Pressing device for high-density polyurethane foam
By introducing pressure sensors and PLC controllers into the pressing device, combined with servo motors and elastic pressure plates, the problem of inaccurate pressing speed control during the pressing process was solved, achieving uniform pressing and surface flatness of high-density polyurethane foam, and improving production quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-03
AI Technical Summary
Existing multi-layer foam assembly pressing devices have difficulty in accurately controlling the pressing speed during the pressing process, resulting in uneven foam thickness and density. They also lack real-time monitoring and automatic adjustment functions, which affects the quality stability of high-density polyurethane foam.
By employing pressure sensors and PLC controllers in conjunction with servo motors and drivers, real-time pressure monitoring and automatic adjustment of foam materials are achieved. The movement of the pressing device is precisely controlled by the servo motor to ensure uniform pressure application. Combined with the elastic pressure plate, it adapts to uneven surfaces and improves the pressing quality.
This achieved an overall performance improvement in high-density polyurethane foam, ensuring uniform pressure and surface smoothness of the foam material, and improving the stability and consistency of production quality.
Smart Images
Figure CN224075035U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of foam production technology, specifically relating to a pressing device for high-density polyurethane foam. Background Technology
[0002] In the production process of high-density polyurethane foam, multi-layer foam assembly and pressing technology has been widely used. This technology involves stacking multiple layers of foam material together and pressing them together using external pressure, thereby improving the overall density and performance of the high-density polyurethane foam.
[0003] Existing multi-layer foam assembly pressing devices still have some problems in application. During the pressing process, it is difficult to accurately control the pressing speed, resulting in uneven thickness and density of the foam. This unevenness affects the final performance of high-density polyurethane foam. At the same time, the lack of real-time monitoring and automatic adjustment functions for the pressure during the pressing process makes the quality of high-density polyurethane foam susceptible to influence, leading to unstable quality. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a pressing device for high-density polyurethane foam. The purpose is to monitor the pressure during the foam pressing process in real time through automated control, ensuring uniform pressure is applied to the foam material and improving the overall performance of high-density polyurethane foam.
[0005] To achieve the above objectives, this utility model provides a pressing device for high-density polyurethane foam, comprising a pressing device, which includes a pressing table, a pressing plate, and a pressure sensor; the pressing table is located below the pressing plate and is positioned opposite to it; the pressure sensor is installed above the pressing plate; a driving device, which includes a servo motor and a servo driver; the servo driver and the servo motor are connected via a cable; a transmission device, which is connected to the driving device and the pressing device; the driving device controls the transmission device to move up and down; the transmission device drives the pressing device to move up and down; a control device, which includes a PLC controller; the input terminal of the PLC controller is linearly connected to the pressure sensor; the output terminal of the PLC controller is connected to the servo driver; a fixed frame, which includes a placement platform and a fixing rod; the placement platform is located below the pressing table; the fixing rod and the placement platform are positioned opposite to each other; the control device is installed on one side of the placement platform; and the servo motor is fixed to the fixing rod.
[0006] A pressing device for high-density polyurethane foam includes a pressing device, a driving device, a transmission device, a control device, and a fixed frame. These devices cooperate to control the precise movement of the pressure plate in the pressing device, applying uniform pressure to the foam material and improving the overall performance of the high-density polyurethane foam. The production of high-density polyurethane foam involves stacking multiple layers of foam material together and pressing them together using external pressure to tightly bond the layers, forming a high-density composite structure. The pressing device includes a pressing table, a pressure plate, and a pressure sensor. The pressing table holds the foam material to be pressed, the pressure plate contacts the foam material, and the pressure sensor monitors the real-time pressure during the pressing process to ensure that each layer of foam material is uniformly compressed. The drive unit provides a power source for the entire pressing process, including a servo motor and a servo driver. The servo motor precisely controls the movement of the pressing device, further ensuring the quality of the high-density polyurethane foam after pressing. The servo driver is connected to the servo motor via a cable and is also connected to the output of a PLC controller. It can receive real-time monitoring results from the pressure sensor to control the servo motor, thereby achieving precise movement of the pressing device. The transmission unit, controlled by the drive unit, further drives the pressing device to move, achieving the pressing of each layer of foam material. The control unit can monitor the pressure data during the pressing process in real time and automatically adjust to ensure pressing quality. This includes a PLC controller, which is the core control unit of the entire pressing device, connecting the pressure sensor and the servo driver, and achieving precise control of the pressing process through programming. The fixed frame mainly houses the pressing device and provides stable support for the servo motor, ensuring the stable operation of the foam pressing process.
[0007] Furthermore, the pressing device also includes a connecting plate and elastic elements; the upper part of the connecting plate is connected to the transmission device; the connecting plate is disposed above the pressure plate; the connecting plate and the pressure plate are fixed by elastic elements; the elastic elements are disposed at the four corners of the connecting plate and the pressure plate.
[0008] The connecting plate is connected to the transmission device at the top and can move together with it, driving the pressure plate below to move and thus pressing the multi-layer foam. Simultaneously, as the connecting plate moves the pressure plate down to the top of the foam, the elastic element allows the connecting plate to continue moving downwards, generating pressure. A pressure sensor monitors the real-time pressure data, and the PLC controller uses this data to control the drive device to achieve the optimal pressing pressure, effectively ensuring the performance of the pressed high-density polyurethane foam.
[0009] Furthermore, a baffle is connected to the outside of the pressure plate; the top of the baffle is higher than the connecting plate.
[0010] A baffle is connected to the outside of the pressure plate. After pressing is completed, the connecting plate needs to be moved upward, which will cause the pressure plate to move upward. During this process, the elastic element will undergo a certain deformation. The baffle can prevent the elastic element from undergoing excessive deformation, ensure that the elastic element can be used normally, and improve the service life of the entire pressing device.
[0011] Furthermore, the transmission device includes an electric push rod and a transmission plate; one end of the electric push rod is connected to the output end of the servo motor, and the other end is connected to the top of the transmission plate; the bottom of the transmission plate is connected to the connecting plate.
[0012] The electric linear actuator, driven by a servo motor, moves the transmission plate, which in turn moves the connecting plate to perform the pressing process. The transmission plate connects the electric linear actuator to the connecting plate, ensuring smooth movement.
[0013] Furthermore, the transmission device also includes a sliding rod; the sliding rod is fixed between the placement platform and the fixed rod; the baffle has a sliding hole; the sliding rod cooperates with the sliding hole, and the baffle slides along the sliding rod.
[0014] The baffle can move along the sliding rod, ensuring a smoother movement of the pressure plate connected to the baffle.
[0015] Furthermore, multiple pressure sensors are installed above the pressure plate.
[0016] Multiple pressure sensors are installed in the pressing device to monitor the pressure at each point in real time, ensuring that the high-density polyurethane foam is evenly compressed and guaranteeing the quality of the high-density polyurethane foam after pressing.
[0017] Furthermore, the control device also includes a control panel and an emergency stop button; the control panel is connected to the PLC controller via a communication interface; the emergency stop button is located on the control panel.
[0018] The control unit also includes a control panel and an emergency stop button. The control panel provides an interactive interface between the operator and the pressing device, facilitating parameter input, process monitoring, and data viewing. The emergency stop button can promptly shut down the equipment in case of malfunction during operation, thereby protecting the operator's safety in emergencies, preventing accidents, and ensuring the safety of the high-density polyurethane foam pressing process.
[0019] Furthermore, the pressure plate is an elastic pressure plate.
[0020] The pressure plate is an elastic pressure plate made of elastic material, which can automatically adapt to the unevenness of the high-density polyurethane foam surface, so that the pressure is evenly distributed and the surface of the high-density polyurethane foam is flat after pressing.
[0021] Beneficial effects
[0022] 1. The present invention provides a pressing device for high-density polyurethane foam. By setting a pressure sensor, the device can monitor the real-time pressure during the pressing process, ensuring that each layer of foam material can be uniformly compressed, thereby improving the overall performance of the high-density polyurethane foam.
[0023] 2. A pressing device for high-density polyurethane foam according to this utility model, by setting up a PLC controller, the PLC controller is connected to a pressure sensor and a servo driver, and the pressing process is precisely controlled by programming.
[0024] 3. The present invention provides a pressing device for high-density polyurethane foam, wherein the pressing plate is an elastic pressing plate that can automatically adapt to the unevenness of the surface of the high-density polyurethane foam, so as to distribute the pressure evenly and ensure that the surface of the high-density polyurethane foam is flat after pressing. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of a pressing device for high-density polyurethane foam.
[0026] Figure 2 This is a partial enlarged view of the pressing device and the transmission device;
[0027] Figure 3 This is a schematic diagram of the control device.
[0028] In the attached diagram: 1. Pressing device; 2. Drive device; 3. Transmission device; 4. Control device; 5. Fixed frame; 11. Pressing table; 12. Press plate; 13. Pressure sensor; 14. Connecting plate; 15. Elastic element; 16. Baffle; 21. Servo motor; 31. Electric push rod; 32. Transmission plate; 33. Sliding rod; 41. Control panel; 42. Emergency stop button; 51. Placement platform; 52. Fixed rod; 161. Sliding hole. Detailed Implementation
[0029] Example 1
[0030] like Figures 1 to 3The diagram shows a pressing device for high-density polyurethane foam, comprising a pressing device 1, which includes a pressing table 11, a pressing plate 12, and a pressure sensor 13. The pressing table 11 has an internal cavity for storing the multi-layered foam material to be pressed. The pressing table 11 is positioned below and opposite the pressing plate 12. The pressing plate 12 is a rectangular thin plate. The pressure sensor 13 is mounted above the pressing plate 12 to monitor the real-time pressure during the pressing process. A driving device 2 includes a servo motor 21 and a servo driver. The servo driver and the servo motor 21 are connected via a cable. A transmission device 3 is connected to the driving device 2. The pressure plate 1 is connected to the pressing device 1; the drive device 2 controls the transmission device 3 to move up and down; the transmission device 3 drives the pressing device 1 to move up and down; the control device 4 includes a PLC controller; the input terminal of the PLC controller is linearly connected to the pressure sensor 13 to receive the pressure data from the pressure sensor 13; the output terminal of the PLC controller is connected to the servo driver; the fixed frame 5 includes a placement platform 51 and a fixing rod 52; the placement platform 51 is located below the pressing platform 11; the fixing rod 52 and the placement platform 51 are arranged opposite to each other; the control device 4 is installed on one side of the placement platform 51; the servo motor 21 is stably fixed to the fixing rod 52 by bolts.
[0031] A pressing device for high-density polyurethane foam includes a pressing device 1, a driving device 2, a transmission device 3, a control device 4, and a fixed frame 5. These devices cooperate to control the precise movement of the pressure plate 12 in the pressing device 1, applying uniform pressure to the foam material and improving the overall performance of the high-density polyurethane foam. The production of high-density polyurethane foam involves stacking multiple layers of foam material together and pressing them together using external pressure to tightly bond the layers, forming a high-density composite structure, thus producing high-density polyurethane foam. The pressing device 1 includes a pressing table 11, a pressure plate 12, and a pressure sensor 13. The pressing table 11 holds the foam material to be pressed, the pressure plate 12 contacts the foam material, pressing the multiple layers together, and the pressure sensor 13 monitors the real-time pressure during the pressing process to ensure that each layer of foam material is uniformly compressed. The drive unit 2 provides a power source for the entire pressing process, including a servo motor 21 and a servo driver. The servo motor 21 can precisely control the movement of the pressing device 1, further ensuring the quality of the high-density polyurethane foam after pressing. The servo driver is connected to the servo motor 21 via a cable, and the servo driver is connected to the output of the PLC controller. It can receive the real-time monitoring results from the pressure sensor 13 to control the servo motor 21, thereby achieving precise movement of the pressing device 1. The transmission device 3 is controlled by the drive unit 2, further driving the pressing device 1 to move and achieve pressing of each layer of foam material. The control device 4 can monitor the pressure data in real time during the pressing process and automatically adjust to ensure the pressing quality. It includes a PLC controller, which is the control core of the entire pressing device. The PLC controller connects the pressure sensor 13 and the servo driver, and achieves precise control of the pressing process through programming. The fixed frame 5 mainly houses the pressing device and provides a stable support for fixing the servo motor 21, ensuring the stable operation of the foam pressing process.
[0032] like Figure 1 and Figure 2 As shown, the pressing device 1 also includes a connecting plate 14 and an elastic element 15; the connecting plate 14 is rectangular and is tightly connected to the transmission device 3 at the top by bolts; the connecting plate 14 is located above the pressure plate 12; the connecting plate 14 and the pressure plate 12 are fixed by the elastic element 15; the elastic element 15 is located at the four corners of the connecting plate 14 and the pressure plate 12.
[0033] The upper part of the connecting plate 14 is connected to the transmission device 3, and it can move together with the transmission device 3 to drive the pressure plate 12 below it to move, thereby pressing the multi-layer foam. At the same time, when the connecting plate 14 drives the pressure plate 12 to move down to the top of the foam, due to the setting of the elastic element 15, the connecting plate 14 can continue to move down, generating pressure. The pressure sensor 13 monitors the real-time pressure data, and the PLC controller controls the drive device 2 according to the pressure data to achieve the most suitable pressing pressure, thereby effectively ensuring the performance of the high-density polyurethane foam after pressing.
[0034] like Figure 2 As shown, a baffle 16 is connected to the outer side of the pressure plate 12; the top of the baffle 16 is higher than the connecting plate 14.
[0035] A baffle 16 is connected to the outside of the pressure plate 12. After pressing is completed, the connecting plate 14 needs to move upward, which will drive the pressure plate 12 to move upward. During this process, the elastic element 15 will undergo a certain deformation. The baffle 16 can prevent the elastic element 15 from undergoing excessive deformation, ensure that the elastic element 15 can be used normally, and improve the service life of the entire pressing device.
[0036] like Figure 1 As shown, the transmission device 3 includes an electric push rod 31 and a transmission plate 32; one end of the electric push rod 31 is connected to the output end of the servo motor 21 via a coupling, and the other end is connected to the top of the transmission plate 32; the bottom of the transmission plate 32 is tightly connected to the connecting plate 14 via bolts.
[0037] The electric push rod 31, driven by the servo motor 21, moves the transmission plate 32, which in turn moves the connecting plate 14 to perform the pressing process. The transmission plate 32 is the component that connects the electric push rod 31 to the connecting plate 14, ensuring smooth movement.
[0038] like Figure 1 and Figure 2 As shown, the transmission device 3 also includes a sliding rod 33; the bottom of the sliding rod 33 is tightly fixed to the placement platform 51 by bolts, and the top is tightly fixed to the fixing rod 52 by bolts; the baffle 16 has a sliding hole 161; the sliding rod 33 cooperates with the sliding hole 161, and the baffle 16 slides along the sliding rod 33.
[0039] The baffle 16 can move along the sliding rod 33 to ensure that the movement of the pressure plate 12 connected to the baffle 16 is more stable.
[0040] like Figure 1 As shown, three pressure sensors 13 are provided above the pressure plate 12, and the three pressure sensors 13 are arranged at equal intervals along the center line of the pressure plate 12.
[0041] Three pressure sensors 13 are installed in the pressing device 1 to monitor the pressure at each point in real time, ensuring that the high-density polyurethane foam can be pressed evenly and guaranteeing the quality of the high-density polyurethane foam after pressing.
[0042] like Figure 1 and Figure 3 As shown, the control device 4 also includes a control panel 41 and an emergency stop button 42; the control panel 41 is connected to the PLC controller via a communication interface; the emergency stop button 42 is located on the control panel 41.
[0043] The control device 4 also includes a control panel 41 and an emergency stop button 42. The control panel 41 provides an interactive interface between the operator and the pressing device, facilitating parameter input, process monitoring, and data viewing. The emergency stop button 42 can shut down the equipment promptly in case of any abnormality during the pressing process, thereby protecting the operator's safety in emergency situations, preventing accidents, and ensuring the safety of the high-density polyurethane foam pressing process.
[0044] like Figure 1 and Figure 2 As shown, pressure plate 12 is an elastic pressure plate.
[0045] The pressure plate 12 is an elastic pressure plate made of elastic material, which can automatically adapt to the unevenness of the surface of the high-density polyurethane foam, so that the pressure is evenly distributed and the surface of the high-density polyurethane foam is flat after pressing.
Claims
1. A pressing device for high-density polyurethane foam, characterized by: Include: Pressing device (1), the pressing device (1) includes pressing table (11), pressing plate (12) and pressure sensor (13);The pressing table (11) is arranged below the pressing plate (12), and is arranged opposite to the pressing plate (12);The pressure sensor (13) is installed above the pressing plate (12); Drive device (2), the drive device (2) includes servo motor (21) and servo driver;The servo driver is connected with servo motor (21) through cable; Transmission device (3), the transmission device (3) is connected with drive device (2) and pressing device (1);The drive device (2) controls the up-down movement of transmission device (3);The transmission device (3) drives the up-down movement of pressing device (1); Control device (4), the control device (4) includes PLC controller;The input end of the PLC controller is linearly connected with the pressure sensor (13);The output end of the PLC controller is connected with the servo driver; Fixed frame (5), the fixed frame (5) includes placing table (51) and fixed rod (52);The placing table (51) is arranged below the pressing table (11);The fixed rod (52) and the placing table (51) are arranged opposite;The control device (4) is installed on one side of the placing table (51);The servo motor (21) is fixed on the fixed rod (52).
2. The pressing apparatus for high density polyurethane foam according to claim 1, wherein: The pressing device (1) further includes connecting plate (14) and elastic element (15);The upper side of the connecting plate (14) is connected with the transmission device (3);The connecting plate (14) is arranged above the pressing plate (12);The connecting plate (14) and the pressing plate (12) are fixed by the elastic element (15);The elastic element (15) is arranged at the four corners of the connecting plate (14) and the pressing plate (12).
3. The pressing apparatus for high density polyurethane foam according to claim 2, wherein: The outer side of the pressing plate (12) is connected with the baffle (16);The top of the baffle (16) is higher than the connecting plate (14).
4. The pressing apparatus for high density polyurethane foam according to claim 3, wherein: The transmission device (3) includes electric push rod (31) and transmission plate (32);One end of the electric push rod (31) is connected with the output end of the servo motor (21), and the other end is connected with the top of the transmission plate (32);The bottom of the transmission plate (32) is connected with the connecting plate (14).
5. The pressing apparatus for high density polyurethane foam according to claim 4, wherein: The transmission device (3) further includes sliding rod (33);The sliding rod (33) is fixed between the placing table (51) and the fixed rod (52);The baffle (16) has a sliding hole (161);The sliding rod (33) cooperates with the sliding hole (161), and the baffle (16) slides along the sliding rod (33).
6. The pressing apparatus for high density polyurethane foam according to claim 1, wherein: A plurality of pressure sensors (13) are arranged above the pressing plate (12).
7. The pressing apparatus for high density polyurethane foam according to claim 1, wherein: The control device (4) further includes control panel (41) and emergency stop button (42);The control panel (41) is connected with the PLC controller through the communication interface;The emergency stop button (42) is arranged on the control panel (41).
8. The pressing apparatus for high density polyurethane foam according to claim 1, wherein: The pressing plate (12) is an elastic pressing plate.