CN217071890U

CN217071890U - Double-side grinding equipment

Info

Publication number: CN217071890U
Application number: CN202220781398.7U
Authority: CN
Inventors: 陈达幸
Original assignee: Ningbo Bangyi Machinery Technology Co ltd
Current assignee: Ningbo Bangyi Machinery Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-07-29
Anticipated expiration: 2032-04-06

Abstract

The utility model provides a double-sided grinding device, which comprises a frame, wherein two grinding discs are arranged on the frame; the limiting disc is rotatably arranged between the two grinding discs, the rotating direction of the limiting disc is consistent with that of the grinding discs, a plurality of limiting parts are arranged on the circumferential outer wall of the limiting disc, and workpieces on the plurality of limiting parts sequentially pass through a channel between the two grinding discs along with the rotation of the limiting disc so as to realize the grinding processing of two end faces of the workpieces; the feeding mechanism is used for sequentially transmitting the workpieces to positions corresponding to the limiting disc; the pushing mechanism is used for pushing the workpieces which are transmitted to the positions corresponding to the limiting disc to the limiting part one by one; a blanking mechanism; and the workpiece grinding device is used for sequentially unloading the workpieces ground on the limiting part and automatically transmitting the workpieces to the next station. The utility model provides a two-sided grinding equipment can realize the automatic material loading, location, grinding and the unloading of work piece, and whole course of working need not artifical the participation, and machining efficiency is high to save labour's cost.

Description

Double-side grinding equipment

Technical Field

The utility model belongs to the technical field of grind processing equipment technique and specifically relates to a two-sided grinding equipment.

Background

The magnetic steel is mainly used in the fields of various sensors, instruments, electronics, electromechanics, medical treatment, teaching, automobiles, aviation, military technology and the like, and the magnetic performance of the magnetic steel is different according to different metal components of the magnetic steel, so that the magnetic steel has different purposes.

At present, the magnetic steel is produced and manufactured by adopting a powder metallurgy method, and is ground and processed by a grinding device after the production is finished; grinding is the most common and widely used machining method in all machining processes, and the surfaces or edges of many workpieces need to be ground into the required designed shapes, such as chamfering, rounding or irregular plane grinding of the edges of metal parts.

The processing to the magnet steel among the two-sided abrasive machining equipment of current magnet steel need adopt dedicated anchor clamps to carry out manual clamping usually, then puts it and carries out the two-sided of magnet steel and polish in putting the grinding passageway between two mill, and a work piece is polished and is accomplished the back, lift it off, then carries out the clamping of next work piece, polishes, and the processing mode needs to set up the workman of clamping, unloading specially like this, leads to manpower resources waste, and is inefficient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem is, in order to overcome the defect among the prior art, provide a two-sided grinding equipment, can realize the automatic material loading, location, grinding and the unloading of work piece, whole course of working need not artifical the participation, machining efficiency is high to save the labour cost.

In order to solve the problem, the utility model provides a double-sided grinding equipment, the test platform comprises a support, install the mill that two intervals and symmetry set up on the frame, still be equipped with on the frame

The limiting disc is rotatably arranged between the two grinding discs, the rotating axis direction of the limiting disc is parallel to that of the grinding discs, and the limiting disc and the two grinding discs are at least partially overlapped in the rotating axis direction; the peripheral outer wall of the limiting disc is provided with a plurality of limiting parts for positioning workpieces, and when the limiting disc rotates along the axis direction of the limiting disc, the workpieces on the limiting parts sequentially pass through a channel between the two grinding discs so as to grind two end faces of the workpieces;

the feeding mechanism is used for sequentially transmitting the workpieces to positions corresponding to the limiting disc;

the pushing mechanism is used for pushing the workpieces which are transmitted to the positions corresponding to the limiting discs to the limiting part one by one;

a blanking mechanism; and the workpiece grinding device is used for sequentially unloading the workpieces ground on the limiting part and automatically transmitting the workpieces to the next station.

Compared with the prior art, the utility model has the advantages that:

in the structure of the utility model, a feeding mechanism specially used for feeding workpieces and a discharging mechanism after finishing grinding of the workpieces are arranged on the frame, so as to realize automatic feeding and discharging of the magnetic steel; in addition, a rotating limiting disc is arranged between the two grinding discs, and a plurality of limiting parts are arranged on the circumferential side wall of the limiting disc to perform the matching positioning of the workpiece; the machine base is also provided with a material pushing structure which is used for pushing the workpieces which are transmitted to the corresponding positions by the material feeding mechanism one by one to be automatically matched on the limiting part, so that the production line type grinding process of the workpieces is realized; and when the work piece that grinding process was accomplished on above-mentioned spacing dish rotated to the unloading station, unloading mechanism was automatic to get off the work piece uninstallation in the spacing portion to continue to transmit it to next station backward, this processing process automation degree is high, and whole journey need not artifical the participation, guarantees the uniformity of work piece location, grinding, and efficient.

As a structural form, the limiting part is a first limiting groove formed in the circumferential outer wall of the limiting disc and used for inserting and matching the workpieces. The workpiece in the structure can be directly assembled and limited in each corresponding first limiting groove under the action of the pushing mechanism, and the structure is simple and the operation is convenient.

Furthermore, the pushing mechanism comprises a supporting seat and a first driving cylinder which are connected to the base, and a sliding groove which extends towards the opening of the first limiting groove is formed in the supporting seat; when the workpiece slides into the sliding groove, the first driving cylinder is used for pushing the workpiece into the first limiting groove. In the structure, the workpiece on the feeding mechanism can be matched into the corresponding first limiting groove on the limiting disc according to the set angle by automatic pushing one by the aid of the sliding groove and the first driving cylinder structure, manual operation is not needed, the automation degree is high, and the working efficiency is improved.

In another structure form, the limiting part comprises a positioning block, a plurality of mounting grooves are uniformly formed in the circumferential outer wall of the limiting disc, the positioning blocks are detachably matched in the corresponding mounting grooves, a second limiting groove used for containing a workpiece is formed in one side, far away from the feeding mechanism, of each positioning block, and a avoiding hole communicated to the second limiting groove is formed in the other side of each positioning block. In the structure form, corresponding positioning blocks are uniformly arranged on the circumferential outer wall of the limiting disc, and corresponding second limiting grooves are formed in the positioning blocks and used for limiting another angle of the workpiece, so that double-side grinding of the workpiece at different angle positions is realized; and the positioning block in the structure can be changed according to the specification of a product, so that the universality of the grinding machine is effectively improved.

Furthermore, the pushing mechanism comprises a supporting seat connected to the base, a second driving cylinder and a third driving cylinder, and a sliding groove extending towards the positioning block is formed in the supporting seat; when the workpiece slides into the sliding groove, the second driving cylinder is used for pushing the workpiece to a position corresponding to the opening of the second limiting groove, and the third driving cylinder is used for pushing the workpiece to the second limiting groove. In the structure, the driving cylinders in two different directions are used for realizing that workpieces on the feeding mechanism are quickly assembled and positioned to the corresponding second limiting groove along the axial position of the limiting disc, the structure is simple, the feeding positioning is quick and effective, and the machining efficiency is improved.

As an improvement, the machine base is further provided with a material pressing mechanism, and the material pressing mechanism is circumferentially pressed and limited on the outer wall of the workpiece or the positioning block, which is close to one end of the grinding disc, of the limiting disc. In the above-mentioned improved structure, increased corresponding swager and constructed, further assurance work piece or the positional stability of locating piece on spacing dish guarantees the position accuracy of work piece double side grinding processing.

In another improvement, the pressing mechanism comprises two fixing plates which are arranged oppositely, four rollers and a pressing belt are connected between the two fixing plates, wherein the two rollers are arranged on the outer side of one end of the grinding disc far away from the limiting disc in an up-and-down symmetrical manner; all the other two the gyro wheel symmetry set up the top and the below of spacing dish, press the inner wall cooperation of material belt four on the outer lane that the gyro wheel encloses into the region, just press the material belt nearly the outer wall laminating of spacing dish one side compresses tightly on the spacing dish is close to on the outer wall of the work piece or the locating piece of mill one end. In the improved structure, the pressing mechanism adopts the elastic pressing belt, so that the pressing and positioning of the corresponding workpiece or positioning block on the limiting disc are realized, and the grinding stability and the machining precision are ensured.

Preferably, the feeding mechanism comprises a feeding conveyor belt and a feeding motor for driving the feeding conveyor belt to horizontally run, first limit baffles are further arranged on the two sides of the machine base in the running direction of the feeding conveyor belt, and a feeding channel with an adjustable interval is formed between the two first limit baffles. In the above-mentioned preferred structure, feed mechanism adopts motor drive's conveyer belt structure, and the pay-off is steady, and speed is controllable to still set up the controllable material loading passageway of interval, make the work piece of different width specifications can effectively inject the direction in material loading transportation process, can not squint, thereby guarantee going on fast of next process.

Preferably, the blanking mechanism comprises a blanking conveyor belt and a blanking motor for driving the blanking conveyor belt to horizontally run, second limiting baffles are further arranged on the two sides of the machine base in the running direction of the blanking conveyor belt, a blanking channel with adjustable space is formed between the two second limiting baffles, and the extending direction of the blanking channel corresponds to the limiting part; and the other side of the limiting part on the machine base is provided with an unloading push rod corresponding to the unloading channel, and the unloading push rod is used for pushing the workpieces on the limiting part into the unloading channel one by one. In the preferred structure, the blanking mechanism also adopts a motor-driven conveyor belt structure, so that blanking is stable, the speed is controllable, and the feeding channels with controllable intervals are arranged, so that workpieces with different width specifications can be effectively limited in direction and cannot be deviated in the feeding and conveying process, and the next process is ensured to be rapidly carried out; in addition, the discharging push rod is additionally arranged in the structure, so that the workpiece ground on the limiting disc can be automatically discharged to a corresponding discharging channel, and the workpiece is automatically transmitted to the next station under the action of the discharging conveyor belt, and the automatic operation of the whole discharging process is realized.

Drawings

Fig. 1 is a schematic perspective view of a double-side grinding apparatus according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of a pressing mechanism in the double-sided grinding apparatus of the present invention;

FIG. 3 is an enlarged view of the structure at X in FIG. 1;

FIG. 4 is a schematic perspective view of a double-side grinding apparatus according to a second embodiment of the present invention;

fig. 5 is an enlarged schematic view of the structure at Y in fig. 4.

Description of reference numerals:

1. a machine base; 2. a grinding disc; 3. a limiting disc; 3.1, mounting grooves; 4. a first limit groove; 5. a supporting seat; 5.1, a chute; 6. a first drive cylinder; 7. positioning blocks; 7.1, a second limiting groove; 7.2, avoiding holes; 8. a second drive cylinder; 9. a third drive cylinder; 10. a fixing plate; 11. a roller; 12. pressing a material belt; 13. grinding the motor; 14. a speed reducer;

20. a feeding mechanism; 20.1, a feeding conveyor belt; 20.2, a feeding motor; 20.3, a first limit baffle;

30. a blanking mechanism; 30.1, blanking and conveying belts; 30.2, a blanking motor; 30.3, a second limit baffle; 30.4, a discharging push rod; 40. and (5) a workpiece.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that the terms "upper, lower", "front and back", "left and right", "side wall", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1 and 2, the present invention provides a double-side grinding device, which comprises a frame 1, two grinding discs 2 arranged symmetrically and at an interval are arranged at the rear side of the middle position of the frame 1, and a driving mechanism for driving the grinding discs 2 to run, wherein the driving mechanism mainly comprises a grinding motor 13 and a speed reducer 14, the center position of the grinding disc 2 is fixedly connected to the output shaft of the speed reducer 14, and the grinding disc 2 rotates along the front-back direction of the frame 1; in addition, the base 1 is also provided with a limiting disc 3 which is rotatably arranged between the two grinding discs 2, the rotating axis direction of the limiting disc 3 is parallel to the rotating axis direction of the two grinding discs 2, and the limiting disc 3 and the two grinding discs 2 are at least partially overlapped in the rotating axis direction; a plurality of limiting parts for positioning the workpieces 40 are arranged on the circumferential outer wall of the limiting disc 3, and when the limiting disc 3 rotates along the axis direction of the limiting disc, the workpieces 40 on the plurality of limiting parts sequentially pass through a channel between the two grinding discs 2, so that double-sided processing of the workpieces 40 is realized under the grinding action of the grinding discs 2 on the two sides; in the actual machining process, the allowance needed to be ground on the two sides of the workpiece 40 is small, so when the limiting disc 3 rotates to drive the workpiece 40 to just start to reach a grinding channel between the two grinding discs 2, the two grinding discs 2 start to grind the allowance on the two sides of the workpiece 4, and the finished grinding process of one workpiece 40 is finished until the workpiece 4 which enters the grinding channel at the very beginning rotates to separate from the grinding channel.

On the other hand, in order to further realize the automation process of processing the workpiece 40, in the embodiment, a feeding mechanism 20 and a discharging mechanism 30 extending in the left-right direction are further provided at the front side of the machine base 1; wherein the feeding mechanism 20 is used for sequentially transmitting the workpieces 40 to the positions corresponding to the limiting discs 3; the blanking mechanism 30 is used for sequentially unloading the workpiece 40 ground on the limiting part and automatically transmitting the workpiece 40 to the next station, so that automatic loading and blanking of the workpiece 40 are realized, a manual loading and unloading process is replaced, the safety is better, and the efficiency is high;

on the other hand, in the above structure, a material pushing mechanism is further disposed at a position between the feeding mechanism 20 and the discharging mechanism 30 at the front side of the base 1, and is used for pushing the workpieces 40 transmitted to the position corresponding to the limiting disc 3 to the limiting part one by one; namely, the workpieces 40 enter the feeding structure 20 in sequence from the previous process in the machining process, the workpieces 40 sequentially move to the position corresponding to the limiting disc 3 under the driving action of the feeding mechanism 20, then the pushing mechanism automatically pushes the workpieces 40 at the position to the corresponding limiting part on the limiting disc 3 one by one to realize automatic positioning of the workpieces 40, further, along with the rotation of the limiting disc 3, the workpieces 40 in the limiting part slowly pass through a grinding channel between the two grinding discs 2 to realize the grinding machining of two corresponding side surfaces of the workpieces 40, and along with the continuous rotation of the limiting disc 3, the corresponding workpieces 40 are continuously pushed to the limiting part at the corresponding position, so that the assembly line type grinding machining process of the workpieces 40 is realized; and when the workpiece 40 that grinding process was accomplished on above-mentioned spacing dish 3 rotates to the unloading station, unloading mechanism 30 unloads the work piece 40 in the spacing portion automatically to continue to convey it to next station backward, this processing process degree of automation is high, and whole journey need not artifical the participation, guarantees the uniformity of work piece 40 location, grinding, and efficient.

As shown in fig. 1 and 3, in the present embodiment, the limiting portion is a first limiting groove 4 formed on the circumferential outer wall of the limiting disc 3, the workpiece 40 can be directly inserted and fitted in the first limiting groove 4 at a set grinding angle under the action of the pushing mechanism, and when the workpiece 40 is fitted in the first limiting groove 4, the side surfaces of the two ends of the workpiece 40 are ensured to exceed the two side surfaces of the limiting disc 3.

Specifically, the pushing mechanism comprises a supporting seat 5 and a first driving cylinder 6 which are connected to the base 1, wherein a sliding groove 5.1 extending towards the opening position of the first limiting groove 4 is formed in the supporting seat 5, namely the sliding groove 5.1 extends along the front-back direction of the base 1, and a push rod of the first driving cylinder 6 extends towards the rear side of the base 1; when the workpiece 40 slides into the chute 5.1, the first driving cylinder 6 is used for pushing the workpiece 40 into the first limit groove 4.

Further, in this embodiment, in order to ensure the stability of the workpiece 40 on the limiting disc 3 and improve the grinding precision, a material pressing mechanism is further provided on the base 1, and the material pressing mechanism is circumferentially pressed and limited on the outer wall of the workpiece 40 at one end of the limiting disc 3 close to the grinding disc 2.

More specifically, as shown in fig. 2, the pressing mechanism includes two fixing plates 10 disposed opposite to each other, in the figure, the fixing plate 10 and the grinding disc 2 structure on one side are hidden, and only one fixing plate 10 structure is shown; four idler wheels 11 and a pressing belt 12 are connected between the two fixing plates 10, wherein the two idler wheels 11 are symmetrically arranged on the outer side of one end of the grinding disc 2 far away from the limiting disc 3, namely the rear side of the machine base 1; the setting of all the other two 11 symmetries of gyro wheel is in the top and the below of spacing dish 3, press the inner wall cooperation of material belt 12 to enclose into regional outer lane at four gyro wheels 11, and press the outer wall laminating of material belt 12 nearly spacing dish 3 one side to compress tightly on the outer wall of spacing dish 3 work piece 40 that is close to 2 one ends of mill, the realization is further compressed tightly spacingly to the work piece 40 of spacing 3 rear side positions of dish, and this presses material belt 12 to be the elastic component, along with spacing dish 3 slowly rotates the in-process, the work piece 40 that is located its the place ahead slowly moves backward to press the region of compressing tightly of material belt 12, make work piece 40 compress tightly spacing between first spacing groove 4 and material belt 12.

In addition, as shown in fig. 1, the feeding mechanism 20 in this embodiment includes a feeding conveyor belt 20.1 and a feeding motor 20.2 for driving the feeding conveyor belt 20.1 to horizontally move, first limiting baffles 20.3 are further disposed on two sides of the machine base 1 in the moving direction of the feeding conveyor belt 20.1, and a feeding channel with an adjustable distance is formed between the two first limiting baffles 20.3.

In addition, the blanking mechanism 30 comprises a blanking conveyor belt 30.1 and a blanking motor 30.2 for driving the blanking conveyor belt 30.1 to horizontally run, second limit baffles 30.3 are further arranged on the two sides of the machine base 1 in the running direction of the blanking conveyor belt 30.1, a blanking channel with adjustable space is formed between the two second limit baffles 30.3, and the extending direction of the blanking channel corresponds to the limit part; the other side of the limiting part on the machine base 1 corresponding to the blanking channel is also provided with a discharging push rod 30.4 which is used for pushing the workpieces 40 on the limiting part into the blanking channel one by one, and the workpieces 40 are continuously conveyed backwards to the next station along with the operation of the blanking conveyor belt 30.1. In the structure, the discharging push rod 30.4 directly pushes the workpiece 40 in the first limit groove 4 to the discharging channel from the right to the left.

Example two:

as shown in fig. 4 and 5, the structure of the present embodiment is substantially the same as that of the embodiment, and the only difference is the structure of the stopper portion, which is determined by the position of the end surface of the workpiece 40 to be ground. The structure of the first embodiment mainly realizes grinding of both ends of the workpiece 40 in the length direction, and if the workpiece 40 needs to be ground in the width direction, the workpiece 40 needs to be positioned at another angle, so it is obvious that the structural form of the first limit groove 4 in the structure of the first embodiment cannot realize stable limit of grinding of the workpiece 40 in the width direction.

Specifically, in this embodiment, the limiting portion includes a positioning block 7, a plurality of mounting grooves 3.1 are uniformly formed in the circumferential outer wall of the limiting disc 3, the plurality of positioning blocks 7 are detachably fitted in the corresponding mounting grooves 3.1, a second limiting groove 7.1 for accommodating the workpiece 40 is formed in one side of each positioning block 7, which is away from the feeding mechanism 20, and a avoiding hole 7.2 communicated to the second limiting groove 7.1 is formed in the other side of the positioning block 7, when the workpiece 40 is loaded into the second limiting groove 7.1 in the width direction, the large end of the workpiece 40 is exposed on one side of the limiting disc 3, which is close to the blanking mechanism 30, and the small end of the workpiece 40 penetrates through the avoiding hole 7.2 and is exposed on the other side of the limiting disc 3.

On the other hand, due to the particularity of the limiting angle of the workpiece 40, the workpiece 40 on the feeding mechanism 20 cannot be pushed to the position at one time, in this embodiment, the feeding mechanism includes a supporting seat 5 connected to the machine base 1, a second driving cylinder 8 and a third driving cylinder 9, a push rod of the second driving cylinder 8 extends towards the rear side of the machine base 1, and a push rod of the third driving cylinder 9 extends towards the right side of the machine base 1; the supporting seat 5 is provided with a sliding chute 5.1 extending towards the position of the positioning block 7, namely the sliding chute 5.1 extends along the front-back direction of the machine base 1; when the feeding mechanism 20 drives the workpiece 40 to slide into the sliding chute 5.1, the second driving cylinder 8 is used for pushing the workpiece 40 to a position corresponding to the opening of the second limiting groove 7.1, wherein the position is that the workpiece 40 corresponds to the left opening of the second limiting groove 7.1 in the axial direction of the limiting disc 3, and then the third driving cylinder 9 continues to push the workpiece 40 to enable the workpiece 40 to be in motion fit with the second limiting groove 7.1, so that the workpiece 40 is automatically fed and positioned in the width direction.

In the structure, in the rotating process of the limiting disc 3, the auxiliary pressing position of the pressing belt 12 is arranged outside the positioning block 7, so that the positioning block 7 is pressed and limited between the mounting groove 3.1 and the pressing belt 12, and the indirect limitation of the workpiece 40 is realized. In addition, during discharging, the discharging push rod 30.4 pushes the workpiece 40 into the discharging channel through the avoiding hole 7.2 in the direction from right to left.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. The double-sided grinding equipment comprises a machine base (1), wherein two grinding discs (2) which are arranged at intervals and symmetrically are arranged on the machine base (1), and the double-sided grinding equipment is characterized in that the machine base (1) is further provided with a grinding disc (2)

The limiting disc (3) is rotatably arranged between the two grinding discs (2), the rotating axis direction of the limiting disc (3) is parallel to the rotating axis direction of the grinding discs (2), and the limiting disc (3) and the two grinding discs (2) are at least partially overlapped in the rotating axis direction; a plurality of limiting parts for positioning the workpieces (40) are arranged on the circumferential outer wall of the limiting disc (3), and when the limiting disc (3) rotates along the axis direction of the limiting disc, the workpieces (40) on the limiting parts sequentially pass through a channel between the two grinding discs (2) so as to grind two end faces of the workpieces (40);

the feeding mechanism (20) is used for sequentially transmitting the workpieces (40) to positions corresponding to the limiting discs (3);

the pushing mechanism is used for pushing the workpieces (40) which are transmitted to the position corresponding to the limiting disc (3) to the limiting part one by one;

and the blanking mechanism (30) is used for sequentially unloading the workpieces (40) which are ground on the limiting part and automatically transmitting the workpieces to the next station.

2. The double-sided grinding apparatus according to claim 1, characterized in that: the limiting part is a first limiting groove (4) formed in the circumferential outer wall of the limiting disc (3) and used for allowing the workpieces (40) to be inserted and matched.

3. The double-side grinding apparatus according to claim 2, wherein: the pushing mechanism comprises a supporting seat (5) and a first driving cylinder (6), the supporting seat (5) is connected to the base (1), and a sliding groove (5.1) extending towards the opening position of the first limiting groove (4) is formed in the supporting seat (5); when the workpiece (40) slides into the sliding groove (5.1), the first driving cylinder (6) is used for pushing the workpiece (40) into the first limiting groove (4).

4. The double-sided grinding apparatus according to claim 1, characterized in that: spacing portion includes locating piece (7), even a plurality of mounting grooves (3.1) have been seted up on the circumference outer wall of spacing dish (3), and is a plurality of locating piece (7) detachable cooperation is in corresponding mounting groove (3.1), each keep away from on locating piece (7) second spacing groove (7.1) that are used for holding work piece (40) are seted up to one side of feed mechanism (20), just the opposite side of locating piece (7) is equipped with the intercommunication to dodge hole (7.2) of second spacing groove (7.1).

5. The double-side grinding apparatus according to claim 4, wherein: the pushing mechanism comprises a supporting seat (5) connected to the machine base (1), a second driving cylinder (8) and a third driving cylinder (9), and a sliding groove (5.1) extending towards the position of the positioning block (7) is formed in the supporting seat (5); when the workpiece (40) slides into the sliding groove (5.1), the second driving cylinder (8) is used for pushing the workpiece (40) to a position corresponding to the opening of the second limiting groove (7.1), and the third driving cylinder (9) is used for pushing the workpiece (40) into the second limiting groove (7.1).

6. The double-side grinding apparatus according to claim 3 or 5, wherein: the grinding disc grinding machine is characterized in that a material pressing mechanism is further arranged on the machine base (1), and the material pressing mechanism is circumferentially pressed and limited on the outer wall of a workpiece (40) or a positioning block (7) at one end of the grinding disc (2) close to the limiting disc (3).

7. The double-sided grinding apparatus of claim 6, wherein: the pressing mechanism comprises two fixing plates (10) which are arranged oppositely, four idler wheels (11) and a pressing belt (12) are connected between the two fixing plates (10), and the two idler wheels (11) are arranged on the outer side of one end, away from the limiting disc (3), of the grinding disc (2) in an up-and-down symmetrical mode; the rest two rolling wheels (11) are symmetrically arranged above and below the limiting disc (3), the inner walls of the material pressing belts (12) are matched with the outer rings of the four rolling wheels (11) which are enclosed into an area, and the outer walls of the material pressing belts (12) close to one side of the limiting disc (3) are attached and pressed on the outer walls of the workpieces (40) or the positioning blocks (7) at one ends, close to the grinding disc (2), of the limiting disc (3).

8. The double-sided grinding apparatus according to claim 1, characterized in that: the feeding mechanism (20) comprises a feeding conveyor belt (20.1) and a feeding motor (20.2) for driving the feeding conveyor belt (20.1) to horizontally run, wherein first limit baffles (20.3) are further arranged on the machine base (1) and positioned on two sides of the running direction of the feeding conveyor belt (20.1), and a feeding channel with an adjustable interval is formed between the first limit baffles (20.3).

9. The double-side grinding apparatus according to claim 1 or 8, wherein: the blanking mechanism (30) comprises a blanking conveyor belt (30.1) and a blanking motor (30.2) for driving the blanking conveyor belt (30.1) to horizontally run, second limiting baffles (30.3) are further arranged on the two sides of the machine base (1) in the running direction of the blanking conveyor belt (30.1), a blanking channel with adjustable space is formed between the two second limiting baffles (30.3), and the extending direction of the blanking channel corresponds to the limiting part; and the other side of the limiting part on the machine base (1) is also provided with a discharging push rod (30.4) corresponding to the discharging channel, and the discharging push rod is used for pushing the workpieces (40) on the limiting part into the discharging channel one by one.