Alarm device for detecting paste leakage of material pressing machine
By installing an alarm device with a rotating ring and a laser rangefinder sensor on the press, the leakage of paste around the press plate can be detected in real time, solving the problem of difficult detection of paste leakage in the press and achieving timely alarm and avoidance of economic losses.
Patent Information
- Application Number
- CN202520276516.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-20
AI Technical Summary
When the paste leaks between the pressure plate seal and the cylinder wall during the dispensing or discharging process of the press, it is difficult for the operator to detect it in time, resulting in material waste and equipment contamination, causing economic losses.
A rotating ring is installed at the lower end of the piston rod of the hydraulic cylinder of the press, and a laser rangefinder is installed on the rotating ring. The sensor is driven to rotate around the press plate by the drive component to detect the distance between the press plate and the sensor in real time. The controller compares the measured distance value with the set value and issues an alarm when a leak occurs.
It enables timely detection of paste leaks, avoiding material waste and equipment contamination, and reducing economic losses.
Smart Images
Figure CN223598305U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of extruders, in particular to an alarm device for detecting paste leakage of a material pressing machine. BACKGROUND
[0002] The material pressing machine (also known as an extruder or a discharging machine) is a matched equipment of a double-planetary strong dispersion mixer or a multifunctional dispersion mixer, which functions to discharge or sub-pack the high-viscosity material produced by the mixer. The material pressing machine has a single-cylinder type and a double-cylinder type, and is driven by hydraulic pressure (less by pneumatic pressure), and the high-viscosity material such as ink, adhesive and silica gel in the material cylinder is pressed by a pressing disc (with a sealing ring) to be discharged from the outlet on the bottom of the material barrel to a pipeline, so as to realize various forms of packaging of the material.
[0003] The material pressing machine is widely used in the field of paste sub-packaging. At present, the problem is that when the paste in the cylinder leaks between the sealing ring of the pressing disc and the cylinder wall during the sub-packaging or discharging process, the operator is difficult to find in time, which leads to a large amount of paste leakage above the pressing disc, serious waste of material and pollution of equipment, and causes serious economic losses. CONTENT OF THE INVENTION
[0004] The present application provides an alarm device for detecting paste leakage of a material pressing machine, which aims to accurately detect the abnormality of paste leakage and timely remind the operator to avoid greater economic losses.
[0005] To achieve the above-mentioned purpose, the present application provides an alarm device for detecting paste leakage of a material pressing machine, the material pressing machine comprising a rack, a material cylinder arranged on the rack, a pressing disc arranged in the material cylinder, and an oil cylinder arranged on the rack and located above the material cylinder, a piston rod of the oil cylinder being vertically downward and connected with the pressing disc, the oil cylinder being used to drive the pressing disc to move downward in the material cylinder, the alarm device comprising a rotating ring, a driving assembly, a laser distance measuring sensor, a controller and an alarm;
[0006] The rotating ring is rotationally sleeved on the lower end of the piston rod of the oil cylinder, the driving assembly is arranged on the piston rod and is used to drive the rotating ring to rotate relative to the piston rod, the laser distance measuring sensor is arranged on the rotating ring and can rotate together with the rotating ring, the laser distance measuring sensor and the alarm are electrically connected to the controller, the laser distance measuring sensor is used to detect the distance between the periphery of the pressing disc and the probe of the laser distance measuring sensor, and transmit the distance measuring value per unit time to the controller, the controller compares the distance measuring value with a set value, when the distance measuring value is less than the set value, the controller controls the alarm to issue an alarm, and the set value is the distance between the upper edge of the pressing disc and the probe of the laser distance measuring sensor.
[0007] Optionally, the rotating ring is an external gear ring, the rotating ring is coaxially sleeved on the lower end of the piston rod and can rotate relative to the piston rod; the driving assembly comprises a motor support, a driving motor and a driving gear, the motor support is mounted on the piston rod above the external gear ring, the driving motor is arranged on the motor support, the driving gear is fixed on the output shaft of the driving motor and meshes with the external gear ring, and the laser ranging sensor is arranged at the lower end of the external gear ring.
[0008] Optionally, a bearing is arranged between the external gear ring and the piston rod.
[0009] Optionally, the alarm device comprises two laser ranging sensors, and the two laser ranging sensors are arranged at intervals in the circumferential direction of the rotating ring.
[0010] Optionally, the probes of the two laser ranging sensors are installed at an angle to make the detection laser avoid the guide column on the pressing plate and ensure that the two laser ranging sensors can irradiate the entire circumference of the pressing plate during rotation of the rotating ring.
[0011] Optionally, the alarm device comprises a buzzer, a warning light or an audible and visual alarm.
[0012] Optionally, the controller is further electrically connected to a control part of the pressing machine, and when the ranging value is less than the set value, the controller controls the piston rod of the oil cylinder to stop pressing down and controls the alarm device to issue an alarm.
[0013] The alarm device for detecting leakage of the paste of the pressing machine provided in the application has the following beneficial effects:
[0014] By arranging the rotating ring at the lower end of the piston rod of the oil cylinder and arranging the laser ranging sensor on the rotating ring, the laser ranging sensor and the alarm device are electrically connected to the controller, the laser ranging sensor is used to detect the distance between the periphery of the pressing plate and the probe of the laser ranging sensor, and the ranging value in unit time is transmitted to the controller, the controller compares the ranging value with the set value (i.e. the distance between the upper edge of the pressing plate and the probe of the laser ranging sensor), and when the ranging value is less than the set value, the controller controls the alarm device to issue an alarm.
[0015] During the dispensing process, the driving assembly drives the rotating ring to rotate, and drives the laser ranging sensor to move in the circumferential direction above the pressing plate to detect the distance between the periphery of the pressing plate and the probe of the laser ranging sensor; when the paste leaks from the gap between the edge of the pressing plate and the inner wall of the cylinder, the paste will accumulate on the periphery of the pressing plate, resulting in a decrease in the ranging value when the laser ranging sensor passes the section of the circumference where the paste accumulates. After the ranging value is fed back to the controller, the controller issues an alarm through the alarm device to inform the operator to stop pressing down the pressing plate, prevent the paste from continuing to leak and avoid greater economic losses. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] in:
[0018] Figure 1 This is a schematic diagram of an alarm device for detecting paste leakage in a pressing machine, as shown in one embodiment of this application.
[0019] Figure 2 yes Figure 1 A schematic diagram of the piston rod and the alarm device located on it;
[0020] Figure 3 This is a partial structural schematic diagram of an alarm device for detecting paste leakage in a pressing machine, as shown in one embodiment of this application;
[0021] Figure 4 This is a schematic diagram illustrating an embodiment of the present application of an alarm device on a pressing machine for detecting paste leakage when encountering paste leakage;
[0022] Figure 5 This is a schematic diagram illustrating, in one embodiment of the present application, the entire circumference of the pressure plate illuminated by two laser rangefinders during the 180° reciprocating rotation of the rotating ring on a pressure press with guide columns.
[0023] Explanation of reference numerals in the attached figures:
[0024] 10. Frame; 20. Material cylinder; 30. Pressure plate; 40. Hydraulic cylinder; 41. Piston rod; 50. Guide column;
[0025] 100. Rotating ring; 200. Drive assembly; 210. Motor bracket; 220. Drive motor; 230. Drive gear; 300. Laser rangefinder sensor. Detailed Implementation
[0026] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.
[0027] It is to be understood that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or indirectly on or connected to the other element by way of one or more other elements.
[0028] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like as used herein are intended to refer to the orientation or position of the device or element as shown in the drawings and are used only for convenience in providing a description of the application and do not connote or depend upon any particular orientation, manner of use, or spatial arrangement, unless otherwise indicated.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0030] As described in the background, during the operation of the press, the paste in the cylinder leaks from the gap between the seal ring of the platen and the cylinder wall, which is difficult for the operator to discover in time, resulting in a large amount of paste leaking onto the platen, causing serious waste of materials and contamination of the equipment, and resulting in serious economic losses.
[0031] In order to solve the above problems, as Figures 1-3As shown, the embodiment of the present application provides an alarm device for detecting the leakage of the paste of the press, which is suitable for the press, the press comprising a frame 10, a material cylinder 20 arranged on the frame 10, a press plate 30 arranged in the material cylinder 20, and an oil cylinder 40 arranged on the frame 10 and above the material cylinder 20, a piston rod 41 of the oil cylinder 40 vertically downward and connected with the press plate 30, the oil cylinder 40 being used to drive the press plate 30 to move downward in the material cylinder 20, the alarm device comprising a rotating ring 100, a driving assembly 200, a laser ranging sensor 300, a controller (not shown in the figure) and an alarm (not shown in the figure). The rotating ring 100 is rotationally sleeved on the lower end of the piston rod 41 of the oil cylinder 40, the driving assembly 200 is arranged on the piston rod 41 and is used to drive the rotating ring 100 to rotate relative to the piston rod 41, the laser ranging sensor 300 is arranged on the rotating ring 100 and can rotate together with the rotating ring 100, the laser ranging sensor 300 and the alarm are electrically connected to the controller, the laser ranging sensor 300 is used to detect the distance between the periphery of the press plate 30 and the probe of the laser ranging sensor 300, and to transmit the ranging value per unit time to the controller, the controller compares the ranging value with a set value, when the ranging value is less than the set value, the controller controls the alarm to issue an alarm, and the set value is the distance between the upper edge of the press plate 30 and the probe of the laser ranging sensor 300.
[0032] During the working process of the press with the alarm device, the driving assembly 200 drives the rotating ring 100 to rotate (it is to be noted that, in order to avoid the cable connected between the laser ranging sensor 300 and the controller from winding, when the laser ranging sensor 300 is one, the driving assembly 200 is arranged to drive the rotating ring 100 to rotate reciprocatingly by 360°, and when two laser ranging sensors 300 are symmetrically arranged outside the rotating ring 100, the driving assembly 200 is arranged to drive the rotating ring 100 to rotate reciprocatingly by 180°), thereby driving the laser ranging sensor 300 to move circumferentially above the press plate 30 and detecting the distance between the periphery of the press plate 30 and the probe of the laser ranging sensor 300. Figure 4 As shown, when the paste leaks from between the edge of the press plate 30 and the inner wall of the material cylinder 20, the paste will accumulate around the periphery of the press plate 30 (as indicated by the arrow A), which causes the ranging value to decrease when the laser ranging sensor 300 passes through the section of the circumference where the paste accumulates, and after the ranging value is fed back to the controller, the controller issues an alarm through the alarm to inform the operator to stop the press plate 30 from pressing downward, so as to prevent the paste from continuing to leak and avoid greater economic losses.
[0033] It can be understood that the controller comprises a programmable logic controller (PLC), and the alarm comprises a buzzer, a warning light or an audible and visual alarm. The controller and the alarm can be both arranged on the frame 10.
[0034] In an embodiment, as shown in Figures 2-3As shown, the rotating ring 100 is an outer gear ring, the rotating ring 100 is coaxially arranged on the lower end of the piston rod 41 and can rotate relative to the piston rod 41; the driving assembly 200 includes a motor bracket 210, a driving motor 220 and a driving gear 230, the motor bracket 210 is installed on the piston rod 41 above the outer gear ring, the driving motor 220 is arranged on the motor bracket 210, the driving gear 230 is fixed on the output shaft of the driving motor 220 and is engaged with the outer gear ring, and the laser ranging sensor 300 is arranged at the lower end of the outer gear ring, avoiding the engagement teeth on the outer peripheral side of the outer gear ring.
[0035] By the above arrangement, the driving motor 220 drives the driving gear 230 to rotate, and then drives the outer gear ring engaged with the driving gear 230 to rotate relative to the piston rod 41, and the outer gear ring drives the laser ranging sensor 300 located thereon to rotate synchronously when the outer gear ring rotates, and then detects the distance between the different positions of the periphery of the pressing plate 30 and the probe of the laser ranging sensor 300.
[0036] Further, in order to make the outer gear ring rotate smoothly on the piston rod 41, a bearing is arranged between the outer gear ring and the piston rod 41.
[0037] In a specific embodiment, as shown in Figures 2-3 The alarm device includes two laser ranging sensors 300, which are arranged at intervals in the circumferential direction of the rotating ring 100. By this arrangement, the angle of reciprocating rotation of the rotating ring 100 driven by the driving motor 220 is less than 360°.
[0038] In a specific embodiment, as shown in Figures 4-5 On the material pressing machine with the guide column 50, in order to make the detection laser emitted by the probe of the laser ranging sensor 300 avoid the guide column 50, the probes of the two laser ranging sensors 300 are installed at an angle to make the detection laser avoid the guide column 50 on the pressing plate 30, and to ensure that the two laser ranging sensors 300 can irradiate the entire circumference of the pressing plate 30 during the rotation of the rotating ring 100.
[0039] During the reciprocating rotation of the rotating ring 100 by 180°, the two laser ranging sensors 300 can irradiate the entire circumference of the pressing plate 30, Figure 5 As shown in the figure, the dark diagonal lines between the rotating ring 100 and the edge of the pressing plate 30 are the range swept by the probe of one of the laser ranging sensors 300, and the light diagonal lines between the rotating ring 100 and the edge of the pressing plate 30 are the range swept by the probe of the other laser ranging sensor 300. As can be seen, after the two laser ranging sensors 300 are installed at an angle, the detection laser can avoid the guide column 50 on the pressing plate 30 and cover the entire circumference of the pressing plate 30 during the rotation of the rotating ring 100.
[0040] In some specific embodiments, the controller is further electrically connected to the control part of the press, and when the distance measurement value is less than the set value, the controller controls the piston rod 41 of the oil cylinder 40 to stop pressing down, and controls the alarm to give an alarm.
[0041] In combination Figures 1-5 As shown, when the press with the alarm device is working, the oil cylinder 40 drives the press plate 30 to press the paste out all the time; at this time, the driving motor 220 drives the driving gear 230 at a certain speed, thereby driving the outer gear ring to rotate back and forth by 180°, and then driving the two laser distance measurement sensors 300 to rotate, detecting the distance between the periphery of the press plate 30 and the probe of the laser distance measurement sensor 300 and transmitting the distance measurement value per unit time to the controller for comparison with the set value; if the distance measurement value is less than the set value, the pressing out of the material is stopped, and the operator is informed by the alarm; the driving motor 220 drives all the components to return to the initial position.
[0042] If there is no abnormality, the driving motor 220 will continuously drive the outer gear ring and the laser distance measurement sensor 300 located thereon to perform 180° reciprocating motion at a set rotating speed until the paste is finished.
[0043] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.
[0044] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. An alarm device for detecting paste leakage in a pressing machine, the pressing machine comprising a frame, a material cylinder mounted on the frame, a pressure plate disposed within the material cylinder, and a hydraulic cylinder mounted on the frame and located above the material cylinder, the piston rod of the hydraulic cylinder pointing vertically downward and connected to the pressure plate, the hydraulic cylinder being used to drive the pressure plate to move downward within the material cylinder, characterized in that, The alarm device includes a rotating ring, a drive assembly, a laser rangefinder, a controller, and an alarm. The rotating ring is rotatably sleeved on the lower end of the piston rod of the hydraulic cylinder. The driving assembly is disposed on the piston rod and is used to drive the rotating ring to rotate relative to the piston rod. The laser rangefinder is disposed on the rotating ring and can rotate with the rotating ring. The laser rangefinder and the alarm are both electrically connected to the controller. The laser rangefinder is used to detect the distance between the periphery of the pressure plate and the probe of the laser rangefinder, and transmits the distance measurement value per unit time to the controller. The controller compares the distance measurement value with a set value. When the distance measurement value is less than the set value, the controller controls the alarm to sound an alarm. The set value is the distance between the upper edge of the pressure plate and the probe of the laser rangefinder.
2. The alarm device for detecting paste leakage in a pressing machine according to claim 1, characterized in that, The rotating ring is an external gear ring, which is coaxially sleeved on the lower end of the piston rod and can rotate relative to the piston rod. The drive assembly includes a motor bracket, a drive motor, and a drive gear. The motor bracket is mounted on the piston rod above the external gear ring, the drive motor is mounted on the motor bracket, and the drive gear is fixed on the output shaft of the drive motor and meshes with the external gear ring. The laser ranging sensor is located at the lower end of the external gear ring.
3. The alarm device for detecting paste leakage in a pressing machine according to claim 2, characterized in that, A bearing is provided between the external gear ring and the piston rod.
4. The alarm device for detecting paste leakage in a pressing machine according to claim 1, characterized in that, The alarm device includes two laser ranging sensors, which are spaced apart in the circumferential direction of the rotating ring.
5. The alarm device for detecting paste leakage in a pressing machine according to claim 4, characterized in that, The probes of the two laser rangefinders are installed at a certain angle so that the detection laser avoids the guide post on the pressure plate, ensuring that the two laser rangefinders can illuminate the entire circumference of the pressure plate during the rotation of the rotating ring.
6. The alarm device for detecting paste leakage in a pressing machine according to claim 1, characterized in that, The alarm includes a buzzer, a warning light, or an audible and visual alarm.
7. The alarm device for detecting paste leakage in a pressing machine according to any one of claims 1-6, characterized in that, The controller is also electrically connected to the control part of the press. When the distance measurement value is less than the set value, the controller controls the piston rod of the hydraulic cylinder to stop pressing down and at the same time controls the alarm to sound an alarm.