Plate production line and plate production process

Abstract

The present invention provides a plate production line and a plate production process, the plate production line comprises: a plate material blank heating mechanism for heating the plate material blank; a calender, according to the plate processing flow, the discharge end of the plate material blank heating mechanism is located at the front end of the calender feeding end, so that the plate material blank enters the calender after heating. The plate production process comprises the following steps: making a plate material blank; preheating the plate material blank; the plate material blank after preheating enters the calender for coating and calendering. The plate production line and production process provided by the present invention add a plate material blank heating mechanism, so that the plate material blank is preheated before entering the calender. The preheating process softens the plate in advance, which can ensure that the blank enters the calender smoothly, no longer requires manual intervention, and can also reduce the heating requirements of the calender for the plate material blank, even if the passing speed of the plate in the calender is increased, the plate processing speed can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of plate processing, and in particular to a plate production line and a plate production process. Background Art

[0002] The structure of the traditional board production line includes: mixer, extruder, mold, shaping mechanism, calender, and rear-end transportation and cutting equipment, etc. The mixer is used to mix the materials; the mixed materials are extruded in layers by the extruder and enter the mold; after the mold extrude the embryo, it is initially extruded and shaped by the shaping mechanism, and then enters the calender, which calenders and coats the embryo, and then transports it to the rear end to be cut into finished board products.

[0003] The existing sheet production line has the problems of low production efficiency and low yield. Taking the production of WPC sheets as an example, since the finished WPC sheets require good flatness, the traditional sheet production line is usually only suitable for 80 extruders. The production efficiency of the overall production line can usually only reach 400Kg / hour, and the thickness error of the finished sheet is usually ±0.15mm, which is relatively large. In addition, after the blank of the mold base is shaped by the shaping mechanism, the temperature will drop, and the blank is hard and cannot smoothly enter the calender roller group of the calender. Manual intervention is required, and the operator puts the blank into the gap of the calender roller group.

[0004] The technical defects of the plate production line cause the following technical problems:

[0005] After the board material blank is extruded through the die, it needs manual intervention to put the board material blank into the calender after cooling and shaping, resulting in low production efficiency; the blank directly enters the calender, and the calender heats and applies film to it. The speed of the calender roller of the calender is low to ensure that the board material blank is fully heated, foamed, and sticky between the calender rollers to ensure the smooth completion of the film application process, further affecting the processing efficiency and product rate of the entire production line. Summary of the invention

[0006] The object of the present invention is to provide a plate production line and a plate production process, which can improve the production capacity and plate yield rate compared with traditional production lines.

[0007] In order to achieve the above objectives, the present invention provides the following technical solutions:

[0008] Plate production line, including:

[0009] A plate material embryo heating mechanism, used for heating the plate material embryo;

[0010] According to the plate processing flow, the discharge end of the plate material blank heating mechanism is located at the front end of the calender feeding end, so that the plate material blank enters the calender after being heated.

[0011] Preferably, the board material blank heating mechanism comprises at least one heating box.

[0012] Preferably, the plate material embryo heating mechanism comprises a plurality of heating boxes, and the plate material embryo passes through the plurality of heating boxes in sequence.

[0013] Preferably, the sheet material embryo heating mechanism comprises at least one group of heating rollers, each group of heating rollers comprises two heating rollers arranged at an interval, and the sheet material embryo can pass through the gap between the two heating rollers.

[0014] As a preference: the production line further comprises:

[0015] The plate material blank cooling and forming mechanism comprises at least one group of cooling and forming plate groups, each group of cooling and forming plate groups comprises two forming plates arranged at intervals, and the plate material blank can pass through the gap between the two forming plates; according to the processing flow, the discharge end of the plate material blank cooling and forming mechanism is located at the front end of the feeding end of the plate material blank heating mechanism.

[0016] As a preference, the production line further comprises a blank traction mechanism, and according to the plate material processing flow, the blank traction mechanism is arranged between the plate material blank cooling and shaping mechanism and the blank heating mechanism.

[0017] Preferably, the blank traction mechanism comprises at least one group of traction rollers, each group of traction rollers comprises two traction rollers arranged at an interval, and the blank material can pass through the gap between the two traction rollers.

[0018] As a preference, a discharge end of the plate material blank cooling and shaping mechanism and an inlet of the plate material blank heating mechanism are spaced apart to allow the plate material blank to be air-cooled.

[0019] Preferably, the production line further comprises a mould, and according to the plate processing flow, the discharge end of the mould is located at the front end of the feed end of the plate material blank heating mechanism.

[0020] The board production process, using the above-mentioned board production line, includes the following steps:

[0021] Making board material embryos;

[0022] Preheating the board material embryo;

[0023] After preheating, the board material blank enters the calender for coating and calendering.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The plate production line provided by the present invention adds a plate material embryo heating mechanism, so that the plate material embryo is preheated before entering the calender. The preheating process softens the plate in advance, which, on the one hand, can ensure that the embryo enters the calender smoothly without manual intervention, and on the other hand, can reduce the heating requirements of the calender for the plate material embryo, and even if the passing speed of the plate in the calender is increased, the processing quality can be guaranteed, and further, the plate processing speed can be increased.

[0026] This improvement in the sheet production line enables the production line to adapt to high-speed processing requirements and can be equipped with high-speed processing equipment. For example, a high-speed extruder can be selected at the front end of the production line to increase the speed of the entire production line, improve production capacity and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described in detail below in conjunction with the embodiments and drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the plate production line of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a plate production line according to a second embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of a plate production line according to a third embodiment of the present invention;

[0031] Figure 4 This is a schematic structural diagram of a plate production line according to a fourth embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the overall structure of the plate production line of the present invention;

[0033] Figure 6 This is a schematic diagram of the overall structure of a plate production line according to another embodiment of the present invention;

[0034] in:

[0035] 1-calender, 101-wear-resistant film unwinding mechanism, 102-color film unwinding mechanism, 103-first solid layer unwinding mechanism, 104-second solid layer unwinding mechanism;

[0036] 2-heating box, 201-first heating box, 202-second heating box;

[0037] 3-heating roller group, 301-first heating roller, 302-second heating roller, 303-cylinder;

[0038] 4-Cooling shaping plate group, 401-first shaping plate, 402-second shaping plate,

[0039] 5-Transmission roller;

[0040] 6-traction roller group, 601-first traction roller, 602-second traction roller;

[0041] 7-die, 8-extruder, 9-mixer. DETAILED DESCRIPTION

[0042] The technical scheme in the specific embodiment of the present invention will be described in detail and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only some specific implementation methods of the overall technical scheme of the present invention, rather than all implementation methods. Based on the overall concept of the present invention, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of the present invention.

[0043] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the terms "upper", "lower", "vertical", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not used to imply relative importance.

[0046] The present invention provides a plate production line, which can be used for the production of plates such as flooring, and is particularly suitable for the production of plates such as WPC and SPC.

[0047] Example 1

[0048] Plate production line, overall structure reference Figure 5 and Figure 6 , including mixer 9, extruder 8, mold 7, etc., and some conveying and cutting equipment at the rear end, which are not shown in the production line diagram. The materials needed to produce the board are first put into the mixer 9 for mixing, and then extruded in layers by the extruder 8: the number and selection of the extruder 8 depend on the structure of the board to be processed; the layered extruded materials are initially extruded and shaped by the mold 7 to form a board material embryo. The embryo that is ejected from the mold 7 has temperature, but before the embryo is ejected from the mold and enters the calender, it will be affected by external conditions and cooled and hardened.

[0049] The plate production line provided by the present invention also includes a plate material embryo heating mechanism and a calender.

[0050] The plate material blank heating mechanism is used to heat the plate material blank; the blank mentioned here is at least the blank obtained after being processed by the mold 7;

[0051] According to the sheet material processing flow, the discharge end of the sheet material blank heating mechanism of the calender 1 is located at the front end of the feed end of the calender, so that the sheet material blank enters the calender 1 after being heated.

[0052] Various forms of plate material blank heating mechanisms can be adopted, and this embodiment provides two.

[0053] The first implementation form of the plate material embryo heating mechanism is as follows: Figure 1 .

[0054] A heating box 2 is used as a heating mechanism for the sheet material blank, and the heating mechanism for the sheet material blank includes at least one heating box 2. The heating box 2 has an inlet and an outlet, and an electric heating structure and a conveying roller are provided inside the heating box 2. The sheet material blank enters through the inlet, is heated, and is conveyed to the calender through the outlet.

[0055] The number of heating boxes 2 is selected according to heating requirements, output requirements, plate types, etc. For example, in order to increase the output of the production line, the overall production line has a faster delivery speed, and the time for the plate to pass through a single heating box is relatively short. In this case, multiple heating boxes need to be set up for repeated heating to ensure that the blank is fully softened; because the properties of each type of blank material are different, the heating requirements are also different. For plates with high heating temperature requirements, the number of heating boxes 2 can be increased.

[0056] In this embodiment, two heating boxes 2 are used and arranged in sequence. The board material embryo first enters the first heating box 201, and enters the second heating box 202 through the outlet of the first heating box to be fully heated. At the same time, using multiple heating boxes can also further increase the board production.

[0057] The second implementation form of the plate material embryo heating mechanism is as follows: Figure 2 .

[0058] A heating roller group is used as a heating mechanism for the sheet material blank. The sheet material blank heating mechanism includes at least one heating roller group 3, each heating roller group includes two heating rollers spaced longitudinally, a first heating roller 301 located at the top and a second heating roller 302 located at the bottom, and a heating oil passage is provided in the heating roller. The sheet material blank can pass through the gap between the two heating rollers by heating with the heating oil. One or two heating rollers in each heating roller group can be connected to a gap adjustment mechanism for adjusting the gap between the two heating rollers according to the thickness of the sheet material blank. For example, a hydraulic adjustment mechanism or a motor adjustment mechanism can be used. In this embodiment, a cylinder 303 is used. The cylinder 303 is connected to the first heating roller 301 located at the top, and the longitudinal position of the first heating roller 301 can be adjusted.

[0059] The number of the heating roller groups 3 can also be selected according to heating requirements, production requirements, plate type, etc. In order to ensure sufficient heating effect, multiple groups of heating roller groups 3 can be selected.

[0060] This structure has the following advantages:

[0061] (1) Before the sheet material blank enters the calender for processing, it is preheated by the sheet material blank heating mechanism to soften the texture. During the process of the sheet material blank being transported to the calender 1 by the roller, it has a vertical downward movement trend. At the end of the roller, there is a vertical position difference between the roller and the calender inlet, so the blank can enter the calender smoothly. The flexible blank state can ensure that the blank is not stretched. If the substrate is stretched, it will affect the subsequent film laminating texture effect.

[0062] (2) Compared with the cold blank entering the calender 1, it is heated and modified by the calender 1. After preheating, the blank is accelerated to produce viscosity so as to adhere to the sheet film, thereby reducing the processing time of the calender 1, increasing the speed of the calender, and increasing the output. A high-speed extruder can be configured, and the output can be increased from 400Kg / hour to 800Kg / hour, or even more.

[0063] (3) Preheating can improve the quality of the plate. The thickness error of the finished plate is usually ± 0.15mm, which is reduced to ± 0.10mm.

[0064] Example 2

[0065] The plate production line provided in this embodiment is based on the embodiment 1, and further adds a plate material blank cooling and shaping mechanism for cooling and modifying the plate material blank. Figure 3 and Figure 4 , which are schematic diagrams of two specific implementation structures.

[0066] The plate material blank cooling and shaping mechanism is arranged at the discharge end of the mold 7, and its function is to modify the material blank so that after entering the calender, the blank can generate viscosity after heating. The plate material blank cooling and shaping mechanism includes at least one group of cooling and shaping plate groups 4, each group of cooling and shaping plate groups includes two shaping plates arranged at intervals, a first shaping plate 401 located at the top and a second shaping plate 402 located at the bottom, and the plate material blank can pass through the gap between the two shaping plates; according to the processing flow, the discharge end of the plate material blank cooling and shaping mechanism is located at the front end of the feeding end of the plate material blank heating mechanism. After the plate material blank is cooled, it enters the heating mechanism. This embodiment adopts three groups of cooling and shaping plate groups 4, and the length is greatly improved compared with the length of the cold zone shaping mechanism in the prior art, which can improve the processing effect and processing speed. The first shaping plate 401 located at the top is connected to the adjusting cylinder, and the gap between the two shaping plates can be adjusted.

[0067] As a further optimization of the present invention, a distance is set between the discharge end of the plate material blank cooling and shaping mechanism and the inlet of the plate material blank heating mechanism, and specifically a section of conveying roller 5 is set, and the transmission roller 5 is exposed to the air so that the plate material blank is further cooled by the air.

[0068] In order to ensure that the blank can smoothly enter the heating mechanism from the cooling and shaping mechanism, the production line also includes a blank traction mechanism. According to the plate processing process, the blank traction mechanism is arranged between the plate material blank cooling and shaping mechanism and the blank heating mechanism, specifically between the conveying roller 5 and the blank heating mechanism. The blank traction mechanism includes at least one group of traction rollers 6, each group of traction rollers includes two traction rollers arranged at intervals, a first traction roller 601 located at the top and a second traction roller 602 located at the bottom, and the plate material blank can pass through the gap between the two traction rollers. The first traction roller 601 located at the top is connected to the adjustment cylinder, which can adjust the gap between the two traction rollers.

[0069] For the production line using heating rollers as the material embryo heating mechanism, the heating roller group 3 and the pulling roller group have the same structure and are arranged in sequence. The difference is that the pulling rollers in the pulling roller group 6 are not heated. Figure 4 As shown, among the several groups of rollers arranged laterally, the four groups on the left are heating roller groups 3, and the four groups on the right are traction roller groups 6.

[0070] Example 3

[0071] The present invention further provides a plate production process, using the plate production line, the plate production process comprises the following steps:

[0072] (1) Make board material embryos.

[0073] The materials for producing the board are mixed by a mixer and then enter an extruder. The extruder extrudes the materials in layers to a mold 7, and the mold 7 shapes the board material embryos.

[0074] (2) Preheating of board material embryos.

[0075] The board processing can be carried out by using the processed semi-finished material blanks, or the mold 7 can be configured in the entire production line to carry out floor processing and production.

[0076] If the semi-finished blanks are used for production, the semi-finished blanks are sent to the plate material blank heating mechanism for preheating treatment.

[0077] If a die production line is used for sheet processing, the blanks coming out of the die 7 are warm blanks and need to be cooled and preheated before entering the calender.

[0078] The cooling process is divided into two stages, one is the cooling and shaping mechanism for the blank material, and the other is air cooling. The blank material coming out of the mold 7 first enters the gap between the cooling and shaping plate groups, and is cold-pressed and shaped by the cooling and shaping plate groups. For the cooling and shaping mechanism using a multi-stage cooling and shaping plate group, the blank material passes through the multi-stage cooling and shaping plate groups in sequence. After being discharged from the cooling and shaping mechanism, it passes through an air cooling section and then enters the blank material heating mechanism for preheating treatment.

[0079] After the preheating treatment, the embryo will be softened, and the embryo temperature will be restored to a temperature close to the temperature of the exit die 7, so that it can enter the calender more smoothly. For the embryo heating mechanism using a heating box, the embryo is sent to the entrance of the heating box. For the embryo heating mechanism using a multi-stage heating box in series, the embryo passes through the multi-stage heating boxes in sequence; for the embryo heating mechanism using a heating roller group as the embryo heating mechanism, the embryo is sent to the gap of the first group of heating roller groups. For the embryo heating mechanism using a multi-stage heating roller group in series, the embryo passes through the multi-stage heating rollers in sequence.

[0080] (3) Calendering and coating treatment.

[0081] After preheating, the board material blank enters the calender for coating and calendering.

[0082] After softening, the material has a certain temperature, but its temperature is still lower than the heating temperature of the calendering roller group. After the material enters the calendering roller group, it will be further heated to make it sticky and complete the coating process.

[0083] The film laminating structure of the calender is set according to the film to be laminated. In this embodiment, the film laminating structure includes a wear-resistant film unwinding mechanism, a color film unwinding mechanism, an upper solid layer unwinding mechanism and a lower solid layer unwinding mechanism, and the wear-resistant film, the color film, the upper solid layer and the lower solid layer are respectively guided to different calender rollers to complete the film laminating process.

[0084] Compared with traditional processes, this process can greatly improve production capacity. The production line using one heating box can achieve a production capacity of 600Kg / hour. Manufacturers using two heating boxes can achieve a production capacity of 800Kg / hour.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Plate production line, characterized by: include: Mould; The calender includes a calender roller group. According to the plate processing process, the discharge end of the plate material blank heating mechanism is located at the front end of the calender feeding end, so that the plate material blank enters the calender after being heated; Cooling and shaping mechanism: arranged at the discharge end of the mold, including at least one group of cooling and shaping plate groups, each group of cooling and shaping plate groups includes two shaping plates arranged at intervals, and the plate material embryo can pass through the gap between the two shaping plates; The plate material blank heating mechanism, according to the processing flow, the discharge end of the plate material blank cooling and shaping mechanism is located at the front end of the feed end of the plate material blank heating mechanism; the plate material blank heating mechanism is used to heat the plate material blank; the plate material blank heating mechanism restores the blank temperature to the temperature of the blank out of the mold to soften the blank but not stretch it, and the temperature of the softened blank is lower than the heating temperature of the calendering roller group; A support roller is arranged between the plate material embryo heating mechanism and the calender, and a vertical position difference exists between the end of the support roller and the feeding port of the calender.

2. The sheet production line according to claim 1, characterized in that: The board material blank heating mechanism comprises at least one heating box.

3. The sheet production line according to claim 2, characterized in that: The plate material blank heating mechanism comprises a plurality of heating boxes, and the plate material blank passes through the plurality of heating boxes in sequence.

4. The sheet production line according to claim 1, characterized in that: The plate material embryo heating mechanism comprises at least one group of heating rollers, each group of heating rollers comprises two heating rollers arranged at an interval, and the plate material embryo can pass through the gap between the two heating rollers.

5. The sheet production line according to claim 1, characterized in that: The production line also includes a blank traction mechanism. According to the plate material processing flow, the blank traction mechanism is arranged between the plate material blank cooling and shaping mechanism and the blank heating mechanism.

6. The sheet production line according to claim 5, characterized in that: The blank traction mechanism comprises at least one group of traction rollers, each group of traction rollers comprises two traction rollers arranged at an interval, and the blank material can pass through the gap between the two traction rollers.

7. The sheet production line according to claim 1, characterized in that: The discharging end of the plate material blank cooling and shaping mechanism and the feeding port of the plate material blank heating mechanism are arranged at intervals to allow the plate material blank to be air-cooled.

8. The sheet production line according to claim 1, characterized in that: The production line further comprises a mould, and according to the plate processing flow, the discharge end of the mould is located at the front end of the feed end of the plate material blank heating mechanism.

9. A sheet production process, using the sheet production line according to any one of claims 1 to 8, characterized in that: The following steps are involved: Die extrusion board material embryo; Cooling the board material embryo; Preheat the board material embryo to the same temperature as the die extruded embryo; After preheating, the board material blank enters the calender for coating and calendering, and the temperature of the calendering is higher than the preheating temperature.

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