharging speed of the upper feeding vibrating disc (2). The anti-blocking vacuum generator (4) comprises a vacuum generator support frame (13) and a vacuum generator (16). The vacuum generator (16) comprises a vacuum generator feeding pipe (22), a vacuum generator cavity (23), a vacuum generator air inlet pipe (24), and a vacuum generator discharging pipe (25). The vibrating disc feeding pipe (14) is connected with the vacuum generator feeding pipe (22) through a feeding pipe fixing clamp (15). The vacuum generator feeding pipe (22) is connected with the vacuum generator cavity (23). The upper end of the vacuum generator cavity (23) is connected with the vacuum generator air inlet pipe (24). The right end of the vacuum generator air inlet pipe (24) is connected with the vacuum generator discharging pipe (25). The vacuum generator discharging pipe (25) is connected with the guide spring pipe (17). The feeding support device (5) comprises a spring pipe pressing plate (18), a vertical adjusting seat (19), a front and rear adjusting seat (20), and a front and rear support seat (21). The front and rear adjusting seat (20) is fixed on the centerless grinding machine tool seat mounting hole through the front and rear support seat (21). The front and rear adjusting seat (20) is connected with the vertical adjusting seat (19). The vertical adjusting seat (19) fixes the guide spring pipe (17) through an internal hexagonal cylindrical head screw.

2. A non-clogging vibrating tray feeder for use with a centerless grinder as set forth in claim 1, wherein: The vacuum generator support frame (13) is installed on the rack (1) through a support hinge (11).

3. A non-clogging vibrating tray feeder for use with a centerless grinder as defined in claim 1 wherein: The rack (1) is welded by Q235 square tubes, and the surface is treated with RAL9005 matte black paint.

4. A non-clogging vibrating tray feeder for use with a centerless grinder as set forth in claim 1, wherein: The rack (1) is provided with a linear ball guide rail perpendicular to the axial direction of the grinding wheel below the weight sensor (6) support plate.

5. A non-clogging vibrating tray feeder for use with a centerless grinding machine as defined in claim 1 wherein: The upper feeding vibrating disc (2) is welded by SUS304 stainless steel, and the inside of the disc is treated by spraying.

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