Three-roller calendering equipment
The three-roll calendering device integrates an urgent stop protection system to address safety hazards by immediately stopping and separating rollers, enhancing operational safety.
Patent Information
- Application Number
- CN202422368606.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-27
AI Technical Summary
During the startup production process of the three-roll calendering equipment, the operator has the risk of tools or limbs being wound into the rotating roller when adjusting the mold, resulting in safety hazards.
A three-roll calendering device including an emergency stop protection mechanism is designed. The mechanism is connected to the roller drive motor and the elevator through an emergency stop switch, and can immediately stop the roller rotation when the emergency stop switch is triggered, and open the pressed roller to ensure safety.
It quickly stops the roller rotation and opens and pressing in an emergency, improves the safety of the production process and avoids personnel injury.
Smart Images
Figure CN223099772U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of plastic product processing equipment, and in particular to a three-roller calendering device. Background Art
[0002] The rollers of the three-roll calendering equipment are important components in the production process of sheet and film products. During the startup process, after the mold adjustment is completed, the operator moves the three-roll calendering equipment to a position that matches the mold, introduces the molten material between the middle roller and the lower roller, and the material package wraps around the middle roller and enters the upper roller before the sheet is discharged. At this time, the upper roller and the middle roller, as well as the middle roller and the lower roller are all in a pressed state, and the mold adjusting bolt is above the mold. When the operator operates the mold adjusting bolt with a wrench, there is a risk that the tool or limbs will be caught in the rotating roller. Summary of the invention
[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a three-roller calendering device.
[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a three-roll calendering device, comprising:
[0005] The roller mechanism comprises an upper roller, a middle roller, a lower roller, an upper roller driving motor connected to the upper roller, a middle roller driving motor connected to the middle roller, and a lower roller driving motor connected to the lower roller, wherein the upper roller, the middle roller and the lower roller are arranged in sequence from top to bottom and are parallel to each other;
[0006] an opening and closing mechanism, comprising a first elevator drivingly connected to the upper roller and a second elevator drivingly connected to the lower roller, wherein the first elevator is used to drive the upper roller to move in a vertical direction to approach and move away from the middle roller, and the second elevator is used to drive the lower roller to move in a vertical direction to approach and move away from the middle roller; and
[0007] The emergency stop protection mechanism includes an emergency stop switch and a pull wire, the emergency stop switch is connected to the upper roller drive motor, the middle roller drive motor, the lower roller drive motor, the first elevator and the second elevator signal, the head end of the pull wire is connected to the emergency stop switch, the tail end of the pull wire is fixed on the roller mechanism, and the emergency stop switch is configured to be triggered when the portion between the head end and the tail end of the pull wire is pulled.
[0008] In the above technical solution, it is further preferred that the roller mechanism also includes a frame, the frame includes a pair of wall panels arranged opposite to each other on the left and right, and the upper roller, middle roller and lower roller can be rotatably arranged around their own axis lines between the pair of wall panels.
[0009] In the above technical solution, further preferably, the emergency stop protection mechanism further includes a pair of guide wheels arranged opposite to each other left and right. The pair of guide wheels are respectively arranged on a pair of the wall plates rotatably around their own axis lines. Each of the guide wheels cooperates with the wire rope, and the axis line of the guide wheel is perpendicular to the wire rope; the pair of guide wheels are configured to tension the wire rope between the head end portion and the tail end portion.
[0010] In the above technical solution, further preferably, the pair of guide wheels are located above the upper roller.
[0011] In the above technical solution, further preferably, the pair of guide wheels are nylon guide wheels.
[0012] In the above technical solution, further preferably, bearing seats are installed at both ends of the upper roller, the middle roller and the lower roller. The bearing seats of the upper roller, the middle roller and the lower roller are all installed on the frame. The emergency stop switch is installed on the bearing seat at one end of the middle roller, and the tail end portion of the wire rope is fixed on the bearing seat at the other end of the middle roller.
[0013] In the above technical solution, further preferably, the bearing seats at both ends of the upper roller and the bearing seats at both ends of the lower roller are both configured to be slidably installed on the frame, and the bearing seats at both ends of the middle roller are fixedly installed on the frame.
[0014] In the above technical solution, further preferably, both the first lift and the second lift are screw lifts.
[0015] The present application has the following beneficial effects compared with the prior art:
[0016] The present application adds an emergency stop protection mechanism connected to the drive motors of the three rollers and the two lifts. When the emergency stop switch is triggered, the three rollers stop rotating immediately, and at the same time, the two lifts reverse immediately to open the pressed rollers, with sensitive reaction and ensuring safety during the production process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the position of a three-roll calendering device provided by an embodiment of the present application arranged at the rear side of an extrusion die;
[0018] Figure 2 For Figure 1 the three-roll calendering device in
[0019] Figure 3 For Figure 2 the partial enlarged schematic diagram at A in
[0020] Figure 4 is Figure 2 a partial enlarged schematic view at position B in
[0021] Figure 5 is Figure 2 a partial enlarged schematic view at position C in
[0022] Figure 6 is Figure 2 a partial enlarged schematic view at position D in
[0023] Figure 7 is Figure 2 a side view of the three-roll calendering equipment in
[0024] Figure 8 is Figure 7 a structural schematic view of the emergency stop protection mechanism in
[0025] Among them: 100, three-roll calendering equipment; 10, frame; 1, wall panel; 20, roll mechanism; 2, upper roll assembly; 21, upper roll; 22, first bearing block; 23, upper roll drive motor; 3, middle roll assembly; 31, middle roll; 32, second bearing block; 33, middle roll drive motor; 4, lower roll assembly; 41, lower roll; 42, third bearing block; 43, lower roll drive motor; 30, opening and closing mechanism; 5, first elevator; 6, second elevator; 40, emergency stop protection mechanism; 7, emergency stop switch; 8, pull wire; 81, head end; 82, tail end; 9, guide wheel. Detailed implementation manners
[0026] 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 may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment.
[0027] The embodiments of the present application provide a three-roll calendering equipment, as Figure 1 shown, the three-roll calendering equipment 100 is arranged at the rear side of the extrusion die 200 and is used to press and shape the material extruded by the extrusion die 200.
[0028] As Figure 1 , 2, as shown in FIGS. 7, the three-roll calendering device 100 includes a frame 10, a roller mechanism 20, an opening and closing mechanism 30, and an emergency stop protection mechanism 40. The roller mechanism 20, the opening and closing mechanism 30, and the emergency stop protection mechanism 40 are all installed on the frame 10.
[0029] The frame 10 includes a pair of side walls 1 arranged opposite to each other left and right. The roller mechanism 20 includes an upper roller assembly 2, a middle roller assembly 3, and a lower roller assembly 4. The upper roller assembly 2, the middle roller assembly 3, and the lower roller assembly 4 are sequentially arranged from top to bottom on a pair of side walls 1.
[0030] As Figure 2 , 7 shown, the upper roller assembly 2 includes an upper roller 21 extending in the left-right direction, first bearing seats 22 arranged at both ends of the upper roller 21, and an upper roller drive motor 23 for driving the upper roller 21 to rotate around its own axis. A pair of first bearing seats 22 are respectively slidably installed on a pair of side walls 1, and each first bearing seat 22 can move relative to the corresponding side wall 1 in the up-down direction. The upper roller 21 is installed on a pair of side walls 1 through a pair of first bearing seats 22 so that it can rotate around its own axis and move in the up-down direction.
[0031] The middle roller assembly 3 includes a middle roller 31 parallel to the upper roller 21, second bearing seats 32 arranged at both ends of the middle roller 31, and a middle roller drive motor 33 for driving the middle roller 31 to rotate around its own axis. A pair of second bearing seats 32 are respectively fixedly installed on a pair of side walls 1, and the middle roller 31 is installed on a pair of side walls 1 through a pair of second bearing seats 32 so that it can rotate around its own axis.
[0032] The lower roller assembly 4 includes a lower roller 41 parallel to the upper roller 21, third bearing seats 42 arranged at both ends of the lower roller 41, and a lower roller drive motor 43 for driving the lower roller 41 to rotate around its own axis. A pair of third bearing seats 42 are respectively slidably installed on a pair of side walls 1, and each third bearing seat 42 can move relative to the corresponding side wall 1 in the up-down direction. The lower roller 41 is installed on a pair of side walls 1 through a pair of third bearing seats 42 so that it can rotate around its own axis and move in the up-down direction.
[0033] The upper roller 21, the middle roller 31, and the lower roller 41 are sequentially arranged from top to bottom. The extrusion outlet of the extrusion die is aligned between the middle roller 31 and the lower roller 41, so that the extruded sheet passes around the middle roller 31 and the upper roller 21 in sequence for preliminary shaping. Among them, both the upper roller 21 and the lower roller 41 can move in the up-down direction, and the distances between the upper roller 21 and the middle roller 31 and between the lower roller 41 and the middle roller 31 are adjusted by the movement of the upper roller 21 and the lower roller 41.
[0034] The opening and closing mechanism 30 includes a first elevator 5 and a second elevator 6. The first elevator 5 is connected to the upper roller 21 through a pair of first bearing seats 22 to drive the upper roller 21 to move in the up and down directions to approach and move away from the middle roller 31; the second elevator 6 is connected to the lower roller 41 through a pair of third bearing seats 42 to drive the lower roller 41 to move in the up and down directions to approach and move away from the middle roller 31.
[0035] In the embodiment of the present application, the first elevator 5 and the second elevator 6 are both screw elevators, each of which includes a screw and a screw motor for driving the screw to rotate, and the screw motor can drive the screw to rotate forward and reversely around its own axis. When the screw rotates forward around its own axis, the roller connected to the screw transmission approaches the middle roller. When the screw rotates reversely around its own axis, the roller connected to the screw transmission moves away from the middle roller, thereby realizing the pressing and separation of the upper roller 21 and the lower roller 41 with the middle roller 31.
[0036] like Figures 3 - 8 As shown, the emergency stop protection mechanism 40 includes an emergency stop switch 7 and a pull wire 8. The emergency stop switch 7 is connected to the upper roller drive motor 23, the middle roller drive motor 33, the lower roller drive motor 43, the first elevator 5, and the second elevator 6. When the emergency stop switch 7 is triggered, the upper roller drive motor 23, the middle roller drive motor 33, and the lower roller drive motor 43 stop working, so that the upper roller 21, the middle roller 31, and the lower roller 41 stop rotating immediately; at the same time, the screw motor of the first elevator 5 and the screw motor of the second elevator 6 drive the corresponding screws to rotate in the opposite direction, so that the upper roller 21 and the lower roller 41 are respectively away from the middle roller 31.
[0037] The head end 81 of the pull wire 8 is connected to the emergency stop switch 7. In the embodiment of the present application, the emergency stop switch 7 is installed on the second bearing seat 32 at one end of the middle roller 31, and the tail end 82 of the pull wire 8 is fixed on the second bearing seat 32 at the other end of the middle roller 31.
[0038] The emergency stop protection mechanism 40 further includes a pair of guide wheels 9 arranged opposite to each other on the left and right sides. The pair of guide wheels 9 are respectively arranged on a pair of wall panels 1 so as to be rotatable around their own axis lines. Each guide wheel 9 cooperates with the pull wire 8, and the axis line of the guide wheel 9 is perpendicular to the pull wire 8. The pair of guide wheels 9 is configured to tighten the pull wire 8 between the head end 81 and the tail end 82. When the tightened portion of the pull wire 8 between the head end 81 and the tail end 82 is pulled, the emergency stop switch 7 is triggered.
[0039] A pair of guide wheels 9 is located above the upper roller 21, so that the wire 8 avoids the roller surface of the upper roller 21, the middle roller 31 and the lower roller 41, avoiding affecting the conveying of the extruded sheet on the roller mechanism 20. In the embodiment of the present application, the pair of guide wheels 9 are nylon guide wheels.
[0040] When the operator pulls the wire 8, the emergency stop switch 7 is triggered. At this time, the upper roller drive motor 23, the middle roller drive motor 33, and the lower roller drive motor 43 all stop working, and the upper roller 21, the middle roller 31, and the lower roller 41 stop rotating. At the same time, the first elevator 5 drives the upper roller 21 to move upward away from the middle roller 31, and the second elevator 6 drives the lower roller 41 to move downward away from the middle roller 31.
[0041] The present application adds an emergency stop protection mechanism connected to the drive motors of the three rollers and the two elevators. When the emergency stop switch is triggered, the three rollers immediately stop rotating, and at the same time, the two elevators immediately reverse to open the pressed rollers, with sensitive response and ensuring safety during the production process.
[0042] The above shows and describes the basic principle, 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 principle 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 three-roll calendering device, characterized in that, Comprising: A roller mechanism, including an upper roller, a middle roller, a lower roller, an upper roller drive motor drivingly connected to the upper roller, a middle roller drive motor drivingly connected to the middle roller, and a lower roller drive motor drivingly connected to the lower roller, wherein the upper roller, the middle roller, and the lower roller are arranged in sequence from top to bottom and are parallel to each other; An opening and closing mechanism, including a first elevator drivingly connected to the upper roller and a second elevator drivingly connected to the lower roller, wherein the first elevator is used to drive the upper roller to move in the up and down direction to approach and move away from the middle roller, and the second elevator is used to drive the lower roller to move in the up and down direction to approach and move away from the middle roller; And An emergency stop protection mechanism, including an emergency stop switch and a pull wire, wherein the emergency stop switch is signal-connected to the upper roller drive motor, the middle roller drive motor, the lower roller drive motor, the first elevator, and the second elevator, the head end of the pull wire is connected to the emergency stop switch, the tail end of the pull wire is fixed on the roller mechanism, and the emergency stop switch is configured to be triggered when a part between the head end and the tail end of the pull wire is pulled.
2. The three-roll calendering device according to claim 1, wherein The roller mechanism further includes a frame, and the frame includes a pair of left and right oppositely arranged wallboards, and the upper roller, the middle roller, and the lower roller are all rotatably arranged between the pair of wallboards around their own axis lines.
3. The three-roll calendering device according to claim 2, wherein The emergency stop protection mechanism further includes a pair of left and right oppositely arranged guide wheels, and the pair of guide wheels are respectively rotatably arranged on the pair of wallboards around their own axis lines, each of the guide wheels cooperates with the pull wire, and the axis line of the guide wheel is perpendicular to the pull wire; The pair of guide wheels are configured to be able to tighten the pull wire between the head end and the tail end.
4. The three-roll calendering device according to claim 3, characterized in that The pair of guide wheels are located above the upper roller.
5. The three-roll calendering device according to claim 3, characterized in that The pair of guide wheels are nylon guide wheels.
6. The three-roll calendering device according to claim 2, wherein Bearing seats are installed at both ends of the upper roller, the middle roller, and the lower roller, the bearing seats of the upper roller, the middle roller, and the lower roller are all installed on the frame, the emergency stop switch is installed on the bearing seat at one end of the middle roller, and the tail end of the pull wire is fixed on the bearing seat at the other end of the middle roller.
7. The three-roll calendering device according to claim 6, characterized in that, The bearing seats at both ends of the upper roller and the bearing seats at both ends of the lower roller are all configured to be slidably installed on the frame, and the bearing seats at both ends of the middle roller are fixedly installed on the frame.
8. The three-roll calendering device according to claim 1, characterized in that, Both the first elevator and the second elevator are screw jacks.