Pressure equalization mechanism of cold bending forming equipment based on hydraulic buffering

Abstract

This utility model discloses a pressure equalization mechanism for a cold bending forming equipment based on hydraulic buffering. It includes an adjusting seat mounted on the base of the main body of the equipment, with a lifting assembly on top. Above the adjusting seat is a contact assembly that can fit against the upper mold of the main body of the equipment. The contact assembly is located on top of the lifting assembly, and a guide assembly is located within the inner cavity of the adjusting seat. Through a closed-loop connection between a hydraulic cylinder drive and a pressure transmitter and flow control valve in the hydraulic pipeline, it can respond in real time to pressure fluctuations during the cold bending forming process and dynamically adjust the pressure distribution in each area. Compared to the traditional manual adjustment method using mechanical bolts, it avoids local overpressure or underpressure problems caused by uneven sheet thickness and differences in incoming material hardness, ensuring uniform stress across the entire cross-section of the sheet material and fundamentally reducing forming defects such as profile dimensional deviations and surface wrinkling. Simultaneously, the integrated design of the hydraulic pipeline and the hydraulic system of the main body of the equipment simplifies the control logic, reduces debugging difficulty, and is more conducive to industrial production applications.

Description

Technical Field

[0001] This utility model relates to the field of cold bending forming equipment technology, and in particular to a pressure equalization mechanism for cold bending forming equipment based on hydraulic buffer. Background Technology

[0002] As the core equipment for metal sheet processing, cold bending forming equipment uses continuous rolling or molding processes to cold bend sheets into angle steel, channel steel, and irregular cross-section profiles, which are widely used in construction, automobiles, rail transportation and other fields.

[0003] During the forming process, the uniformity of pressure distribution on the sheet material by the upper and lower dies directly determines the dimensional accuracy, surface quality, and mechanical properties of the profile.

[0004] Traditional cold bending forming equipment suffers from insufficient pressure adjustment precision, relying heavily on manual adjustment with mechanical bolts. This makes it difficult to respond in real time to fluctuations in sheet thickness or differences in incoming material hardness, resulting in dimensional deviations in the same batch of profiles.

[0005] To address this, a pressure equalization mechanism for cold bending forming equipment based on hydraulic buffering is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a pressure equalization mechanism for cold bending forming equipment based on hydraulic buffering, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A pressure equalization mechanism for a cold bending forming equipment based on hydraulic buffering includes an adjusting seat mounted on the base of the equipment body, on which a lifting assembly is mounted. Above the adjusting seat is a contact assembly capable of engaging with the upper mold of the equipment body. The contact assembly is located at the top of the lifting assembly. The inner cavity of the adjusting seat is provided with a guide assembly. Wherein:

[0009] The lifting assembly includes a hydraulic cylinder installed at the bottom of the inner cavity of the adjusting seat. The output end of the hydraulic cylinder is fixedly connected to an adjusting column, and the top end of the adjusting column extends movably through to the top of the adjusting seat and is connected to a contact assembly.

[0010] As a preferred technical solution, the contact component includes an equalizing top block rotatably connected to the top of the adjusting column, and a wear-resistant pad is fixedly connected to the surface of the equalizing top block.

[0011] As a preferred technical solution, the equalizing top block has a hemispherical structure and is adapted to the upper mold of the main body of the equipment, and the wear-resistant pad is a polytetrafluoroethylene wear-resistant pad.

[0012] As a preferred technical solution, a radial joint bearing is provided at the rotational connection between the equalizing top block and the adjusting column. The inner ring of the bearing is interference-fitted with the adjusting column, and the outer ring is fixedly connected to the equalizing top block.

[0013] As a preferred technical solution, the guide assembly includes a limiting ring fixedly connected to the lower part of the surface of the adjusting column, and the limiting ring is slidably connected to the inner wall surface of the adjusting seat.

[0014] As a preferred technical solution, the surface of the limiting ring is provided with a groove, and a protrusion is slidably connected to the inner cavity of the groove, and the protrusion is fixedly connected to the inner wall surface of the adjusting seat.

[0015] As a preferred technical solution, the top of the adjusting seat is provided with a through hole for the adjusting column to pass through.

[0016] As a preferred technical solution, the hydraulic cylinder is connected to the hydraulic system of the main body of the equipment through a hydraulic pipeline, and a pressure transmitter and a flow control valve are installed on the hydraulic pipeline.

[0017] As a preferred technical solution, the base of the main body of the equipment is provided with an installation groove that matches the adjustment seat, and the adjustment seat is fixedly connected to the inner cavity of the installation groove.

[0018] As a preferred technical solution, the mounting slots are arranged symmetrically in two sets on the base of the main body of the equipment. Each set of mounting slots has multiple slots evenly distributed along the length of the lower mold of the main body of the equipment. One adjustment seat is installed in the inner cavity of each mounting slot.

[0019] This utility model has at least the following beneficial effects:

[0020] This application utilizes a closed-loop mechanism between a hydraulic cylinder drive and a pressure transmitter and flow control valve in the hydraulic pipeline to respond in real time to pressure fluctuations during the cold bending process and dynamically adjust the pressure distribution in different areas. Compared to the manual adjustment method using traditional mechanical bolts, this avoids localized overpressure or underpressure issues caused by uneven sheet thickness or differences in incoming material hardness, ensuring uniform stress across the entire cross-section of the sheet and fundamentally reducing forming defects such as dimensional deviations and surface wrinkling. Furthermore, the integrated design of the hydraulic pipeline and the main hydraulic system simplifies the control logic, reduces debugging difficulty, and is more conducive to industrial production applications. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention and the main body of the equipment;

[0022] Figure 2 This is a partial structural schematic diagram of the present invention and the main body of the equipment;

[0023] Figure 3This is a cross-sectional view of the structure of this utility model.

[0024] In the diagram: 1. Main body of the equipment; 2. Mounting slot; 100. Adjusting seat; 200. Lifting assembly; 210. Hydraulic cylinder; 220. Adjusting column; 300. Contact assembly; 310. Equalizing top block; 320. Wear-resistant pad; 400. Guide assembly; 410. Limiting ring; 420. Groove; 430. Raised strip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-3 This utility model provides a pressure equalization mechanism for a cold bending forming equipment based on hydraulic buffering, including an adjusting seat 100 on the base of the equipment body 1, a lifting component 200 with a contact component 300 that can fit with the upper mold of the equipment body 1, and a guide component 400. The lifting component 200 is located on the adjusting seat 100, the contact component 300 is located on the top of the lifting component 200 and above the adjusting seat 100, and the guide component 400 is located in the inner cavity of the adjusting seat 100. The lifting component 200 includes a hydraulic cylinder 210 installed at the bottom of the inner cavity of the adjusting seat 100. The output end of the hydraulic cylinder 210 is fixedly connected to an adjusting column 220, and the top end of the adjusting column 220 extends movably through to the top of the adjusting seat 100 and is connected to the contact component 300.

[0027] The contact component 300 includes an equalizing top block 310 rotatably connected to the top of the adjusting column 220, and a wear-resistant pad 320 is fixedly connected to the surface of the equalizing top block 310. The combination of the equalizing top block 310 and the wear-resistant pad 320 in the contact component 300 can, on the one hand, adapt to the slight tilt of the upper mold through the rotatable connection and ensure contact stability; on the other hand, the wear-resistant pad 320 reduces the wear of the upper mold and the equalizing top block 310 and extends the service life of both.

[0028] Among them, the equalizing top block 310 has a hemispherical structure and is adapted to the upper mold of the main body 1 of the equipment. The wear-resistant pad 320 is a polytetrafluoroethylene wear-resistant pad. The hemispherical equalizing top block 310 has an enlarged adaptation tilt angle, which can cope with the large tilt of the upper mold caused by installation errors or stress deformation, ensuring that the pressure transmission path is always perpendicular to the contact surface and avoiding local stress concentration.

[0029] The balancing top block 310 and the adjusting column 220 are connected by a radial joint bearing. The inner ring of the bearing is interference-fitted with the adjusting column 220, and the outer ring is fixedly connected to the balancing top block 310. The interference fit and fixed connection design of the radial joint bearing enables the balancing top block 310 to rotate freely 360 degrees while ensuring pressure transmission efficiency and solving the problem of force transmission lag caused by gaps in traditional hinge connections.

[0030] The guide assembly 400 includes a limiting ring 410 fixedly connected to the lower part of the surface of the adjusting column 220. The limiting ring 410 is slidably connected to the inner wall of the adjusting seat 100. The sliding fit between the limiting ring 410 and the inner wall of the adjusting seat 100 restricts the radial displacement of the adjusting column 220, ensures that the output force of the hydraulic cylinder 210 is transmitted axially, and reduces pressure detection error.

[0031] The limiting ring 410 has a groove 420 on its surface, and a protrusion 430 is slidably connected to the inner cavity of the groove 420. The protrusion 430 is fixedly connected to the inner wall of the adjusting seat 100. The sliding guide structure of the groove 420 and the protrusion 430 further constrains the circumferential rotation of the adjusting column 220 and improves the linearity of pressure adjustment.

[0032] The top of the adjusting seat 100 has a through hole for the adjusting column 220 to pass through; the through hole at the top of the adjusting seat 100 provides a stable lifting channel for the adjusting column 220, reduces the lifting resistance of the adjusting column 220, and improves the response speed.

[0033] The hydraulic cylinder 210 is connected to the hydraulic system of the main body 1 of the equipment through a hydraulic pipeline. A pressure transmitter and a flow control valve are installed on the hydraulic pipeline. The hydraulic pipeline integrates the pressure transmitter and the flow control valve to realize real-time pressure detection and precise flow control, providing data support for closed-loop regulation and solving the problem of pressure feedback lag in traditional equipment.

[0034] The equipment body 1 has a mounting groove 2 on its base that is compatible with the adjusting seat 100. The adjusting seat 100 is fixedly connected to the inner cavity of the mounting groove 2. The mounting groove 2 of the base of the equipment body 1 is designed to enable quick positioning and installation of the adjusting seat 100, enhance the connection rigidity between the adjusting seat 100 and the base, and prevent displacement caused by vibration during operation.

[0035] Among them, there are two sets of mounting slots 2 arranged symmetrically on the base of the main body 1. Each set of mounting slots 2 has multiple slots equidistantly distributed along the length of the lower mold of the main body 1. The adjustment seat 100 is installed in the inner cavity of each mounting slot 2. The symmetrical layout of multiple sets of mounting slots 2 makes the pressure adjustment points evenly distributed along the length of the lower mold, covering the entire cross section of the wide plate, solving the problem that traditional single-point adjustment cannot adapt to long profiles.

[0036] This invention achieves dynamic and balanced pressure adjustment during cold bending by combining hydraulic drive and mechanical guidance. The specific workflow is as follows:

[0037] Initial state: The adjusting seat 100 is fixed to the base of the equipment body 1 through the mounting groove 2, the hydraulic cylinder 210 of the lifting component 200 is in the initial extension state, the contact component 300 at the top of the adjusting column 220 maintains a preset distance from the upper mold of the equipment body 1, the limiting ring 410 of the guide component 400 is located in the lower part of the inner cavity of the adjusting seat 100, and the groove 420 and the protrusion 430 are in the initial mating position.

[0038] Pressure detection and start-up: When the cold bending forming equipment is started, after the sheet material is conveyed to the upper die, when the upper die moves down to near the sheet material, the hydraulic cylinder 210 receives the drive signal of the hydraulic system of the main body 1 through the hydraulic pipeline. The pressure transmitter monitors the pipeline pressure in real time and feeds it back to the control system. The initial pressure parameters are preset according to the material and thickness of the sheet material.

[0039] Dynamic adjustment process:

[0040] The upper mold continues to descend and contacts the equalizing top block 310 of the contact component 300. The hemispherical top block adapts to the slight tilt of the bottom surface of the upper mold through the radial joint bearing, ensuring that the wear-resistant pad 320 fits tightly with the upper mold.

[0041] If the pressure in a certain area deviates from the preset value (e.g., due to excessive pressure caused by local thickening of the plate), the control system adjusts the extension and retraction of the corresponding hydraulic cylinder 210 through the flow control valve: when the pressure is too high, the hydraulic cylinder retracts, driving the adjusting column 220 downward, and reducing the local support force through the equalizing top block 310; when the pressure is too low, the hydraulic cylinder extends, and the adjusting column 220 moves upward, increasing the local support force.

[0042] During adjustment, the limiting ring 410 of the guide assembly 400 slides along the inner wall of the adjustment seat 100, and the cooperation between the groove 420 and the protrusion 430 restricts the radial sway of the adjustment column 220, ensuring that the pressure transmission direction is always perpendicular to the surface of the plate.

[0043] Forming and Resetting: After the sheet metal is cold-bent, the upper mold moves upward, the hydraulic cylinder 210 drives the adjusting column 220 to reset to the initial position, the contact component 300 separates from the upper mold, and waits for the next forming cycle.

[0044] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushioning, characterized by, The device includes an adjustment seat (100) mounted on the base of the main body (1), on which a lifting assembly (200) is mounted. Above the adjustment seat (100) is a contact assembly (300) capable of engaging with the upper mold of the main body (1). The contact assembly (300) is located at the top of the lifting assembly (200). The inner cavity of the adjustment seat (100) is provided with a guide assembly (400). The lifting assembly (200) includes a hydraulic cylinder (210) installed at the bottom of the inner cavity of the adjusting seat (100). The output end of the hydraulic cylinder (210) is fixedly connected to an adjusting column (220). The top end of the adjusting column (220) extends through to the top of the adjusting seat (100) and is connected to the contact assembly (300).

2. The pressure equalization mechanism of a cold roll forming apparatus based on hydraulic buffering according to claim 1, characterized in that: The contact assembly (300) includes an equalizing block (310) rotatably connected to the top of the adjusting column (220), and a wear-resistant pad (320) is fixedly connected to the surface of the equalizing block (310).

3. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushioning according to claim 2, characterized in that: The equalizing top block (310) has a hemispherical structure and is adapted to the upper mold of the main body of the equipment (1). The wear-resistant pad (320) is a polytetrafluoroethylene wear-resistant pad.

4. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushion according to claim 2, wherein: The rotatable connection between the equalizing top block (310) and the adjusting column (220) is provided with a radial joint bearing. The inner ring of the bearing is interference-fitted with the adjusting column (220), and the outer ring is fixedly connected to the equalizing top block (310).

5. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushion according to claim 1, wherein: The guide assembly (400) includes a limiting ring (410) fixedly connected to the lower part of the surface of the adjusting column (220), and the limiting ring (410) is slidably connected to the inner wall surface of the adjusting seat (100).

6. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushioning according to claim 5, wherein: The surface of the limiting ring (410) is provided with a groove (420), and a protrusion (430) is slidably connected to the inner cavity of the groove (420). The protrusion (430) is fixedly connected to the inner wall of the adjusting seat (100).

7. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushion according to claim 1, wherein: The top of the adjusting seat (100) has a through hole through which the adjusting column (220) passes.

8. The pressure equalization mechanism for cold bending forming equipment based on hydraulic buffering according to claim 1, characterized in that: The hydraulic cylinder (210) is connected to the hydraulic system of the main body of the equipment (1) through a hydraulic pipeline, and a pressure transmitter and a flow control valve are installed on the hydraulic pipeline.

9. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushion according to claim 1, wherein: The base of the main body (1) of the equipment is provided with an installation groove (2) that is compatible with the adjustment seat (100), and the adjustment seat (100) is fixedly connected to the inner cavity of the installation groove (2).

10. The pressure equalization mechanism for a cold roll forming apparatus based on hydraulic cushion according to claim 9, wherein: The mounting slots (2) are arranged symmetrically in two groups on the base of the equipment body (1). Each group of mounting slots (2) has multiple slots evenly distributed along the length of the lower mold of the equipment body (1). The adjustment seat (100) is installed in the inner cavity of each mounting slot (2).

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