Quenching equipment for sheet production line

Abstract

The utility model discloses quenching equipment for a sheet production line, which is positioned on the rear side of an extrusion die, is arranged adjacent to an extrusion opening of the extrusion die and is provided with a conveying channel for a sheet extruded from the extrusion opening to move from front to back. The quenching equipment comprises an upper roller assembly located on the upper side of the conveying channel, a lower roller assembly located on the lower side of the conveying channel, a transmission assembly and a transition assembly, the upper roller assembly comprises an upper roller and an air cylinder, the upper roller extends in the left-right direction, and the air cylinder is in transmission connection with the upper roller to drive the upper roller to move in the up-down direction; the lower roller assembly comprises a lower roller arranged opposite to the upper roller up and down and a driving motor for driving the lower roller to rotate, and the lower roller is parallel to the upper roller; the transmission assembly is in transmission connection between the upper roller and the lower roller so as to synchronize the linear speed of the upper roller and the linear speed of the lower roller. The transition assembly comprises a transition roller parallel to the upper roller, and the transition roller is arranged on the front side of the upper roller in the mode that the distance between the transition roller and the extrusion opening is adjustable.

Description

Technical Field

[0001] The present application relates to the technical field of plastic product molding equipment, and in particular to a rapid cooling device for a sheet production line. Background Art

[0002] In the sheet production process, after the material is extruded from the extrusion port of the extrusion die in sheet form, it needs to be immediately transported to the three-roll calender for pressing and forming. In order to prevent the extrusion die from damaging the rollers of the three-roll calender, there is a distance between the extrusion port and the rollers of the three-roll calender. Since the pressure and temperature change instantly when the sheet is extruded from the extrusion port, the extruded sheet will produce unstable phenomena such as micro-bubbling, which will affect the subsequent shaping and size control. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a rapid cooling device for a sheet production line.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a quenching device for a sheet production line, located at the rear side of an extrusion die and arranged adjacent to an extrusion port of the extrusion die, the quenching device having a conveying channel for the sheet extruded from the extrusion port to move from front to back, the quenching device comprising:

[0005] An upper roller assembly is located on the upper side of the conveying channel, and the upper roller assembly includes an upper roller and a cylinder. The upper roller extends in the left-right direction, and the cylinder is connected to the upper roller to drive the upper roller to move in the up-down direction.

[0006] A lower roller assembly is located at the lower side of the conveying channel, the lower roller assembly comprises a lower roller arranged opposite to the upper roller and a driving motor connected to the lower roller, the lower roller is parallel to the upper roller, and the driving motor is used to drive the lower roller to rotate around its own axis;

[0007] A transmission assembly, which is transmission-connected between the upper roller and the lower roller to synchronize the linear speeds of the upper roller and the lower roller; and

[0008] The transition assembly comprises a transition roller parallel to the upper roller, and the distance between the transition roller and the extrusion port is adjustable and arranged on the front side of the upper roller.

[0009] In the above technical solution, it is further preferred that the quenching equipment also includes a frame, the upper roller assembly, the lower roller assembly, the transmission assembly and the transition assembly are all installed on the frame, the frame includes a pair of wall panels arranged opposite to each other on the left and right, and the upper roller, the lower roller and the transition roller can be rotatably arranged around their own axis lines between the pair of wall panels.

[0010] In the above technical solution, it is further preferred that the transmission assembly is arranged on the outside of the pair of wall panels and avoids the driving motor, and the transmission assembly includes a first gear coaxially arranged with the upper roller, a second gear coaxially arranged with the lower roller, a third gear meshing with the first gear, and a fourth gear meshing with the second gear, and a connecting block is connected between the third gear and the fourth gear to keep the third gear and the fourth gear meshing.

[0011] In the above technical solution, it is further preferred that the first gear, the second gear, the third gear and the fourth gear have the same outer diameter and the same number of teeth.

[0012] In the above technical solution, it is further preferred that the diameter of the upper roller is equal to the diameter of the lower roller.

[0013] In the above technical solution, it is further preferred that the transition assembly also includes a pair of adjustment mechanisms arranged opposite to each other on the left and right, each of the adjustment mechanisms is connected between the transition roller and the wall panel, and each of the adjustment mechanisms is constructed to drive the transition roller to approach and move away from the extrusion port along a straight line direction, and the straight line direction is perpendicular to the axis of the transition roller.

[0014] In the above technical solution, it is further preferred that each of the adjustment mechanisms includes an adjustment screw transmission-connected to the end of the transition roller and a threaded sleeve connected to the wall panel, the adjustment screw is passed through the threaded sleeve and threadedly connected to the threaded sleeve, and the adjustment screw and the threaded sleeve both extend along the straight line direction.

[0015] In the above technical solution, it is further preferred that the diameter of the transition roller is smaller than the diameter of the upper roller.

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

[0017] The present application has a simple structure and is easy to operate. The rapid cooling equipment is arranged close to the extrusion port of the extrusion die. When the sheet is extruded from the extrusion die, the sheet is immediately rapidly cooled so that the surface of the sheet is quickly crusted, and the internal pressure of the sheet is stabilized, which is beneficial to the subsequent shaping and size adjustment, and improves the molding quality of the sheet. Brief Description of the Drawings

[0018] Figure 1 The front view of a quenching device provided by an embodiment of the present application;

[0019] Figure 2 is Figure 1 the side view of the quenching device in

[0020] Figure 3 is Figure 1 the schematic structural diagram of the transmission assembly in

[0021] Wherein: 100, quenching device; 1, conveying channel; 2, upper roller assembly; 21, upper roller; 22, cylinder; 23, sliding bearing assembly; 3, lower roller assembly; 31, lower roller; 32, driving motor; 33, fixed bearing assembly; 4, transmission assembly; 41, first gear; 42, second gear; 43, third gear; 44, fourth gear; 45, first connecting block; 46, second connecting block; 47, third connecting block; 5, transition assembly; 51, transition roller; 52, adjusting mechanism; 521, adjusting screw; 522, threaded sleeve; 6, frame; 61, wall panel. Detailed Description of the Embodiments

[0022] In order to describe in detail the technical content, structural features, achieved objectives and effects of the application, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. 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, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments can be used or implemented in another exemplary embodiment.

[0023] An embodiment of the present application provides a quenching device for a sheet production line. The quenching device is located behind the extrusion die and adjacent to the extrusion outlet of the extrusion die, which is conducive to the rapid skinning of the product extruded from the extrusion outlet and preliminary cooling before entering the calender.

[0024] As Figure 1 shown, the quenching device 100 includes a conveying channel 1 for the sheet extruded from the extrusion outlet to move from front to back, an upper roller assembly 2 located on the upper side of the conveying channel 1, a lower roller assembly 3 located on the lower side of the conveying channel 1, a transmission assembly 4 connected to the upper roller assembly 2 and the lower roller assembly 3, and a transition assembly 5 located in front of the upper roller assembly 2.

[0025] As Figure 1 , 2 shown, the upper roll assembly 2 includes an upper roll cylinder 21 and a cylinder 22. The upper roll cylinder 21 extends in the left - right direction, and the cylinder 22 is drivingly connected to the upper roll cylinder 21 to drive the upper roll cylinder 21 to move in the up - down direction.

[0026] The lower roll assembly 3 includes a lower roll cylinder 31 disposed opposite to the upper roll cylinder 21 in the up - down direction and a driving motor 32 drivingly connected to the lower roll cylinder 31. The lower roll cylinder 31 is parallel to the upper roll cylinder 21, and the driving motor 32 is used to drive the lower roll cylinder 31 to rotate about its own axis.

[0027] The rapid cooling device 100 further includes a frame 6. The upper roll assembly 2, the lower roll assembly 3, the transmission assembly 4, and the transition assembly 5 are all mounted on the frame 6. The frame 6 includes a pair of wall panels 61 disposed opposite to each other in the left - right direction. The upper roll cylinder 21 and the lower roll cylinder 31 are both rotatably disposed about their own axes between the pair of wall panels 61.

[0028] At the left and right ends of the upper roll cylinder 21, a sliding bearing assembly 23 is respectively provided. The pair of sliding bearing assemblies 23 are respectively in sliding fit with the corresponding side wall panel 61, and a cylinder 22 is respectively configured. The cylinder 22 drives the sliding bearing assembly 23 on the corresponding side to slide up and down relative to the wall panel 61. The upper roll cylinder 21 is disposed on the frame 6 through the pair of sliding bearing assemblies 23 so as to be both rotatable about its own axis and movable up and down.

[0029] At the left and right ends of the lower roll cylinder 31, a fixed bearing assembly 33 is respectively provided. The pair of fixed bearing assemblies 33 are respectively fixedly connected to the corresponding side wall panel 61, and the fixed bearing assembly 33 is disposed opposite to the sliding bearing assembly 23 on the corresponding side in the up - down direction. The lower roll cylinder 31 is rotatably disposed on the frame 6 through the pair of fixed bearing assemblies 33 about its own axis.

[0030] The transmission assembly 4 is drivingly connected between the upper roll cylinder 21 and the lower roll cylinder 31 to synchronize the linear speeds of the upper roll cylinder 21 and the lower roll cylinder 31. The transmission assembly 4 makes both the upper roll cylinder 21 and the lower roll cylinder 31 rotate actively, and the linear speeds of the upper roll cylinder 21 and the lower roll cylinder 31 match the extrusion speed of the extrusion die, thereby reducing the friction on the surface of the product, improving the surface finish of the product, and preventing the product from being stretched and deformed.

[0031] As Figure 1-3As shown, the transmission assembly 4 is located outside a pair of wall panels 61, and is on the outside of the wall panels 61 on different sides from the drive motor 32, so as to avoid interfering with each other in work and installation between the transmission assembly 4 and the drive motor 32. The transmission assembly 4 includes a first gear 41 coaxially arranged with the upper roller 21, a second gear 42 coaxially arranged with the lower roller 31, a third gear 43 that remains meshed with the first gear 41, and a fourth gear 44 that remains meshed with the second gear 42. A first connecting block 45 that keeps the third gear 43 and the fourth gear 44 meshed with each other is connected between the third gear 43 and the fourth gear 44. The first connecting block 45 enables the third gear 43 and the fourth gear 44 to always remain meshed with each other when moving relative to each other. A second connecting block 46 is also connected between the first gear 41 and the third gear 43. When the first gear 41 rotates and moves up and down with the upper roller 21, the second connecting block 46 enables the third gear 43 to move with the first gear 41 and always remain meshed with the first gear 41. A third connecting block 47 is also connected between the second gear 42 and the fourth gear 44. The first connecting block 45 enables the fourth gear 44 to move with the third gear 43, and the third connecting block 47 enables the second gear 42 to always remain meshed with the fourth gear 44 when the fourth gear 44 moves.

[0032] During the up-and-down adjustment process of the upper roller 21, the first gear 41, the second gear 42, the third gear 43, and the fourth gear 44 that always remain meshed transmit the rotation of the lower roller 31 to the upper roller 21, so that the upper roller 21 and the lower roller 31 can rotate synchronously. The outer diameters of the first gear 41, the second gear 42, the third gear 43, and the fourth gear 44 are the same, and the number of teeth is the same, and the diameter of the upper roller 21 is equal to the diameter of the lower roller 31, so that the upper roller 21 and the lower roller 31 rotate actively at the same linear speed.

[0033] Cooling water flows through the upper roller 21 and the lower roller 31 to adjust the roller surface temperature. The upper roller 21 and the lower roller 31 traction the sheet at the extrusion outlet of the extrusion die and are in contact with the sheet, thereby quickly reducing the surface temperature of the sheet, enabling the surface of the sheet to rapidly skin after being extruded from the extrusion die, stabilizing the pressure inside the sheet, achieving preliminary cooling and shaping, and being conducive to subsequent size adjustment and shaping.

[0034] The transition assembly 5 includes a transition roller 51 parallel to the upper roller 21. The transition roller 51 is arranged on the front side of the upper roller 21 with an adjustable distance from the extrusion outlet. The diameter of the transition roller 51 is smaller than the diameter of the upper roller 21. The transition roller 51 is close to the sheet extruded from the extrusion outlet on the front side of the upper roller 21, adjusts the angle of the sheet output from the extrusion outlet, and enables the sheet to be smoothly conveyed between the upper roller 21 and the lower roller 31.

[0035] The transition component 5 further includes a pair of adjusting mechanisms 52 arranged oppositely left and right. Each adjusting mechanism 52 is connected between the transition roller 51 and the wall panel 61, so that the transition roller 51 can not only rotate around its own axis, but also be arranged between a pair of wall panels 61 so as to approach and move away from the extrusion outlet along a straight line direction. The straight line direction is perpendicular to the axis of the transition roller 51.

[0036] Each adjusting mechanism 52 includes an adjusting screw rod 521 drivingly connected to the end of the transition roller 51 and a threaded sleeve 522 connected to the wall panel 61. The adjusting screw rod 521 is inserted into the threaded sleeve 522 and is threadedly connected to the threaded sleeve 522. Both the adjusting screw rod 521 and the threaded sleeve 522 extend along a straight line direction. When the adjusting screw rod 521 rotates around its own axis, the adjusting screw rod 521 can drive the transition roller 51 to move back and forth along a straight line direction, thereby adjusting the distance between the transition roller 51 and the extrusion outlet.

[0037] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements. The scope of protection required by the present application is defined by the appended claims, the specification and their equivalents.

Claims

1. A rapid cooling device for a sheet production line, which is located at the rear side of an extrusion die and is arranged adjacent to the extrusion outlet of the extrusion die. The rapid cooling device has a conveying channel for the sheet extruded from the extrusion outlet to move from front to back, and is characterized in that The described quenching device includes: An upper roll assembly located on the upper side of the conveying channel. The upper roll assembly includes an upper roll cylinder and a cylinder. The upper roll cylinder extends in the left - right direction, and the cylinder is in driving connection with the upper roll cylinder to drive the upper roll cylinder to move in the up - down direction; A lower roll assembly located on the lower side of the conveying channel. The lower roll assembly includes a lower roll cylinder disposed opposite to the upper roll cylinder up - and - down and a driving motor in driving connection with the lower roll cylinder. The lower roll cylinder is parallel to the upper roll cylinder, and the driving motor is used to drive the lower roll cylinder to rotate around its own axis; A transmission assembly in driving connection between the upper roll cylinder and the lower roll cylinder to synchronize the linear speeds of the upper roll cylinder and the lower roll cylinder; and A transition assembly including a transition roll parallel to the upper roll cylinder. The transition roll is disposed on the front side of the upper roll cylinder with an adjustable distance from the extrusion outlet.

2. The quenching device according to claim 1, wherein The quenching device further includes a frame. The upper roll assembly, the lower roll assembly, the transmission assembly, and the transition assembly are all installed on the frame. The frame includes a pair of wall panels disposed opposite to each other left - and - right. The upper roll cylinder, the lower roll cylinder, and the transition roll are all rotatably disposed between the pair of wall panels around their own axes.

3. The quenching device according to claim 2, characterized in that, The transmission assembly is arranged outside the pair of wall panels and is arranged to avoid the driving motor. The transmission assembly includes a first gear coaxially arranged with the upper roll cylinder, a second gear coaxially arranged with the lower roll cylinder, a third gear kept meshing with the first gear, and a fourth gear kept meshing with the second gear. A connecting block for keeping the third gear and the fourth gear meshing is connected between the third gear and the fourth gear.

4. The quenching device according to claim 3, characterized in that, The outer diameters of the first gear, the second gear, the third gear, and the fourth gear are the same, and the number of teeth is the same.

5. The quenching device according to claim 4, characterized in that, The diameter of the upper roll cylinder is equal to the diameter of the lower roll cylinder.

6. The quenching device according to claim 2, characterized in that, The transition assembly further includes a pair of adjusting mechanisms disposed opposite to each other left - and - right. Each adjusting mechanism is connected between the transition roll and the wall panel. Each adjusting mechanism is configured to drive the transition roll to approach and move away from the extrusion outlet in a straight - line direction, and the straight - line direction is perpendicular to the axis of the transition roll.

7. The quenching device according to claim 6, characterized in that, Each adjusting mechanism includes an adjusting screw threadedly connected to the end of the transition roll and a threaded sleeve connected to the wall panel. The adjusting screw is inserted into the threaded sleeve and is in threaded connection with the threaded sleeve. The adjusting screw and the threaded sleeve both extend in the straight - line direction.

8. The quenching device according to claim 1, characterized in that The diameter of the transition roll is smaller than the diameter of the upper roll cylinder.

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