CN213438694U - Automatic metal stool leg grinding machine - Google Patents

Abstract

The utility model discloses an automatic change metal bench foot polisher, include: a grinding power assembly is formed by meshing four screw driven gears with a screw driving gear, and four push-pull screws are arranged in four push-pull screw frames; the four polishing assemblies are meshed with the push-pull screw through threaded sliders arranged in the push-pull screw frame; the two feeding components are arranged below the polishing component, meshed with the internal thread of a lifting table through a lifting screw rod and sleeved in a workpiece frame; the feeding frame is sleeved in the two screw holes and the two feeding driven gears by the gear fixed end of the lifting screw, a feeding driving gear is meshed with the two feeding driven gears, and a rotating shaft is arranged below the feeding driving gear; and the top platform at the upper end of the rack is sleeved on the screw motor by a motor sleeve and is fixedly connected with the screw gear cover, and the rotating shaft hole at the lower end of the rack is sleeved on the rotating shaft of the feeding rack. The product drives four groups of grinding wheels to automatically polish and grind the metal stool legs through four screws.

Description

Automatic metal stool leg grinding machine

Technical Field

The utility model relates to an automatic change metal bench foot polisher especially relates to one kind through four push-and-pull screw rods, drives four group's wheels of polishing, carries out the machine that full-automatic polishing was polished to metal bench foot.

Background

A large number of metal chairs and stools are available on the market at present, and when bases and supporting legs of the chairs and stools are produced, the bases and the supporting legs of the chairs and stools are pressed, polished and polished on a severe polishing and polishing grinding wheel by manpower, so that huge physical force of workers is consumed, and the bodies of the workers are easily damaged by metal due to metal dust flying around the polishing grinding wheel, and the pneumoconiosis of the workers is further caused. In order to avoid the original violent working conditions of workers, the product is developed by the inventor, four groups of grinding wheels are driven by four push-pull screw rods, and the left surface, the right surface and the upper surface of the metal stool frame are polished and ground from outside to inside and from inside to outside on four to five feet of the metal stool frame, so that the production efficiency is improved, and the possibility of the bitter force of the workers and the infection of pneumoconiosis is avoided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic change metal bench foot polisher drives four groups through four push-and-pull screw rods and polishes the wheel, from outside to inside, again from inside to outside, on four to five feet on metal bench frame, polishes simultaneously three faces on the left side, the right and the top, has improved production efficiency promptly, has also stopped workman's the bitter and has got pneumoconiosis's possibility.

The utility model discloses a following technical scheme realizes: the automatic metal stool foot polisher includes: a grinding power assembly comprises a screw driving gear sleeved on an output shaft of a screw motor, four screw driven gears meshed with the screw driving gear, four push-pull screws, a screw gear cover and four screw driven gears, wherein one ends of the four push-pull screws penetrate through the screw gear cover and are sleeved in the screw driven gears, and two ends of the four push-pull screws are arranged in four push-pull screw frames; each polishing assembly is meshed with a push-pull screw of the polishing assembly through internal threads at the upper end of a threaded sliding block and is arranged in a sliding rail of a push-pull screw frame, and five gears and three polishing wheels driven by a polishing motor are arranged below each polishing assembly; the feeding component is arranged below the polishing power component and the polishing component and is arranged on the feeding frame, and the feeding component is meshed with the internal thread of a lifting platform through a lifting screw rod and is sleeved in a lifting screw rod hole of a workpiece frame; the feeding rack is sleeved in the two screw holes by the gear fixed end of the lifting screw of the feeding component, the screw fixed end of the lifting screw is sleeved in the two feeding driven gears so as to support the feeding component, the output shaft of a lifting motor is sleeved in the feeding driving gear, the feeding driving gear is meshed with the feeding driven gears, and a rotating shaft is arranged below the feeding rack; the top platform at the upper end of the frame is sleeved on a screw motor of the polishing power assembly through a screw motor sleeve and is fixedly connected with a screw gear sleeve so as to support the polishing assembly, and a rotating shaft hole at the lower end of the frame is sleeved on a rotating shaft below the feeding frame.

As a further improvement of the above technical solution, the grinding power assembly includes: the screw driving gear is connected with the screw driven gear; an output shaft of the screw motor is vertically fixed in a screw motor shaft hole in the center of the screw driving gear, and four screw driven gears are uniformly distributed on the screw driving gear and are meshed with the screw driving gear; the screw gear cover is sleeved outside the screw driving gear and the screw driven gear, a screw motor shaft hole is formed in the center of the upper surface of the screw gear cover, and four screw holes are uniformly formed in the four sides of the screw gear cover; the screw rod holes at the front end are matched with the four screw rod holes on the four sides of the screw rod gear cover and are fixedly connected with the screw rod gear cover, and a screw rod slide rail is arranged inside the lower surface of the push-pull screw rod frame; each push-pull screw rod is arranged in the push-pull screw rod frame, a screw rod shaft at the rear end of the push-pull screw rod frame extends into a screw rod hole at the rear end of the push-pull screw rod frame, and a screw rod shaft at the front end of the push-pull screw rod frame penetrates through a screw rod hole at the front end of the push-pull screw rod frame and a screw rod hole in the screw rod gear cover and is sleeved and fixed on a shaft hole of a screw rod driven gear in the screw rod gear cover.

As a further improvement of the above technical solution, the grinding assembly comprises: the upper end of the threaded sliding block is provided with a front-back through internal thread which is meshed with the thread of the push-pull screw rod on the polishing power assembly and is arranged in a slide rail in the push-pull screw rod frame; a decurrent recess has been seted up to the lower part of screw thread slider, and a horizontal grinding wheel shaft hole has respectively been seted up on both sides about the recess, and the grinding wheel saddle is played in the outside extension in screw thread slider lower extreme both sides, all respectively has seted up a vertically grinding wheel shaft hole on every grinding wheel saddle, and wherein a motor shaft hole has been seted up to one side grinding wheel saddle, on one side at the screw thread slider of motor shaft hole top, is provided with a fixed cover of grinding motor: the two vertical polishing wheels are respectively arranged below the polishing wheel support tables at two sides of the lower end of the threaded sliding block and sleeved on a polishing gear short shaft, and the upper end of the polishing gear short shaft penetrates through the polishing wheel shaft hole in the middle of the polishing wheel support tables at two sides; a grinding motor, the grinding motor is arranged in a motor fixing sleeve on one side of the threaded sliding block, a motor output shaft is sleeved in a driving grinding gear, and the lower end of the motor output shaft extends downwards into a motor shaft hole of one of the grinding wheel supporting tables; two vertical polishing gears are respectively sleeved on polishing gear short shafts extending out of the polishing wheel supporting table from the bottom, one of the vertical polishing gears is meshed with the driving polishing gear, two driven polishing gears are respectively sleeved at two ends of a gear cross shaft fixed in the transverse polishing wheel, and each driven polishing gear is respectively meshed with one vertical polishing gear.

As a further improvement of the above technical solution, the feeding assembly includes: the lower end of the lifting screw is provided with a gear fixing end; the lifting platform is provided with four lifting slide blocks outwards and uniformly, the center of the lifting platform is provided with an internal thread which is communicated up and down, and the lifting screw is meshed with the internal thread at the center of the lifting platform; the workpiece rack is provided with a lifting screw hole in the center, four frame plates uniformly extend to the periphery, the left side and the right side of the inner side of the upper surface of each frame plate are respectively provided with an upward limiting strip, four lifting slide blocks of the lifting platform are arranged between the two limiting strips, and the outer sides of the four frame plates of the workpiece rack are respectively provided with a left limiting strip and a right limiting strip; the lower end of the lifting screw is sleeved in a lifting screw hole in the center of the workpiece frame, and the lifting platform is arranged on the workpiece frame.

As a further improvement of the above technical solution, the feeding rack comprises: the left and the right are respectively provided with a screw hole, and one side of the screw hole is provided with a lifting motor shaft hole; the shaft hole in the center of each feeding driven gear is fixed on a gear fixing end at the lower end of a lifting screw of the feeding assembly, and the lower end of the gear fixing end is sleeved in a screw hole of the feeding frame; the feeding motor is characterized in that a feeding driving gear is sleeved on an output shaft of the feeding motor, the lower end of the output shaft is sleeved in a motor shaft hole, the feeding driving gear is meshed with one of the feeding driven gears, and the two feeding driven gears are meshed with each other; and a rotating shaft is arranged at the central position below the feeding frame.

As a further improvement of the technical scheme, a supporting rod is arranged on the left side of the frame, a suspended frame pre-stage is arranged at the upper end of the frame, a screw motor sleeve is arranged on a top stage of the frame, and the screw motor sleeve is sleeved outside a screw motor in the grinding power assembly and is fixedly connected to a screw gear cover; the lower end of the rack is provided with a rotating shaft hole which is sleeved on a rotating shaft below the feeding frame.

The utility model has the advantages that: according to the utility model discloses an automatic change metal bench foot polisher promotes four group's grinding wheels through four push-and-pull screw rods, from outside to inside, from inside to outside again, on four to five bench feet on metal bench frame, polishes simultaneously three faces on the left side, the right and the higher authority, through the elevating platform that an elevating screw promoted in addition, has realized the automation of pay-off. The production efficiency is improved, the possibility of suffering from the brute force of workers and getting pneumoconiosis is eliminated, the workers only need to stand by the machine to take down and place the automatically processed workpieces, and the workers do not need to participate in the physical work of polishing and grinding in the whole process.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a top exploded view of a sanding assembly;

FIG. 2 is a bottom exploded view of the sanding assembly;

FIG. 3 is an exploded perspective view of the sanding assembly;

FIG. 4 is an assembled effect view of the sanding assembly;

FIG. 5 is a top exploded view of the push-pull configuration;

FIG. 6 is a bottom exploded view of the push-pull configuration;

FIG. 7 is an exploded view of the single push-pull configuration;

FIG. 8 is an assembled relationship view of the push-pull configuration;

FIG. 9 is a top view of the push-pull mechanism during assembly;

FIG. 10 is a bottom view of the assembled push-pull structure;

FIG. 11 is a bottom perspective view of the push-pull configuration and sanding assembly after assembly;

FIG. 12 is a top view of the push-pull configuration and sanding assembly assembled;

FIG. 13 is a bottom view of the push-pull configuration and sanding assembly assembled;

FIG. 14 is a detailed top view of the lift screw and lift table;

FIG. 15 is a bottom detail view of the lift screw and lift table;

FIG. 16 is a bottom view of the lift assembly and the workpiece holder;

FIG. 17 is a top view of the lift assembly and workpiece holder of FIG. 17;

FIG. 18 is a diagram of the effect of stacking the lift assembly and the workpiece;

FIG. 19 is a combination view of the lift assembly and workpiece stacking;

FIG. 20 is a perspective view of the lift assembly, workpiece stacker and grinding assembly combination;

FIG. 21 is a bottom view of the lift assembly, workpiece stack and grinding assembly;

FIG. 22 is an exploded view of the mobile base;

FIG. 23 is an assembled effect view of the movable base alone;

FIG. 24 is a diagram of the relationship of the movable base and the processing unit;

FIG. 25 is an assembled effect view of the movable base and the respective processing parts;

FIG. 26 is a structural relationship diagram of the frame and the mobile base;

FIG. 27 is a perspective view of the entire machine after assembly;

fig. 28 is a bottom view of the entire machine after assembly.

Reference numerals

1 threaded slide block 2 motor fixing sleeve 3 transverse polishing wheel 4 vertical polishing wheel

5 grinding motor 6 grinding gear minor axis 7 initiative grinding gear 8 vertical grinding gear

9 driven grinding gear 10 grinding wheel shaft hole 11 slider screw thread 12 grinding wheel saddle

13 gear horizontal shaft 14 push-pull screw 15 push-pull screw frame 16 screw motor

17 screw gear cover 18 screw motor shaft hole 19 screw hole 20 screw driven gear

21 screw slide rail 22 screw driving gear 23 motor fixing shaft hole 24 metal stool frame

25 metal stool leg 26 lifting screw 27 lifting platform 28 gear fixed end

29 limiting strip for lifting screw hole 31 and frame plate 32 of workpiece rack 30

33 lifting motor 34 feeding driving gear 35 feeding driven gear 36 feeding frame

37 screw hole 38 feeding frame rotating shaft 39 rack 40 screw motor sleeve

41 rotating shaft hole 42 frame base 43 frame top table 44 internal thread

45 lifting slide block 46 motor shaft hole

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.

As shown in fig. 1-28, the utility model is realized by the following technical scheme: the automatic metal stool foot polisher includes: a grind the power assembly, including the output shaft of a screw motor 16 is fitted with a screw driving gear 22, four screw driven gears 20 engage with screw driving gear 22, one end of four push-and-pull threaded spindles 14 crosses a screw gear cover 17 and is fitted in screw driven gear 20, two ends of four push-and-pull threaded spindles 14 are set up in four push-and-pull threaded spindle racks 15; the polishing machine comprises four polishing assemblies, wherein each polishing assembly is meshed with a push-pull screw 14 of the polishing assembly through an internal thread 11 at the upper end of a threaded sliding block 1 and is arranged in a sliding rail 21 of a push-pull screw frame 15, and five gears 7, 8 and 9 driven by a polishing motor 16 and three polishing wheels 3 and 4 are respectively arranged below each polishing assembly: two feeding assemblies, the feeding assemblies are arranged below the grinding power assembly and the grinding assembly and are arranged on the feeding frame 36, the feeding assemblies are meshed with the internal thread 44 of the lifting platform 27 through a lifting screw 26 and are sleeved in the lifting screw hole 30 of the workpiece frame 29: a feeding rack 36, said feeding rack 36 is sleeved in two screw holes 37 by the gear fixed end 28 of the feeding component lifting screw 26, the screw fixed end 28 of the lifting screw 26 is sleeved in two feeding driven gears 35, so as to support said feeding component, the output shaft of a lifting motor 33 is sleeved in the feeding driving gear 34, the feeding driving gear 34 is engaged with the feeding driven gears 35, a rotating shaft 38 is arranged below the feeding rack 36: a frame 39, a top platform 43 at the upper end of the frame 39 is sleeved on the screw motor 16 of the polishing power component by a screw motor sleeve 40 and is fixedly connected with the screw gear sleeve 17 so as to support the polishing component, and a rotating shaft hole 41 at the lower end of the frame 39 is sleeved on the rotating shaft 38 below the feeding frame 36.

As shown in fig. 5-10, the sanding power assembly includes: a screw motor 16, a screw driving gear 22, four screw driven gears 20; an output shaft of the screw motor 16 is vertically fixed in a screw motor shaft hole 23 in the center of the screw driving gear 22, and four screw driven gears 20 are uniformly distributed on the screw driving gear 22 and are meshed with the screw driving gear 22; a screw gear cover 17, the screw gear cover 17 is sleeved outside the screw driving gear 22 and the screw driven gear 20, a screw motor shaft hole 18 is arranged at the center of the upper surface of the screw gear cover 17, and four screw holes 19 are uniformly arranged at the peripheral sides; four push-pull screw racks 15, wherein screw holes 19 are formed at two ends of each push-pull screw rack 15, the screw holes 19 at the front ends are matched with four screw holes 19 on the four sides of the screw gear cover 17 and fixedly connected with the screw gear cover 17, and a screw slide rail 21 is formed inside the lower surface of each push-pull screw rack 15; and each push-pull screw 14 is arranged in the push-pull screw frame 15, a screw shaft at the rear end of the push-pull screw frame 14 extends into a screw hole 19 at the rear end of the push-pull screw frame 15, and a screw shaft at the front end of the push-pull screw frame 15 penetrates through the screw hole 19 at the front end of the push-pull screw frame 15 and the screw hole 19 on the screw gear cover 17 and is sleeved and fixed on a shaft hole of a screw driven gear 20 in the screw gear cover 17.

As shown in fig. 1-4, the sanding assembly includes: the upper end of the threaded sliding block 1 is provided with a front-back through internal thread 11 which is meshed with the thread of a push-pull screw 14 on the grinding power assembly and is arranged in a slide rail 21 in a push-pull screw frame 15; a downward groove is formed in the lower portion of the threaded sliding block 1, a transverse grinding wheel shaft hole 10 is formed in each of the left side and the right side of the groove, a grinding wheel supporting table 12 extends outwards from each of the two sides of the lower end of the threaded sliding block 1, each grinding wheel supporting table 12 is provided with a vertical grinding wheel shaft hole 10, a motor shaft hole 44 is formed in one grinding wheel supporting table 12, and a grinding motor fixing sleeve 2 is arranged on one side of the threaded sliding block 1 above the motor shaft hole 44; a transverse polishing wheel 3 arranged in a groove below the threaded sliding block 1 and sleeved on a gear transverse shaft 13, two ends of the gear transverse shaft 13 respectively extend out of polishing wheel shaft holes 10 on two sides of the groove, two vertical polishing wheels 4 are respectively arranged below polishing wheel support tables 12 on two sides of the lower end of the threaded sliding block 1 and sleeved on a polishing gear short shaft 6, and the upper end of the polishing gear short shaft 6 penetrates out of the polishing wheel shaft hole 10 in the middle of the polishing wheel support tables 12 on two sides; a grinding motor 5, the grinding motor 5 is arranged in a motor fixing sleeve 2 at one side of the threaded sliding block 1, an output shaft of the grinding motor 5 is sleeved in a driving grinding gear 7, and the lower end of the grinding motor 5 downwards extends into a motor shaft hole 46 of one of the grinding wheel supporting tables 12; two vertical grinding gears 4 are respectively sleeved on grinding gear short shafts 6 extending out of a grinding wheel saddle 12 from bottom, one of the vertical grinding gears is meshed with a driving grinding gear 7, two driven grinding gears 9 are respectively sleeved at two ends of a gear transverse shaft 13 fixed in a transverse grinding wheel 3, and each driven grinding gear 9 is respectively meshed with one vertical grinding gear 8.

As shown in fig. 14-21, the feed assembly includes: a lifting screw 26, a gear fixing end 28 is arranged at the lower end of the lifting screw 26; the lifting platform 27 is provided with four lifting slide blocks 45 which are uniformly distributed outwards, the center of the lifting platform 27 is provided with an internal thread 44 which is through up and down, and the lifting screw 26 is meshed with the internal thread 44 in the center of the upgrading platform 27; a workpiece rack 29, wherein a lifting screw hole 30 is arranged at the center of the workpiece rack 29, four frame plates 31 uniformly extend to the periphery, an upward limit strip 32 is respectively arranged at the left side and the right side of the inner side of the upper surface of each frame plate 31, four lifting slide blocks 45 of a lifting platform 27 are arranged between the two limit strips 32, and the left side and the right side of the outer side of the four frame plates 31 of the workpiece rack 29 are respectively provided with the two limit strips 32; the lower end of the lifting screw 26 is sleeved in a lifting screw hole 30 in the center of the workpiece rack 29, and the lifting platform 27 is arranged on the workpiece rack 29.

As shown in fig. 22-25, the feeding rack 36 includes: the left and the right are respectively provided with a screw rod hole 37, and one side of the screw rod hole is provided with a lifting motor shaft hole 46; the central shaft hole of each feeding driven gear 35 is fixed on a gear fixing end 28 at the lower end of the lifting screw 26 of the feeding assembly, and the lower end of the gear fixing end 28 is sleeved in a screw hole 37 of the feeding frame 36; a feeding motor 33, wherein a feeding driving gear 34 is sleeved on an output shaft of the feeding motor 33, the lower end of the output shaft is sleeved in a shaft hole 46 of the lifting motor, the feeding driving gear 34 is meshed with one feeding driven gear 35, and the two feeding driven gears 35 are mutually meshed; a rotary shaft 38 is provided at a central position below the feed frame 36.

As shown in fig. 26-28, a supporting rod is disposed on the left side of the frame 39, a suspended frame top table 43 is disposed at the upper end of the frame 39, a screw motor sleeve 40 is disposed on the frame top table 43, and the screw motor sleeve 40 is disposed outside the screw motor 16 in the grinding power assembly and is fixedly connected to the screw gear cover 17; the lower end of the frame 39 is provided with a rotating shaft hole 41 which is sleeved on the rotating shaft 38 below the feeding frame.

The operating principle of the product is explained below:

1, polishing power assembly

The screw driving gear 22 is driven to rotate by an output shaft of the screw motor 16, and as the screw driven gears 20 are meshed with the screw driving gear 22, the four screw driven gears 20 are also driven to rotate, the push-pull screw 14 makes a circular motion, power is transmitted to the threaded slider 1 sleeved on the push-pull screw 14, and the threaded slider 1 makes a linear motion from one end to the other end of the push-pull screw 14, so that the polishing assembly is pushed and pulled to perform a reciprocating motion, the screw motor 16 rotates forwards, the polishing assembly makes a linear motion from outside to inside, the screw motor 16 rotates backwards, and the polishing assembly makes a linear motion from inside to outside.

2, polishing component

Before the grinding components work, the grinding power component push-pull screw 14 is in standby at the outermost end, one transverse grinding wheel 3 and two vertical grinding wheels 4 of each grinding component are positioned at the outermost front end surface of a metal stool foot 25 of a processed object, when the grinding work is started, the output shaft of the grinding motor 5 drives the driving grinding gear 7 to rotate forwards, the driving grinding gear 7 is meshed with one of the two vertical grinding gears 8 to drive the vertical grinding gear 8 to rotate backwards, this vertical grinding gear 8 drives this driven grinding gear 9 corotation again because of meshing 9 with a driven grinding gear on the same side, and this driven grinding gear is carried 9 power and is established the driven grinding gear 8 of the other end of gear cross axle 13 cover, and the driven grinding gear 9 of the other end also follows corotation, drives the corotation of vertical grinding gear 8 on the same side with it again. In this process, the driving gear 7 simultaneously rotates the transverse polishing wheel 3 positioned above the middle and the vertical polishing wheels 4 on both sides through the two vertical polishing gears 8 and the two driven polishing gears 9, that is, the two vertical polishing gears 8 drive the two vertical polishing wheels 4 to rotate in opposite directions and in positive directions, and the two driven polishing gears 8 drive the transverse polishing gear 3 to rotate clockwise through the gear transverse shaft 13.

When the screw motor 16 in the grinding power assembly rotates forwards, the push-pull screw 14 drives the grinding assembly to move from outside to inside on the metal stool leg 25 of the workpiece to be ground, the grinding motor 5 rotates forwards, one of the two vertical grinding wheels 4 rotates backwards, the transverse grinding wheel 3 rotates forwards, and the other vertical grinding wheel 4 also rotates forwards; when the three grinding wheels 3 and 4 reach the innermost side of the metal stool leg 25, the screw motor 16 in the grinding power assembly pushes the push-pull screw 14 to move from inside to outside through the gears 20 and 22, at the moment, the grinding motor 5 drives the driving grinding gear 7 to rotate reversely, one of the two vertical grinding gears 8 drives one vertical grinding wheel 4 to rotate positively, the transverse grinding wheel 3 is driven by the two driven grinding gears 9 to rotate negatively, and the other vertical grinding wheel 4 also rotates negatively.

In the process, when the grinding assembly is driven by the push-pull screw 14 to move from outside to inside, the transverse grinding wheel 3 can grind the front end surface of the metal stool leg 25 of the workpiece once, then the transverse grinding wheel 3 is pulled up and attached to the upper surface of the metal stool leg 25, the left vertical grinding wheel 4 and the right vertical grinding wheel 4 are attached to the left side and the right side of the metal stool leg 25, and the three grinding wheels 3 and 4 simultaneously polish and grind the metal stool leg 25; when the innermost part of a workpiece is ground, the push-pull screw 14 of the grinding power assembly pushes the grinding assembly from inside to outside, the rotating directions of the three grinding wheels 3 and 4 are just opposite to that when the grinding wheels move from outside to inside, the left surface and the right surface of each metal stool foot 25 are polished in a reverse direction, the grinding motor 5 stops power output until the outermost end, and the screw motor 16 of the grinding power assembly also stops working and receives an instruction for grinding the next workpiece.

Because the whole grinding assembly is provided with the grinding arm consisting of the four push-pull screw rods 14 and the push-pull screw rod frame 15, the four feet 25 of the workpiece object metal stool frame 24 to be processed can simultaneously carry out two grinding operations of three surfaces from outside to inside and from outside to inside, thereby greatly saving the labor and improving the working efficiency of grinding and polishing.

After a metal footstool is polished, workers only need to take the metal footstool away.

Because some metal bench frame 24 have five bench feet 25, this product can increase a push-and-pull screw 14 and supporting part and a subassembly of polishing more, becomes five arms work, five subassemblies of polishing should be regarded as the content that the technical scheme of the utility model includes and extend.

2, feeding work

The feeding assembly is used for automatically providing feeding work of a polished workpiece for the polishing assembly, when one workpiece is polished, the lifting motor 33 arranged on the feeding frame 36 drives the feeding driving gear 34 to rotate anticlockwise, the feeding driving gear 34 drives one of the two feeding driven gears 35 to rotate clockwise, the lifting screw 26 with the lower end fixed in the central screw hole 37 of the feeding driven gear 35 also rotates clockwise, the lifting table 27 is lifted upwards through meshing with the internal thread 44 of the lifting table 27, and as the four lifting slide blocks 45 on the lifting table 27 are limited by the limiting strips 32 of the workpiece frame 29 in four directions, the lifting slide blocks can only be pushed upwards by the lifting screw 26 without sliding; conversely, the elevating motor 33 rotates reversely, and the elevating platform 27 driven by the elevating screw 26 descends.

Because the metal stool frames 24 of the workpieces to be processed are vertically stacked and stacked on the workpiece frame 29, when the uppermost workpiece 24 is processed by the polishing assembly, the lifting motor 33 firstly enables the lifting screw 26 to rotate clockwise through the feeding driving gear 34 and the feeding driven gear 35, the stack of the workpieces 24 can descend by a distance of two workpiece heights, the processed workpiece 24 is separated from the polishing wheels 3 and 4, and the workpiece 24 can be conveniently taken out by workers; the elevator motor 33 is then rotated further counterclockwise, and the elevator screw 26 is rotated clockwise by the power transmission of the gears 34, 35, so that the remaining workpiece 24 is lifted up to a predetermined position of the grinding wheels 3, 4, and the operation of the push-pull screw 14 and the grinding wheels 3, 4 is started.

In the grinding process, as the lower part of the workpiece 24 to be processed is stacked on the next workpiece 24, the next workpiece 24 is limited in the limiting strip 32 of the workpiece frame 29, one transverse grinding wheel 3 and two vertical grinding wheels 4 in the four grinding assemblies pushed by the four push-pull screws 14 can clamp and fix the four metal stool feet 25 of the workpiece 24 to be ground, which are higher than the limiting strip 32, stably, and the workpiece 24 cannot slide away.

During the feeding operation, because the two feeding driven gears 35 are meshed with each other, no workpiece 24 is stacked on the feeding assembly driven by the other feeding driven gear 35, when the feeding driven gear 35 which is feeding rotates forwards, the idle feeding assembly rotates backwards just right, the lifting platform 27 pushed by the lifting screw 26 driven by the feeding driven gear 35 moves from top to bottom on the workpiece rack 29, and the moving direction of the lifting platform 27 which is feeding from bottom to top is just opposite. The feeding assembly is used for preparing new workpiece stacking, when the last metal stool leg 25 is polished by the feeding assembly which is feeding upwards, the lifting platform 27 on the idle feeding assembly just descends to the lowest position, and in the descending process of the lifting platform 27, a worker only needs to stack a new workpiece 24 to be processed on the idle workpiece rack 29. After the working feeding assembly finishes the task, a worker only needs to rotate the feeding frame 36 by 180 degrees through the rotating shaft 38 below the feeding frame 29 and the rotating shaft sleeve 41 below the rack 36 to place the prepared feeding assembly below the grinding assembly, and the feeding assembly which is just working is in an idle state. When the workpieces 24 on the preliminary feeding assembly are ground, the lifting motor 33 arranged on the feeding frame 36 is opposite to the rotation aspect of the previous feeding operation, and the workpieces 24 can be lifted up one by setting the motor to rotate forwards.

3, the frame, the top platform 43 of frame 39 upper end is for holding polish power component, fixes screw motor 16 through screw motor cover 40, and the lower terminal surface of screw motor 16 cover and the up end of screw gear cover 17 can link together through modes such as welding or nut screw, further plays the effect of steadily holding in the palm power component and the subassembly of polishing. The rotating shaft hole 41 below the frame 39 is sleeved on the rotating shaft 38 below the feeding frame 36, so that the feeding frame 36 can rotate for 360 degrees. The lower part of the frame 39 can be directly placed and fixed on the ground, and also can be provided with a plurality of supporting feet.

4, since the metal stool leg 25 as the polishing work piece 24 to be polished is generally wide inside and narrow outside, the polishing wheels 3, 4 can be designed into three layers: the first layer is a rigid body with a short shaft hole, the second layer is an elastic body capable of extending inwards and outwards, and the third layer is a grinding body consisting of a grinding wheel or abrasive paper. When the grinding is carried out, no matter the width of each part of the metal stool leg 25, the telescopic elastic layer can automatically adjust the distance between the telescopic elastic layer and the three contact surfaces of the metal stool leg 25 by compressing and elastically stretching the grinding body.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (6)

1. An automated metal stool leg sander, the automated metal stool leg sander comprising: a grinding power assembly comprises a screw driving gear sleeved on an output shaft of a screw motor, four screw driven gears meshed with the screw driving gear, four push-pull screws, a screw gear cover and four sets of push-pull screws, wherein one ends of the four push-pull screws penetrate through the screw gear cover and are sleeved in the screw driven gears, and two ends of the four push-pull screws are arranged in four push-pull screw frames; each polishing assembly is meshed with a push-pull screw of the polishing assembly through an internal thread at the upper end of a threaded sliding block and is arranged in a sliding rail of a push-pull screw frame, and five gears and three polishing wheels driven by a polishing motor are arranged below each polishing assembly; the feeding component is arranged below the polishing power component and the polishing component and is arranged on the feeding frame, and the feeding component is meshed with the internal thread of a lifting platform through a lifting screw rod and is sleeved in a lifting screw rod hole of a workpiece frame; the feeding frame is sleeved in the two screw holes by the gear fixed end of the lifting screw of the feeding assembly, the screw fixed end of the lifting screw is sleeved in the two feeding driven gears to support the feeding assembly, the output shaft of a lifting motor is sleeved in the feeding driving gear, the feeding driving gear is meshed with the feeding driven gears, and a rotating shaft is arranged below the feeding frame; the top platform at the upper end of the frame is sleeved on a screw motor of the polishing power assembly through a screw motor sleeve and is fixedly connected with a screw gear cover so as to support the polishing assembly, and a rotating shaft hole at the lower end of the frame is sleeved on a rotating shaft below the feeding frame.

2. The automated metal stool foot sander of claim 1, wherein the sanding power assembly comprises: the screw driving gear is connected with the screw driven gear; an output shaft of the screw motor is vertically fixed in a shaft hole in the center of the screw driving gear, and four screw driven gears are uniformly distributed on the screw driving gear and are meshed with the screw driving gear; the screw gear cover is sleeved outside the screw driving gear and the screw driven gear, a screw motor shaft hole is formed in the center of the upper surface of the screw gear cover, and four screw holes are uniformly formed in the peripheral sides of the screw gear cover; the screw rod holes at the front end are matched with the four screw rod holes on the four sides of the screw rod gear cover and are fixedly connected with the screw rod gear cover, and a screw rod slide rail is arranged inside the lower surface of the push-pull screw rod frame; each push-pull screw rod is arranged in the push-pull screw rod frame, a screw rod shaft at the rear end of the push-pull screw rod frame extends into a screw rod hole at the rear end of the push-pull screw rod frame, and a screw rod shaft at the front end of the push-pull screw rod frame penetrates through a screw rod hole at the front end of the push-pull screw rod frame and a screw rod hole in the screw rod gear cover and is sleeved and fixed on a shaft hole of a screw rod driven gear in the screw rod gear cover.

3. The automated metal stool foot sander of claim 1, wherein each of the sanding assemblies comprises: the upper end of the threaded sliding block is provided with a front-back through internal thread which is meshed with the thread of the push-pull screw rod on the polishing power assembly and is arranged in the slide rail of the push-pull screw rod frame; a downward groove is formed in the lower portion of the threaded sliding block, a transverse grinding wheel shaft hole is formed in each of the left side and the right side of the groove, a grinding wheel supporting table extends outwards from each of the two sides of the lower end of the threaded sliding block, a vertical grinding wheel shaft hole is formed in each grinding wheel supporting table, a motor shaft hole is formed in one side of each grinding wheel supporting table, and a grinding motor fixing sleeve is arranged on one side of the threaded sliding block above the motor shaft hole; the two vertical polishing wheels are respectively arranged below the polishing wheel support tables at two sides of the lower end of the threaded sliding block and are respectively sleeved on a polishing gear short shaft, and the upper end of the polishing gear short shaft penetrates through the polishing wheel shaft hole in the middle of the polishing wheel support tables at two sides; a grinding motor, the grinding motor is arranged in a motor fixing sleeve positioned on one side of the threaded sliding block, an output shaft of the grinding motor is sleeved in a driving grinding gear, and the lower end of the grinding motor downwards extends into a motor shaft hole of one of the grinding wheel supporting tables; two vertical polishing gears are respectively sleeved on polishing gear short shafts extending out of the polishing wheel supporting table from the bottom, one of the vertical polishing gears is meshed with the driving polishing gear, two driven polishing gears are respectively sleeved at two ends of a gear cross shaft fixed in the transverse polishing wheel, and each driven polishing gear is respectively meshed with one vertical polishing gear.

4. The automated metal stool leg sander of claim 1, wherein the feed assembly comprises: the lower end of the lifting screw is provided with a gear fixing end; the lifting platform is provided with four lifting slide blocks outwards and uniformly, the center of the lifting platform is provided with an internal thread which is communicated up and down, and the lifting screw is meshed with the internal thread at the center of the lifting platform; the workpiece rack is provided with a lifting screw hole in the center, four frame plates uniformly extend to the periphery, the left side and the right side of the inner side of the upper surface of each frame plate are respectively provided with an upward limiting strip, four lifting slide blocks of the lifting platform are arranged between the two limiting strips, and the outer sides of the four frame plates of the workpiece rack are respectively provided with a left limiting strip and a right limiting strip; the lower end of the lifting screw is sleeved in a lifting screw hole in the center of the workpiece frame, and the lifting platform is arranged on the workpiece frame.

5. The automated metal stool foot sander of claim 1, wherein the feed carriage comprises: the left and the right are respectively provided with a screw rod hole, and one side of the screw rod hole is provided with a lifting motor shaft hole; the shaft hole in the center of each feeding driven gear is fixed on a gear fixing end at the lower end of a lifting screw of the feeding assembly, and the lower end of the gear fixing end is sleeved in a screw hole of the feeding frame; the feeding motor is characterized in that a feeding driving gear is sleeved on an output shaft of the feeding motor, the lower end of the output shaft is sleeved in a motor shaft hole, the feeding driving gear is meshed with one feeding driven gear, and the two feeding driven gears are meshed with each other; and a rotating shaft is arranged at the center position below the feeding frame.

6. The automatic metal stool foot polisher according to claim 1, wherein a support bar is disposed on a left side of the frame, a suspended top of the frame is disposed on an upper end of the frame, a screw motor housing is disposed on the top of the frame, and the screw motor housing is disposed outside a screw motor in the polishing power assembly and fixedly connected to a screw gear cover; the lower end of the rack is provided with a rotating shaft hole which is sleeved on a rotating shaft below the feeding frame.

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