Press-fit forming device for composite stone-plastic floor

Abstract

The invention discloses a press-fit forming device for a composite stone-plastic floor, and belongs to the technical field of floor manufacturing. A composite stone-plastic floor press-fit forming device comprises a bottom plate, a first press-fit roller is arranged above the bottom plate, a second press-fit roller and a third press-fit roller are arranged on one side of the first press-fit roller, the second press-fit roller is located above the first press-fit roller in an inclined mode, and the third press-fit roller is located below the first press-fit roller in an inclined mode. And the second pressing roller is positioned right above the third pressing roller. The problems that when an existing stone-plastic plate is pressed, stress concentration in high-pressure pressing is prone to causing plate cracking, and the stone-plastic plate cannot well adapt to thickness fluctuation of stone-plastic raw materials are solved. By arranging the second pressing roller and the third pressing roller, traditional one-time high pressure is decomposed into two-time gradient pressurization in a staged gradual pressure applying mode, a dynamic gap control system based on real-time data feedback is arranged, the pressing gap is accurately controlled, and raw material thickness fluctuation is compensated in a self-adaptive mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of floor manufacturing, in particular to a composite stone-plastic floor pressing and forming device. BACKGROUND

[0002] In the current composite stone-plastic floor pressing and forming process, high-pressure pressing process is prone to cause stress concentration in the board. The traditional pressing device adopts single roller or symmetrical double roller structure, and the pressure distribution is uneven when high pressure is applied, resulting in that the local area of the board bears overload pressure. This stress concentration phenomenon is easy to cause micro-cracks in the stone-plastic composite material during the pressing stage, and the cracks expand during the subsequent cooling and setting process, finally causing the finished product to crack or delaminate, which seriously affects the product qualification rate.

[0003] At the same time, due to the difference in formula and the fluctuation in pretreatment, the stone-plastic raw material often has a thickness deviation of more than ±0.3mm. The existing pressing equipment lacks dynamic gap adjustment capability and cannot respond to the thickness change of the board in real time. When the over-thick area enters the pressing area, the gap between the pressing rollers cannot be self-adaptively enlarged, causing the instantaneous pressure to rise sharply and intensify the stress concentration; while the over-thin area causes insufficient pressing due to the too large gap, and the surface density is insufficient. This rigid pressing mode is difficult to balance the contradiction between thickness fluctuation and pressure stability, resulting in uneven thickness and surface concave-convex defects of the finished product. SUMMARY

[0004] The purpose of the present application is to provide a composite stone-plastic floor pressing and forming device, which forms a staged pressing mechanism by setting the second pressing roller above the first pressing roller and the third pressing roller below the first pressing roller, decomposes the traditional one-time high pressure into two times of gradient pressure by a gradual pressing method in stages, releases the internal stress of the material step by step, sets a dynamic gap control system based on real-time data feedback, accurately controls the pressing gap, and realizes self-adaptive compensation of the thickness fluctuation of the raw material, thereby solving the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A composite stone-plastic floor pressing and forming device, comprising a bottom plate, a first pressing roller is arranged above the bottom plate, a second pressing roller and a third pressing roller are arranged on one side of the first pressing roller, the second pressing roller is arranged above the first pressing roller, the third pressing roller is arranged below the first pressing roller, and the second pressing roller is arranged directly above the third pressing roller;

[0007] The axes of the first pressing roller, the second pressing roller and the third pressing roller are parallel to each other and extend horizontally;

[0008] Symmetrical supports are arranged on the bottom plate, a horizontal rod support and a vertical rod support are fixed on the supports, the horizontal rod support is provided with a horizontal mounting groove, a horizontal adjusting hydraulic rod is arranged in the groove, and the piston rod end of the horizontal adjusting hydraulic rod is connected with a horizontal adjusting block;

[0009] The first rotating shafts at both ends of the first pressing roller are connected with horizontal adjusting blocks through bearings; screw rods are symmetrically arranged at the top end and the bottom end of the vertical rod support, vertical adjusting blocks are threadedly connected with the screw rods, and the vertical adjusting blocks are respectively connected with the second rotating shaft of the second pressing roller and the third rotating shaft of the third pressing roller through adjusting rods.

[0010] Preferably, longitudinal installation grooves are arranged on the side surfaces of the vertical rod support, and angle adjusting hydraulic rods are hingedly connected in the grooves; the piston rod ends of the angle adjusting hydraulic rods are pivotally connected with the adjusting rods, and the pivot points are close to the second rotating shaft or the third rotating shaft.

[0011] The angle adjusting hydraulic rods, the adjusting rods and the vertical rod support form a triangular structure.

[0012] Preferably, limiting grooves are arranged on the top surface and the bottom surface in the transverse installation groove, and the upper side and the lower side of the horizontal adjusting block are embedded in the limiting grooves.

[0013] Preferably, thermocouples are axially embedded in the roller bodies of the first pressing roller, the second pressing roller and the third pressing roller, and the roller bodies are uniformly distributed with 6 groups of temperature measuring points along the length direction.

[0014] Preferably, pressure-sensitive sensing films are attached to the surfaces of the second pressing roller and the third pressing roller, and the films are composed of 10mm*10mm pressure sensing units to form a matrix.

[0015] Preferably, a laser scanner and an infrared thermal imager are installed on the inlet side of the first pressing roller.

[0016] The laser scanner is signal connected with the horizontal adjusting hydraulic rod.

[0017] The infrared thermal imager is signal connected with the heat conduction oil temperature control system.

[0018] Preferably, a first transmission wheel is arranged at the top end of the screw rod, the first transmission wheels are connected through a first transmission belt, and one end of the screw rod is connected with a first adjusting motor.

[0019] A second transmission wheel is arranged at the bottom end of the screw rod, the second transmission wheels are connected through a second transmission belt, and one end of the screw rod is connected with a second adjusting motor.

[0020] Preferably, guide rollers are arranged on the bottom plate in an array, the guide rollers are located below the first pressing roller, and one end of each guide roller extends to the obliquely lower side of the gap between the third pressing roller and the first pressing roller.

[0021] Preferably, the first rotating shaft is connected with a driving motor, the driving motor is installed on the horizontal rod support through a clamping piece and is used for sliding along the extension direction of the horizontal rod support, and the output shaft of the driving motor is coaxially connected with the first rotating shaft.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1、The present application forms a hierarchical pressing mechanism by setting the second pressing roller above the first pressing roller and the third pressing roller below the first pressing roller. The rough pressing stage is completed by the first pressing roller and the second pressing roller with a larger gap to preliminarily shape the plate, and the fine pressing stage is realized by the first pressing roller and the third pressing roller with a smaller gap to realize high-precision compaction of the surface. This staged progressive pressing method decomposes the traditional one-time high pressure into two times of gradient pressure, so that the internal stress of the material is released step by step, effectively avoiding the instantaneous stress peak caused by single high pressure pressing, and significantly reducing the risk of cracking of the plate caused by stress concentration.

[0024] 2、The present application integrates an axial temperature measurement system and a surface pressure sensing film inside the pressing roller. The roller body inside is uniformly distributed with 6 groups of thermocouples to monitor the uniformity of the axial temperature field in real time, and when the temperature difference exceeds 5℃, the oil flow is automatically adjusted by partition. The pressure-sensitive sensing film generates a pressure thermal map in real time with a 10mm×10mm sensing unit matrix, and cooperates with the laser scanner on the inlet side to perform three-dimensional scanning on the plate thickness. When the thickness mutation or local pressure deviation is too large, the horizontal adjustment hydraulic rod synchronously adjusts the gap between the three rollers, and the angle adjustment hydraulic rod implements regional inclination compensation for the third pressing roller. This dynamic gap control system based on real-time data feedback accurately controls the pressing gap and realizes adaptive compensation for the thickness fluctuation of the raw material.

[0025] 3、The present application forms a composite pressure field by the oblique pressure of the second pressing roller and the reverse oblique pressure of the third pressing roller, so that after the plate is shaped by the oblique pressure in the rough pressing stage, the residual stress is offset by the reverse oblique pressure in the fine pressing stage, so that the internal shear stress of the plate is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the first axonometric view of the overall structure of the present application;

[0027] Figure 2 It is the second axonometric view of the overall structure of the present application;

[0028] Figure 3 It is the third axonometric view of the overall structure of the present application;

[0029] Figure 4 It is the first side view of the overall structure of the present application;

[0030] Figure 5 It is the second side view of the overall structure of the present application.

[0031] In the figure: 1, the first compression roller; 2, the second compression roller; 3, the third compression roller; 4, the longitudinal installation groove; 5, the horizontal rod support; 6, the vertical rod support; 7, the transverse installation groove; 8, the horizontal adjustment hydraulic rod; 9, the horizontal adjustment block; 10, the limiting groove; 11, the first rotating shaft; 12, the second rotating shaft; 13, the third rotating shaft; 14, the driving motor; 15, the screw rod; 16, the vertical adjustment block; 17, the adjustment rod; 18, the angle adjustment hydraulic rod; 19, the first transmission belt; 20, the first adjustment motor; 21, the first transmission wheel; 22, the second transmission wheel; 23, the second transmission belt; 24, the second adjustment motor; 24, the guide roller; 25, the pressure-sensitive sensing film; 26, the guide roller. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] In order to solve the problem that the existing stone plastic plate is prone to cracking due to stress concentration during high-pressure compression, and cannot well adapt to the thickness fluctuation of stone plastic raw materials, please refer to Figures 1-5 The technical solutions are provided in the embodiments as follows:

[0034] A composite stone plastic floor compression molding device, comprising a bottom plate, a first compression roller 1 is arranged above the bottom plate, a second compression roller 2 and a third compression roller 3 are arranged on one side of the first compression roller 1, the axes of the first compression roller 1, the second compression roller 2 and the third compression roller 3 extend horizontally and are parallel to each other, the second compression roller 2 is located obliquely above the first compression roller 1, the third compression roller 3 is located obliquely below the first compression roller 1 and in line contact with the first compression roller 1, and the second compression roller 2 is located directly above the third compression roller 3.

[0035] A thermocouple is axially embedded in the roller body of the first compression roller 1, the second compression roller 2 and the third compression roller 3, and there are 6 groups of temperature measuring points along the length direction of each roller, so as to monitor the internal temperature of the roller body in real time. The thermocouple signal is sent to the control console through a wireless transmission module, and when the axial temperature difference of the roller body is greater than 5°, the heat conduction oil flow of the corresponding partition is automatically adjusted to ensure the uniformity of the temperature field.

[0036] A pressure-sensitive sensing film 25 with a thickness of 0.2 mm and a temperature resistance of 250℃ is attached to the surface of the second compression roller 2 and the third compression roller 3. The film is composed of a matrix of pressure sensing units, each unit being 10 mm x 10 mm. During compression, a pressure and heat map is generated in real time. When the local pressure deviation is greater than 15%, the angle adjustment hydraulic rod 18 triggers to compensate and adjust the specific area.

[0037] A laser scanner and an infrared thermal imager are installed on the inlet side of the first calendering roller 1. The laser scanner performs three-dimensional profile scanning on the plate entering the nip, identifies thickness mutations or warping areas in advance, and synchronizes the data to the horizontal adjustment hydraulic rod 8 to pre-synchronize the gap between the first calendering roller 1 and the second calendering roller 2 and the first calendering roller 1 and the third calendering roller 3. The infrared thermal imager captures the temperature distribution of the plate surface in real time. When a low-temperature area less than 160℃ or a high-temperature area greater than 200℃ is detected, the temperature of the heat-conducting oil of the corresponding roller is automatically adjusted.

[0038] Symmetrical supports are arranged on both sides of the base plate, and horizontal rod supports 5 and vertical rod supports 6 are arranged on the supports. A horizontal installation slot 7 is formed on one side of the horizontal rod support 5 along its extension direction. A horizontal adjustment hydraulic rod 8 is arranged on one side of the horizontal installation slot 7. The piston rod end of the horizontal adjustment hydraulic rod 8 is fixedly connected with a horizontal adjustment block 9. First rotating shafts 11 at both ends of the first calendering roller 1 penetrate the horizontal adjustment block 9 and are connected with the horizontal adjustment block 9 through bearings. Limiting grooves 10 are formed on the inner top surface and the inner bottom surface of the horizontal installation slot 7. The upper and lower sides of the horizontal adjustment block 9 penetrate the limiting grooves 10, and the horizontal adjustment block 9 is limited by the limiting grooves 10. The first rotating shaft 11 on one side is connected with a driving motor 14. The driving motor 14 is installed on the horizontal rod support 5 through a clamping piece and can slide along the extension direction of the horizontal rod support 5, which facilitates the horizontal displacement of the first calendering roller 1.

[0039] A vertical rod support 6 is fixed to one side of each horizontal rod support 5 away from the horizontal installation slot 7. The horizontal rod support 5 divides the vertical rod support 6 into two parts of equal length and symmetry. Screw rods 15 are symmetrically arranged at the top end and the bottom end of the vertical rod support 6. The screw rods 15 are coaxially connected with the vertical rod support 6. Vertical adjustment blocks 16 are threadedly connected with the screw rods 15. One side of the vertical adjustment block 16 is provided with an internally threaded hole. The other side is pivotally connected with one end of an adjusting rod 17. The other end of the adjusting rod 17 located above is rotationally connected with second rotating shafts 12 at both ends of the second calendering roller 2. The other end of the adjusting rod 17 located below is rotationally connected with third rotating shafts 13 at both ends of the third calendering roller 3. Longitudinal installation slots 4 are symmetrically formed on the side of the vertical rod support 6 facing the second calendering roller 2. An angle adjustment hydraulic rod 18 is hingedly connected to one end of the longitudinal installation slot 4 close to the horizontal rod support 5. The piston rod end of the angle adjustment hydraulic rod 18 is pivotally connected with the adjusting rod 17. The pivot position is close to one side of the second rotating shaft 12, so that the angle adjustment hydraulic rod 18, the adjusting rod 17 and the vertical rod support 6 form a triangular structure.

[0040] Specifically, the vertical adjusting block 16 adjusts the position in the vertical direction through the threaded cooperation with the screw rod 15, and then the angle of the adjusting rod 17 can be adjusted, and meanwhile, the length of the angle adjusting hydraulic rod 18 is adjusted, so that the positions of the second pressing roller 2 and the third pressing roller 3 can be respectively adjusted in a small range, and then the gap distance and the gap position between the second pressing roller 2 and the first pressing roller 1 and between the third pressing roller 3 and the first pressing roller 1 are changed.

[0041] The top ends of the two screw rods 15 obliquely above the second pressing roller 2 are provided with first transmission wheels 21, the first transmission wheels 21 are connected through a first transmission belt 19, and the end of one of the screw rods 15 is further provided with a first adjusting motor 20, which drives the screw rod 15 to rotate, and the two screw rods 15 above are synchronously rotated through the first transmission belt 19 and the first transmission wheels 21, so as to drive the two vertical adjusting blocks 16 above to longitudinally displace, so that the position of the second pressing roller 2 is adjusted by the adjusting rod 17 above cooperating with the angle adjusting hydraulic rod 18.

[0042] The bottom ends of the two screw rods 15 obliquely below the third pressing roller 3 are provided with second transmission wheels 22, the second transmission wheels 22 are connected through a second transmission belt 23, and the end of one of the screw rods 15 is further provided with a second adjusting motor 24, which drives the screw rod 15 to rotate, and the two screw rods 15 below are synchronously rotated through the second transmission belt 23 and the second transmission wheels 22, so as to drive the two vertical adjusting blocks 16 below to longitudinally displace, so that the position of the third pressing roller 3 is adjusted by the adjusting rod 17 below cooperating with the angle adjusting hydraulic rod 18.

[0043] The bottom plate is provided with guide rollers 26 arranged and distributed, the guide rollers 26 are located below the first pressing roller 1, one end of the guide rollers 26 is located obliquely below the gap between the third pressing roller 3 and the first pressing roller 1, and after the pressed plate material is pressed out from the gap between the third pressing roller 3 and the first pressing roller 1, the guide rollers 26 guide and support the pressed plate material to be guided out.

[0044] Working principle: the plate material first enters the rough pressing area between the first pressing roller 1 and the second pressing roller 2. The second pressing roller 2 is located obliquely above the first pressing roller 1, and the gap between the two is independently controlled by the vertical adjusting mechanism: the first adjusting motor 20 above drives the screw rod 15 to rotate, drives the vertical adjusting block 16 to longitudinally displace, and through the triangular linkage structure composed of the adjusting rod 17 and the angle adjusting hydraulic rod 18, the height position of the second pressing roller 2 is accurately adjusted, and the setting of the rough pressing gap is realized. At this time, the larger gap makes the plate material complete the preliminary shaping.

[0045] The rough-pressed plate material then enters the fine-pressing zone formed by the first pressing roller 1 and the third pressing roller 3. The third pressing roller 3 is located obliquely below the first pressing roller 1 and is in line contact with the roller surface. The gap therebetween is controlled by the independent lower adjustment system: the second adjustment motor 24 drives the lower screw rod 15 through the second transmission belt 23, drives the vertical adjustment block 16 to displace, fine-tunes the height of the third pressing roller 3 through the adjustment rod 17 and the angle adjustment hydraulic rod 18, forms a fine-pressing zone smaller than the rough-pressing gap, and realizes high-precision compaction of the plate material surface.

[0046] When it is necessary to synchronously adjust the rough-pressing and fine-pressing gaps, the horizontal adjustment hydraulic rod 8 pushes the horizontal adjustment block 9 to move along the transversely installed slot 7. The horizontal adjustment block 9 drives the first pressing roller 1 to displace transversely as a whole through the first rotation shaft 11, and since it is in line contact with the second pressing roller 2 and the third pressing roller 3 at the same time, the displacement will synchronously change the rough-pressing gap between the first pressing roller 1 and the second pressing roller 2 and the fine-pressing gap between the first pressing roller 1 and the third pressing roller 3. The limiting slot 10 restricts the movement trajectory of the horizontal adjustment block 9, ensuring the displacement accuracy.

[0047] The pressure-sensitive sensing film 25 monitors the pressure distribution of the fine-pressing zone in real time. If the local pressure deviation is greater than 15%, the angle adjustment hydraulic rod 18 performs inclination compensation on the corresponding area of the third pressing roller 3. When the inlet laser scanner identifies the abnormal thickness of the plate material, the data is synchronously transmitted to the horizontal adjustment hydraulic rod 8 to pre-adjust the position of the first pressing roller 1, avoiding sudden changes in the gap. The plate material formed by fine pressing is finally guided out by the guide roller 26.

[0048] It should be noted that the relational terms herein such as first and second, are used only to differentiate one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent in such a process, method, article, or apparatus.

[0049] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application.

Claims

1. A composite stone-plastic flooring pressing and molding device, comprising a base plate, characterized in that, A first pressing roller (1) is provided above the base plate. A second pressing roller (2) and a third pressing roller (3) are provided on one side of the first pressing roller (1). The second pressing roller (2) is located diagonally above the first pressing roller (1), the third pressing roller (3) is located diagonally below the first pressing roller (1), and the second pressing roller (2) is located directly above the third pressing roller (3). The axes of the first pressing roller (1), the second pressing roller (2), and the third pressing roller (3) are parallel to each other and extend horizontally; The base plate is symmetrically provided with brackets, and the brackets are fixed with horizontal rod brackets (5) and vertical rod brackets (6). The horizontal rod brackets (5) are provided with horizontal mounting grooves (7), and horizontal adjustment hydraulic rods (8) are provided in the grooves. The piston rod end of the rod is connected to a horizontal adjustment block (9). The first shaft (11) at both ends of the first pressing roller (1) is connected to the horizontal adjusting block (9) through bearings; the top and bottom ends of the longitudinal rod bracket (6) are symmetrically provided with screws (15), and the screws (15) are threaded with vertical adjusting blocks (16). The vertical adjusting blocks (16) are connected to the second shaft (12) of the second pressing roller (2) and the third shaft (13) of the third pressing roller (3) through adjusting rods (17).

2. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, The longitudinal rod support (6) has a longitudinal mounting groove (4) on its side, and an angle adjustment hydraulic rod (18) is hinged in the groove. The piston rod end of the angle adjustment hydraulic rod (18) is pivotally connected to the adjustment rod (17), and the pivot point is close to the second rotating shaft (12) or the third rotating shaft (13). The angle-adjusting hydraulic rod (18), the adjusting rod (17), and the longitudinal rod support (6) form a triangular structure.

3. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, Limiting grooves (10) are opened on the top and bottom surfaces of the transverse mounting groove (7), and the upper and lower sides of the horizontal adjusting block (9) are embedded in the limiting grooves (10).

4. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, Thermocouples are axially embedded inside the bodies of the first pressing roller (1), the second pressing roller (2) and the third pressing roller (3), and six sets of temperature measuring points are evenly distributed along the length of the roller body.

5. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, The second pressing roller (2) and the third pressing roller (3) are bonded with a pressure-sensitive film (25), which is composed of a matrix of 10mm×10mm pressure sensing units.

6. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, A laser scanner and an infrared thermal imager are installed on the inlet side of the first pressing roller (1); The laser scanner is signal-connected to the horizontal adjustment hydraulic rod (8); The infrared thermal imager is connected to the heat transfer oil temperature control system.

7. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, The top end of the screw (15) is provided with a first transmission wheel (21), and the first transmission wheels (21) are connected by a first transmission belt (19). One end of the screw (15) is connected to a first adjusting motor (20). The bottom end of the screw (15) is provided with a second transmission wheel (22), and the second transmission wheels (22) are connected by a second transmission belt (23). One end of the screw (15) is connected to a second adjusting motor (24).

8. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, The base plate is provided with guide rollers (26) arranged in a row. The guide rollers (26) are located below the first pressing roller (1), and one end of them extends to the lower side of the gap between the third pressing roller (3) and the first pressing roller (1).

9. The composite stone-plastic flooring pressing and molding device according to claim 1, characterized in that, The first rotating shaft (11) is connected to the drive motor (14). The drive motor (14) is mounted on the crossbar bracket (5) by a snap-fit ​​and is used to slide along its extension direction. The output shaft of the drive motor (14) is coaxially connected to the first rotating shaft (11).

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