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CN-122008567-A - Forming machine for dampproof and crack-resistant stone plastic plate and forming process thereof

CN122008567ACN 122008567 ACN122008567 ACN 122008567ACN-122008567-A

Abstract

The invention relates to the technical field of stone plastic plate production, and discloses a forming machine for a dampproof and crack-resistant stone plastic plate and a forming process thereof, wherein the forming machine comprises a main frame, a plurality of hot press rollers are arranged on the main frame, a stone plastic substrate and a decorative layer are respectively conveyed to the main frame through corresponding feeding mechanisms and are subjected to hot pressing compounding by the hot press rollers to form the stone plastic plate, a substrate treatment piece is arranged at the front end of a feeding side of the main frame, the substrate treatment piece and one of the plurality of hot press rollers are correspondingly matched to form a traction group, the high Wen Kaicao is completed in a traction feeding stage, at the moment, the stone plastic substrate is not pressed under high pressure, a compact layer is not formed on the surface, water vapor wrapped inside can be rapidly discharged through a regular moisture discharging channel, and at the same time, the high temperature of the traction hot rollers can assist slotting, can accelerate evaporation of water vapor inside the substrate, so that the water vapor can be thoroughly removed before subsequent hot pressing compounding, defects such as bubbles and cracking caused by residual residues are avoided from the source, and the treated stone plastic plate is more compact and uniform in the inner structure.

Inventors

  • JIA DANNI
  • WU LONGFEI
  • WU QIANGQIANG

Assignees

  • 海宁市沪明塑钢有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (10)

  1. 1. The forming machine for the dampproof and crack-resistant stone plastic plate comprises a main frame (1), wherein a plurality of hot-pressing rollers (11) are arranged on the main frame (1), a stone plastic substrate (12) and a decorative layer (13) are respectively conveyed to the main frame (1) through corresponding feeding mechanisms and are subjected to hot-pressing compounding to form the stone plastic plate through the hot-pressing rollers (11), and the forming machine is characterized in that a substrate processing piece (2) is arranged at the front end of the feeding side of the main frame (1), the substrate processing piece (2) is correspondingly matched with one of the plurality of hot-pressing rollers (11) to form a traction group, the traction group is only used for carrying out traction conveying on the stone plastic substrate (12), the rest hot-pressing rollers (11) provide a hot-pressing compounding function, grooving pieces are arranged on the substrate processing piece (2) and share the same heat source with the hot-pressing rollers (11), and are used for grooving the bottom of the stone plastic substrate (12) in the traction group traction process to form a wet drainage channel, and the wet drainage channel is conveyed to the hot-pressing rollers (11) for the subsequent compounding process, and is subjected to hot-pressing compounding process.
  2. 2. The molding machine for the moistureproof and anti-crack stone plastic plate according to claim 1, wherein the substrate processing piece (2) comprises a traction hot roller (21) rotatably assembled on the main frame (1), the traction hot roller (21) and the waste heat compression roller (11) share the same driving source and the same heat source, and the traction hot roller (21) is correspondingly matched with one of a plurality of hot compression rollers (11) to form a traction group together.
  3. 3. The machine for forming the dampproof and crack-resistant stone plastic plate according to claim 2, wherein a plurality of concave parts (22) are formed on the circumferential surface of the traction hot roller (21), the concave parts (22) enable the circumferential surface of the traction hot roller (21) to form relatively protruding pressing parts, the concave parts (22) and the pressing parts together form grooving pieces, when the traction hot roller (21) rotates, the relatively protruding pressing parts on the circumferential surface of the traction hot roller press the bottoms of the stone plastic substrates (12), gaps are formed between corresponding positions of the concave parts (22) and the bottoms of the stone plastic substrates (12), and then moisture discharging channels are formed on the bottoms of the stone plastic substrates (12).
  4. 4. The machine for forming the moistureproof and anticracking stone plastic plate according to claim 2, wherein a plurality of convex parts (23) are detachably arranged on the surface of the traction hot roller (21), the convex parts (23) jointly form the grooving piece, the convex parts (23) rotate along with the traction hot roller (21) to groove the bottom of the stone plastic substrate (12) in the traction process, and the moisture removal channel is formed.
  5. 5. The molding machine for the moistureproof and anti-cracking stone plastic plate, as set forth in claim 4, characterized in that the convex parts (23) are of split type structure, a plurality of split type convex parts (23) are distributed at intervals along the circumferential direction of the traction hot roller (21), each split type convex part (23) is fixedly provided with a connecting block (231), a bolt piece (232) is connected between every two oppositely arranged connecting blocks (231) in a threaded manner, and the split type convex parts (23) can be tightly clamped and fixed on the surface of the traction hot roller (21) by tightening the bolt piece (232).
  6. 6. The molding machine for the moistureproof and anti-cracking stone plastic plate according to claim 2, 3 or 4, wherein a groove system absorbing piece (3) is arranged between the substrate processing piece (2) and a hot pressing roller (11) for subsequent hot pressing and compounding, a negative pressure module (4) is fixedly arranged at the bottom of the groove system absorbing piece (3), the top outline of the groove system absorbing piece (3) is matched with the shape of a moisture discharging channel at the bottom of the stone plastic substrate (12), and the top of the groove system absorbing piece (3) is correspondingly arranged with the moisture discharging channel.
  7. 7. The molding machine for the moistureproof and anti-cracking stone plastic plate, as set forth in claim 6, wherein the groove system absorbing member (3) comprises a splitter plate (31) fixedly connected to the main frame (1), the negative pressure module (4) is fixedly connected to the bottom of the splitter plate (31), the top of the splitter plate (31) is fixedly connected with a plurality of hollow absorbing strips (32), the number of the hollow absorbing strips (32) is consistent with that of the moisture-discharging channels, the shape of the hollow absorbing strips (32) is matched with that of the moisture-discharging channels, and the hollow absorbing strips (32) are positioned inside the moisture-discharging channels.
  8. 8. The molding machine for the moistureproof and anti-cracking stone plastic plate according to claim 7, wherein the hollow suction bar (32) consists of a suction bar main body (321), a plurality of inclined parts (322) and a plurality of output ports (323), the suction bar main body (321) is fixedly communicated with the top of the flow distribution plate (31), the inclined parts (322) are symmetrically arranged on the surface of the suction bar main body (321), the inclined parts (322) are gradually contracted along the conveying direction of the stone plastic substrate (12), the output ports (323) are all arranged on the inclined surfaces of the inclined parts (322), a gap is kept between each inclined part (322) and the inner wall of the moisture removal channel, and a relatively independent negative pressure adsorption space is formed between every two adjacent inclined parts (322) and the inner wall of the moisture removal channel in a surrounding mode.
  9. 9. The technology for forming the moistureproof and anti-cracking stone plastic plate is applied to the forming machine for the moistureproof and anti-cracking stone plastic plate as claimed in claim 1, and is characterized by comprising the following steps: feeding and conveying, namely conveying a stone plastic substrate (12) and a decorative layer (13) to the front end of the feeding side of a main frame (1) through corresponding feeding mechanisms respectively; Drawing and slotting, namely drawing and conveying the stone plastic substrate (12) by a drawing group, and slotting a slotting piece on the substrate processing piece (2) at the bottom of the stone plastic substrate (12) to form a moisture removal channel; negative pressure dehumidification, namely negative pressure suction is carried out on water vapor in a moisture discharging channel by a groove system absorbing piece (3) to reduce the moisture content in the stone plastic substrate (12); step four, hot-pressing compounding, namely hot-pressing compounding and molding the grooved and dehumidified stone-plastic substrate (12) and the decorative layer (13) by a hot-pressing roller (11) for subsequent hot-pressing compounding, and trowelling a moisture-discharging channel in the hot-pressing process; and fifthly, outputting a finished product, wherein the formed dampproof and crack-resistant stone plastic plate is conveyed from the discharging side of the main frame (1).
  10. 10. The process for forming the moistureproof and crack-resistant stone plastic plate according to claim 9, wherein the process comprises the following steps: in the second step, the traction speed of the traction group is 5-15m/min, and the temperature of the grooving piece is kept consistent with the temperature of the hot pressing roller (11) and is 160-190 ℃; in the third step, the negative pressure value of the negative pressure module (4) is-0.02 MPa to-0.08 MPa; in the fourth step, the hot pressing pressure of the hot pressing roller (11) for hot pressing compounding is 1-3MPa, and the hot pressing temperature is 170-200 ℃.

Description

Forming machine for dampproof and crack-resistant stone plastic plate and forming process thereof Technical Field The invention relates to the technical field of stone plastic plate production, in particular to a forming machine for a dampproof and crack-resistant stone plastic plate and a forming process thereof. Background With the rapid development of the assembly type building and green home decoration industry, the stone plastic plate is used as a novel decorative material with environmental protection, wear resistance and cost performance, and is widely applied to the scenes of indoor floors, wall surfaces, furniture veneers and the like. The market puts higher demands on the dampproof and crack-resistant performance of the stone plastic plate, especially in the use environment with humidity and large temperature difference change, the defects of easy cracking, delamination and the like caused by water vapor residues in the plate become a core pain point which restricts the application range of the stone plastic plate. The current mainstream stone plastic plate production process is 'melting plasticization-hot pressing composite-cooling shaping', the core link is that a molten state stone plastic substrate and a decorative layer are attached into a whole through a hot pressing roller, but when the process is used for solving the problem of residual moisture in the substrate, no effective solution is formed, and the moisture-proof and crack-resistant performances of a finished product are required to be improved through optimization of the process and equipment. The key defect of the prior art is that the problem of moisture residue in the stone plastic substrate cannot be fundamentally solved, namely, firstly, the main component of the stone plastic substrate, namely, heavy calcium carbonate powder (stone powder), has strong hygroscopicity, and is extremely easy to absorb trace moisture in air in the raw material storage and mixing processing process, meanwhile, in order to ensure the plasticizing effect of the substrate, the processing aid added in the formula and the residual process moisture of equipment cannot be completely volatilized in the high-temperature plasticizing stage, namely, because the fluidity of the molten stone plastic substrate is high, the non-volatilized moisture and air can be rapidly wrapped, and the existing process is heated only through the high Wen Duanzan in the plasticizing stage, so that the moisture is permanently sealed in the substrate. Secondly, the prior art directly adopts a hot pressing roller to carry out high-pressure lamination on a molten substrate with thicker initial thickness, a compact layer can be formed on the surface of the substrate, under the action of high pressure, molten materials on the surface layer of the substrate are quickly compacted, cooled and solidified to form a compact closed structure, water vapor wrapped inside is firmly locked with air, and residual water vapor is heated and expanded during the subsequent hot pressing lamination, so that bubbles and cracks are easily generated inside the substrate, the lamination firmness of the substrate and a decorative layer is simultaneously damaged, and the problems of insufficient dampproof and crack resistance, shortened service life and the like of a finished product plate are finally caused. Therefore, the invention provides a forming machine for a moistureproof and anti-cracking stone plastic plate and a forming process thereof. Disclosure of Invention The invention aims to provide a forming machine for a moistureproof and anti-cracking stone plastic plate and a forming process thereof, so as to solve the problems in the background technology. In order to achieve the purpose, according to the first aspect, the invention provides the technical scheme that the forming machine for the dampproof and crack-resistant stone plastic plate comprises a main frame, wherein a plurality of hot-pressing rollers are arranged on the main frame, a stone plastic substrate and a decorative layer are respectively conveyed to the main frame through corresponding feeding mechanisms and are subjected to hot-pressing compounding to form the stone plastic plate through the hot-pressing rollers, a substrate processing piece is arranged at the front end of a feeding side of the main frame, the substrate processing piece and one of the hot-pressing rollers are correspondingly matched to form a traction group, the traction group is only used for carrying out traction conveying on the stone plastic substrate, the rest hot-pressing rollers are provided with a hot-pressing compounding function, grooved pieces are arranged on the substrate processing piece, the grooved pieces and the hot-pressing rollers share the same heat source, and the grooved pieces are used for carrying out grooving processing on the bottom of the stone plastic substrate in the traction group to form a moisture discharging channel, and the moisture d