CN221136278U - Rolling forming equipment for ceramic grains - Google Patents

Abstract

The utility model discloses a roll forming device for ceramic grains, which comprises an upper press roll assembly; the upper press roll assembly and the lower press roll assembly are distributed oppositely, an embossing channel is formed between the upper press roll assembly and the lower press roll assembly at intervals, a rolling grain piece with elastic performance is wound on an upper steel belt of the upper press roll assembly and/or a lower steel belt of the lower press roll assembly, and embossing bulges are arranged on the surface of the rolling grain piece; the rolling grain piece is used for carrying out rolling forming on ceramic powder material along the conveying direction through the ceramic slab with textures of the embossing channel, and solves the problem that the existing rolling forming device cannot form grains on the surface of a green brick.

Description

Rolling forming equipment for ceramic grains

Technical Field

The utility model relates to the field of roller presses, in particular to a roller forming device for ceramic grains.

Background

The roll forming process refers to a process for forming various complex parts by adopting the principle of roll extrusion by means of the plastic movement characteristic of materials. When the roller press works, the movable roller is driven by the motor to rotate, and loose materials are conveyed between the gaps of the two rollers and crushed and extruded to form a compact material bed. Under the condition of material layer crushing, the energy consumption of crushing by pure pressure is much smaller than that of crushing by pure shearing and impact. The roller press utilizes pure pressure in the material layer crushing process, thereby achieving the purposes of improving efficiency and saving energy consumption.

A roll forming apparatus and method thereof as disclosed in applicant's publication No. CN115922879a, 4/7 of 2023, which comprises a conveying assembly for conveying powder in a conveying direction; the pressing assembly comprises a first forming roller and a second forming roller, the first forming roller and the second forming roller are distributed at intervals in the vertical direction, and a compaction space is formed by the first forming roller and the second forming roller; the compaction space is used for receiving the powder on the conveying assembly and compacting the powder to form a green brick; and the limiting plates are used for being abutted with the green bricks so as to limit the surface expansion of the green bricks.

This current roll-in fashioned device can prevent that the adobe upper surface from expanding to let adobe internal stress release gradually, reduce the condition emergence that the adobe appears the crackle, thereby guaranteed the quality of adobe. The surface of the compacting belt is smooth, and grains cannot be formed on the surface of the green brick, so that the requirement that abundant decorative grains are formed on the surface of the ceramic slab cannot be met. Meanwhile, the surface of the ceramic plate blank lacks lines, so that the adhesive force of the ceramic plate blank during paving is weakened.

Disclosure of utility model

In order to overcome at least one of the defects in the prior art, the utility model provides rolling forming equipment for ceramic grains, which solves the problem that grains cannot be formed on the surface of a green brick by the existing rolling forming device.

The utility model adopts the technical proposal for solving the problems that:

a roll forming apparatus for ceramic grain comprising:

an upper press roll assembly;

the upper press roll assembly and the lower press roll assembly are distributed relatively, the upper press roll assembly and the lower press roll assembly are spaced to form an embossing channel, the upper steel belt of the upper press roll assembly and/or the lower steel belt of the lower press roll assembly is wound with a rolling grain piece with elastic performance, and embossing bulges are arranged on the surface of the rolling grain piece;

the rolling grain piece is used for rolling and forming the ceramic slab with textures in the process that the ceramic powder passes through the embossing channel along the conveying direction.

In some embodiments of the utility model, the circumference of the rolled grain is 0% to 10% shorter than the circumference of the upper steel strip, or the circumference of the rolled grain is 0% to 10% shorter than the circumference of the lower steel strip.

In some embodiments of the utility model, the upper press roll assembly comprises an upper forming press roll and an upper power roll assembly, wherein the upper forming press roll is matched with the upper power roll assembly to tension the upper steel belt;

The lower press roll assembly comprises a lower forming press roll and a lower power roll assembly, the lower forming press roll is matched with the lower power roll assembly to tension the lower steel belt, and the upper forming press roll and the lower forming press roll are oppositely arranged.

In some embodiments of the present utility model, the upper power roller assembly includes a first driving roller, a first driven roller and a first tensioning cylinder, the upper molding press roller is disposed between the first driving roller and the first driven roller, and a movable telescopic end of the first tensioning cylinder is connected to the first driven roller;

the lower power roller assembly comprises a second driving roller, a second driven roller and a second tensioning cylinder, the lower forming press roller is arranged between the second driving roller and the second driven roller, and the movable telescopic end of the second tensioning cylinder is connected with the second driven roller.

In some embodiments of the present utility model, the rolling texturing member is provided with a lateral restraint extending along a length direction of the rolling texturing member, and the lateral restraint has elastic properties such that the lateral restraint is compressively deformed when passing through the embossing channel.

In some embodiments of the present utility model, the lateral constraint members are disposed on two opposite sides of the conveying direction of the rolling grain member, one of the rolling grain member and the lateral constraint member is provided with a positioning protrusion, the other one of the rolling grain member and the lateral constraint member is provided with an adjusting slot for clamping the positioning protrusion, and the positioning protrusion cooperates with the adjusting slot to adjust the distance between the two lateral constraint members.

In some embodiments of the utility model, the rolled grain is integrally formed with the lateral restraint.

In some embodiments of the present utility model, the roll forming apparatus for ceramic grain further includes a cleaning device for cleaning the residual ceramic powder on the surface of the rolled grain piece.

In some embodiments of the utility model, the upper steel strip between the upper forming press roll and the first driven roll is formed as a feed guide section, and the lower steel strip between the lower forming press roll and the second driven roll is formed as a feed transport section, the feed guide section being disposed oblique to the feed transport section.

The utility model also discloses a roll forming method applied to the roll forming equipment, which comprises the following steps:

Step1, quantitatively conveying ceramic powder to the lower pressing roll assembly;

Step2, conveying the ceramic powder material to the embossing channel along the conveying direction;

Step3, compacting and embossing the ceramic powder into a ceramic slab with textures under the combined action of the upper pressing roller assembly, the lower pressing roller assembly and the rolling texture piece.

In summary, the roll forming device for ceramic grains provided by the utility model has the following technical effects:

The rolling grain piece with elastic performance is wound on the upper steel belt of the upper compression roller assembly and/or the lower steel belt of the lower compression roller assembly, so that the original structural strength of the original upper steel belt and the original lower steel belt can be maintained, and the quality of the formed ceramic slab is effectively ensured. Meanwhile, the rolling grain piece is utilized to form grains on the ceramic plate blank, so that the problem that grains cannot be formed on the surface of a green brick (namely the ceramic plate blank in the utility model) by the existing rolling forming device is solved, the attractiveness of the ceramic plate blank is improved, and the adhesive force of the ceramic plate blank in paving is also improved. In addition, the assembly of roll-in line spare is also very convenient, is favorable to roll-in former's quick assembly disassembly and production.

Drawings

FIG. 1 is a schematic rolling diagram of a roll forming apparatus for ceramic grain according to the present utility model;

FIG. 2 is a first block diagram of a roll forming apparatus for ceramic grain according to the present utility model;

FIG. 3 is an enlarged partial schematic view of FIG. 2A;

FIG. 4 is an enlarged schematic cross-sectional view at B in FIG. 2;

fig. 5 is a second structural view of a roll forming apparatus for ceramic grain according to the present utility model.

Icon: 1-upper press roll assembly, 11-upper steel belt, 12-upper forming press roll, 13-first driving roll, 14-first driven roll, 15-first tensioning cylinder, 2-lower press roll assembly, 21-lower steel belt, 22-lower forming press roll, 23-second driving roll, 24-second driven roll, 25-second tensioning cylinder, 3-embossing channel, 41-rolling grain piece, 5-ceramic powder, 6-lateral restraint piece and 7-cleaning device.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

First embodiment

The roll forming ceramic tile/ceramic slab still belongs to a new forming method in the field of ceramic tile/ceramic slab forming at present. The test detection and analysis in the process of forming the ceramic bricks/ceramic plates by double-roll forming show that parameters such as the diameter, the rotating speed, the structural strength, the rolling reduction, the plasticity of the ceramic powder and the like of the pressing roller in the rolling forming process have larger or smaller influence on the forming quality of ceramic green bricks. The method comprises the following steps of affecting the planeness of the surface of the formed plate blank, namely, whether the surface has obvious concave-convex ripple phenomenon or not; the influence on the quality of the ceramic powder after forming, namely whether the ceramic powder is deformed or cracked after rolling.

Therefore, the utility model aims at improving the existing roll forming device, so that the ceramic powder can generate texture lines meeting the requirements on the surface of the formed ceramic bricks/ceramic slabs under the condition that parameters such as the diameter, the rotating speed, the structural strength, the rolling reduction, the plasticity of the ceramic powder and the like of the pressing roll are not changed or fine-tuned in roll forming, thus the generation of ceramic brick/ceramic slab wastes is reduced to the greatest extent, the quality of ceramic brick/ceramic slab products is effectively ensured, and the process production cost of the roll forming ceramic bricks/ceramic slabs (hereinafter called ceramic slabs) is also reduced.

Specifically referring to fig. 1, the utility model discloses a roll forming device for ceramic grains, which comprises an upper press roll assembly 1 and a lower press roll assembly 2, wherein the upper press roll assembly 1 and the lower press roll assembly 2 are distributed oppositely, and an embossing channel 3 is formed between the upper press roll assembly 1 and the lower press roll assembly 2 at intervals.

At this time, in the process that the ceramic powder 5 passes through the embossing channel 3, the upper steel belt 11 of the upper pressing roller assembly 1 and the lower steel belt 21 of the lower pressing roller assembly 2 are matched to compact and uniformly press the ceramic powder 5, so as to form a ceramic plate blank with better surface flatness, smaller internal integral residual stress and uniformity.

As a core solution of this example, for forming a ceramic slab with texture on the surface of a smooth and flat ceramic slab, please specifically combine fig. 2 and 3 to show, the upper steel belt 11 of the upper press roller assembly 1 is wound with a rolling texture piece 41 with elastic property, that is, when the rolling texture piece 41 is sleeved on the upper steel belt 11, the rolling texture piece 41 will extend along the length direction of the upper steel belt 11, and the rolling texture piece 41 is formed into a closed-loop structure in an end-to-end manner, and the surface of the rolling texture piece 41 is provided with embossing protrusions, so, the rolling forming device can continuously roll the ceramic slab with texture by using the embossing protrusions of the rolling texture piece 41 in the process of passing through the embossing channel 3 along the conveying direction in the continuous operation process of the rolling forming device.

In this embodiment, the rolled grain piece 41 is only required to be assembled on the upper steel belt 11 of the upper press roll assembly 1, and the upper steel belt 11 is not required to be processed or the upper press roll assembly 1 and the lower press roll assembly 2 are not required to be improved, so that the structural strength of the upper press roll assembly 1 and the lower press roll assembly 2 is ensured, and the technological parameters of the rolled ceramic slab are not required to be adjusted, thereby reducing the research, development and production costs to the greatest extent.

When the texture of the ceramic slab is required to be changed according to design or requirements, the rolling grain piece 41 is only required to be detached from the upper steel belt 11 of the upper press roller assembly 1, and then another rolling grain piece 41 is replaced, so that the ceramic slab is convenient to assemble and replace, the efficient production of the ceramic slab is also facilitated, and the difficulty of production and manufacture is reduced.

It should be noted that, in addition to the above-mentioned assembly of the rolling grain 41 to the upper steel strip 11 of the upper press roll assembly 1, the rolling grain 41 may be assembled to the lower steel strip 21 of the lower press roll assembly 2, or according to fig. 5, both the upper steel strip 11 of the upper press roll assembly 1 and the lower steel strip 21 of the lower press roll assembly 2 are assembled with the rolling grain 41.

In the above description, referring to fig. 2 and 5, the upper press roll assembly 1 includes an upper forming press roll 12 and an upper power roll assembly, and the upper forming press roll 12 cooperates with the upper power roll assembly to tension the upper steel strip 11, that is, the upper steel strip 11 is pressed against the upper forming press roll 12 and the upper power roll assembly, so that the upper steel strip 11 is kept in a tensioned state during the rolling process.

Likewise, the lower press roll assembly 2 includes a lower forming press roll 22 and a lower power roll assembly, the lower forming press roll 22 cooperates with the lower power roll assembly to tension the lower steel strip 21, that is, the lower steel strip 21 is pressed against the lower forming press roll 22 and the lower power roll assembly, so that the lower steel strip 21 is kept in a tensioned state in the rolling process, when the rolling grain piece 41 is assembled on the upper steel strip 11 of the upper press roll assembly 1, the rolling grain piece 41 is kept in uniform contact with the upper steel strip 11, the upper steel strip 11 can stably drive the rolling grain piece 41 to move, thereby ensuring that the rolling grain piece 41 can uniformly extrude the ceramic slab, and meanwhile, when the ceramic slab subjected to rolling forming is conveyed in the embossing channel 3 to translate, the rolling grain piece 41 can also uniformly and stably press-contact with the ceramic slab, so that the problem that grains are not clear due to small deformation recovery of the ceramic slab with certain plasticity is avoided after rolling forming.

When the rolling grain piece 41 is assembled on the lower steel belt 21 of the lower power roller assembly, the rolling grain piece 41 and the lower steel belt 21 are kept in uniform abutting contact, the lower steel belt 21 can stably drive the rolling grain piece 41 to move, ceramic powder 5 can be stably conveyed, the rolling grain piece 41 is effectively ensured to uniformly extrude a ceramic plate blank, meanwhile, when the ceramic plate blank subjected to rolling forming is conveyed and translated in the embossing channel 3, the rolling grain piece 41 can also uniformly and stably extrude and contact the ceramic plate blank, and the problem that the grains are unclear due to the fact that small deformation recovery occurs after the ceramic plate blank with certain plasticity is prevented from being rolled and formed.

Further, the upper molding press roll 12 is disposed opposite to the lower molding press roll 22, and the ceramic powder 5 is pressed between the ceramic powder 5 and the rolling grain 41 while passing between the upper molding press roll 12 and the lower molding press roll 22. The ceramic powder 5 can be compacted into a ceramic plate blank, and clear lines can be embossed on the ceramic plate blank.

As a preferred mode of this embodiment, referring specifically to fig. 2 and 5, the upper power roller assembly includes a first driving roller 13, a first driven roller 14, and a first tensioning cylinder 15, where the upper forming press roller 12 is disposed between the first driving roller 13 and the first driven roller 14, and the movable telescopic end of the first tensioning cylinder 15 is connected to the first driven roller 14, and the first tensioning cylinder 15 is optionally an air cylinder, optionally a hydraulic cylinder, or optionally an electric cylinder.

Thus, it is assumed that the rolled grain 41 is fitted to the upper steel strip 11. When the upper steel belt 11 and the rolling grain piece 41 are disassembled, the first tensioning cylinder 15 can be controlled to be in a compressed state, so that the upper steel belt 11 and the upper power roller assembly and the upper steel belt 11 and the rolling grain piece 41 are in a loose state, the upper steel belt 11 and the rolling grain piece 41 are conveniently assembled to the upper power roller assembly, or the upper steel belt 11 and the rolling grain piece 41 are conveniently disassembled from the upper power roller assembly. When the upper steel belt 11 and the rolling grain 41 are placed on the upper power roller assembly, the first tensioning cylinder 15 can be controlled to be in an extended state until the upper steel belt 11 and the rolling grain 41 are in a tensioned state.

Therefore, under the action of the first tensioning cylinder 15, the automatic purpose of dismounting the upper steel belt 11 and the rolling grain piece 41 is achieved, and convenience of the upper steel belt 11 and the rolling grain piece 41 is achieved. Simultaneously, make last steel band 11 be in the best tensioning force to, still guarantee that roll-in line spare 41 is balanced, firm butt in last steel band 11, avoid going up steel band 11 and roll-in line spare 41 and take place the phenomenon that skids in the roll-in process, thereby effectively guarantee the quality of the ceramic slab finished product that has the line.

In addition, the lower power roller assembly comprises a second driving roller 23, a second driven roller 24 and a second tensioning cylinder 25, the lower molding press roller 22 is arranged between the second driving roller 23 and the second driven roller 24, the movable telescopic end of the second tensioning cylinder 25 is connected with the second driven roller 24, and the second tensioning cylinder 25 can be an air cylinder, a hydraulic cylinder or an electric cylinder.

Thus, it is assumed that the rolled grain 41 is fitted to the lower steel strip 21. When the lower steel belt 21 and the rolling grain piece 41 are disassembled, the second tensioning cylinder 25 can be controlled to be in a compressed state, so that the lower steel belt 21 and the lower power roller assembly and the lower steel belt 21 and the rolling grain piece 41 are in a loose state, and the lower steel belt 21 and the rolling grain piece 41 are conveniently assembled to the lower power roller assembly or the lower steel belt 21 and the rolling grain piece 41 are conveniently disassembled from the lower power roller assembly. When the lower steel strip 21 and the rolling grain 41 are placed on the lower power roller assembly, the second tensioning cylinder 25 may be controlled to be in an extended state until the lower steel strip 21 and the rolling grain 41 are in a tensioned state.

Therefore, under the action of the second tensioning cylinder 25, not only the purpose of automatically disassembling the lower steel belt 21 and the rolling grain piece 41 is achieved, but also the convenience of the lower steel belt 21 and the rolling grain piece 41 is achieved. Simultaneously, make lower steel band 21 be in the best tensioning force to, still guarantee that roll-in line spare 41 is balanced, firm butt in lower steel band 21, avoid lower steel band 21 and roll-in line spare 41 to take place the phenomenon that skids in the roll-in process, thereby effectively guarantee the quality of the ceramic slab finished product that has the line.

Of course, in addition to ensuring that the rolled grain piece 41 does not slip by the first tensioning cylinder 15 and the second tensioning cylinder 25, the surfaces of the upper steel strip 11 and the lower steel strip 21 may be formed with an anti-slip layer, such as a paint layer or a glue layer. In addition, the inventor also provides another preferable scheme:

When the rolling grain piece 41 is assembled on the upper steel belt 11, the circumference of the rolling grain piece 41 is 0% -10% shorter than that of the upper steel belt 11; or alternatively

When the rolling grain 41 is assembled to the lower steel strip 21, the circumference of the rolling grain 41 is 0% to 10% shorter than the circumference of the lower steel strip 21.

Thus, when the circumference of the rolling grain piece 41 is equal to the circumference of the upper steel belt 11 or the circumference of the lower steel belt 21, the rolling grain piece 41 is wound on the outer side of the upper steel belt 11 and/or the lower steel belt 21, and when the upper steel belt 11 and/or the lower steel belt 21 are in a tensioning state, the rolling grain piece 41 is also in a stretching deformation state, and at the moment, the rolling grain piece 41 is abutted against the upper steel belt 11 and/or the lower steel belt 21, that is, the first tensioning cylinder 15 and the second tensioning cylinder 25 are matched, so that the friction force between the rolling grain piece 41 and the upper steel belt 11 and the friction force between the rolling grain piece 41 and the lower steel belt 21 between the upper steel belt 11 are effectively increased, and the phenomenon that the upper steel belt 11 and/or the lower steel belt 21 and the rolling grain piece 41 slip in the rolling process is effectively avoided.

In addition, when the rolling grain piece 41 is assembled on the upper steel belt 11, the circumference of the rolling grain piece 41 is 0% -10% shorter than that of the upper steel belt 11, and the extrusion force between the upper steel belt 11 and the rolling grain piece 41 can be effectively increased in the interval of 0% -10%, so that the friction force between the upper steel belt 11 and the rolling grain piece 41 is increased, and the phenomenon that the upper steel belt 11 and the rolling grain piece 41 slip in the rolling process can be effectively avoided. When the circumference of the rolling grain piece 41 is longer than that of the upper steel belt 11, the friction force between the upper steel belt 11 and the rolling grain piece 41 is insufficient, and the slipping phenomenon easily occurs in the rolling process, so that the grain effect is affected. When the circumference of the rolled grain 41 is more than 10% shorter than the circumference of the upper steel strip 11, the rolled grain 41 is easily broken or cracked due to excessive stretching of the rolled grain 41 when the upper steel strip 11 is in a tensioned state.

Similarly, when the rolling grain piece 41 is assembled on the lower steel belt 21, the circumference of the rolling grain piece 41 is 0% -10% shorter than the circumference of the lower steel belt 21, and in the interval of 0% -10%, the friction force between the lower steel belt 21 and the rolling grain piece 41 can be effectively increased, and the phenomenon that the lower steel belt 21 and the rolling grain piece 41 slip in the rolling process can be effectively avoided. When the circumference of the rolling grain piece 41 is longer than that of the lower steel belt 21, the friction force between the lower steel belt 21 and the rolling grain piece 41 is insufficient, and the slipping phenomenon easily occurs in the rolling process, so that the grain effect is affected. When the circumference of the rolled grain 41 exceeds 10% of the circumference of the lower steel strip 21, the rolled grain 41 is easily stretched excessively to cause cracking or breaking when the lower steel strip 21 is in a tensioned state.

As a preferred mode of this embodiment, referring to fig. 1, 2 and 5, the roll forming apparatus further includes a cleaning device 7, where the cleaning device 7 is used for cleaning the ceramic powder 5 remained on the surface of the rolled grain piece 41. Specifically, the cleaning device 7 may be a cleaning brush assembly, and the cleaning brush assembly is fixed, so that the cleaning brush assembly and the rolling grain piece 41 can be moved relatively, thereby achieving the purpose of cleaning the surface of the rolling grain piece 41. The cleaning device 7 can also be a power motor equipped with a cleaning brush, and the cleaning brush is driven to rotate by the power motor to clean the surface of the rolling grain piece 41.

It should be noted that the number of the cleaning devices 7 may be one, and of course, the number of the cleaning devices 7 may be two, three, four, five, or the like. The installation position of the cleaning device 7 is not limited to the position shown in the drawings, and may be adjusted according to the structure of the roll forming apparatus and the structure of the cleaning device 7.

As a preferred mode of this embodiment, referring specifically to fig. 1, 2 and 5, the upper steel belt 11 between the upper molding press roller 12 and the first driven roller 14 is formed as a feed guide section, and the lower steel belt 21 between the lower molding press roller 22 and the second driven roller 24 is formed as a feed conveying section, the feed guide section being disposed obliquely to the feed conveying section.

So, when ceramic powder 5 carries the in-process of carrying down to knurling passageway 3 under the drive of compression roller subassembly 2, because the feeding guide section is the slope setting, form into the contained angle between feeding guide section and the feeding transport section promptly, clearance between feeding guide section and the feeding transport section tightens up gradually, highly reduce gradually, then when ceramic powder 5 gets into the clearance between feeding guide section and the feeding transport section, receive the extrusion of feeding guide section, ceramic powder 5 on upper strata is extruded into lower floor's ceramic powder 5 gradually, and partial gas between the ceramic powder 5 is side by side, then make ceramic powder 5 by extruded distance longer, the fall is littleer. At the same time, the rolled grain piece 41 will contact and initially extrude the ceramic powder 5, and then enter the embossing channel 3, and is crushed by further extrusion of the upper molding press roll 12 and the lower molding press roll 22, so as to form a ceramic slab with grains.

Second embodiment

The rolling forming equipment for ceramic grains disclosed in the first embodiment realizes the purpose of forming embossing on a ceramic plate blank on the premise of not changing or fine-tuning the technological parameters of rolling forming the ceramic plate blank, and can flexibly and conveniently replace the rolling grain piece 41 according to the design and the requirements, thereby improving the production and manufacturing efficiency.

Since the ceramic powder 5 is scattered from the apparatus/device during transportation and during rolling, the inventors adopted a flange bar assembly in the conventional roll forming apparatus and utilized the abutment and bonding of the inclined surface on the flange bar assembly and the end face of the compacting section, thereby preventing the powder from leaking laterally. The long-term production or test process finds that when the existing flange strip assembly is attached to the compaction section, the existing flange strip assembly is static, so that the compaction belt can rub and wear with the existing flange strip assembly in the moving process, and the existing flange strip assembly and the compaction belt can vibrate in the rolling process.

The inventor has further provided a preferred way to solve the above-mentioned problems, specifically please refer to fig. 2 and 4, in which the rolling grain 41 is provided with a lateral constraint member 6, the lateral constraint member 6 extends along the length direction of the rolling grain 41, and the lateral constraint member 6 is wound around the upper surface of the rolling grain 41, so that the ceramic powder 5 is scattered from the lateral direction of the rolling grain 41 during the transportation process by using the barrier of the lateral constraint member 6, the lateral constraint member 6 is preferably configured to be two, and the two lateral constraint members 6 are oppositely arranged, so that the ceramic powder 5 is well constrained between the two lateral constraint members 6, and the ceramic powder 5 is well transported into the embossing channel 3 for compaction and embossing.

The core of this embodiment is that the lateral restraints 6 have elastic properties such that the lateral restraints 6 are compressively deformed when passing through the embossing channel 3. So, the side direction restraint 6 moves to the knurling passageway 3 along with the roll-in line piece 41, go up the laminating of last steel band 11 and side direction restraint 6 butt of compression roller subassembly 1 to go up when steel band 11 extrudees side direction restraint 6, side direction restraint 6 will produce and deform and carry out self-regulation, thereby avoid causing the destruction to side direction restraint 6, and the unexpected effect that its possesses includes as follows:

1. Because the ceramic powder is in the process of compacting and embossing through the embossing channel 3, the upper steel belt 11, the rolling grain piece 41 and the lateral restraining piece 6 are static relative to each other, the lateral restraining piece 6 and the upper steel belt 11 cannot be rubbed or worn, and the problem of vibration between the lateral restraining piece 6 and the upper steel belt 11 is avoided.

2. Under the action of the lateral restraint 6, the ceramic powder can generate lateral restraint force on the ceramic plate blank in the process of forming the ceramic plate blank, so that the ceramic plate blank has better forming quality. That is, the ceramic powder will expand toward both sides of the rolled grain 41 during the pressing of the upper and lower roll assemblies 1 and 2, and at this time, the lateral restraining member 6 will not collapse and the uncompacted powder will not scatter from the ceramic powder.

3. Since the lateral restraint 6 passes through the embossing channel 3 with the rolled grain 41, the ceramic slab is still subjected to the lateral restraint force of the lateral restraint 6 as it passes through the embossing channel 3. Thus, the lateral restraining piece 6 is matched with the rolling grain piece 41, and the ceramic plate blank is effectively shaped and stable in the embossing channel 3, so that the quality of the ceramic plate blank is further improved. At the same time, the non-compacted ceramic powder is prevented from scattering from the embossing channels 3 and contaminating the roll forming equipment.

4. The tension provided by the lower pressing roller assembly 2 is skillfully utilized, so that the lateral constraint piece 6 can be stably fixed on the rolling grain piece 41, and compared with the existing flange strip assembly, the lateral constraint piece is simpler, is convenient to produce, manufacture and assemble, and effectively reduces the production cost.

As a preferred mode of this embodiment, the rolling grain piece 41 is provided with the lateral restraint piece 6 on two opposite sides of the conveying direction, the rolling grain piece 41 is provided with the positioning protrusion, and the lateral restraint piece 6 is provided with the adjusting clamping groove of the clamping positioning protrusion, so, through the cooperation of the positioning protrusion and the adjusting clamping groove, the lateral bearing capacity of the lateral restraint piece 6 can be enhanced.

The number of the adjusting clamping grooves is multiple, the adjusting clamping grooves are arranged at intervals along the width direction of the lateral constraint piece 6, and the positioning protrusions are clamped with the adjusting clamping grooves in different manners, so that the purpose of adjusting the distance between the two lateral constraint pieces 6 through the matching of the positioning protrusions and the adjusting clamping grooves can be achieved.

It should be noted that, the positioning protrusion may be disposed on the lateral constraint member 6, and the adjusting slot is correspondingly disposed on the rolling grain member 41, so as to achieve the purpose of enhancing the lateral bearing capacity of the lateral constraint member 6.

As another preferred mode of this embodiment, the rolled grain 41 is integrally formed with the lateral restraint 6. In this way, the strength of the connection of the rolled grain 41 with the lateral constraint 6 can be ensured, so that an optimal lateral constraint force is well generated on the ceramic slab. In addition, need not additionally to assemble lateral restraint 6 to simplified the assembly process of roll-in former, and when need changing the interval between two lateral restraint 6, with roll-in line piece 41 dismantle the back assembly on accord with the roll-in line piece 41 of interval requirement between two lateral restraint 6 can, change also fairly portably, high-efficient, can effectively guarantee the efficiency of production.

Third embodiment

Based on the roll forming apparatus for ceramic grain disclosed in the first and second embodiments, the inventor also discloses a roll forming method, before the rolling process, the roll grain 41 should be assembled to the upper steel strip 11 of the upper press roll assembly 1 and/or the lower steel strip 21 of the lower press roll assembly 2, as shown in fig. 1, for example, by assembling the roll grain 41 to the lower steel strip 21 of the lower press roll assembly 2, controlling the second tensioning cylinder 25 to retract so that the lower steel strip 21 of the lower press roll assembly 2 is in a loose state, sleeving the roll grain 41 with the lower steel strip 21 of the lower press roll assembly 2 with a selected spacing specification (the spacing dimension of the two lateral constraints 6), and controlling the second tensioning cylinder 25 to push until the lower steel strip 21 is in a tensioned state, and the roll grain 41 is in contact with the lower steel strip 21. Next, the roll-in process is started, comprising the steps of:

Step1, quantitatively delivering the ceramic powder 5 to the lower press roller assembly 2, specifically, for example, a hopper can be used for quantitatively delivering, that is, the hopper is filled with the powder, the hopper is adjusted according to the thickness of the green brick, and the hopper is controlled to control the powder to fall down the rolling grain piece 41 on the lower press roller assembly 2.

Step2, conveying the ceramic powder 5 to the embossing channel 3 along the conveying direction. Specifically, the ceramic powder 5 is conveyed along with the rolling grain piece 41 toward the direction of the embossing channel 3, when the ceramic powder 5 enters the gap between the feeding guiding section and the feeding conveying section, part of the gas inside the ceramic powder 5 is discharged, and the rolling grain piece 41 contacts and primarily extrudes the ceramic powder 5.

Step3, compacting and embossing the ceramic powder 5 into a ceramic slab with textures by the combined action of the upper pressing roller assembly 1, the lower pressing roller assembly 2 and the rolling texture piece 41.

In step3, the force applied by the upper molding press roll 12 of the upper press roll assembly 1 and the lower molding press roll 22 of the lower press roll assembly 2 not only achieves the effect of crushing the extruded ceramic slab, but also causes the rolled grain piece 41 to be embossed with grains on the surface of the ceramic slab. And the ceramic slab is in the in-process of knurling passageway 3, in the cooperation of roll-in line spare 41 and side direction restraint 6, still design, stabilize the ceramic slab for inside gas and the internal stress of ceramic slab release gradually, have improved the quality of ceramic slab.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (9)

1. A roll forming apparatus for ceramic grain, comprising:

An upper press roll assembly (1);

The upper press roll assembly (1) and the lower press roll assembly (2) are distributed oppositely, the upper press roll assembly (1) and the lower press roll assembly (2) are separated to form an embossing channel (3), an upper steel belt (11) of the upper press roll assembly (1) and/or a lower steel belt (21) of the lower press roll assembly (2) are wound with a rolling grain piece (41) with elastic performance, and embossing protrusions are arranged on the surface of the rolling grain piece (41);

The rolling texture piece (41) is used for rolling and forming the ceramic slab with textures in the process that the ceramic powder (5) passes through the embossing channel (3) along the conveying direction.

2. The roll forming apparatus for ceramic grain of claim 1, wherein: the circumference of the rolling grain piece (41) is 0% -10% shorter than that of the upper steel belt (11), or the circumference of the rolling grain piece (41) is 0% -10% shorter than that of the lower steel belt (21).

3. The roll forming apparatus for ceramic grain according to claim 1 or 2, characterized in that: the upper press roll assembly (1) comprises an upper forming press roll (12) and an upper power roll assembly, and the upper forming press roll (12) is matched with the upper power roll assembly to tension the upper steel belt (11);

The lower press roll assembly (2) comprises a lower forming press roll (22) and a lower power roll assembly, the lower forming press roll (22) is matched with the lower power roll assembly to tension the lower steel belt (21), and the upper forming press roll (12) and the lower forming press roll (22) are oppositely arranged.

4. A roll forming apparatus for ceramic textures as claimed in claim 3, wherein: the upper power roller assembly comprises a first driving roller (13), a first driven roller (14) and a first tensioning cylinder (15), the upper forming press roller (12) is arranged between the first driving roller (13) and the first driven roller (14), and the movable telescopic end of the first tensioning cylinder (15) is connected with the first driven roller (14);

The lower power roller assembly comprises a second driving roller (23), a second driven roller (24) and a second tensioning cylinder (25), the lower forming press roller (22) is arranged between the second driving roller (23) and the second driven roller (24), and the movable telescopic end of the second tensioning cylinder (25) is connected with the second driven roller (24).

5. The roll forming apparatus for ceramic grain according to claim 1 or 2, characterized in that: be provided with side direction restraint (6) on roll-in line spare (41), side direction restraint (6) are along the length direction of roll-in line spare (41) extends, side direction restraint (6) possess elastic properties, make side direction restraint (6) are passed when knurling passageway (3) is pressed deformation.

6. The roll forming apparatus for ceramic grain of claim 5, wherein: the rolling grain piece (41) is in the opposite sides of the conveying direction are both provided with the lateral constraint piece (6), one of the rolling grain piece (41) and the lateral constraint piece (6) is provided with a positioning protrusion, the other one of the rolling grain piece (41) and the lateral constraint piece (6) is provided with a clamping connection adjusting clamping groove with the positioning protrusion, and the positioning protrusion is matched with the adjusting clamping groove to adjust the distance between the two lateral constraint pieces (6).

7. The roll forming apparatus for ceramic grain of claim 5, wherein: the rolling grain piece (41) and the lateral constraint piece (6) are integrally formed.

8. The roll forming apparatus for ceramic grain according to claim 1 or 2 or 6 or 7, characterized in that: the cleaning device (7) is used for removing residual ceramic powder (5) on the surface of the rolling grain piece (41).

9. The roll forming apparatus for ceramic grain of claim 4, wherein: the upper steel strip (11) between the upper forming press roll (12) and the first driven roll (14) is formed as a feed guide section, and the lower steel strip (21) between the lower forming press roll (22) and the second driven roll (24) is formed as a feed transport section, the feed guide section being disposed obliquely to the feed transport section.