Rear material jacking device for local upsetting of long pipe material forge piece

Abstract

The utility model belongs to the technical field of forging, and particularly relates to a rear material jacking device used for local upsetting of a long pipe material forge piece. Comprising an upper plate (1) and a baffle (2), the thickness and the material strength of the baffle (2) can bear the maximum recoil force generated by equipment work, the upper plate (1) and the baffle (2) are connected together in a welding mode, and the upper plate (1) is connected with a fixing seat (3).

Description

Technical Field

[0001] This utility model belongs to the field of forging technology, specifically relating to a rear ejector device for local upsetting of long tube forgings. Background Technology

[0002] A flat forging machine, also known as a horizontal forging machine, is a branch of mechanical presses primarily used for producing die forgings via localized upsetting. It is a forging press with a horizontal upsetting end. The key to forming this type of forging lies in how to ensure that a single tooling setup can produce multiple specifications of pipe while simultaneously withstanding the recoil of the equipment, maintaining stability and safety. This reduces worker workload, improves work efficiency, and guarantees safety. Utility Model Content

[0003] Purpose of the utility model: To address the issues of high recoil force and varied forging specifications in flat forging machines for pipe forgings, and the need for a stable yet adjustable rear ejector device, this utility model provides a rear ejector device for local upsetting of long pipe forgings, reducing tooling changes, reducing labor intensity, and improving production efficiency.

[0004] Technical solution:

[0005] A rear ejector device for local upsetting of long tube forgings includes: an upper plate 1 and a baffle 2. The thickness and material strength of the baffle 2 are sufficient to withstand the maximum recoil force generated by the operation of the equipment. The upper plate 1 and the baffle 2 are connected together by welding, and the upper plate 1 is connected to a fixed base 3.

[0006] Preferably, the upper plate 1 is designed with several oblong holes for connection with the fixing seat 3.

[0007] Preferably, the size and position of the oblong hole on the upper plate 1 are determined according to the size of the part and the fixing seat 3.

[0008] Preferably, the baffle 2 is designed with several blind holes corresponding to the male mold 4 to accommodate one end of the long tube forging, so that the long tube forging is coaxial with the male mold 4.

[0009] Preferably, the height of the baffle 2 is higher than the height of the male mold 4.

[0010] Preferably, there are at least four waist-shaped holes, and their direction is consistent with the length direction of the long tube forging.

[0011] Beneficial effects:

[0012] This utility model has a simple structure and is easy to use. Compared with the original traditional device, the rear ejector device provided by this utility model can be effectively used for rear positioning during upsetting of tubes of various lengths. It is simple to operate, accurate in positioning, stable and safe, and realizes the stabilization and precision of upsetting of multiple types of tubes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a rear ejector device for local upsetting of long tube forgings according to an embodiment of the present invention;

[0014] Figure 2 For fixing the rear ejector device;

[0015] Figure 3 This is a schematic diagram showing the connection between the mounting bracket and the equipment.

[0016] Figure 4 This is a schematic diagram of a forging.

[0017] The components include: upper plate 1, baffle 2, fixed base 3, male mold 4, and female mold worktable 5. Detailed Implementation

[0018] like Figure 1 and 2 As shown, a rear ejector device for local upsetting of long tube forgings includes: an upper plate 1, a baffle 2, the thickness and material strength of the baffle 2 being able to withstand the maximum recoil force generated by the operation of the equipment, wherein the upper plate 1 and the baffle 2 are connected together by welding, and the upper plate 1 is connected to the fixed base 3.

[0019] Preferably, the upper plate 1 is designed with several oblong holes for connection with the fixing seat 3.

[0020] The upper plate is designed according to operational requirements, with oblong holes machined on it. Fastening bolts are used to fix the rear ejector device to the fixed base 3, preventing displacement or shaking during operation. The oblong hole design allows the rear ejector device to be fixed with bolts regardless of its position. The size and position of the oblong hole are consistent with the size and position of the threaded hole on the fixed base 3.

[0021] Preferably, the size and position of the oblong hole on the upper plate 1 are determined according to the size of the part and the fixing seat 3.

[0022] Preferably, the baffle 2 is designed with several blind holes corresponding to the male mold 4 to accommodate one end of the long tube forging, so that the long tube forging is coaxial with the male mold 4.

[0023] The baffle is vertically connected to the upper plate by welding, and its height is slightly higher than the position of the male mold 4. Several blind holes corresponding to the position of the male mold 4 are machined on it to keep the part and the male mold 4 on the same horizontal line during operation. The width should be sufficient to ensure that there is no shaking or damage due to recoil during the upsetting process.

[0024] Preferably, the height of the baffle 2 is higher than the height of the male mold 4.

[0025] Preferably, there are at least four waist-shaped holes, and their direction is consistent with the length direction of the long tube forging.

[0026] The rear ejector device of this utility model for local upsetting of long tube forgings relies on a fixed base device connected to the equipment. The rear ejector device can be moved forward or backward to meet the needs of tubes of various lengths.

[0027] Figure 3 This is a schematic diagram of the connection between the fixed base and the equipment, where the female mold workbench 4 is used to place the female mold.

[0028] The present invention will be further described in detail below through specific embodiments.

[0029] This utility model provides an upsetting forging device for A-100 pipe. For forging materials with extremely high strength and good high-temperature plasticity, which are difficult to form during production, the forging process is refined and tooling dies are used to complete the forming. The method includes the following steps:

[0030] Example:

[0031] Step 1: The forging (see attached) Figure 4 Although the shape is simple, the wall thickness is relatively large. The wall thickness of the tube used reaches (76-38)÷2=19mm, which means that the recoil force during the upsetting process is also very large. Based on the dimensions of the deformed parts at both ends of the forging and the dimensions of the undeformed part in the middle, the blanking length is determined to be 502mm.

[0032] Step 2: According to the mold design, Step 1 involves upsetting one end of the φ84×55 tube. Since the forging ratio is 1.6 < 3, it can be directly upset. Fix the rear material holder on the fixed base 3. Its position is determined by the length of the tube required for forming one end of the φ84×55 tube. During operation, the tail end of the tube is placed in the blind hole, and the front forging is placed in the female mold, and upsetting can then be performed.

[0033] Step 3: According to steps II and III of the mold design, perform upsetting forging of one end of the φ96×46 tube. Therefore, the end forging ratio is 2.3, close to 3. To reduce surface defects during the upsetting process, step II (gathering step) must be performed first, followed by step III (forming step). After step I is completed, the tube length changes, and the position of the ejector device is adjusted to fix it. Similarly, its position is determined by the tube length required for forming one end of the φ96×46 tube. During operation, the tail end of the tube is placed in the blind hole, and the forging head is placed in the female die, then upsetting can be performed.

[0034] Step 4: Step III, the forming step. No adjustment to the position of the ejector device is required; simply move the tube to align it to complete the upsetting process.

[0035] Each of the three steps—the second, third, and fourth—requires one firing.

[0036] Step 5: Conduct a comprehensive inspection of the dimensions and surface quality of the forgings; all dimensions, surface quality, coaxiality, and straightness meet the requirements.

Claims

1. A rear-upset device for the local upsetting of long tubular forgings, characterized in that The utility model relates to a long pipe material forging device, including: The upper plate (1) is connected with the baffle (2) through the welding mode, the upper plate (1) is connected with the fixed seat (3), the upper plate (1) is designed with a plurality of waist-shaped holes for being connected with the fixed seat (3), the size and position of the waist-shaped hole on the upper plate (1) are determined according to the size of the part and the fixed seat (3), the baffle (2) is designed with a plurality of blind holes corresponding with the male die (4) for accommodating one end of long pipe material forging, so that the long pipe material forging is coaxial with the male die (4), the height of the baffle (2) is higher than the height of the male die (4), the waist-shaped hole is at least four, and the direction is consistent with the length direction of long pipe material forging.

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