CN218857482U

CN218857482U - Abrasive layer pre-pressing forming device for resin diamond grinding wheel

Info

Publication number: CN218857482U
Application number: CN202223342362.8U
Authority: CN
Inventors: 全任茂; 莫浩文; 朱艺添; 王祥慧; 伊贤东; 徐杰华
Original assignee: Guangdong Nade New Materials Co ltd
Current assignee: Guangdong Nade New Materials Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-14
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a pre-pressing forming device for a grinding material layer of a resin diamond grinding wheel, which comprises a pre-pressing mechanism and a forming die, wherein the pre-pressing mechanism is provided with a driver and a pre-pressing piece, the driver is connected with the pre-pressing piece, and the driver controls the pre-pressing piece to do lifting action; the forming die is arranged below the prepressing piece and is provided with a die body, a forming core and a forming cavity, the forming core is arranged in the middle of the die body, and the forming cavity for containing powder to be prepressed is reserved between the forming core and the die body; the prepressing piece and the forming cavity are both annular and matched, a prepressing hole in the middle of the prepressing piece is matched with the forming core, and the driver controls the prepressing piece to be pressed down in the forming cavity so as to prepress powder in the forming cavity into a grinding wheel with a set shape. Therefore, the gas among the powder is fully discharged through the pre-pressing process, the density and the service life of the grinding wheel are improved, and various negative effects brought by increasing the height of the die and widening and heightening the edge of the grinding wheel in the prior art are avoided.

Description

Abrasive layer pre-pressing forming device for resin diamond grinding wheel

Technical Field

The application relates to the technical field of grinding tools, in particular to an abrasive layer pre-pressing forming device for a resin diamond grinding wheel.

Background

Along with the development of the architectural ceramic processing industry, the linear speed of a ceramic tile polishing line is faster and faster, a grinding wheel is required during the ceramic tile polishing, a metal diamond grinding wheel is traditionally used, and a resin diamond grinding wheel is adopted to replace the traditional metal diamond grinding wheel later, so that the resin diamond grinding wheel can avoid the phenomenon of hard-to-hard collision with the ceramic tile, the ceramic tile edging defect can be effectively controlled, and the processing yield of the ceramic tile is improved. Therefore, the production process of the resin diamond grinding wheel is also increasingly emphasized.

The grinding wheel powder used in the production of the resin diamond grinding wheel has relatively small loose ratio (loose ratio refers to loose density of the powder), and the loose ratio of the grinding wheel powder influences the wear resistance and the service life of the processed grinding wheel. At present, in order to solve the problem of small powder bulk ratio of the grinding wheel, the powder loading space is usually increased by increasing the height of a forming die, and then the grinding wheel powder in the forming die is pressed at one time in a manual pressing mode, so that the density of the grinding wheel is increased; or the blade part of the grinding wheel is increased by widening and heightening, so that the wear resistance and the service life of the resin diamond grinding wheel are improved.

However, in the process of implementing the prior art solutions, the applicant finds that the above technology has at least the following technical problems: the method for solving the density problem of the grinding wheel by increasing the height of the forming die can increase the weight of the forming die, so that the cost of the forming die is increased, the labor intensity is increased, and the problem that the gas in a powder gap cannot be smoothly discharged when grinding wheel powder is pressed can not be solved only by increasing the height of the forming die, so that the density and the service life of the grinding wheel after forming can still be influenced;

the volume of the cutting edge of the grinding wheel is increased by widening and heightening the cutting edge of the grinding wheel, the resistance of the grinding wheel is increased, incomplete exhaust can occur during hot pressing production after the volume of the cutting edge of the grinding wheel is increased, and the density and the service life of the grinding wheel are also influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides an abrasive layer pre-pressing forming device for a resin diamond grinding wheel, which solves the technical problems in the prior art that the forming die cost is increased, the grinding wheel resistance is increased, the exhaust is incomplete during hot pressing production of the grinding wheel, the grinding wheel density is affected, the service life is affected, and the like by increasing the height of the forming die and widening and heightening the edge of the grinding wheel.

The embodiment of the application provides an abrasive material layer pre-compaction forming device for resin diamond-impregnated wheel, includes:

the prepressing mechanism is provided with a driver and a prepressing piece, the driver is connected with the prepressing piece, and the driver controls the prepressing piece to do lifting action;

the forming die is arranged below the prepressing piece and is provided with a die body, a forming core and a forming cavity, the forming core is arranged in the middle of the die body, and the forming cavity for containing powder to be prepressed is reserved between the forming core and the die body;

the prepressing piece and the forming cavity are annular and matched, a prepressing hole in the middle of the prepressing piece is matched with the forming core, and the driver controls the prepressing piece to be pressed down in the forming cavity so as to prepress powder in the forming cavity into a grinding wheel with a set shape.

Furthermore, the prepressing part is connected with a link mechanism, and the driver drives/is connected with the link mechanism through a force output shaft or a force output rod so as to drive the prepressing part.

Furthermore, the connecting rod mechanism comprises a connecting rod plate and a plurality of vertical connecting rods, and the vertical connecting rods are circumferentially arranged along the pre-pressing piece;

the lower end of the vertical connecting rod is connected with the prepressing piece, the upper end of the vertical connecting rod is connected with the connecting rod plate, and the connecting rod plate is connected with the output shaft or the output rod of the driver.

Further, still include the workstation, prepressing mechanism passes through bracing piece fixed mounting on the workstation, forming die movable mounting is in on the workstation, and be located prepressing mechanism is under.

Further, the workbench is also provided with a positioning piece for limiting the installation position of the forming die.

Furthermore, a control box is further arranged on the workbench and electrically connected with the driver.

Furthermore, the driver is installed in the pneumatic box, and the link mechanism penetrates into the pneumatic box and is connected with the output shaft or the output rod of the driver.

Furthermore, the support rod is hollow, one end of the support rod is fixedly connected with the workbench, and the other end of the support rod is communicated with the pneumatic box.

The abrasive layer pre-pressing forming device for the resin diamond grinding wheel provided in the embodiment of the application at least has the following technical effects or advantages:

1. compared with the prior art, the method adopts manual pressing and widens and heightens the edge of the grinding wheel by increasing the height of the forming die to solve the problems of the wear resistance and the service life of the grinding wheel. The prepressing forming device is provided with the prepressing mechanism to be matched with the forming die to prepress powder, the powder is put into the forming cavity while the powder is put into the forming cavity, and the prepressing piece is controlled by the driver to descend to prepress the powder, so that gas among the powder can be fully discharged, the density of the grinding wheel is improved, and the service life of the grinding wheel is prolonged by 8 hours; the heavy cost and labor force brought by increasing the height of the forming die in the prior art are avoided, and compared with the forming die in the prior art, the height of the forming die is reduced by more than 20mm, and the weight is reduced by more than 12 kg; and the problems of large grinding wheel resistance, high material cost and the like caused by widening and heightening the cutting edge of the grinding wheel.

2. The prepressing part is connected with the driver through the connecting rod mechanism, and a plurality of vertical connecting rods of the connecting rod mechanism are connected along the circumferential direction of the prepressing part, so that the driver can keep better balance when controlling the prepressing part to descend and press in the forming cavity, a grinding wheel blank body which is prepressed is smoother, and gas among powder materials is more fully discharged.

3. Through set up the setting element that is used for injecing forming die mounted position on the workstation to when making prepressing piece and forming die cooperate the pre-compaction powder, guarantee that forming die can not slide at will, and avoid pressing because of the pre-compaction piece that forming die slided and brought is pressed partially or can't press the problem in the die cavity.

Drawings

FIG. 1 is a perspective view of a pre-press forming device in an embodiment of the present application;

FIG. 2 is a schematic structural view of a prepressing mechanism, a forming mold showing an internal structure, and a prepressing element pressed in a forming cavity in the embodiment of the present application;

FIG. 3 is a schematic view of a formed wheel produced by machining in the examples of the present application;

fig. 4 is a schematic view of the production of a grinding wheel a processed by a hot pressing mold after increasing the height of the forming mold and performing pre-pressing and pressure maintaining manually, and a schematic view of the production of a grinding wheel B processed by a hot pressing mold after pre-pressing and pressure maintaining by a pre-pressing mechanism in the embodiment of the present application.

In the figure:

10. a pre-pressing mechanism; 101. a driver; 102. pre-pressing the piece; 1021. pre-pressing holes; 103. a link mechanism; 1031. a link plate; 1032. a vertical connecting rod; 104. a pneumatic box;

20. forming a mold; 201. a mold body; 202. forming a core; 203. a molding cavity;

30. a work table; 301. an operation surface; 302. supporting legs;

40. a positioning member;

50. a support bar;

60. and a control box.

Detailed Description

For better understanding of the present invention, reference will now be made in detail to the present invention with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 4, an abrasive layer pre-pressing forming device for a resin diamond grinding wheel is provided, which is mainly used for pre-pressing and pressure maintaining before powder is hot-pressed into a grinding wheel, and comprises a pre-pressing mechanism 10 and a forming mold 20. The pre-pressing mechanism 10 has a driver 101 and a pre-pressing member 102, and the driver 101 used in the embodiment of the present application may be a motor or an air cylinder, so when the driver 101 is a motor, an output shaft of the motor is connected to the pre-pressing member 102, and when the driver 101 is an air cylinder, an output rod of the air cylinder is connected to the pre-pressing member 102. The actuator 101 is used to control the raising and lowering of the pre-press 102. The prepressing element 102 is annular, and a circular prepressing hole 1021 is formed in the middle of the prepressing element 102.

The forming die 20 is arranged below the pre-pressing piece 102, and the forming die 20 is provided with a die body 201, a forming core 202 and a forming cavity 203. The mold body 201 and the molding core 202 are both substantially cylindrical, the molding core 202 is disposed in the middle of the mold body 201, the lower end of the molding core 202 and the mold body 201 are integrally molded, a gap is provided between the molding core 202 and the mold body 201, the gap serves as a molding cavity 203 for containing powder, and the powder is a raw material to be pre-pressed and molded into a grinding wheel.

According to the shape of the forming core 202, the forming cavity 203 formed between the forming core 202 and the die body 201 is also annular, the annular forming cavity 203 surrounds the periphery of the forming core 202, so that the prepressing element 102 is matched with the forming cavity 203, and the prepressing hole 1021 in the middle of the prepressing element 102 is also matched with the forming core 202. Therefore, when the driver 101 controls the pre-pressing member 102 to press down in the molding cavity 203, the pre-pressing hole 1021 is just fit over the molding core 202.

In practical application, the powder is put into the molding cavity 203, the driver 101 is started to control the prepressing piece 102 to descend for prepressing and pressure maintaining once, then the powder is put into the molding cavity 203 for once, the driver 101 controls the prepressing piece 102 to descend for prepressing and pressure maintaining once again, usually, only two times of prepressing and pressure maintaining are needed, and therefore the powder in the molding cavity 203 is prepressed into the grinding wheel with the set shape.

The abrasive layer pre-pressing forming device for the resin diamond grinding wheel provided by the embodiment of the application at least has the following technical effects or advantages:

compared with the prior art, the method has the advantages that the height of the forming die 20 is increased, manual pressing is used, and the edge of the grinding wheel is widened and heightened to solve the problems of abrasion resistance and service life of the grinding wheel. The prepressing forming device provided by the embodiment of the application is provided with the prepressing mechanism 10 to be matched with the forming die 20 to prepress powder, the powder is prepressed in a mode of putting the powder into the forming cavity 203 and controlling the prepressing piece 102 to descend through the driver 101, gas among the powder can be fully discharged, the density and the service life of the grinding wheel are improved, and compared with the grinding wheel processed and produced in the prior art, the grinding wheel processed and produced in the embodiment of the application has the advantage that the average service life is 8 hours; the increased cost and the increased labor force caused by the increase of the height of the mold in the past are also avoided, and compared with the forming mold 20 in the past, the height of the forming mold 20 in the embodiment of the application is reduced by more than 20mm, and the weight is reduced by more than 12 kg; and the problems of large grinding wheel resistance, high material cost and the like caused by widening and heightening the cutting edge of the grinding wheel.

The ratio of the forming mold 20 used for the resin diamond-impregnated wheel a produced by conventional machining to the forming mold 20 used for the resin diamond-impregnated wheel B produced by machining according to the example of the present application is shown in table 1.

Table 1

As shown in fig. 4, the grinding wheel a is a schematic view of the manufacturing process in which the height of the forming mold 20 is increased, and after manual pre-pressing and pressure maintaining, hot-pressing and curing are performed; the grinding wheel B is processed and produced schematically by hot pressing and curing after being pre-pressed and pressure-maintained by the pre-pressing mechanism 10 according to the embodiment of the present application.

Specifically, resin diamond-impregnated wheel A and resin diamond-impregnated wheel B all put the same production line of certain brand ceramic factory and test, and this polishing line equipment configuration and operating mode are: the equipment is provided with 12 pairs of grinding heads, the thickness of 10.5mm is 800x800, and the glazed green brick is fully polished, and the brick consumption is 6.5mm.

In a No. 1-5 comparison test, when the grinding wheel B uses a prepressing mechanism to perform prepressing and pressure maintaining, air is compressed, a part of air among powder is discharged, the powder is further subjected to hot pressing when entering a hot pressing solidification stage, and the air existing among the powder is further pressed and discharged, so that the air among the powder is discharged more cleanly;

and the grinding wheel A adopts and increases the height of the forming die 20, carry on the precompression and pressurize once with the manual operation mode, can only exhaust while hot pressing is solidified, namely heat while pressurizing, because of resin thermosetting, if the gas has not been exhausted after two minutes, it is difficult to exhaust behind, because the thermosetting resin is shaped after two minutes, the shape is fixed, the gas forms the honeycomb easily, can't exhaust the gas.

The result shows that the pre-pressed and pressure-maintained resin diamond grinding wheel B is subjected to production scheduling before hot-pressing and curing, so that the hot-pressing and curing production scheduling is more complete, the density of the resin diamond grinding wheel B product is improved, the service life of the product is prolonged in the using process, and the cost performance of the product is increased, as shown in table 2.

Table 2

Number 1 position

Number 2 position

No. 3 position

Number 4 position

Number 5 position

Average service life

Grinding wheel A

55 hours

52 hours

50 hours

63 hours (h)

68 hours

57.6 hours

Grinding wheel B

65 hours

60 hours

70 hours

76 hours

66.2 hours

As shown in fig. 1, an annular pre-pressing member 102 of the embodiment of the present application is horizontally arranged, a link mechanism 103 is connected to an upper surface of the pre-pressing member 102, the link mechanism 103 is vertically arranged, and a lower end of the link mechanism 103 is connected to a surface of the pre-pressing member 102. The drive 101 then drives/connects the upper end of the linkage 103 via the output shaft or output lever, whereby the work of connecting the drive 101 to the pre-stressing member 102 via the linkage 103 is completed. When the driver 101 is started, the driver 101 controls the pre-pressing piece 102 to descend to press the powder in the molding cavity 203, or controls the pre-pressing piece 102 to ascend so as to facilitate the user to put the powder in the molding cavity 203.

As shown in fig. 2, the link mechanism 103 is further described, the link mechanism 103 includes a link plate 1031 and vertical links 1032, wherein the vertical links 1032 are provided with a plurality of vertical links 1032, the plurality of vertical links 1032 are arranged in parallel and circumferentially along the prepressing member 102, so that the lower ends of the plurality of vertical links 1032 are connected to the circumferential direction of the upper surface of the prepressing member 102, and four vertical links 1032 are provided in the embodiment of the present invention. Since the link plate 1031 is arranged horizontally, the upper ends of the four vertical links 1032 are connected to the lower surface of the link plate 1031, and the four vertical links are connected to the link plate 1031, so that the link plate 1031 can maintain a good horizontal state, and the upper surface of the link plate 1031 is connected to the output shaft or the output lever of the driver 101. Therefore, the output shaft or output rod of the driver 101 drives the link mechanism 103 consisting of the link plate 1031 and the vertical link 1032 to drive the pre-pressing member 102 to perform the actions of descending pre-pressing and ascending.

In this way, the prepressing piece 102 is connected with the driver 101 through the link mechanism 103, and a plurality of vertical connecting pieces of the link mechanism 103 are connected along the circumferential direction of the prepressing piece 102, so that the driver 101 can keep better balance when controlling the prepressing piece 102 to descend and press in the forming cavity 203, the prepressed grinding wheel blank is more flat, and the gas among the powder is more fully discharged.

As shown in fig. 1, the prepressing forming apparatus in the embodiment of the present application further includes a table 30, the table 30 is composed of an operation surface 301 and supporting legs 302 for supporting the operation surface 301, and in practical applications, the prepressing mechanism 10 and the forming die 20 are mounted on the operation surface 301 of the table 30. Specifically, the prepressing mechanism 10 is fixedly mounted on the operation surface 301 through the vertically arranged support rod 50, and the mold body 201 of the forming mold 20 is movably mounted on the operation surface 301, so that the forming cavity 203 and the forming core 202 are located right below the prepressing element 102 of the prepressing mechanism 10. Therefore, the prepressing piece 102 can be accurately pressed in the forming cavity 203 when pressed downwards, and the powder is prepressed and formed into a grinding wheel blank.

In the embodiment of the present application, the workbench 30 is further provided with a positioning element 40 for limiting the installation position of the forming mold 20, and since the mold body 201 of the forming mold 20 is cylindrical, the positioning is set to be U-shaped, and only the mold body 201 needs to be installed in the U-shaped opening of the positioning element 40, so that the mold body 201 can be limited not to slide randomly.

Thus, the positioning member 40 for limiting the installation position of the forming mold 20 is arranged on the workbench 30, so that when the prepressing piece 102 is matched with the forming mold 20 for prepressing powder, the forming mold 20 is ensured not to slide randomly, and the problem that the prepressing piece 102 is pressed to be deviated or cannot be pressed in the forming cavity 203 due to the sliding of the forming mold 20 is avoided.

In order to facilitate the control of the pre-pressing and pressure maintaining actions of the pre-pressing member 102, a control box 60 is mounted on the station side of the worktable 30, the control box 60 is equipped with a start button for controlling the power-on operation of the driver 101 and a stop button for stopping the power-off of the driver 101, so that the start button and the stop button on the control box 60 are both electrically connected with the driver 101.

As shown in fig. 2, in order to more conveniently mount the components of the prepressing mechanism 10 on the worktable 30, the prepressing forming apparatus of the embodiment of the present application is further provided with a pneumatic box 104. The driver 101 is installed in the pneumatic box 104, the transverse link of the link mechanism 103 is completely horizontally installed in the pneumatic box 104 and connected with the output shaft or output rod of the driver 101, the upper end of the vertical link 1032 penetrates into the pneumatic box 104 from a bottom hole preset at the bottom of the pneumatic box 104 and is fixedly connected with the transverse link, and the lower end of the vertical link 1032 is exposed outside the pneumatic box 104 and is fixedly connected with the pre-pressing piece 102.

The support rod 50 is vertically installed on the operation surface 301 of the work table 30, and the support rod 50 is hollow so that the support rod 50 communicates with the inside of the air box 104. The circuit of the control box 60 installed on the work table 30 is arranged in the support rod 50 and penetrates into the pneumatic box 104 along the support rod 50 to be connected with the driver 101, thereby completing the circuit rational layout of the pre-press forming device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An abrasive layer pre-pressing molding device for a resin diamond-impregnated wheel, comprising:

2. The abrasive layer pre-press forming device for the resin diamond grinding wheel according to claim 1, wherein the pre-press member is connected with a link mechanism, and the driver drives/connects the link mechanism through a force output shaft or a force output rod to drive the pre-press member.

3. The abrasive layer prepressing molding device for resin diamond-impregnated grinding wheels according to claim 2, wherein the link mechanism includes a link plate and a plurality of vertical links, the vertical links being provided with a plurality of pieces, the plurality of vertical links being arranged circumferentially along the prepressing member;

the lower end of the vertical connecting rod is connected with the pre-pressing piece, the upper end of the vertical connecting rod is connected with the connecting rod plate, and the connecting rod plate is connected with the output shaft or the output rod of the driver.

4. The abrasive material layer pre-pressing forming device for the resin diamond grinding wheel according to any one of claims 2 to 3, further comprising a workbench, wherein the pre-pressing mechanism is fixedly mounted on the workbench through a support rod, and the forming die is movably mounted on the workbench and is located right below the pre-pressing mechanism.

5. The abrasive layer pre-pressing molding apparatus for a resin diamond-impregnated wheel according to claim 4, wherein said table is further provided with a positioning member for defining a mounting position of said molding die.

6. The abrasive layer pre-pressing forming device for the resin diamond-impregnated grinding wheel according to claim 4, wherein a control box is further provided on the work table, and the control box is electrically connected to the driver.

7. The abrasive layer pre-pressing forming device for the resin diamond grinding wheel according to claim 4, wherein the driver is installed in a pneumatic box, and the link mechanism penetrates into the pneumatic box to be connected with a force output shaft or a force output rod of the driver.

8. The pre-pressing forming device for the grinding material layer of the resin diamond grinding wheel according to claim 7, wherein the supporting rod is hollow inside, one end of the supporting rod is fixedly connected with the workbench, and the other end of the supporting rod is communicated with the pneumatic box.