Three-roller calendering equipment

Abstract

The utility model discloses three-roller press polish equipment which comprises a rack, a press roller mechanism and a heating device, the press roller mechanism and the heating device are installed on the rack, and the rack comprises a pair of wall plates oppositely arranged left and right and a plurality of cross beams connected between the pair of wall plates; the compression roller mechanism comprises an upper roller, a middle roller and a lower roller which are rotationally mounted between the pair of wallboards, and the upper roller, the middle roller and the lower roller are sequentially arranged from top to bottom and extend in the left-right direction; the heating device is arranged at the middle roller and comprises a reflecting plate covering the outer side of the middle roller and at least three temperature control units installed on the inner side of the reflecting plate, the reflecting plate is in an arc shape, the at least three temperature control units are sequentially arranged in the left-right direction, and each temperature control unit comprises a temperature controller, a temperature sensor and a plurality of heating pipes. The temperature controller is in signal connection with the temperature sensor and the plurality of heating pipes; the heating device is mounted at the middle roller and controls the heating temperature in a partitioned manner, so that a product extruded by the extrusion die is uniformly heated, and the thickness uniformity of a final finished product is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sheet production equipment, in particular to a three-roller calendering equipment. BACKGROUND

[0002] The current three-roller calendering equipment calenders the sheet extruded by the extrusion die, and the two sides of the sheet have been cooled during the process of passing through the middle roller, which causes uneven thickness in the forming process and wrinkles in the sheet. The overall heating of the middle roller makes the transverse temperature consistent, but when producing products of different widths, it cannot adapt to the difference in shrinkage rate of materials of different widths, further deepening the defect of uneven thickness of the product. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a three-roller calendering equipment with partitioned temperature control.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a three-roller calendering equipment, comprising:

[0005] a rack comprising a pair of wall plates arranged opposite to each other and a plurality of cross beams connected between the pair of wall plates;

[0006] a pressure roller mechanism comprising an upper roller, a middle roller and a lower roller rotatably installed between the pair of wall plates, the upper roller, the middle roller and the lower roller being arranged in order from top to bottom and extending along the left-right direction; and

[0007] a heating device installed between the pair of wall plates and arranged at the middle roller, the heating device comprising a reflecting plate covering the outer side of the middle roller and at least three temperature control units installed inside the reflecting plate, the reflecting plate being arc-shaped, the at least three temperature control units being arranged in order along the left-right direction, each temperature control unit comprising a temperature controller, a temperature sensor and a plurality of heating pipes, the temperature controller being signal connected with the temperature sensor and the plurality of heating pipes.

[0008] In the above technical scheme, further preferably, the reflecting plate is a mirror surface stainless steel plate.

[0009] In the above technical scheme, further preferably, the heating pipe is a quartz heating pipe.

[0010] In the above technical scheme, further preferably, the curvature of the reflecting plate is consistent with the curvature of the roller surface of the middle roller.

[0011] In the above technical scheme, further preferably, the plurality of heating pipes of each temperature control unit are arranged in a circumferential direction of the middle roller.

[0012] In the above technical solution, it is further preferred that the heating tubes of two adjacent temperature control units are arranged alternately in the circumferential direction of the middle roller.

[0013] In the above technical solution, a further preferred embodiment is that the heating device further includes a pair of adjusting components connected between the reflector and the frame. The pair of adjusting components are arranged opposite each other on the left and right. Each adjusting component includes a first fixed seat, a second fixed seat, a guide post, and a slider. The first fixed seat and the second fixed seat are mounted on the frame opposite each other front and back. The guide post is connected between the first fixed seat and the second fixed seat. The slider is sleeved on the guide post. The reflector is connected to the slider.

[0014] In the above technical solution, a linear bearing is further preferably installed between the slider and the guide post.

[0015] In the above technical solution, a further preferred embodiment is provided, wherein a first gap adjusting device is driven between the upper roller and the frame, the first gap adjusting device being used to adjust the distance between the upper roller and the middle roller, and a second gap adjusting device is driven between the lower roller and the frame, the second gap adjusting device being used to adjust the distance between the lower roller and the middle roller.

[0016] Compared with the prior art, this application achieves the following beneficial effects:

[0017] The three-roll calendering equipment of this application has a heating device installed at the middle roll. The heating device controls the heating temperature in sections in the transverse direction, so that the products extruded by the extrusion die are heated evenly, ensuring that the final product has uniform thickness and improving production efficiency and quality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a three-roll calendering device provided in an embodiment of this application;

[0019] Figure 2 for Figure 1 Front view of the three-roll calender in the picture;

[0020] Figure 3 For along Figure 2 A sectional view cut along line AA in the diagram;

[0021] Figure 4 for Figure 3 A three-dimensional structural diagram of the heating device in the diagram;

[0022] Figure 5 for Figure 4 Front view of the heating device in the middle;

[0023] Figure 6 is a perspective view of the adjusting assembly in Figure 4 ;

[0024] Figure 7 is a side view of the adjusting assembly in Figure 6 .

[0025] Wherein: 100, three-roller calendering equipment; 1, frame; 11, wallboard; 12, crossbeam; 2, compression roller mechanism; 21, upper roller; 22, middle roller; 23, lower roller; 24, first gap adjusting device; 25, second gap adjusting device; 26, driving motor; 27, roller temperature control system; 3, heating device; 31, reflecting plate; 32, temperature control unit; 321, temperature sensor; 322, heating pipe; 33, adjusting assembly; 331, first fixed seat; 332, second fixed seat; 333, guide column; 334, sliding block; 335, linear bearing; 4, moving mechanism; 41, guide rail; 42, moving wheel; 43, moving motor; 200, extrusion die. DETAILED DESCRIPTION

[0026] To describe the technical content, structural features, purposes and effects of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of various exemplary embodiments or implementations of the application. However, various exemplary embodiments can also be implemented without these specific details or in one or more equivalent arrangements. In addition, various exemplary embodiments can be different, but not necessarily exclusive. For example, the specific shape, structure and characteristics of an exemplary embodiment can be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0027] The embodiments of the application provide a three-roller calendering equipment, as shown in Figure 3 , the three-roller calendering equipment 100 is arranged at the rear side of the extrusion die 200 to calender and form the sheet material extruded by the extrusion die 200.

[0028] As shown in Figure 1 , the three-roller calendering equipment 100 comprises a frame 1 and a compression roller mechanism 2 and a heating device 3 installed on the frame 1. The frame 10 comprises a pair of wallboards 11 opposite to each other and a plurality of crossbeams 12 connected between the pair of wallboards 11, and the crossbeams 12 make the pair of wallboards 11 supported on the production line in parallel and stably.

[0029] As shown in Figures 1-3As shown, the pressure roller mechanism 2 includes an upper roller 21, a middle roller 22, and a lower roller 23 rotatably mounted between a pair of wall plates 11. The upper roller 21, middle roller 22, and lower roller 23 are arranged sequentially from top to bottom and all extend in the left-right direction. The extrusion nozzle of the extrusion die 200 is aligned between the upper roller 21 and the middle roller 22. The product extruded by the extrusion die 200 enters the three-roll calender 100 between the upper roller 21 and the middle roller 22, and then passes through the middle roller 22 and the lower roller 23 in sequence before exiting the three-roll calender 100.

[0030] like Figures 3-5 As shown, the heating device 3 is installed between a pair of wall panels 11 and arranged at the middle roller 22. The heating device 3 uniformly heats the product passing over the middle roller 22. The heating device 3 includes a reflector plate 31 covering the outside of the middle roller 22 and at least three temperature control units 32 installed inside the reflector plate 31. In this embodiment, three temperature control units 32 are installed inside the reflector plate 31, and the three temperature control units 32 are arranged sequentially from left to right. The space between the heating device 3 and the middle roller 22 is divided into three parallel sections from left to right: left, middle, and right. Each section corresponds to one temperature control unit 32. The temperature control unit 32 intelligently controls the temperature of the current section. When the product passes over the middle roller 22, it passes through the area between the heating device 3 and the middle roller 22. The three temperature control units 32 heat the left, middle, and right areas of the product respectively, ensuring that the product is heated uniformly in the lateral direction, resulting in a high flatness of the final product.

[0031] Each temperature control unit 32 includes a temperature controller, a temperature sensor 321, and multiple heating elements 322. The temperature controller is signal-connected to the temperature sensor 321 and the multiple heating elements 322. The temperature sensor 321 is used to detect the real-time temperature of the corresponding area. The heating elements 322 heat the corresponding area after being powered on. The temperature controller adjusts the temperature of the heating elements 322 based on the real-time temperature feedback from the temperature sensor 321, forming a closed-loop control until the temperature of the corresponding area reaches the preset temperature. When producing products of different widths and thicknesses, the three temperature control units 32 intelligently adjust the heating temperature of the corresponding area according to the actual production situation to ensure uniform product thickness.

[0032] The reflector plate 31 is arc-shaped and covers the rear side of the middle roller 22. The curvature of the reflector plate 31 is consistent with the curvature of the roller surface of the middle roller 22, so that the heating device 3 installed on the reflector plate 31 can uniformly heat the product that passes around the middle roller 22.

[0033] The reflector plate 31 is made of mirror stainless steel sheet. The inner side of the reflector plate 31 is a reflective surface, which can concentrate and reflect the heat of the heating device 3 onto the product between the heating device 3 and the middle roller 22, thereby improving the heat preservation effect and heating efficiency.

[0034] The plurality of heating pipes 322 of each temperature control unit 32 are arranged at intervals in the circumferential direction of the middle roller, so that the article can be uniformly heated in the circumferential direction of the middle roller 22. The heating pipes 322 of two adjacent temperature control units 32 are arranged alternately in the circumferential direction of the middle roller 22, so as to facilitate the installation of the heating pipes 322. In the embodiment of the present application, the heating pipes 322 are quartz heating pipes, which have the advantages of fast heating, small thermal inertia and long service life.

[0035] As shown in FIGS. Figure 4 , 6 , the heating device 3 further comprises a pair of adjusting assemblies 33 connected between the reflecting plate 31 and the rack 1. The pair of adjusting assemblies 33 are arranged opposite to each other, and each adjusting assembly 33 comprises a first fixed seat 331, a second fixed seat 332, a guide column 333 and a sliding block 334. The first fixed seat 331 and the second fixed seat 332 are installed opposite to each other on the rack 1, the guide column 333 is connected between the first fixed seat 331 and the second fixed seat 332, the sliding block 334 is sleeved on the guide column 333, and the reflecting plate 31 is connected with the sliding block 334. The reflecting plate 31 can move back and forth along the guide column 333 relative to the rack 1, so as to adjust the distance between the reflecting plate 31 and the roller surface of the middle roller 22, and the three-roll calendering device 100 can adapt to articles of different thicknesses. A linear bearing 335 is installed between the sliding block 334 and the guide column 333, which reduces the friction between the sliding block 334 and the guide column 333. In the embodiment of the present application, the operator can manually operate the adjusting assembly 33 to adjust the position of the reflecting plate 31. In other embodiments, a driving device connected with the sliding block 334 can be installed on the rack 1, and the sliding block 334 is driven to slide forward and backward by the driving device to realize the position adjustment of the reflecting plate 31.

[0036] As shown in FIGS. Figures 1-3 , the first gap adjusting device 24 is in transmission connection between the upper roller 21 and the rack 1. The upper roller 21 is movably installed on the rack 1 through a sliding assembly, and the first gap adjusting device 24 can drive the upper roller 21 to slide in the up-down direction, so as to adjust the distance between the upper roller 21 and the middle roller 22. The second gap adjusting device 25 is in transmission connection between the lower roller 23 and the rack 1. The lower roller 23 is also movably installed on the rack 1 through a sliding assembly, so as to adjust the distance between the lower roller 23 and the middle roller 22. The first gap adjusting device 24 and the second gap adjusting device 25 respectively adjust the upper roller 21 and the lower roller 23 in the up-down direction, so that the three-roll calendering device 100 can adapt to articles of different thicknesses.

[0037] The upper roller 21, the middle roller 22 and the lower roller 23 are respectively in transmission connection with a driving motor 26, rotate around the own axial line under the driving of the corresponding driving motor 26, and the three driving motors 26 are arranged on the same side of the rack 1. The other side of the rack 1 is further provided with a roller temperature control system 27 in communication with the upper roller 21, the middle roller 22 and the lower roller 23, the roller temperature control system 27 controls the roller surface temperature of each roller, so that each roller cylinder calendering product with appropriate temperature.

[0038] The bottom of the rack 1 is further provided with a moving mechanism 4, the moving mechanism 4 includes a guide rail 41 moving in the front and back direction, a plurality of moving wheels 42 rotatably installed on the bottom of the rack 1 and a moving motor 43, the plurality of moving wheels 42 cooperate with the guide rail 41, and the moving motor 43 drives the moving wheels 42 to rotate, so that the whole three-roller calendering equipment 100 can move in the front and back direction to approach and away from the extrusion die 200, which is convenient for cleaning and maintaining the extrusion die 200, saves time and effort.

[0039] The three-roller calendering equipment of the present application installs a heating device at the middle roller, the heating device controls the heating temperature in the transverse direction, so that the product extruded by the extrusion die is uniformly heated, ensures that the final product is uniformly thick and thin, improves the production efficiency and production quality.

[0040] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, the scope of protection of the present application is defined by the appended claims, the specification and its equivalents.

Claims

1. A three-roll calendering apparatus, characterized by, The utility model relates to a kind of heating device for calendering machine, including: Frame, including a pair of wallboards oppositely arranged left and right and a plurality of cross beams connected between the pair of wallboards; Roller mechanism, including upper roller, middle roller and lower roller rotatably installed between the pair of wallboards, the upper roller, middle roller and lower roller are sequentially arranged from top to bottom, and all extend along left and right direction; And Heating device, installed between the pair of wallboards and arranged at the middle roller, the heating device includes reflecting plate covering the outside of the middle roller and at least three temperature control units installed inside the reflecting plate, the reflecting plate is arc-shaped, the at least three temperature control units are sequentially arranged along left and right direction, each temperature control unit includes temperature controller, temperature sensor and a plurality of heating pipes, the temperature controller is signal connected with the temperature sensor and the plurality of heating pipes.

2. The three-roll calendering apparatus according to claim 1, wherein The reflecting plate is mirror stainless steel plate.

3. The three-roll calendering apparatus according to claim 1, wherein The heating pipe is quartz heating pipe.

4. The three-roll calendering apparatus according to claim 1, wherein The arc of the reflecting plate is consistent with the arc of the roller surface of the middle roller.

5. The three-roll calendering apparatus according to claim 4, wherein The plurality of heating pipes of each temperature control unit are arranged at intervals along the circumferential direction of the middle roller.

6. The three-roll calendering apparatus according to claim 5, wherein The heating pipes of adjacent two temperature control units are alternately arranged in the circumferential direction of the middle roller.

7. The three-roll calendering apparatus according to claim 1, wherein The heating device further includes a pair of adjusting assemblies connected between the reflecting plate and the frame, the pair of adjusting assemblies are oppositely arranged left and right, each adjusting assembly includes first fixed seat, second fixed seat, guide post and sliding block, the first fixed seat and the second fixed seat are oppositely installed on the frame, the guide post is connected between the first fixed seat and the second fixed seat, the sliding block is sleeved on the guide post, and the reflecting plate is connected with the sliding block.

8. The three-roll calendering apparatus according to claim 7, wherein Linear bearing is installed between the sliding block and the guide post.

9. The three-roll calendering apparatus according to claim 2, wherein First gap adjusting device is drivingly connected between the upper roller and the frame, the first gap adjusting device is used for adjusting the distance between the upper roller and the middle roller, and second gap adjusting device is drivingly connected between the lower roller and the frame, the second gap adjusting device is used for adjusting the distance between the lower roller and the middle roller.

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