Vertical continuous foaming equipment for polyolefin
阅读说明:本技术 一种立式聚烯烃连续发泡设备 (Vertical continuous foaming equipment for polyolefin ) 是由 李建华 于 2019-11-21 设计创作,主要内容包括:本发明涉及一种立式聚烯烃连续发泡设备,包括卧式传送装置、卧式预热装置、立式发泡装置及调厚收卷装置;卧式传送装置用于将聚烯烃片材传送给卧式预热装置,卧式预热装置用于对聚烯烃片材预热,立式发泡装置用于对已经预热的聚烯烃片材发泡,调厚收卷装置用于对已发泡的聚烯烃半成品进行压光收卷;所述立式发泡装置包括立式发泡炉,该立式发泡炉内从上至下依次划分过渡区、预发泡区及发泡区,每个区相对应的两侧分别设置电热管,在电热管与立式发泡炉内壁之间设置热风循环风机,其中,过渡区电热管的总功率小于预发泡区电热管的总功率,预发泡区电热管的总功率小于发泡区电热管的总功率。本发明的发泡设备,能确保产品生产效率和成品率。(The invention relates to vertical polyolefin continuous foaming equipment, which comprises a horizontal conveying device, a horizontal preheating device, a vertical foaming device and a thickness adjusting and winding device, wherein the horizontal conveying device is arranged on the vertical conveying device; the horizontal conveying device is used for conveying the polyolefin sheets to the horizontal preheating device, the horizontal preheating device is used for preheating the polyolefin sheets, the vertical foaming device is used for foaming the preheated polyolefin sheets, and the thickness adjusting and winding device is used for calendering and winding foamed polyolefin semi-finished products; the vertical foaming device comprises a vertical foaming furnace, wherein a transition area, a pre-foaming area and a foaming area are sequentially divided from top to bottom in the vertical foaming furnace, electric heating pipes are respectively arranged on two corresponding sides of each area, and a hot air circulating fan is arranged between each electric heating pipe and the inner wall of the vertical foaming furnace, wherein the total power of the electric heating pipes in the transition area is smaller than that of the electric heating pipes in the pre-foaming area, and the total power of the electric heating pipes in the pre-foaming area is smaller than that of the electric heating pipes in. The foaming equipment can ensure the production efficiency and the yield of products.)
1. The utility model provides a vertical polyolefin continuous foaming equipment, includes horizontal conveyer (1), horizontal preheating device (2), vertical foaming device (3), expansion device (4) and transfers thick coiling mechanism, characterized by: the horizontal conveying device (1) is used for conveying the polyolefin sheets to the horizontal preheating device (2), the horizontal preheating device (2) is used for preheating the polyolefin sheets, the vertical foaming device (3) is used for foaming the preheated polyolefin sheets, and the thickness-adjusting winding device is used for calendering and winding the foamed polyolefin semi-finished products; the vertical foaming device (3) comprises a vertical foaming furnace (31), a transition area (35), a pre-foaming area (36) and a foaming area (37) are sequentially arranged in the vertical foaming furnace (31) from top to bottom, electric heating tubes are respectively arranged on two corresponding sides of each area, a hot air circulating fan is arranged between each electric heating tube and the inner wall of the vertical foaming furnace (31), the total power of the electric heating tubes in the transition area is smaller than that of the electric heating tubes in the pre-foaming area, and the total power of the electric heating tubes in the pre-foaming area is smaller than that of the electric heating tubes in the.
2. The vertical polyolefin continuous foaming apparatus of claim 1, wherein: the upper end of the vertical foaming furnace (31) is provided with a vertical feed inlet (32), and the lower end is provided with a vertical discharge outlet (33).
3. A vertical polyolefin continuous foaming apparatus as claimed in claim 1 or 2, wherein: the horizontal preheating device (2) comprises a horizontal preheating furnace (22), wherein an upper row of electric heating tubes and a lower row of electric heating tubes are arranged in the horizontal preheating furnace (22) and used for heating the front surface and the back surface of the polyolefin sheet, and the total power of the upper row of electric heating tubes is smaller than that of the lower row of electric heating tubes.
4. A vertical polyolefin continuous foaming apparatus as claimed in claim 3, wherein: one end of the horizontal preheating furnace (22) is provided with an air inlet fan (21) for meeting the requirement of the temperature in the furnace (29) from bottom to high, and the other end is provided with a gas collecting hood (25) for discharging waste gas in the furnace (29).
5. The vertical polyolefin continuous foaming apparatus of claim 4, wherein: the horizontal conveying device (1) comprises a transmission mechanism (16) for conveying polyolefin sheets, a core-penetrating mesh belt (11) sleeved on the transmission mechanism (16) and a steel mesh (12) fixed on the core-penetrating mesh belt (11) and used for bearing the polyolefin sheets.
6. The vertical polyolefin continuous foaming apparatus of claim 5, wherein: the transmission mechanism (16) comprises a parallel guide rail (13) arranged in the horizontal preheating furnace (22), and a driving chain wheel (14) and a driven chain wheel (15) which are arranged at two ends of the parallel guide rail (13) and outside the horizontal preheating furnace (22).
7. The vertical polyolefin continuous foaming apparatus of claim 6, wherein: the unfolding device (4) is arranged below the foaming area (37) and comprises two expansion units (42) symmetrically arranged on the side wall (317) of the vertical foaming furnace (31) in a penetrating manner, each expansion unit (42) comprises a bottom plate (43) fixed on the outer wall of the vertical foaming furnace, a central shaft (44) which is arranged on the bottom plate (43) and can rotate, a transmission frame (49) connected with the central shaft (44) and a first unfolding pipe (47) and a second unfolding pipe (48), wherein one end of the first unfolding pipe is connected with the transmission frame (49) in a shaft mode, and the other end of the first unfolding pipe penetrates through the bottom plate (43) and enters the vertical foaming furnace (31).
8. The vertical polyolefin continuous foaming apparatus of claim 7, wherein: the first exhibition pipe (47) is shorter than the second exhibition pipe (48), and the first exhibition pipe (47) and the second exhibition pipe (48) are respectively connected with the second driving mechanism (46).
9. The vertical polyolefin continuous foaming apparatus of claim 8, wherein: the thickness-adjusting winding device comprises a thickness-adjusting device (5), the thickness-adjusting device (5) comprises a front calender (51) and a back calender (52), the front calender (51) comprises a first frame (53), and a first transmission steering mechanism (54), a first heating mechanism (55) and a front calender mechanism (56) which are sequentially arranged on the first frame (53) from top to bottom; the reverse calender (52) comprises a second machine frame (515), and a reverse calendering mechanism (518), a heating mechanism (517) and a second transmission steering mechanism (516) which are sequentially arranged on the second machine frame (515) from top to bottom.
10. The vertical polyolefin continuous foaming apparatus of claim 9, wherein: the thickness-adjusting winding device comprises a winding device (6), wherein the winding device (6) comprises a winding rack (61), a turnover mechanism (64) which is arranged on the winding rack (61) and can be turned over, and a first winding shaft (65) and a second winding shaft (66) which are arranged on the turnover mechanism (64) and can rotate.
Technical Field
The invention belongs to the field of material manufacturing, and particularly relates to vertical polyolefin continuous foaming equipment which is particularly suitable for producing ultrathin polyolefin foam materials.
Background
The polyolefin foam material has excellent physical, chemical and mechanical properties, and can be widely applied to the fields of automobiles, sports, building engineering, electronics, packaging, transportation and the like. The existing polyolefin foaming equipment comprises a horizontal conveying device, a horizontal preheating device, a vertical foaming device and an auxiliary machine device which are arranged in sequence, and the working process is as follows: firstly, a horizontal preheating device preheats a polyolefin sheet, the horizontal conveying device conveys the preheated polyolefin sheet to a vertical foaming device, the polyolefin sheet outputs a semi-finished product of the foaming sheet in the vertical foaming device, and then the polyolefin foaming sheet is wound by an auxiliary device. However, the existing polyolefin vertical foaming equipment generally adopts a mode of heating by directly irradiating and heating by a heating pipe, so that the temperature in the furnace is unstable, the temperature difference of each area is extremely large, the thickness of a foaming product is uneven, the width of the foaming product is unequal, a plurality of unqualified products are produced, and the production efficiency and the qualification rate are low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides vertical polyolefin continuous foaming equipment which can improve the production efficiency and the qualification rate of products, has a simple structure and is convenient to install and maintain.
In order to achieve the above purposes, the invention adopts the technical scheme that: the vertical type polyolefin continuous foaming equipment comprises a horizontal type conveying device, a horizontal type preheating device, a vertical type foaming device, an unfolding device and a thickness adjusting and winding device, wherein the horizontal type conveying device is used for conveying polyolefin sheets to the horizontal type preheating device; the vertical foaming device comprises a vertical foaming furnace, wherein a transition area, a pre-foaming area and a foaming area are sequentially arranged in the vertical foaming furnace from top to bottom, electric heating pipes are respectively arranged on two corresponding sides of each area, a hot air circulating fan is arranged between each electric heating pipe and the inner wall of the vertical foaming furnace, the total power of the electric heating pipes in the transition area is smaller than that of the electric heating pipes in the pre-foaming area, and the total power of the electric heating pipes in the pre-foaming area is smaller than that of the electric heating pipes.
Further, as above-mentioned a vertical polyolefin continuous foaming equipment, the upper end of vertical foaming furnace is equipped with vertical feed inlet, and the lower extreme is equipped with vertical discharge gate.
Further, according to the above vertical polyolefin continuous foaming equipment, the horizontal preheating device comprises a horizontal preheating furnace, wherein an upper row of electric heating tubes and a lower row of electric heating tubes are arranged in the horizontal preheating furnace and used for heating the front surface and the back surface of the polyolefin sheet, and the total power of the upper row of electric heating tubes is less than that of the lower row of electric heating tubes.
Furthermore, according to the vertical polyolefin continuous foaming equipment, one end of the horizontal preheating furnace is provided with the air inlet fan used for meeting the requirement of the temperature in the furnace from bottom to high, and the other end of the horizontal preheating furnace is provided with the gas collecting hood used for discharging waste gas in the furnace.
Further, according to the above vertical polyolefin continuous foaming device, the horizontal conveying device comprises a transmission mechanism for conveying polyolefin sheets, a core-penetrating mesh belt sleeved on the transmission mechanism, and a steel mesh for bearing the polyolefin sheets on the fixed core-penetrating mesh belt.
Further, according to the above vertical polyolefin continuous foaming device, the transmission mechanism comprises a parallel guide rail arranged in the horizontal preheating furnace, and a driving sprocket and a driven sprocket which are arranged at two ends of the parallel guide rail and outside the horizontal preheating furnace.
Furthermore, as mentioned above, the unfolding device is disposed below the foaming area and includes two expansion units symmetrically disposed on the sidewall of the vertical foaming furnace, each expansion unit includes a bottom plate fixed on the sidewall of the vertical foaming furnace, a central shaft mounted on the bottom plate and capable of rotating, a transmission frame connected with the central shaft, and a first exhibition pipe and a second exhibition pipe, one end of the first exhibition pipe and one end of the second exhibition pipe are coupled with the transmission frame, and the other end of the first exhibition pipe and the other end of the second exhibition pipe penetrate through the bottom plate and enter the vertical foaming furnace.
Further, according to the vertical polyolefin continuous foaming device, the first exhibit pipe is shorter than the second exhibit pipe, and the first exhibit pipe and the second exhibit pipe are respectively connected with the second driving mechanism.
Further, as for the vertical polyolefin continuous foaming equipment, the thickness adjusting and winding device comprises a thickness adjusting device, the thickness adjusting device comprises a front calender and a back calender, the front calender comprises a first frame, and a first transmission steering mechanism, a first heating mechanism and a front calendering mechanism which are sequentially arranged on the first frame from top to bottom; the reverse side calender comprises a second frame, and a reverse side calendering mechanism, a heating mechanism and a second transmission steering mechanism which are sequentially arranged on the second frame from top to bottom.
Further, as above-mentioned a vertical polyolefin continuous foaming equipment, the rolling device that increases thickness includes the coiling mechanism, and this coiling mechanism includes the rolling frame, sets up the tilting mechanism that can overturn in the rolling frame and sets up first rolling axle and the second rolling axle that can rotate on tilting mechanism.
The invention has the beneficial technical effects that:
(1) according to the vertical foaming device, the transition area, the pre-foaming area and the foaming area are sequentially arranged in the furnace, and the electric heating pipe and the hot air circulating fan are arranged in each area, wherein the total power of the electric heating pipes in the transition area, the pre-foaming area and the foaming area is ensured to be sequentially increased, so that the temperature distribution of a hot air field in the vertical foaming furnace is more uniform, the temperature difference of the same section of the same temperature area is controlled within the range of +/-3 ℃, the thickness of foamed polyolefin sheets is ensured to be consistent, the foam holes are fine and uniform, the width size is not deviated, and the production efficiency is greatly improved.
(2) According to the horizontal conveying device, the core-penetrating mesh belt is arranged on the transmission mechanism, and the steel mesh is attached to the outer surface of the transmission mechanism, so that the steel mesh only bears the weight of a product during working, the service life of the steel mesh is greatly prolonged by 6-8 times compared with that of the steel mesh in the existing equipment, the phenomenon of S-shaped edges of the product is completely avoided, and the production efficiency is improved;
(3) according to the unfolding device, the central shaft is fixedly arranged on the bottom plate, the central shaft is connected with the transmission frame through the two bearings, the transmission frame integrally swings around the central shaft, the central shaft is static, the integral swing amplitude of the expanding unit is small, the balance stability of the exhibit device is enhanced, and the expanding effect is good.
(4) According to the thickness adjusting device, the cylinder shaft stroke adjusting mechanism is arranged, and the cylinder shaft stroke adjusting mechanism at the tail part of the cylinder is rotated by hand to control the extending length of the cylinder shaft, so that the gap between the active thickness adjusting device roller and the passive thickness adjusting device roller can be conveniently and quickly adjusted; in addition, when the cylinder shaft stroke adjusting mechanism is a sleeve, an internal thread is arranged in the sleeve, external threads are arranged at the cylinder shaft tail end of the first passive thickness adjusting device cylinder and the cylinder shaft tail end of the second passive thickness adjusting device cylinder, and the cylinder shaft tail end of the first passive thickness adjusting device cylinder and the cylinder shaft tail end of the second passive thickness adjusting device cylinder are in threaded connection with the sleeve, so that the operation convenience is further improved, the adjusting time can be saved, and the adjusting precision is improved.
(5) According to the winding device, one end of the first winding shaft and one end of the second winding shaft are both fixed on the turnover mechanism, the other end of the first winding shaft and the other end of the second winding shaft are both suspended, and after winding is completed, only one worker needs to hold a coiled material and slightly pull out the coiled material from the suspended end of the first winding shaft or the suspended end of the second winding shaft, so that the coil is convenient to unload, time and labor are saved, and labor intensity is low.
Drawings
FIG. 1 is a schematic view of the structure of a vertical polyolefin continuous foaming apparatus according to the present invention.
FIG. 2 is a schematic view showing the structural connection between the horizontal transfer device and the horizontal preheating device according to the present invention.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Fig. 4 is a schematic structural view of the core-piercing belt of fig. 2.
Fig. 5 is a schematic structural view of a steel net.
Fig. 6 is a schematic structural view of the vertical foaming device of the present invention.
FIG. 7 is a schematic view of the installation of the spreading device and the vertical foaming device of the present invention.
Fig. 8 is a sectional view of the expanding unit of fig. 7.
Fig. 9 is a schematic structural diagram of the thickness adjusting device of the present invention.
Fig. 10 is a side view of a face calender.
Fig. 11 is a top view of the face calender.
Fig. 12 is a side view of a reverse calender.
Fig. 13 is a top view of the reverse calender.
Fig. 14 is a front view of the winding device of the present invention.
Fig. 15 is a side view of the winding device of the present invention.
In the figure:
1-horizontal conveyer
11-core-penetrating mesh belt 12-steel net 13-parallel guide rail 14-driving chain wheel 15-driven chain wheel 16-transmission mechanism 17-motor
2-horizontal preheating device
21-air inlet fan 22-horizontal preheating furnace 23-air inlet 24-air outlet 25-gas collecting hood 26-air outlet 27-horizontal feed inlet 28-horizontal discharge outlet 29-furnace body inner cavity 210-air inlet knife 211-fourth heating pipe 212-fifth heating pipe
3-vertical foaming device
31-vertical foaming furnace 32-vertical feeding hole 33-vertical discharging hole 34-furnace body inner cavity 35-transition zone 36-prefoaming zone 37-foaming zone 38-first electric heating tube 39-second electric heating tube 310-third electric heating tube 311-first hot air circulating fan 312-second hot air circulating fan 313-third hot
4-deployment device
41-exhibition device 42-expanding unit 43-bottom plate 44-central shaft 45-first driving mechanism 46-second driving mechanism 47-first exhibition tube 48-second exhibition tube 49-transmission frame 410-bearing
5-thickness adjusting device
51-a front side calender 52-a back side calender 53-a first frame 54-a first transmission steering mechanism 55-a first heating mechanism 56-a front side calender 57-a first active calender unit 58-a first passive calender unit 59-an active calender roll 510-an active calender motor 511-a passive calender roll 512-a first passive calender cylinder 513-a second passive calender cylinder 514-a cylinder shaft stroke adjusting mechanism 515-a second frame 516-a second transmission steering mechanism 517-a second heating mechanism 518-a back side calender mechanism
6-winding device
61-rolling rack 62-power mechanism 63-speed reducing mechanism 64-turnover mechanism 65-first rolling shaft 66-second rolling shaft 67-first motor 68-second motor
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the vertical continuous polyolefin foaming equipment provided by the invention comprises a
As shown in fig. 2 to 5, the
When the horizontal conveying device works, the
As shown in fig. 2, the
According to the horizontal preheating device, the
As shown in FIG. 6, the
According to the vertical foaming device, the temperature is uniformly controlled in different areas, when the vertical foaming device works, the electric heating tubes in all the areas are uniformly irradiated and heated, and the hot air circulating fan blows hot air into the inner cavity of the furnace body, so that a hot air field with uniform temperature distribution is formed in the vertical foaming furnace; meanwhile, the total power of the electric heating tubes of the transition area, the pre-foaming area and the foaming area in the vertical foaming furnace is sequentially increased, namely the total power is higher or lower under the irradiation heating power in the vertical foaming furnace, hot air flows upwards, so that the temperature distribution of a hot air field in the vertical foaming furnace is more uniform, the temperature difference of the same section of the same temperature area is controlled within the range of +/-3 ℃, the thickness of outlet sheets is consistent, the foam holes are fine and uniform, the width size is free from deviation, and the production efficiency is greatly improved.
As shown in fig. 7, the spreading
According to the expanding unit of the exhibit device, the central shaft is fixedly arranged on the bottom plate and is connected with the transmission frame through the two bearings, the transmission frame integrally swings around the central shaft, and the central shaft is in a static state, so that the integral swinging amplitude of the expanding unit is small, the balance stability of the exhibit device is enhanced, and the expanding effect is good. When the central shaft is connected with the transmission frame through two common bearings, the transmission frame is not in contact with the furnace body of the vertical foaming furnace, the temperature of the transmission frame is low, and the common bearings can bear the temperature of the vertical foaming furnace, so that the cost is saved. When the surfaces of the first exhibition pipe and the second exhibition pipe are coated with anti-sticking layers, on one hand, volatile matters can be prevented from being stuck to the first exhibition pipe and the second exhibition pipe when the foaming agent is foamed, and on the other hand, frequent cleaning of the first exhibition pipe and the second exhibition pipe is avoided. The anti-sticking layer is a nano coating, and when the thickness is about 35 mu m, the anti-sticking layer can be ensured to be firm and not fall off, and the reliability is high.
As shown in fig. 9, the
According to the thickness adjusting device, the cylinder shaft stroke adjusting mechanisms are arranged at the tail end of the cylinder shaft of the first passive calendering cylinder and the tail end of the cylinder shaft of the second passive calendering cylinder, the cylinder shaft stroke adjusting mechanisms are fixedly connected with the cylinder shafts of the passive calendering cylinders, the extending length of the cylinder shafts is controlled by rotating the cylinder shaft stroke adjusting mechanisms at the tail parts of the passive calendering cylinders through an operator, so that a gap between the active calendering roller and the passive calendering roller can be conveniently and quickly adjusted, after the adjustment is completed, the active calendering roller and the passive calendering roller are opened and closed for multiple times, the gap is not changed, the active calendering roller and the passive calendering roller are ensured to be parallel, and the effect of the thickness adjusting device is good. When cylinder axle stroke guiding mechanism was the sleeve, was provided with the internal thread in the sleeve, and the cylinder axle tail end of first passive press polish cylinder and the cylinder axle tail end of the passive press polish cylinder of second all are provided with the external screw thread, and the cylinder axle tail end of first passive press polish cylinder and the cylinder axle tail end of the passive press polish cylinder of second all with sleeve threaded connection, from this, further increased its simple operation nature, can save adjustment time, improve the adjustment precision.
As shown in fig. 14 and 15, the winding
According to the winding device, the first winding shaft and the second winding shaft respectively comprise the rotating shaft and the air expansion shaft, the air expansion shaft is sleeved on the rotating shaft, when the rotating shaft is fixedly connected with the turnover mechanism, only one worker needs to discharge compressed air in the air expansion shaft when a coil is unwound, the coiled material is held and is pulled out from the suspended end of the first winding shaft or the suspended end of the second winding shaft, the coil is conveniently unwound, and time and labor are saved.
The working principle of the polyolefin foaming equipment is as follows:
in the horizontal conveying and horizontal preheating stages, before the polyolefin sheets enter the horizontal conveying
The vertical polyolefin continuous foaming device of the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can derive other embodiments according to the technical solution of the present invention, and the same shall fall into the technical innovation scope of the present invention.
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