Two-way pressing die device for flange symmetrical forging

Abstract

The utility model provides flange symmetric forging's two -way pressure mould device relates to the technical field of forging equipment, including frame, L shape support and lower forging pressure subassembly, the frame is by the bottom disc and four vertical guide shafts common welding and is composed, four vertical guide shafts top end welding has the bearing ring, and the center part of bearing ring inside through -hole welds has the shaft ring, lower forging pressure subassembly is by short slide axle and forging disc common welding and is composed, and the limit disc is built -in in the through -hole of bearing ring and is supported in bearing ring top end, and short slide axle and shaft ring penetrate the sliding fit, bearing ring top end welds has the annular forging die of setting up concentric with it, and the upper forging pressure subassembly is slidably installed above annular forging die, L shape support first end and annular forging die weld fixedly, and the horizontal axle section of L shape support is slidably sleeved with sliding assembly. Lower forging pressure subassembly can serve as the ejection unloading part use, and also can serve as the pressure forging part use, has one two -use effect.

Description

Technical Field

[0001] This utility model relates to the field of forging equipment technology, and in particular to a bidirectional pressure die device for symmetrical flange forging. Background Technology

[0002] Forging is a core process in flange production because it can change the internal structure of metal blanks through external force and improve the mechanical properties of flanges. Flange forging equipment is the key carrier for realizing this process.

[0003] In traditional unidirectional pressure processes, the blank is subjected to pressure in only one direction. Uneven force can easily cause metal flow deviation, resulting in problems such as thickness deviation of the upper and lower end faces of the flange, edge warping, or uneven density in the central area. Especially for flanges with large diameters and multiple bolt holes, such deviations will directly affect the sealing performance of subsequent assembly. Utility Model Content

[0004] In view of this, the present invention provides a bidirectional pressure die device for symmetrical flange forging, in order to solve the problems in the traditional unidirectional pressure process, where the billet is only subjected to pressure in one direction, and the uneven force can easily lead to metal flow deviation, resulting in thickness deviation of the upper and lower end faces of the flange, edge warping, or uneven density in the central area.

[0005] The technical solution proposed in this utility model is as follows: a bidirectional pressure die device for symmetrical flange forging, specifically including a frame, an L-shaped support, and a lower forging assembly. The frame is composed of a base and four vertical guide shafts welded together; a bearing ring is welded to the top of each of the four vertical guide shafts, and a collar is welded to the center of the through hole inside the bearing ring; the lower forging assembly is composed of a short sliding shaft and a forging disc welded together, with a limiting disc built into the through hole of the bearing ring and supported on the top of the bearing ring, and the short sliding shaft and the collar slidingly engaging; the top of the bearing ring is welded with... A ring-shaped forging die is concentrically mounted thereon. An upper forging assembly is slidably mounted on top of the ring-shaped forging die. The upper forging assembly is composed of a long sliding shaft and a forging plate welded together. The first end of the L-shaped bracket is welded and fixed to the ring-shaped forging die. A sliding assembly is slidably mounted on the horizontal axis section of the L-shaped bracket. Top-pressing short columns are slidably mounted on four vertical guide shafts. The top-pressing short columns and the long sliding shaft are symmetrically rotatably connected to the sliding assembly by two connecting rods. A hydraulic cylinder is fixedly mounted on one side of the horizontal axis section of the L-shaped bracket. The first end of the hydraulic cylinder piston rod is fixedly connected to the sliding assembly.

[0006] Furthermore, when the forging plate descends and slides to a state flush with the top opening of the annular forging die, the top pressure short column is driven to rise and abut against the short sliding shaft.

[0007] Furthermore, the top of the forging disc is flush with the bottom opening of the annular forging die.

[0008] Furthermore, the tail end of the upper connecting rod is rotatably connected to the top end of the long sliding shaft; The bottom side of the top pressure short column is symmetrically welded with four X-shaped sliding plates. The sliding plates slide with the vertical guide shaft. A connecting shaft is welded between two symmetrically arranged sliding plates at a distance. The tail end of the lower connecting rod is rotatably connected to the connecting shaft.

[0009] Furthermore, the flange blank is placed inside the annular forging die and supported on the top of the forging disc.

[0010] Furthermore, two L-shaped vertical support rods are symmetrically welded to the top of the bearing ring, and a bushing is welded between the top parts of the two L-shaped vertical support rods, with the long sliding shaft and the bushing slidingly engaging.

[0011] Furthermore, a horizontal track shaft is welded to the bottom end of one of the L-shaped vertical support rods, a sliding sleeve is slidably installed on the horizontal track shaft, and a U-shaped pull frame is fixed to the outer periphery of the sliding sleeve, with the U-shaped pull frame fitting into the horizontal track shaft. A limiting plate is fixedly connected to the bottom end of the short sliding shaft. A pull rod is rotatably connected between the limiting plate and the sliding sleeve. A baffle is fixedly connected to the tail end of the horizontal track shaft. A spring is compressed and fitted on the part of the horizontal track shaft located between the baffle and the sliding sleeve.

[0012] The bidirectional pressure die device for symmetrical flange forging provided by this utility model has the following beneficial effects: I. In flange forging, the bidirectional pressure process of symmetrical forging applies pressure to the flange blank simultaneously through the upper and lower forging components, breaking the limitations of the traditional unidirectional pressure process. This provides key technical support for improving flange product quality and optimizing production efficiency. The bidirectional pressure process applies equal and opposite pressures simultaneously through the upper and lower forging components, ensuring the flange blank is symmetrically stressed in the vertical direction. This allows the metal blank to flow uniformly radially, effectively avoiding localized stress concentration or metal accumulation. Simultaneously, the symmetrically designed guiding mechanism (such as vertical guide shafts and the coordinated guidance of long and short sliding shafts) precisely controls the displacement trajectory of the flange blank during forging, ensuring that key dimensional deviations such as the flange's outer diameter, inner diameter, and thickness are kept within a minimal range. This significantly improves product dimensional consistency and reduces the workload of subsequent calibration processes.

[0013] Second, the lower forging assembly can be used as both an ejector and unloading component and a pressure forging component, thus achieving a dual-purpose function. This eliminates the need for an additional ejector and unloading component on the mold device, helping to simplify the structure and reduce the weight of the mold device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this utility model is shown; Figure 2 A schematic diagram of the overall bottom side structure of this utility model is shown; Figure 3 A schematic diagram showing the contact state between the top-pressing short column and the short sliding shaft in this utility model is shown. Figure 4 This invention includes a schematic diagram of the top pressing short column, the upper forging assembly, and the sliding assembly. Figure 5 This invention illustrates a half-section internal structure diagram of the bearing ring and the annular forging die in this invention. Figure 6 The diagram shows the disassembled state of the lower forging assembly and the sliding sleeve in this invention.

[0017] List of reference numerals in the attached diagram: 1. Frame; 101. Chassis; 102. Vertical guide shaft; 103. Bearing ring; 1031. Shaft collar; 104. Annular forging die; 105. L-shaped vertical support rod; 106. Bushing; 107. Horizontal track shaft; 1071. Baffle plate; 2. Hydraulic cylinder; 3. Top pressure short column; 301. Slide plate; 302. Connecting shaft; 4. Flange blank; 5. Upper forging assembly; 501. Long sliding shaft; 502. Forging plate; 503. Connecting rod; 6. L-shaped support; 601. Sliding assembly; 7. Electrical control box; 8. Lower forging assembly; 801. Short slide shaft; 802. Forging disc; 8011. Limiting disc; 9. Sliding sleeve; 901. U-shaped pull frame; 902. Pull rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this 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, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Please refer to Figures 1 to 6 Example 1: This embodiment proposes a bidirectional pressure die device for symmetrical flange forging, including a frame 1, an L-shaped support 6, and a lower forging assembly 8. The frame 1 is composed of a base 101 and four vertical guide shafts 102 symmetrically welded to the top of the base 101. A bearing ring 103 is welded to the top of the four vertical guide shafts 102, and a collar 1031 is welded to the center of the through hole inside the bearing ring 103. The lower forging assembly 8 is composed of a short sliding shaft 801 and a forging disc 802 welded to the top of the short sliding shaft 801. A limiting disc 8011 is built into the through hole of the bearing ring 103 and supported on the top of the bearing ring 103. The short sliding shaft 801 and the collar 1031 slide through and slide together. The bearing ring 103... A ring forging die 104 is welded to the top and is concentrically arranged therewith. An upper forging assembly 5 is slidably installed above the ring forging die 104. The upper forging assembly 5 is composed of a long sliding shaft 501 and a forging plate 502 welded to the bottom end of the long sliding shaft 501. The head end of the L-shaped bracket 6 is welded and fixed to the ring forging die 104. A sliding assembly 601 is slidably fitted on the horizontal axis section of the L-shaped bracket 6. A top pressing short column 3 is slidably installed on the four vertical guide shafts 102. The top pressing short column 3 and the long sliding shaft 501 are symmetrically rotatably connected to the sliding assembly 601 by two connecting rods 503. A hydraulic cylinder 2 is fixedly installed on one side of the horizontal axis section of the L-shaped bracket 6. The head end of the piston rod of the hydraulic cylinder 2 is fixedly connected to the sliding assembly 601.

[0020] Preferably, when the forging disc 802 descends and slides to a state flush with the top opening of the annular forging die 104, the top pressure short column 3 is driven to rise and abut against the short sliding shaft 801.

[0021] Preferably, the top of the forging disc 802 is flush with the bottom opening of the annular forging die 104.

[0022] Preferably, the tail end of the upper connecting rod 503 is rotatably connected to the top end of the long sliding shaft 501; four X-shaped sliding plates 301 are symmetrically welded to the bottom side of the top pressing short column 3, the sliding plates 301 are slidably engaged with the vertical guide shaft 102, and a connecting shaft 302 is welded between two symmetrically arranged sliding plates 301 at a distance, and the tail end of the lower connecting rod 503 is rotatably connected to the connecting shaft 302.

[0023] Implementation 2: This embodiment is based on Implementation 1, but with the following additions: The flange blank 4 is embedded in the annular forging die 104 and supported on the top of the forging disc 802; two L-shaped vertical support rods 105 are symmetrically welded to the top of the bearing ring 103, and a bushing 106 is welded between the top parts of the two L-shaped vertical support rods 105. The long sliding shaft 501 and the bushing 106 are slidably connected; a horizontal track shaft 107 is welded to the bottom part of one L-shaped vertical support rod 105, and a sliding sleeve 9 is slidably installed on the horizontal track shaft 107. A U-shaped pull frame 901 is fixed to the outer periphery of the sliding sleeve 9, and the U-shaped pull frame 901 is fitted into the horizontal track shaft 107; a limiting disc 8011 is fixed to the bottom of the short sliding shaft 801, and a pull rod 902 is rotatably connected between the limiting disc 8011 and the sliding sleeve 9; a baffle 1071 is fixed to the tail end of the horizontal track shaft 107, and a spring is compressed and fitted on the part of the horizontal track shaft 107 located between the baffle 1071 and the sliding sleeve 9.

[0024] Preferably, an electrical control box 7 is fixedly installed on the vertical shaft section of the L-shaped bracket 6. The electrical control box 7 is equipped with a control unit for controlling the extension and retraction of the hydraulic cylinder 2. The hydraulic cylinder 2 is connected to an external hydraulic power unit through a high-pressure oil pipe. A solenoid valve is connected to the high-pressure oil pipe. The control unit is electrically connected to the solenoid valve. By controlling the energization or de-energization of the solenoid valve coil, the control unit can change the valve core position of the solenoid valve to switch the oil circuit, thereby realizing the extension and retraction control of the hydraulic cylinder 2.

[0025] The working principle, specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in realizing this technical solution will be described and explained in detail below: In use, the high-temperature semi-molten flange blank 4 is first placed in the annular forging die 104 and supported on the top of the forging disc 802. Then, the piston rod of the hydraulic cylinder 2 is controlled to retract by the control unit. The sliding assembly 601, the two connecting rods 503, the upper forging assembly 5, and the top pressing column 3 are connected to form a double crank slider mechanism. Through this mechanism, when the piston rod retracts, it can drive the top pressing column 3 and the upper forging assembly 5 to slide synchronously toward the flange blank 4. During this sliding process, the lower forging assembly 8 first slides down and contacts the flange blank 4, and performs forging on the flange blank 4 between the forging disc 502 and the forging disc 802. As the lower forging assembly 8 continues to slide down, when the forging disc 802 slides to a state flush with the top opening of the annular forging die 104, the top pressing... The short column 3 is driven to rise and come into contact with the short sliding shaft 801. At this time, the top-pressing short column 3 begins to push and drive the lower forging assembly 8 to slide upward and forge the bottom surface of the flange blank 4 through the forging disc 802. Thus, under this working condition, the lower forging assembly 8 and the upper forging assembly 5 begin to apply symmetrical bidirectional pressure to the top and bottom surfaces of the flange blank 4 until the flange blank 4 is forged into a disc-shaped rough-machined flange by relying on the enclosure and shaping effect of the annular forging die 104. After the above operations are completed, the piston rod of the control cylinder 2 is extended. The extended piston rod can push and drive the upper forging assembly 5 and the top-pressing short column 3 to slide away from the flange blank 4 and reset. Finally, the formed disc-shaped rough-machined flange is taken out from the annular forging die 104 and unloaded, completing the preliminary forging process of the flange blank 4.

[0026] In flange forging, the bidirectional pressure process of symmetrical forging applies pressure to the flange blank 4 simultaneously through the upper forging assembly 5 and the lower forging assembly 8. This breaks the limitations of the traditional unidirectional pressure process and provides key technical support for improving flange product quality and optimizing production efficiency. The bidirectional pressure process applies equal and opposite pressures simultaneously through the upper forging assembly 5 and the lower forging assembly 8, ensuring that the flange blank 4 is symmetrically stressed in the vertical direction. The metal blank can flow uniformly in the radial direction, effectively avoiding local stress concentration or metal accumulation. At the same time, with the symmetrically designed guiding mechanism (such as the vertical guide shaft 102 and the coordinated guidance of the long sliding shaft 501 and the short sliding shaft 801), the displacement trajectory of the flange blank 4 during forging can be precisely controlled, ensuring that the deviations of key dimensions such as the outer diameter, inner diameter, and thickness of the flange are controlled within a very small range. This significantly improves product dimensional consistency and reduces the workload of subsequent correction processes.

[0027] The sliding sleeve 9, the pull rod 902, and the lower forging assembly 8 are connected together to form a single crank slider mechanism. Through this mechanism, the U-shaped pull frame 901 pulls and drives the sliding sleeve 9 away from the bearing ring 103 to slide, which can drive the lower forging assembly 8 to slide upward to conveniently eject the formed disc-shaped rough-machined flange from the ring forging die 104. In this way, the lower forging assembly 8 can be used as an ejection and unloading component and as a pressure forging component, which has the effect of dual use. This can save the need to configure an additional ejection and unloading component on the mold device, which helps to simplify the structure and reduce the weight of the mold device.

[0028] During the forging process, when the forging assembly 8 is driven to rise, it drives the sliding sleeve 9 to compress the spring on the horizontal track shaft 107 and slide towards the bearing ring 103. During this process, when the top pressing short column 3 is disengaged from the lower forging assembly 8 as it descends, the spring can automatically push back to drive the lower forging assembly 8 to slide down and reset, so that the lower forging assembly 8 can be driven to slide up and perform unloading operations through the single crank slider mechanism.

[0029] It is worth noting that the composition of the electronic control unit and its connection and wiring method with the solenoid valve are existing technologies for technicians engaged in equipment electrification modification, design and upgrading, so they will not be described in detail here.

[0030] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0031] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0032] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bidirectional pressure die device for symmetrical flange forging, comprising a frame (1), an L-shaped support (6) and a lower forging assembly (8), wherein the frame (1) is composed of a chassis (101) and four vertical guide shafts (102) welded together; Its features are, The top of the four vertical guide shafts (102) is welded with a bearing ring (103), and a collar (1031) is welded to the center of the through hole inside the bearing ring (103); the lower forging assembly (8) is composed of a short sliding shaft (801) and a forging disc (802) welded together, and a limiting disc (8011) is built into the through hole of the bearing ring (103) and supported on the top of the bearing ring (103), with the short sliding shaft (801) and the collar (1031) slidingly connected; the top of the bearing ring (103) is welded with an annular forging die (104) arranged concentrically with it, and an upper forging assembly (5) is slidably installed above the annular forging die (104). The upper forging assembly (5) is composed of a long sliding shaft (501) and a forging plate (502) welded together; the first end of the L-shaped bracket (6) is welded and fixed to the annular forging die (104); a sliding assembly (601) is slidably fitted on the horizontal axis section of the L-shaped bracket (6); a top pressing short column (3) is slidably installed on the four vertical guide shafts (102); two connecting rods (503) are symmetrically rotated between the top pressing short column (3) and the long sliding shaft (501) and the sliding assembly (601); a hydraulic cylinder (2) is fixedly installed on one side of the horizontal axis section of the L-shaped bracket (6); the first end of the piston rod of the hydraulic cylinder (2) is fixedly connected to the sliding assembly (601).

2. The bidirectional pressure die device for symmetrical flange forging according to claim 1, characterized in that, When the forging disc (802) descends and slides to a state flush with the top opening of the annular forging die (104), the top pressure short column (3) is driven to rise and abut against the short sliding shaft (801).

3. The bidirectional pressure die device for symmetrical flange forging according to claim 1, characterized in that, The top of the forging disc (802) is flush with the bottom opening of the annular forging die (104).

4. The bidirectional pressure-applying die device for symmetrical flange forging according to claim 1, characterized in that, The tail end of the upper connecting rod (503) is rotatably connected to the top end of the long sliding shaft (501); The bottom side of the top pressure short column (3) is symmetrically welded with four X-shaped sliding plates (301). The sliding plates (301) are slidably engaged with the vertical guide shaft (102). A connecting shaft (302) is welded between two symmetrically arranged sliding plates (301) at a distance. The tail end of the connecting rod (503) on the lower side is rotatably connected to the connecting shaft (302).

5. The bidirectional pressure die device for symmetrical flange forging according to claim 1, characterized in that, The flange blank (4) is placed in the annular forging die (104) and supported on the top of the forging disc (802).

6. The bidirectional pressure die device for symmetrical flange forging according to claim 1, characterized in that, The top of the bearing ring (103) is symmetrically welded with two L-shaped vertical support rods (105), and a bushing (106) is welded between the top parts of the two L-shaped vertical support rods (105). The long sliding shaft (501) and the bushing (106) slide through each other.

7. The bidirectional pressure die device for symmetrical flange forging according to claim 6, characterized in that, A horizontal track shaft (107) is welded to the bottom part of the L-shaped vertical support rod (105). A sliding sleeve (9) is slidably installed on the horizontal track shaft (107). A U-shaped pull frame (901) is fixed to the outer periphery of the sliding sleeve (9). The U-shaped pull frame (901) is fitted into the horizontal track shaft (107). A limiting plate (8011) is fixedly connected to the bottom end of the short slide shaft (801). A pull rod (902) is rotatably connected between the limiting plate (8011) and the slide sleeve (9). A baffle (1071) is fixedly connected to the tail end of the horizontal track shaft (107). A spring is installed on the part of the horizontal track shaft (107) located between the baffle (1071) and the slide sleeve (9).

Images