Pressing device for rubber product processing

Abstract

The invention discloses a pressing device for rubber product processing, and relates to the technical field of press machines for rubber processing, the pressing device comprises a press machine rack, a press roller driving mechanism, a pressure adjusting piston, a main press roller, an auxiliary press roller, a pressure feedback piece, a magnetic compensation piece and a rubber contour prediction piece, the press machine rack is internally provided with a pressing chamber; a main compression roller and an auxiliary compression roller are installed through a supporting seat and driven by a compression roller driving mechanism to rotate, a pressure adjusting piston adjusts the overall pressure of the main compression roller, a pressure feedback piece on the main compression roller can dynamically detect the pressing pressure and generate a magnetic field, and a magnetic compensation piece of the auxiliary compression roller is matched with the magnetic field to achieve local pressure compensation. Compared with an existing press machine, the press machine has the advantages that the press fit quality and stability of rubber products can be improved through pretreatment detection, gradient pressure compensation and multi-parameter cooperative control, and the production efficiency is improved. And the universality and adaptability of equipment are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rubber processing presses, and more particularly to a rubber product processing press device. BACKGROUND

[0002] In the production and processing of rubber products, the pressing process is one of the key links that determine product quality. Commonly, a press is used to apply pressure to the rubber product. However, rubber material has the characteristics of large elasticity and high viscosity, and its pressing process needs to precisely control the pressure distribution, contact temperature, and pressing time to ensure the tight bonding between the layers of rubber and avoid defects such as lack of glue, bubbles, and uneven surface. However, the existing presses usually use fixed-pressure roller structures, and the pressure control is achieved through mechanical adjustment or simple hydraulic systems. This approach is difficult to meet the dynamic pressure requirements of rubber products with uneven thickness and material distribution differences. Early presses mainly relied on manual experience to adjust the pressure, and had problems such as poor pressure uniformity and slow response speed. With the development of automation technology, some devices introduced pneumatic or hydraulic pressure adjustment systems, but these systems can only adjust the overall pressure and cannot accurately compensate for pressure abnormalities in local areas. When there are local depressions or protrusions on the surface of the rubber product, the traditional device is prone to overpressure damage or insufficient pressure, affecting the mechanical properties and service life of the product. In addition, traditional presses often lack pre-treatment detection of the surface profile of the rubber product, and cannot predict the pressure distribution before pressing, resulting in lag in pressure adjustment and increasing the scrap rate. With the continuous progress of material science and measurement and control technology, the application field of rubber products is expanding, and the requirements for pressing quality are becoming higher and higher. For example, rubber seals for automobiles and rubber shock-absorbing products for aerospace not only require high bonding strength, but also require smooth surfaces and high dimensional accuracy. This has prompted presses to develop towards intelligence and refinement, and need to have functions such as real-time dynamic pressure detection, local pressure compensation, and pre-treatment profile detection. However, there is still a technical gap in the existing technology for the integration of local pressure regulation and profile pre-detection during the pressing process of rubber products, and there is an urgent need to design a new pressing device that can achieve precise pressure control, dynamic compensation, and pre-treatment detection to meet the production needs of high-end rubber products. SUMMARY

[0003] The present application relates to the technical field of rubber processing presses, and more particularly to a rubber product processing press device.

[0004] To achieve the above-mentioned purpose, the technical solution provided by an embodiment of the present application is as follows: The utility model provides a kind of pressing device for rubber product processing, including press frame, two compression roller driving mechanisms, two groups of pressure regulating pistons and mounting sleeve, the inside of the press frame is provided with pressing chamber, the upper and lower ends of the press frame are provided with feeding port and discharge port respectively, two groups of support seat are fixedly installed on the press frame, main compression roller and auxiliary compression roller are rotatably installed between two groups of support seat respectively, two compression roller driving mechanisms are fixedly installed on press frame, are used to drive main compression roller and auxiliary compression roller rotation respectively, two groups of pressure regulating pistons are fixedly installed between press frame and the support seat of main compression roller, for adjusting the overall pressure of main compression roller, the mounting sleeve is fixedly installed in pressing chamber and is set in the outside of main compression roller and keeps concentric, the end of the mounting sleeve close to auxiliary compression roller is provided with notch, a plurality of detection holes are formed in the upper side of the mounting sleeve notch, matching rubber profile prediction piece is movably installed in the detection hole.

[0005] As a further improvement of the present application, the outer surface of the main compression roller is provided with a plurality of detection grooves arranged in a ring array along the axial direction, and the number of each group of detection grooves is consistent with the number of rubber profile prediction pieces. A matching pressure feedback piece is fixedly installed in the detection groove. The pressure feedback piece is used to dynamically capture the contact pressure of each area of the rubber product during pressing. Once the contact pressure distribution is abnormal, a certain magnetic field is applied by the corresponding pressure feedback piece, thereby triggering local pressure adjustment, ensuring that the rubber product will not be damaged due to overpressure, and also preventing problems such as lack of glue and poor bonding due to insufficient pressure. The pressing quality and performance of the rubber product are improved.

[0006] As a further improvement of the present application, the pressure feedback piece includes a magnetic shielding half-sleeve fixedly installed in the detection groove. An electromagnet is fixedly installed on the inner side of the magnetic shielding half-sleeve. A pressure sensor is fixedly installed on the outer surface of the electromagnet. A wear-resistant probe is fixedly installed on the outer surface of the pressure sensor, and the wear-resistant probe extends out of the detection groove. The wear-resistant probe directly contacts the surface of the rubber product to feed the contact pressure to the pressure sensor for measurement. Then, the measured pressure is converted into an electrical signal, and the corresponding magnetic field is applied by the electromagnet to act on the local pressure adjustment. The magnetic shielding half-sleeve prevents mutual interference between magnetic fields.

[0007] As a further improvement of the present application, the outer surface of the auxiliary compression roller is provided with a plurality of compensation grooves arranged in a ring array, and the number of compensation grooves is consistent with the number of groups of detection grooves. A magnetic compensation piece is fixedly installed in the compensation groove. The magnetic compensation piece is used to cooperate with the magnetic field of the pressure feedback piece to realize local dynamic pressure compensation, ensuring that the pressure distribution of the rubber product during pressing is uniform and normal.

[0008] As a further improvement of the present application, the magnetic compensation piece comprises a plurality of inner skeletons, the outer ends of the inner skeletons are fixedly installed with magnetic compensation strips, the number of the magnetic compensation strips is consistent with the number of each group of pressure feedback pieces, the inner skeletons are fixedly installed with elastic reset pieces between the compensation grooves, the outer surfaces of the plurality of magnetic compensation strips are commonly connected with surface protection pads, and the surface protection pads are flush with the openings of the compensation grooves, when the local contact pressure measured by the pressure sensor is too large, the control electromagnet applies a repulsive magnetic field to the magnetic compensation strip, thereby reducing the pressure on the rubber product in this area, when the local contact pressure measured by the pressure sensor is too small, the control electromagnet applies an adsorbing magnetic field to the magnetic compensation strip, thereby enhancing the pressure on the rubber product in this area, and the surface protection pad plays a role in protecting the rubber product from wear.

[0009] As a further improvement of the present application, the rubber profile prediction piece comprises a carrier plate, the two ends of the carrier plate are fixedly connected with pre-tightening pieces between the pre-detection grooves, and the pre-tightening pieces provide pre-tightening force to the carrier plate away from the pressure feedback pieces, the inner surface of the carrier plate is in an arc shape matching the outer surface of the main pressure roller, and the outer surface of the carrier plate is in a vertical plane shape, the carrier plate can measure the flatness of the rubber product in advance, due to the pre-tightening force of the pre-tightening pieces, the carrier plate always has a tendency to adhere to the surface of the rubber product, when local depressions or protrusions are detected, the detection feedback and magnetic field driving program of the pressure feedback piece are triggered in advance, which not only saves response time, but also avoids stress damage to the rubber product caused by sharp changes in pressure adjustment, so that the pressure adjustment has a certain gradient level, thereby ensuring the final pressing effect.

[0010] As a further improvement of the present application, the outer surface of the carrier plate is fixedly installed with a plurality of uniformly distributed guide sleeves, the inner side of the guide sleeve is slidingly installed with a matching detection probe rod, the detection probe rod is fixedly connected with a pre-tightening spring between the carrier plate, and the pre-tightening spring provides pre-tightening force to the detection probe rod away from the carrier plate, through the distribution detection of the detection probe rod, the detection accuracy of local depressions and protrusions can be improved.

[0011] As a further improvement of the present application, the detection probe rod is fixedly connected with a heating surface at the end away from the carrier plate, and an electric heating element is inlaidly installed in the inner end of the detection probe rod, through the cooperation of the heating surface and the electric heating element, the rubber can be preheated in advance when needed, so that it can reach the required temperature during pressing, and the high-temperature influence on the pressure feedback piece and other structures is avoided.

[0012] As a further improvement of the present application, the width of the carrier plate is greater than the width of the wear-resistant probe, ensuring that the wear-resistant probe and the carrier plate maintain a normal pressure relationship and that the pressure is constant without being disturbed by other areas. The outer surface of the heating surface is on the same level as the vertical tangent of the inner side of the main pressure roller, and the heating surface can detect the flatness of the rubber. The pressure feedback indirectly measured by measuring the concave and convex is close to and slightly less than the actual contact pressure, so that the magnetic field compensation pressure can be triggered in advance, and the gradient level of pressure compensation is formed. The distance from the carrier plate to the notch is less than the width of the carrier plate, ensuring that the pressure feedback can smoothly trigger the magnetic field compensation pressure action in advance.

[0013] As a further improvement of the present application, the pressure roller driving mechanism includes a driving motor, the output end of the driving motor is connected with a speed reducer through a shaft coupling, the output end of the speed reducer is connected with a connecting shaft, and the connecting shaft is used for connecting the main pressure roller or the auxiliary pressure roller. Two bearing seats are also fixedly installed on the press frame, and the connecting shaft is rotatably installed on the bearing seats. The speed reduction effect is achieved through the speed reducer, and the bearing seat is used for improving the rotation stability.

[0014] Compared with the prior art, the present application has the following advantages: (1) Compared with the existing press with a fixed pressure roller structure, the present application can realize real-time monitoring and dynamic compensation of local pressure during the pressing process of the rubber product through the cooperation of the pressure feedback element and the magnetic compensation element. The pressure sensor can accurately capture the subtle contact pressure changes in each area. The electromagnet and the magnetic compensation strip can quickly adjust the local pressing force in an instant through magnetic field interaction. Whether it is a local over-thickness of the rubber product leading to pressure concentration or a local over-thickness leading to insufficient pressure, a prompt response can be made to avoid overpressure damage or insufficient pressure and other problems, significantly improving the pressing quality of the rubber product and ensuring the consistency and stability of the product quality; (2) Compared with the existing press, the rubber profile prediction element in the present application can detect the flatness of the rubber surface in advance and efficiently. The reasonable distribution of the detection probe greatly improves the detection accuracy of local concave and convex. The ingenious design of the pre-tightening piece and the pre-tightening spring ensures that the carrier plate and the detection probe always maintain the tendency of adhering to the rubber surface. The pressure feedback and magnetic field driving program are triggered in advance, effectively avoiding the problem of pressure regulation lag in traditional devices, and realizing the gradient level of pressure regulation, making the pressure change more stable and gentle, and avoiding rubber stress damage caused by sudden pressure changes. The stability and reliability of the pressing process are improved in all directions. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a structural schematic diagram of the present application; Figure 2 The figure is a structural schematic diagram of the pressure roller driving mechanism part of the present application; Figure 3 Structure diagram of the pressing chamber part of the present application; Figure 4 Structure diagram of the main pressing roller and the auxiliary pressing roller of the present application; Figure 5 Structure diagram of the main pressing roller and the mounting sleeve of the present application; Figure 6 Structure diagram of the magnetic compensation member of the present application; Figure 7 Structure diagram of the pressure feedback member of the present application; Figure 8 Sectional view of the rubber profile prediction member of the present application.

[0016] Explanation of the figure labels: 1, press frame; 2, pressure feedback member; 201, magnetic shielding half sleeve; 202, electromagnet; 203, pressure sensor; 204, wear-resistant probe; 3, pressing roller driving mechanism; 301, driving motor; 302, shaft coupling; 303, speed reducer; 304, bearing seat; 305, connecting shaft; 4, support seat; 5, magnetic compensation member; 501, inner framework; 502, magnetic compensation strip; 503, elastic return member; 504, surface protection pad; 6, main pressing roller; 7, auxiliary pressing roller; 8, mounting sleeve; 9, rubber profile prediction member; 901, carrier plate; 902, pre-tightening piece; 903, guide sleeve; 904, detection probe; 905, pre-tightening spring; 906, heating surface; 907, electric heating element; 10, pressure adjusting piston; 11, feeding port; 12, discharging port; 13, pressing chamber. DETAILED DESCRIPTION

[0017] The technical solutions of the present application will be described clearly and completely below in combination with the drawings of the present application; obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application are within the protection scope of the present application.

[0018] Embodiment one: Please refer to Figures 1-7The utility model provides a kind of rubber product processing press device, including press frame 1, two compression roller driving mechanisms 3, two groups of pressure regulating pistons 10, press frame 1 inside is provided with press chamber 13, press frame 1 upper and lower ends are provided with feeding port 11 and discharge port 12 respectively, press frame 1 is fixedly installed with two groups of support seat 4, two groups of support seat 4 are rotatably installed with main compression roller 6 and auxiliary compression roller 7 between respectively, two compression roller driving mechanisms 3 are fixedly installed on press frame 1, are respectively used to drive main compression roller 6 and auxiliary compression roller 7 rotation, two groups of pressure regulating pistons 10 are fixedly installed between press frame 1 and the support seat 4 of installation main compression roller 6, for adjusting the overall pressure of main compression roller 6.

[0019] Press frame 1 is welded by high-strength carbon steel, and the inside is hollow to form a press chamber 13. The upper and lower ends are respectively provided with a feeding port 11 and a discharge port 12 for conveying rubber products. The two groups of support seats 4 fixedly installed on the press frame 1 are made of aluminum alloy and connected to the press frame 1 by bolts, combining strength and lightweight features. The main compression roller 6 and the auxiliary compression roller 7 are made of high-hardness alloy steel, with chrome plating on the surface to enhance wear resistance. They are rotatably installed between the support seats 4 through bearings, forming a press working area.

[0020] The two groups of pressure regulating pistons 10 are installed between the press frame 1 and the support seat 4. The pressure regulating piston 10 adopts a pneumatic piston structure, with a stainless steel piston cylinder and fluororubber internal seals, capable of withstanding high pressure and adapting to temperature changes in the rubber processing environment. The pressure regulating piston 10 adjusts the overall pressure of the main compression roller 6 through air pressure, achieving initial pressure setting for rubber products of different thicknesses.

[0021] The main compression roller 6 has a plurality of detection grooves arranged in a ring array on its outer surface along the axial direction, and the number of each detection groove is consistent with the number of rubber profile prediction pieces 9. A matching pressure feedback piece 2 is fixedly installed in each detection groove. The pressure feedback piece 2 is used to dynamically capture the contact pressure of each area of the rubber product during pressing. Once the contact pressure distribution is abnormal, a certain magnetic field is applied by the corresponding pressure feedback piece 2, triggering local pressure adjustment, ensuring that the rubber product will not be damaged due to overpressure, and will not have problems such as lack of glue and poor bonding due to insufficient pressure, improving the pressing quality and performance of the rubber product.

[0022] The pressure feedback piece 2 comprises a magnetic shielding half cover 201 fixedly installed in the detection groove, an electromagnet 202 fixedly installed on the inner side of the magnetic shielding half cover 201, a pressure sensor 203 fixedly installed on the outer surface of the electromagnet 202, and a wear-resistant probe 204 fixedly installed on the outer surface of the pressure sensor 203 and extending out of the detection groove. The wear-resistant probe 204 directly contacts the surface of the rubber product to feed back the contact pressure to the pressure sensor 203 for measurement, then converts the measured pressure into an electric signal, and applies a corresponding magnetic field to the local pressure adjustment through the electromagnet 202. The magnetic shielding half cover 201 prevents mutual interference between magnetic fields.

[0023] A plurality of detection grooves are formed on the outer surface of the main compression roller 6 in the axial direction, and a pressure feedback piece 2 is installed in each detection groove. The magnetic shielding half cover 201 of the pressure feedback piece 2 is made of soft magnetic material, which can effectively isolate the magnetic field interference of adjacent electromagnets 202. The electromagnet 202 has a ring structure and is wound with enameled wire. After being powered on, it generates a controllable magnetic field. The pressure sensor 203 is selected from a resistance strain sensor, which is covered with a wear-resistant probe 204 made of hard alloy and can directly contact the surface of the rubber product to convert the contact pressure into an electric signal. A plurality of compensation grooves are formed on the outer surface of the auxiliary compression roller 7 in a ring array, and the number of compensation grooves is consistent with the number of detection grooves. A magnetic compensation piece 5 is fixedly installed in each compensation groove. The magnetic compensation piece 5 is used to cooperate with the magnetic field of the pressure feedback piece 2 to realize local dynamic pressure compensation, so as to ensure that the pressure distribution of the rubber product is uniform and normal during compression.

[0024] The magnetic compensation piece 5 comprises a plurality of inner skeletons 501, a magnetic compensation strip 502 fixedly installed on the outer end of each inner skeleton 501, and a plurality of elastic return pieces 503 fixedly installed between the inner skeletons 501 and the compensation grooves. A surface protection pad layer 504 is connected to the outer surfaces of the magnetic compensation strips 502. When the pressure sensor 203 measures that the local contact pressure is too large, the electromagnet 202 applies a repulsive magnetic field to the magnetic compensation strip 502, thereby reducing the pressure on the rubber product in this area. When the pressure sensor 203 measures that the local contact pressure is too small, the electromagnet 202 applies an attractive magnetic field to the magnetic compensation strip 502, thereby increasing the pressure on the rubber product in this area. The surface protection pad layer 504 protects the rubber product from being worn.

[0025] The magnetic compensation member 5 is installed in the compensation groove on the outer surface of the auxiliary compression roller 7, the inner skeleton 501 is an aluminum alloy frame, the magnetic compensation strip 502 is fixed on the outer side, the material is a neodymium iron boron permanent magnet, and the magnetic compensation strip 502 has high residual magnetism and coercive force. The elastic reset member 503 is made of spring steel, and provides a reset force for the magnetic compensation strip 502. The surface protection pad 504 is a silicone rubber layer, and has uniform thickness, which can protect the surface of the rubber product from wear.

[0026] The compression roller driving mechanism 3 comprises a driving motor 301, the output end of the driving motor 301 is connected with a speed reducer 303 through a shaft coupling 302, the output end of the speed reducer 303 is connected with a connecting shaft 305, the connecting shaft 305 is used for connecting the main compression roller 6 or the auxiliary compression roller 7, two bearing seats 304 are also fixedly installed on the press frame 1, and the connecting shaft 305 is rotatably installed on the bearing seat 304, the speed reduction effect is realized through the speed reducer 303, and the bearing seat 304 is used for improving the rotation stability.

[0027] Embodiment two: Please refer to Figure 4 、 Figure 5 、 Figure 8 , on the basis of embodiment 1, the structure such as the mounting sleeve 8 is increased, the mounting sleeve 8 is fixedly installed in the compression chamber 13 and is coaxially arranged on the outer side of the main compression roller 6, a notch is formed in one end of the mounting sleeve 8 close to the auxiliary compression roller 7, the mounting sleeve 8 is integrally formed by using polyether ether ketone (PEEK) engineering plastic, has high strength, wear resistance and high temperature resistance. The mounting sleeve 8 is fixedly installed in the inner wall of the compression chamber 13 through circumferentially distributed bolt groups, the coaxiality error between the inner hole and the outer circle of the main compression roller 6 is ≤0.05mm, and the radial clearance between the two is uniform. The notch width is 2-5mm larger than the minimum compression gap between the main compression roller 6 and the auxiliary compression roller 7, so as to avoid interference with the rubber product conveying. A plurality of detection holes are formed in the upper side of the notch of the mounting sleeve 8, and a matching rubber profile prediction member 9 is movably installed in the detection hole. The rubber profile prediction member 9 comprises a carrier plate 901, pre-tightening pieces 902 are fixedly connected between both ends of the carrier plate 901 and the pre-detection groove, and the pre-tightening pieces 902 provide a pre-tightening force away from the pressure feedback member 2 to the carrier plate 901. The inner surface of the carrier plate 901 is in an arc surface shape matched with the outer surface of the main compression roller 6, and the outer surface of the carrier plate 901 is in a vertical plane shape. The carrier plate 901 can measure the flatness of the rubber product in advance. Due to the pre-tightening force of the pre-tightening pieces 902, the carrier plate 901 always has a tendency to adhere to the surface of the rubber product. When local concave or convex is detected, the detection feedback of the pressure feedback member 2 and the magnetic field driving program are triggered in advance. Not only the response time can be saved, but also the stress damage of the rubber product caused by the sharp change of the pressure adjustment can be avoided, so that the pressure adjustment has a certain gradient level, thereby ensuring the final compression effect.

[0028] The curvature radius deviation of the inner arc surface of the carrier plate 901 and the outer circle of the main compression roller 6 is less than or equal to 0.1 mm, and the outer flatness error is less than or equal to 0.02 mm / m, which ensures the fitting accuracy. The two ends are connected with the pre-tightening sheet 902 in the detection hole through the dovetail groove structure. The pre-tightening sheet 902 is a 65Mn spring steel sheet with a thickness of 0.5-1 mm. After heat treatment, the elastic modulus is stable, and a pre-tightening force of 0.5-1 N / mm is provided, so that the carrier plate 901 always maintains the tendency to fit the surface of the rubber.

[0029] A plurality of guide sleeves 903 are fixedly installed on the outer surface of the carrier plate 901, and matching detection probes 904 are slidably installed in the inner side of the guide sleeves 903. The detection probes 904 and the carrier plate 901 are fixedly connected with a pre-tightening spring 905, which provides a pre-tightening force away from the carrier plate 901 to the detection probes 904. Through the distribution detection of the detection probes 904, the detection accuracy of local depressions and protrusions can be improved.

[0030] The detection probes 904 are fixedly connected with a heating surface 906 at one end away from the carrier plate 901, and an electric heating element 907 is embeddedly installed in the inner end of the detection probes 904. Through the cooperation of the heating surface 906 and the electric heating element 907, the rubber can be preheated in advance when needed, so that it can reach the required temperature during compression, and at the same time, the high temperature influence on the pressure feedback member 2 and other structures is avoided.

[0031] The heating surface 906 is a copper-based alloy plating layer with a thickness of 0.3-0.5 mm, and the electric heating element 907 is a thin film type resistance heating sheet with a power of 5-10 W and a temperature control accuracy of ±2℃. The heating area covers a range of 5 mm in front of the detection probes 904.

[0032] The width of the carrier plate 901 is greater than the width of the wear-resistant probe 204, so that the normal pressure relationship between the wear-resistant probe 204 and the carrier plate 901 is maintained, and the constant pressure condition is not disturbed by other areas. The outer surface of the heating surface 906 and the vertical tangent of the inner side of the main compression roller 6 are located on the same horizontal plane. The heating surface 906 can detect the flatness of the rubber, and the pressure feedback through the measurement of depressions and protrusions is close to and slightly less than the actual contact pressure. In this way, not only can the magnetic field compensation pressure be triggered in advance, but also a gradient level of pressure compensation can be formed. The distance from the carrier plate 901 to the gap is less than the width of the carrier plate 901, so that the pressure feedback member 2 can smoothly trigger the magnetic field compensation pressure action in advance.

[0033] Working principle: Pre-treatment detection and signal transmission: After the rubber product enters the press frame 1 from the feed port 11, it first contacts the rubber profile prediction piece 9. The carrier plate 901 closely adheres to the surface of the rubber product under the pre-tightening force of the pre-tightening piece 902, and the detection probe 904 deeply contacts the rubber surface under the pushing force of the pre-tightening spring 905. When there is a local depression on the rubber surface, the detection probe 904 at the corresponding position will protrude outward under the action of the pre-tightening spring 905, and when it encounters a protrusion, it will shrink inward. This displacement change is converted into an electrical signal by the carrier plate 901 and transmitted to the control system. At the same time, the electric heating element 907 preheats the rubber surface through the heating surface 906, so that the rubber material reaches a temperature state conducive to compression in advance, laying the foundation for the subsequent compression process, because part of the rubber material needs to rely on heat to improve the connection effect when it is compressed with other products, and part of the rubber material can be compressed with other products by applying pressure at room temperature. Pressure compensation advance trigger: After the control system receives the pre-treatment detection signal, it sends pre-adjustment instructions to the corresponding area of the pressure feedback piece 2 according to the concave-convex distribution of the rubber surface profile. Because the distance from the carrier plate 901 to the gap is less than its width, when the rubber product enters the compression area from the pre-detection area, the pressure feedback piece 2 on the main compression roller 6 has received the advance trigger signal. At this time, the electromagnet 202 in the pressure feedback piece 2 begins to pre-load the magnetic field, preparing for the upcoming compression process and avoiding the problem of pressure adjustment lag in traditional devices. Gradient pressure regulation and dynamic monitoring: The main compression roller 6 and the auxiliary compression roller 7 rotate under the drive of the compression roller drive mechanism 3, and the rubber product enters the compression area. The wear-resistant probe 204 contacts the rubber surface, and the pressure sensor 203 detects the contact pressure of each area in real time and feeds back to the control system. The control system combines the pre-treatment detection advance trigger signal to adjust the pressure in a gradient: in the initial stage, the basic compensation pressure is applied according to the pre-treatment result, and as the compression process progresses, the magnetic field strength of the electromagnet 202 is gradually adjusted according to the real-time data of the pressure sensor 203. If the pressure is too large, the electromagnet 202 enhances the repulsive magnetic field, pushing the magnetic compensation strip 502 to shrink into the compensation slot, gradually reducing the pressure in that area; if the pressure is insufficient, the attractive magnetic field is enhanced, causing the magnetic compensation strip 502 to gradually extend with the cooperation of the elastic reset piece 503, increasing the pressure. This gradient adjustment method avoids the stress damage to the rubber caused by sudden changes in pressure. Overall pressure coordination and discharge: At the same time of local gradient pressure regulation, the pressure regulation piston 10 adjusts the overall pressure of the main compression roller 6 according to the overall thickness of the rubber product in real time, ensuring that the overall pressure and the local compensation pressure work together. After a series of accurate pre-treatment detection, advance trigger compensation and gradient pressure regulation, the rubber product completes high-quality compression between the main compression roller 6 and the auxiliary compression roller 7, and is finally output from the discharge port 12 to enter the next processing link.

[0034] It should be noted that the control system can directly apply the controller on the existing press, and control by wireless connection, or integrate a microcontroller on the pressure sensor 203, and then control the magnetic field of the electromagnet 202.

[0035] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive.

[0036] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A pressing device for processing rubber products, characterized in that: include: A press frame (1) is provided with a pressing chamber (13) inside the press frame (1). The upper and lower ends of the press frame (1) are respectively provided with a feed inlet (11) and a discharge outlet (12). Two sets of support seats (4) are fixedly installed on the press frame (1). A main pressure roller (6) and an auxiliary pressure roller (7) are rotatably installed between the two sets of support seats (4). Two pressure roller drive mechanisms (3) are fixedly installed on the press frame (1) and are used to drive the main pressure roller (6) and the auxiliary pressure roller (7) to rotate respectively; Two sets of pressure regulating pistons (10) are fixedly installed between the press frame (1) and the support seat (4) on which the main pressure roller (6) is installed, for adjusting the overall pressure of the main pressure roller (6); The mounting sleeve (8) is fixedly installed inside the pressing chamber (13) and sleeved on the outside of the main pressure roller (6) to maintain concentricity. The mounting sleeve (8) has a notch at one end near the auxiliary pressure roller (7). Multiple detection holes are opened on the upper side of the notch of the mounting sleeve (8). Matching rubber contour prediction parts (9) are movably installed in the detection holes.

2. The pressing device for processing rubber products according to claim 1, characterized in that: The outer surface of the main pressure roller (6) is provided with multiple sets of detection grooves arranged in a ring array along the axial direction, and the number of each set of detection grooves is consistent with the number of rubber profile prediction parts (9). A matching pressure feedback part (2) is fixedly installed in the detection groove.

3. The pressing device for processing rubber products according to claim 2, characterized in that: The pressure feedback component (2) includes a magnetic shielding half-sleeve (201) fixedly installed in the detection groove. An electromagnet (202) is fixedly installed inside the magnetic shielding half-sleeve (201). A pressure sensor (203) is fixedly installed on the outer surface of the electromagnet (202). A wear-resistant probe (204) is fixedly installed on the outer surface of the pressure sensor (203), and the wear-resistant probe (204) extends out of the detection groove.

4. The pressing device for processing rubber products according to claim 3, characterized in that: The auxiliary pressure roller (7) has multiple compensation grooves arranged in a ring array on its outer surface, and the number of compensation grooves is consistent with the number of detection grooves. Magnetic compensation components (5) are fixedly installed in the compensation grooves.

5. A pressing device for processing rubber products according to claim 4, characterized in that: The magnetic compensation component (5) includes multiple inner skeletons (501), and magnetic compensation strips (502) are fixedly installed on the outer ends of the inner skeletons (501). The number of magnetic compensation strips (502) is consistent with the number of each pressure feedback component (2). An elastic reset component (503) is fixedly installed between the inner skeleton (501) and the compensation groove. The outer surfaces of the multiple magnetic compensation strips (502) are connected to a surface protective pad (504), and the surface protective pad (504) is flush with the opening of the compensation groove.

6. The pressing device for processing rubber products according to claim 5, characterized in that: The rubber profile prediction component (9) includes a carrier plate (901), and pre-tightening plates (902) are fixedly connected between the two ends of the carrier plate (901) and the pre-inspection groove. The pre-tightening plates (902) provide a pre-tightening force to the carrier plate (901) away from the pressure feedback component (2). The inner surface of the carrier plate (901) is an arc shape that matches the outer surface of the main pressure roller (6), and the outer surface of the carrier plate (901) is a vertical plane shape.

7. A pressing device for processing rubber products according to claim 6, characterized in that: Multiple evenly distributed guide sleeves (903) are fixedly installed on the outer surface of the carrier plate (901). Matching detection probes (904) are slidably installed on the inner side of the guide sleeves (903). A pre-tightening spring (905) is fixedly connected between the detection probes (904) and the carrier plate (901). The pre-tightening spring (905) provides a pre-tightening force to the detection probes (904) away from the carrier plate (901).

8. A pressing device for processing rubber products according to claim 7, characterized in that: The detection probe (904) has a heating surface (906) fixedly connected to one end away from the carrier plate (901), and an electric heating element (907) is embedded in the inner end of the detection probe (904).

9. A pressing device for processing rubber products according to claim 8, characterized in that: The width of the carrier plate (901) is greater than the width of the wear-resistant probe (204). The outer surface of the heating surface (906) and the inner vertical tangent of the main pressure roller (6) are on the same horizontal plane. The distance from the carrier plate (901) to the notch is less than the width of the carrier plate (901).

10. A pressing device for processing rubber products according to claim 1, characterized in that: The pressure roller drive mechanism (3) includes a drive motor (301). The output end of the drive motor (301) is connected to a reducer (303) via a coupling (302). The output end of the reducer (303) is connected to a connecting shaft (305). The connecting shaft (305) is used to connect the main pressure roller (6) or the auxiliary pressure roller (7). Two bearing seats (304) are also fixedly installed on the press frame (1), and the connecting shaft (305) is rotatably installed on the bearing seats (304).

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