Molding equipment for stone-plastic box plate production

Abstract

The invention discloses forming equipment for stone plastic box plate production, and relates to the technical field of stone plastic box plate processing, the forming equipment comprises a calendering rack, the calendering rack is rotatably connected with three longitudinally arranged rotating shafts, and the three rotating shafts are fixedly connected with a preheating roller, a guide roller and a cooling roller respectively from top to bottom; and the rotating shafts in the preheating roller and the guide roller are movably connected with an eccentric frame, and the eccentric frame is fixedly connected with heat conduction cylinders which are symmetrically distributed along the eccentric frame. Heat transfer and cooling are conducted on the rolling preheating roller or guide roller through the heat conduction cylinder, the temperature of the preheating roller is prevented from being higher than the proper temperature needed for preheating the stone plastic box plate, the temperature of the preheating roller is kept at the proper preheating temperature, and therefore secondary melting caused by too high temperature and influence on the preheating effect are avoided; and meanwhile, the temperature of the guide roller is prevented from being higher than that of the cooling roller, so that the cooling forming effect of the cooling roller is prevented from being influenced by over-high temperature.

Description

Technical Field

[0001] The invention relates to the technical field of stone plastic box board processing, and in particular to a molding device for producing stone plastic box board. Background Art

[0002] The production of stone plastic box sheets usually involves multiple steps such as mixing, extrusion, calendering, cooling, and cutting. The mixed material is sent into the extruder, melted and plasticized under the action of heating and screw rotation. After the molten material comes out of the extruder, it enters the three-roll calender, which applies pressure to the molten material to stretch it into a flat sheet.

[0003] During the calendering process, the upper roller is usually at a relatively high temperature, which is used to preheat the sheet, soften it, improve plasticity, and facilitate subsequent calendering. The middle roller usually forms two calendering areas with the upper roller and the lower roller, of which the area with the upper roller is responsible for preliminary calendering, and the area with the lower roller completes the final calendering. At the same time, the lower roller sometimes has a cooling function to accelerate the cooling and shaping of the sheet. However, since the upper roller contacts the sheet melted at high temperature from the extruder for a long time, it is easy for the temperature of the upper roller to be higher than the appropriate temperature required for preheating, so that the sheet may melt for the second time, affecting the preheating and forming of the sheet. At the same time, since the middle roller is neither preheated nor cooled, but contacts the high-temperature imported stone plastic box sheet for a long time, its temperature gradually increases, which will affect the cooling temperature of the stone plastic box sheet when it is exported.

[0004] Based on the above situation, the present invention proposes a forming device for producing stone plastic box board. Summary of the invention

[0005] In order to overcome the shortcoming that the temperature of the upper roller and the middle roller of the calender will affect the preheating and cooling of the stone plastic box board, the present invention provides a molding device for producing the stone plastic box board.

[0006] A forming equipment for producing stone plastic box board, including a calender frame, the calender frame is rotatably connected to three longitudinally arranged rotating shafts, the three rotating shafts are fixedly connected to a preheating roller, a guide roller and a cooling roller from top to bottom, openings are arranged at both ends of the preheating roller, the guide roller and the cooling roller, the rotating shafts in the preheating roller and the guide roller are movably connected to a weight frame, the weight frame is fixedly connected to heat-conducting tubes symmetrically distributed along the weight frame, the symmetrically distributed heat-conducting tubes are connected to each other, the weight frame is fixedly connected to a circulating fan, and an air duct is connected between the heat-conducting tube and the adjacent circulating fan.

[0007] In one embodiment, the center of gravity of the eccentric weight frame is biased downward.

[0008] In one of the embodiments, it also includes a plurality of impellers, wherein the impellers are fixedly connected to the adjacent rotating shafts, the eccentric weight frame is fixedly connected to spray plates symmetrically distributed along the eccentric weight frame, the spray plates are connected to a plurality of guide tubes, the spray plates are fixedly connected to introduction plates, and the introduction plates are connected to the adjacent guide tubes.

[0009] In one of the embodiments, it also includes a fixed frame symmetrically distributed along the calender frame, the fixed frame is fixedly connected to the calender frame, a spray tube is fixedly connected inside the fixed frame, the calender frame is fixedly connected to an air duct symmetrically distributed along the calender frame, the calender frame is fixedly connected to a mounting frame symmetrically distributed along the calender frame, the air duct is connected to the mounting frame through an air pump, the air duct is connected to a longitudinally arranged suction block, and the suction block extends into the adjacent preheating roller, the guide roller and the cooling roller.

[0010] In one embodiment, the nozzles of the spray barrel are distributed circumferentially from top to bottom.

[0011] In one of the embodiments, it further includes a support frame arranged longitudinally along the calender frame, the support frame is fixedly connected to the calender frame, the support frame is threadedly connected to a screw rod, and the screw rod is rotatably connected to a wiping plate.

[0012] In one of the embodiments, it further includes telescopic rods symmetrically distributed along the support frame, and two ends of the telescopic rods are respectively fixedly connected to the adjacent support frame and the wiping plate.

[0013] In one embodiment, the side surface of the wiping plate is configured as a curved surface.

[0014] In one embodiment, the wiping plate has the same curvature as the preheating roller, the guide roller, and the cooling roller.

[0015] In one of the embodiments, it also includes a support plate symmetrically distributed along the calender frame, the support plate is fixedly connected to the calender frame, and a plurality of elastic telescopic components are fixedly connected to the support plate. Two connecting blocks in contact with each other are fixedly connected between the ends of adjacent elastic telescopic components. The inner part of the calender frame close to the connecting block is fixedly connected with fixed blocks symmetrically distributed along the calender frame. Constant temperature tubes are rotatably connected between the connecting blocks on the same horizontal line and between the fixed blocks on the same horizontal line, and the constant temperature tubes on the fixed blocks are rotatably connected to the calender frame.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The present invention uses a heat-conducting cylinder to transfer heat and cool the rolling preheating roller or guide roller, thereby preventing the temperature of the preheating roller from being higher than the appropriate temperature required for preheating the stone plastic box plate, so that the temperature of the preheating roller is maintained at an appropriate preheating temperature, thereby avoiding secondary melting due to excessive temperature and affecting the preheating effect, and at the same time preventing the temperature of the guide roller from being higher than the cooling roller, thereby avoiding excessive temperature affecting the cooling and molding effect of the cooling roller.

[0018] The present invention drives the impeller to rotate by rotating the rotating shaft, so that the temperature of the preheating roller or the guide roller is reduced. At the same time, the wind sprayed onto the inner wall of the preheating roller or the guide roller acts on the eccentric weight frame in the reverse direction, so that the eccentric weight frame is stabilized in the middle to prevent the heat transfer tube from shifting.

[0019] The present invention sucks out the gas in the preheating roller, the cooling roller and the guide roller through the suction block and then sprays it onto the preheating roller, the cooling roller and the guide roller, so as to achieve the effect of cooling the inside and outside of the preheating roller, the guide roller and the cooling roller.

[0020] The present invention can timely wipe the surfaces of the preheating roller, the guide roller and the cooling roller by using a wiping plate, thereby reducing the formation of discolored spots or hard blocks, making the surface of the stone plastic box plate smoother and the molding more beautiful.

[0021] The present invention utilizes a constant temperature tube to monitor the temperature of the stone plastic box board in real time during the extrusion process, and dynamically adjusts the intensity of preheating or cooling as needed to ensure that the temperature of the surface of the stone plastic box board is uniform and stable within a preset range, so that when the stone plastic box board is formed, the overall temperature change of its surface is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the calender frame, heat-conducting cylinder and other components of the present invention.

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the calender frame and the rotating shaft of the present invention.

[0025] Figure 4 It is a three-dimensional structural schematic diagram of components such as the heat-conducting tube and the eccentric weight frame of the present invention.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of components such as the eccentric weight frame, the circulating fan and the air guide duct of the present invention.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the impeller, spray plate, guide tube and other components of the present invention.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the spray plate, guide tube, introduction plate and other components of the present invention.

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the fixing frame, spray gun, air guide pipe and other components of the present invention.

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the air guide pipe, air pump, suction block and other components of the present invention.

[0031] Fig.10 It is a three-dimensional structural schematic diagram of the spray gun, air guide pipe and other components of the present invention.

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure of the supporting frame, wiping plate, screw and other components of the present invention.

[0033] Fig.12 It is a schematic diagram of the three-dimensional structure of the wiping plate, the screw rod, the telescopic rod and other components of the present invention.

[0034] Fig.13 It is a three-dimensional structural schematic diagram of components such as the thermostatic tube, the support plate and the elastic telescopic assembly of the present invention.

[0035] Fig.14 It is a schematic diagram of the three-dimensional structure of the support plate, elastic telescopic assembly, connecting block and other components of the present invention.

[0036] Figure numbers: 1_calender frame, 1101_rotating shaft, 1102_preheating roller, 11_guide roller, 1103_cooling roller, 12_heat conduction tube, 13_biased weight frame, 14_circulating fan, 15_air guide duct, 2_impeller, 21_spray plate, 22_guide duct, 23_introduction plate, 3_fixed frame, 31_spray tube, 32_air guide duct, 321_mounting frame, 33_air pump, 34_suction block, 4_support frame, 41_wiping plate, 42_screw, 43_telescopic rod, 5_constant temperature tube, 51_support plate, 52_elastic telescopic component, 53_connecting block, 54_fixed block. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0038] Embodiment 1: A forming device for producing stone plastic box board, such as Figures 1 to 5As shown, it includes a calender frame 1, which is rotatably connected to three longitudinally arranged rotating shafts 1101, and the three rotating shafts 1101 are fixedly connected to a preheating roller 1102, a guide roller 11 and a cooling roller 1103 from top to bottom respectively, and openings are arranged at both ends of the preheating roller 1102, the guide roller 11 and the cooling roller 1103. The rotating shafts 1101 in the preheating roller 1102 and the guide roller 11 are movably connected to a weight frame 13, and the center of gravity of the weight frame 13 is biased downward. The weight frame 13 is fixedly connected to heat-conducting tubes 12 symmetrically distributed along the front and back of the weight frame 13, and the right sides of the heat-conducting tubes 12 symmetrically distributed front and back are connected to each other through connecting pipes, and a circulating fan 14 is fixedly connected to the middle of the lower part of the eccentric weight frame 13, and an air inlet pipe and an air outlet pipe are arranged on the left side of the top of the circulating fan 14, and an air guide pipe 15 is connected between the heat-conducting tube 12 and the adjacent circulating fan 14.

[0039] First, the stone plastic box sheet coming out of the extruder is preheated and introduced through the gap between the preheating roller 1102 and the guide roller 11, and then cooled and led out from the gap between the cooling roller 1103 and the guide roller 11. During this calendering process, the circulating fan 14 is started, and the wind enters from the air inlet pipe on the top of the circulating fan 14, and then enters the heat-conducting cylinder 12 through the air guide pipe 15 on one side, and then returns to the circulating fan 14 from the air guide pipe 15 on the other side, and is discharged through the air outlet pipe on the top of the circulating fan 14. The discharged hot air passes through the preheating roller 1102. Or the openings at both ends of the guide roller 11 are discharged to the outside, so that the heat-conducting cylinder 12 transfers heat and cools the rolling preheating roller 1102 or the guide roller 11 to prevent the temperature of the preheating roller 1102 from being higher than the appropriate temperature required for preheating the stone plastic box plate, so that the temperature of the preheating roller 1102 is maintained at an appropriate preheating temperature, thereby avoiding secondary melting due to excessive temperature and affecting the preheating effect, and at the same time preventing the temperature of the guide roller 11 from being higher than the cooling roller 1103, thereby avoiding excessive temperature affecting the cooling and molding effect of the cooling roller 1103.

[0040] In addition, the setting of the center of gravity of the eccentric weight frame 13 downward can prevent the eccentric weight frame 13 from easily rotating with the rotating shaft 1101, so that the heat-conducting tube 12 is not easily displaced, so that the preheating roller 1102 or the guide roller 11 can be in uniform contact with the heat-conducting tube 12, and thus can conduct heat uniformly.

[0041] like Figure 6 to Figure 7 As shown, it also includes four impellers 2, and every two impellers 2 are fixedly connected to adjacent rotating shafts 1101. The lower part of the eccentric weight frame 13 is fixedly connected to a spray plate 21 symmetrically distributed along the front and back of the eccentric weight frame 13. The spray plate 21 is connected to three guide tubes 22. The left side of the top of the spray plate 21 is fixedly connected to an introduction plate 23, which is located on the right side of the adjacent impeller 2, and the introduction plate 23 is connected to the adjacent guide tube 22.

[0042] During the process of calendering the stone plastic box sheet, the rotation of the rotating shaft 1101 drives the impeller 2 to rotate. The wind generated by the impeller 2 is blown into the inlet plate 23, and then discharged into the spray plate 21 through the guide pipe 22, and then sprayed to the inner wall of the preheating roller 1102 or the guide roller 11 through the spray plate 21, thereby further reducing the temperature of the preheating roller 1102 or the guide roller 11. At the same time, the wind sprayed to the inner wall of the preheating roller 1102 or the guide roller 11 acts in the opposite direction to the weight frame 13, thereby maintaining the weight frame 13 stable in the middle to prevent the heat transfer tube 12 from shifting.

[0043] Embodiment 2: Based on embodiment 1, Figures 8 to 10 As shown, it also includes a fixed frame 3 which is symmetrically distributed along the calender frame 1, the fixed frame 3 is fixedly connected to the calender frame 1, a spray tube 31 is fixedly connected inside the fixed frame 3, the nozzles of the spray tube 31 are circumferentially distributed from top to bottom, an air duct 32 which is symmetrically distributed along the calender frame 1 is fixedly connected to the calender frame 1, a mounting frame 321 which is symmetrically distributed along the calender frame 1 is fixedly connected to the calender frame 1, the air duct 32 is connected to the mounting frame 321 through an air pump 33, and the side of the air duct 32 close to the guide roller 11 is connected to three longitudinally arranged suction blocks 34, and the three suction blocks 34 extend into the adjacent preheating roller 1102, guide roller 11 and cooling roller 1103 respectively.

[0044] Start the air pump 33, and the gas in the preheating roller 1102, the cooling roller 1103 and the guide roller 11 is sucked into the air duct 32 through the suction block 34, and then enters the mounting frame 321 through the air pump 33, and then enters the spray tube 31. The gas gradually cools down during the flow, and under the guidance of the fixed frame 3, it is sprayed onto the outer wall of the preheating roller 1102, the guide roller 11 and the cooling roller 1103, so as to achieve the effect of cooling the inside and outside of the preheating roller 1102, the guide roller 11 and the cooling roller 1103. After the molding is completed, turn off the air pump 33.

[0045] Embodiment 3: Based on embodiment 2, Figure 11 to Figure 12 As shown, it also includes three support frames 4 arranged longitudinally along the calender frame 1, the support frame 4 is fixedly connected to the rear side of the calender frame 1, the middle thread of the support frame 4 is connected to a screw rod 42, one end of the screw rod 42 is rotatably connected to a wiping plate 41, the side surface of the wiping plate 41 is set as a curved surface, the wiping plate 41 has the same curvature rate as the preheating roller 1102, the guide roller 11 and the cooling roller 1103, and two telescopic rods 43 symmetrically distributed along the left and right sides of the support frame 4 are fixedly connected between the support frame 4 and the adjacent wiping plates 41.

[0046] Dust, fibers or other tiny particles in the air may adhere to the surface of the preheating roller 1102 or the guide roller 11, and be embedded in the stone plastic box board during the molding process, resulting in spots or unevenness on the surface of the finished product, or material residues left over from the previous production. If not thoroughly cleaned, discolored spots or lumps will form on subsequent batches of stone plastic box boards. For this reason, timely wiping the surfaces of the preheating roller 1102, the guide roller 11 and the cooling roller 1103 with the wiping plate 41 can reduce the formation of discolored spots or lumps, making the surface of the stone plastic box board smoother and the molding more beautiful. In addition, by twisting the screw 42, the tightness of the contact between the wiping plate 41 and the preheating roller 1102 or the guide roller 11 can be adjusted according to the degree of easy cleaning of the impurities.

[0047] Embodiment 4: Based on embodiment 3, Figure 13 to Figure 14 As shown, it also includes two support plates 51 symmetrically distributed along the calender frame 1, the support plates 51 are fixedly connected to the rear side of the calender frame 1, four elastic telescopic components 52 are fixedly connected to the support plates 51, two connecting blocks 53 in contact with each other are fixedly connected between the ends of adjacent elastic telescopic components 52, and the inner part of the calender frame 1 close to the connecting block 53 is fixedly connected with a fixed block 54 symmetrically distributed along the calender frame 1, and the connecting blocks 53 on the same horizontal line and the fixed blocks 54 on the same horizontal line are rotatably connected with a constant temperature tube 5, and the constant temperature tube 5 on the fixed block 54 is rotatably connected to the calender frame 1.

[0048] When the stone plastic box board is extruded by the extruder, its surface temperature is inconsistent, resulting in a large temperature difference, which leads to poor consistency of surface gloss and color, and then spots, stripes or uneven color, affecting the appearance and texture, and may also affect the crystallinity and molecular orientation inside the material, resulting in inconsistent microstructure, further affecting the performance of the material, such as bending strength, toughness, etc. Therefore, after extrusion molding, the stone plastic box board is introduced and exported between the upper and lower adjacent constant temperature tubes 5. The constant temperature tube 5 can be used to monitor the temperature of the stone plastic box board during the extrusion process in real time, and dynamically adjust the preheating or cooling intensity as needed to ensure that the temperature of the surface of the stone plastic box board is uniform and stable within a preset range, so that when the stone plastic box board is formed, the overall surface temperature change is more stable.

[0049] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A forming device for producing stone plastic box board, comprising a calender frame (1), wherein the calender frame (1) is rotatably connected to three longitudinally arranged rotating shafts (1101), and the three rotating shafts (1101) are respectively fixedly connected to a preheating roller (1102), a guide roller (11) and a cooling roller (1103) from top to bottom, wherein: Openings are provided at both ends of the preheating roller (1102), the guide roller (11) and the cooling roller (1103); the rotating shaft (1101) in the preheating roller (1102) and the guide roller (11) is movably connected to a weight frame (13); the weight frame (13) is fixedly connected to heat-conducting tubes (12) symmetrically distributed along the weight frame (13); the symmetrically distributed heat-conducting tubes (12) are connected to each other; the weight frame (13) is fixedly connected to a circulating fan (14); an air duct (15) is connected between the heat-conducting tube (12) and the adjacent circulating fan (14).

2. The forming equipment for producing stone plastic box board according to claim 1 is characterized in that: The center of gravity of the eccentric weight frame (13) is biased downward.

3. The forming equipment for producing stone plastic box board according to claim 2 is characterized in that: It also includes a plurality of impellers (2), wherein the impellers (2) are fixedly connected to the adjacent rotating shaft (1101), the eccentric weight frame (13) is fixedly connected to a spray plate (21) symmetrically distributed along the eccentric weight frame (13), the spray plate (21) is connected to a plurality of flow guide tubes (22), the spray plate (21) is fixedly connected to an introduction plate (23), and the introduction plate (23) is connected to the adjacent flow guide tube (22).

4. The forming equipment for producing stone plastic box board according to claim 3 is characterized in that: It also includes a fixed frame (3) symmetrically distributed along the calender frame (1), the fixed frame (3) is fixedly connected to the calender frame (1), a spray tube (31) is fixedly connected inside the fixed frame (3), the calender frame (1) is fixedly connected to an air guide pipe (32) symmetrically distributed along the calender frame (1), the calender frame (1) is fixedly connected to a mounting frame (321) symmetrically distributed along the calender frame (1), the air guide pipe (32) and the mounting frame (321) are connected through an air pump (33), the air guide pipe (32) is connected to a longitudinally arranged suction block (34), and the suction block (34) extends into the adjacent preheating roller (1102), the guide roller (11) and the cooling roller (1103).

5. The forming equipment for producing stone plastic box board according to claim 4 is characterized in that: The nozzles of the spray barrel (31) are distributed circumferentially from top to bottom.

6. The forming equipment for producing stone plastic box board according to claim 5 is characterized in that: It also includes a support frame (4) arranged longitudinally along the calender frame (1), the support frame (4) is fixedly connected to the calender frame (1), the support frame (4) is threadedly connected to a screw rod (42), and the screw rod (42) is rotatably connected to a wiping plate (41).

7. The forming equipment for producing stone plastic box board according to claim 6 is characterized in that: It also comprises telescopic rods (43) symmetrically distributed along the support frame (4), and two ends of the telescopic rods (43) are respectively fixedly connected to the adjacent support frame (4) and the wiping plate (41).

8. The forming equipment for producing stone plastic box board according to claim 7 is characterized in that: The side surface of the wiping plate (41) is configured as a curved surface.

9. The forming equipment for producing stone plastic box board according to claim 8 is characterized in that: The wiping plate (41) has the same curvature as the preheating roller (1102), the guide roller (11), and the cooling roller (1103).

10. The forming equipment for producing stone plastic box board according to claim 9 is characterized in that: It also comprises a support plate (51) symmetrically distributed along the calender frame (1), the support plate (51) being fixedly connected to the calender frame (1), the support plate (51) being fixedly connected to a plurality of elastic telescopic components (52), two mutually contacting connecting blocks (53) being fixedly connected between the ends of adjacent elastic telescopic components (52), a fixed block (54) symmetrically distributed along the calender frame (1) being fixedly connected inside the calender frame (1) near the connecting block (53), a constant temperature tube (5) being rotatably connected between the connecting blocks (53) on the same horizontal line and between the fixing blocks (54) on the same horizontal line, and the constant temperature tube (5) on the fixing block (54) being rotatably connected to the calender frame (1).

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