A titanium powder roll forming apparatus

Abstract

This invention provides a titanium powder roll forming device, comprising a parallel gantry frame, a worm gear passing through the gantry frame, and an adjusting motor. The lower part of the worm gear is rotatably connected to a convex upper roll via a connecting block, and a concave lower roll forms a forming channel. Both the upper and lower rolls are independently connected to a geared motor for bidirectional drive, and work with a screw feeder and an inclined discharge plate to achieve efficient material transfer. By adjusting the gap between the upper and lower rolls and the guide structure of the worm gear, precise adjustment of the titanium powder billet thickness and stability of the rolling process can be achieved. The adaptive design of the convex roll slope angle and the concave roll groove, combined with the high-pressure rolling process, significantly improves the density and surface flatness of the titanium sheet. This device solves the problems of large thickness deviation and insufficient density in traditional rolling technology.

Description

Technical Field

[0001] This utility model relates to the field of powder rolling machinery technology, specifically to a powder roll forming device. Background Technology

[0002] Pass rolling is a method for forming powder metallurgy, and the core components of the equipment used include pass rolls, a hopper, and a feeder. Titanium sheets, due to their high strength, lightweight, and corrosion resistance, have wide applications in aerospace, medical devices, and high-end manufacturing. However, traditional titanium sheet rolling technology faces significant challenges in producing high-strength, high-density sheets. Inconsistent surface quality and insufficient thickness control precision affect the mechanical properties of the final product. Conventional rolls and feeding systems are insufficient to meet the stability requirements of high-density titanium sheet production. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a titanium powder roll forming device.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: A titanium powder die rolling device includes two parallel gantry frames. A worm gear is threaded through the top of the gantry frames. A connecting block is rotatably mounted on the lower part of the worm gear. The top of the worm gear is connected to the output end of an adjusting motor via a turbine. The turbine is fitted onto the output end of the adjusting motor. An upper roll is laterally rotatably mounted on the connecting block. A lower roll adapted to the upper roll is also mounted between the two gantry frames. A feeding mechanism is located on the same side between the upper and lower rolls in the middle of the two gantry frames. A discharging mechanism is located on the other side between the upper and lower rolls. The upper roll is a convex roll, and the lower roll is a concave roll. A forming channel is left between the convex and concave rolls. Both the upper and lower rolls are independently connected to a driving device.

[0005] Among the aforementioned technical features, the upper and lower rolls are independently driven by two geared motors, enabling bidirectional rotation and speed difference adjustment. This design optimizes the rolling pressure distribution, avoids the torque unevenness problem caused by a single motor drive, and improves the flexibility and controllability of the rolling process, making the titanium powder more uniformly stressed in the forming channel and reducing thickness deviation.

[0006] A further technical solution includes that the driving device includes a geared motor, and the output ends of the two geared motors are respectively connected to the upper roll and the lower roll.

[0007] Further technical solutions also include that the feeding mechanism includes a hopper, the hopper includes an inlet and an outlet, the outlet and the inlet are connected by two arc surfaces, and the outlet is connected to the forming channel.

[0008] A further technical solution includes a screw feeder inside the hopper, comprising an auger that passes through the hopper and connects to the output end of a feeding motor. The auger of the screw feeder rotates within the hopper, initially compacting the titanium powder and evenly pushing it to the arc-shaped discharge port, avoiding localized accumulation or uneven density. The arc-shaped transition design allows the powder to smoothly enter the forming channel, reducing feeding impact and ensuring a continuous and stable rolling process, thereby improving the quality of the finished product.

[0009] A further technical solution includes a discharge mechanism comprising a discharge plate, the upstream end of which is clearance-fitted with the top of the lower roll, and the downstream end of which is inclined downwards. This structure utilizes gravity to assist in the rapid detachment of the rolled titanium sheet from the roll and its directional transport. The clearance fit between its upstream end and the top of the lower roll prevents the sheet from jamming or undergoing secondary deformation, ensuring smooth discharge while reducing manual intervention and improving production efficiency.

[0010] Further technical solutions include that the convex ring side of the convex roller is provided with a slope angle, the concave roller is provided with a groove, and a gap is left between the slope angle and the groove.

[0011] Further technical solutions include a slope angle of 3.5°, a gap of 0.1 mm, and a groove width of 72 mm.

[0012] A further technical solution includes a sliding groove provided on the inner side of the gantry frame, with the connecting block slidably disposed within the sliding groove. An adjusting motor drives the worm gear to rotate, which in turn drives the connecting block to slide up and down along the sliding groove via threaded transmission, achieving precise adjustment of the roll gap. The sliding groove guide structure ensures the stability of the rolls during adjustment, preventing deviation or vibration.

[0013] The advantages and beneficial effects of this invention are as follows: By setting the upper and lower rollers as convex and concave rollers respectively, high-pressure and high-density rolling of titanium sheets is achieved through the forming channel between the two rollers, resulting in a more compact and dense titanium sheet formed from powder. The worm gear and connecting block can adjust the gap between the upper and lower rollers to obtain powder blanks of different thicknesses. At the same time, the worm gear also provides good stability between the upper and lower rollers, thereby improving the flatness of the powder blank surface. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the combined structure of the upper and lower rollers of this utility model;

[0017] Attached reference numerals: 1-Gantry frame, 2-Wheel screw, 3-Adjusting motor, 4-Connecting block, 5-Upper roller, 6-Lower roller, 7-Forming channel, 8-Gear motor, 9-Hopper, 10-Inlet, 11-Outlet, 12-Screw feeder, 13-Auger, 14-Feeding motor, 15-Outlet plate, 16-Slope, 17-Groove, 18-Groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial technical effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0019] The embodiments of this utility model are described below based on its overall structure. A high-strength, high-density titanium sheet roll forming system.

[0020] For ease of description, the directional terms "upper", "lower", "left", "right", "front", "back", "inner", and "outer" used in this specification are based on the placement posture of the high-strength, high-density titanium sheet roll forming system under normal use.

[0021] Example 1

[0022] Please see Figures 1-3 This embodiment provides a titanium powder die rolling device, including two parallel gantry frames 1. A worm gear 2 is threadedly connected through the top of the gantry frame 1. A bearing is sleeved on the lower part of the worm gear 2, and a turbine is meshed on the upper part. The turbine is sleeved on the output end of the regulating motor 3. The outer ring of the bearing is connected to the connecting block 4, so that the worm gear 2 can rotate relative to the connecting block 4. An upper roll 5 is rotatably mounted on the connecting block 4. A lower roll 6 adapted to the upper roll 5 is also mounted between the two gantry frames 1.

[0023] A forming channel 7 is located in the middle of the two gantry frames, between the upper roller 5 and the lower roller 6. A hopper 9 is located on the same side of the forming channel 7, and a discharge plate 15 is located on the other side of the forming channel 7. The upper roller 5 is a convex roller, and the lower roller 6 is a concave roller resembling the upper roller 5. The upper roller 5 and the lower roller 6 are respectively connected to a geared motor 8 through the connecting block 4 and the gantry frame 1. A screw feeder 12 is installed inside the hopper 9, which includes an auger 13. The auger 13 passes through the hopper 9 and is connected to the output end of the feeding motor 14.

[0024] The upper and lower rolls are independently driven by two geared motors 8, enabling bidirectional rotation. Independent drive also allows adjustment of the speed difference between the upper and lower rolls, optimizing the rolling pressure distribution. The adjusting motor 3 drives the top worm gear 2 to rotate, which in turn drives the connecting block 4 via a threaded transmission, causing the upper roll to slide up and down along the groove 18 inside the gantry, precisely adjusting the gap between the upper and lower rolls. After being formed by the forming channel 7, the rolled titanium sheet is discharged through the discharge plate 15, which has a clearance fit with the top of the lower roll 6. The downstream end of the discharge plate 15 is inclined downwards, using gravity to assist the sheet in detaching from the rolls and being conveyed directionally.

[0025] The hopper 9 includes a feed inlet 10 and a discharge outlet 11. The discharge outlet 11 and the feed inlet 10 are connected by a smooth transition through an arc surface. The discharge outlet 11 is connected to the forming channel 7.

[0026] The convex roller has a 3.5° bevel angle 16 on its convex ring side, and the concave roller has a 72mm wide groove. A 0.1mm gap is left between the bevel angle and the groove 17. The upstream end of the discharge plate 15 is clearance-fitted with the top of the lower roller 6, and the downstream end of the discharge plate 15 is inclined downward.

[0027] Example 2

[0028] A titanium powder die rolling device differs from Embodiment 1 only in that a groove 18 is provided on the inner side of the gantry 1, and the connecting block 4 is slidably disposed within the groove 18.

[0029] The working principle of this invention is as follows: titanium powder enters through the feed inlet 10 of the hopper 9. The screw feeder 12 inside the hopper 9 is driven to rotate by the feeding motor 14, uniformly pushing the powder to the discharge outlet 11. The discharge outlet 11 is connected to the forming channel 7 between the upper and lower rollers through an arc transition, allowing the titanium powder to smoothly enter the rolling area. The auger 13 of the screw feeder 12 initially compacts the powder before it enters the forming channel 7, avoiding local accumulation or uneven density. The slope angle 16 of the upper roller 5 provides a certain buffer, avoiding the risk of breakage caused by low edge strength during flat roller rolling. At the same time, the slope angle 16 guides the powder to flow to both sides, promoting uniform powder distribution. The groove 17 of the lower roller 6 cooperates with the slope angle of the convex roller to form a closed forming channel. The groove 17 structure enhances the lateral constraint on the powder, preventing the material from overflowing laterally during rolling and reducing powder waste at the edges. By maintaining a very small gap between the convex and concave rolls and using high-pressure rolling, the titanium powder is tightly bonded under extrusion, which significantly improves the density and surface smoothness of the titanium sheet.

[0030] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A titanium powder roll forming apparatus, comprising two parallel gantry frames (1), a worm gear (2) threaded through the top of the gantry frames (1), a connecting block (4) rotatably connected to the lower part of the worm gear (2), and an adjusting motor (3) fitted with a turbine that engages with the worm gear (2); characterized in that, The connecting block (4) is laterally rotatably equipped with an upper roller (5), and a lower roller (6) adapted to the upper roller (5) is erected between the two gantry frames (1); the upper roller (5) is a convex roller, the lower roller (6) is a concave roller, and a forming channel (7) is formed between the convex roller and the concave roller; the upper roller (5) and the lower roller (6) are independently connected to the driving device; the middle of the two gantry frames (1) is provided with a feeding mechanism on one side of the forming channel (7), and a discharging mechanism on the other side.

2. The titanium powder roll forming apparatus according to claim 1, characterized in that: The drive device includes two geared motors (8), the output ends of which are connected to the upper roll (5) and the lower roll (6) respectively.

3. The titanium powder roll forming apparatus according to claim 1, characterized in that: The feeding mechanism includes a hopper (9) with an inlet (10) and an outlet (11), and the inlet (10) and outlet (11) are connected to the forming channel (7) by an arc transition.

4. The titanium powder roll forming apparatus according to claim 3, characterized in that: The hopper (9) is equipped with a screw feeder (12), which includes an auger (13). The auger (13) passes through the hopper (9) axially and is connected to the output end of the feeding motor (14).

5. The titanium powder roll forming apparatus according to claim 1, characterized in that: The discharge mechanism includes a discharge plate (15), the upstream end of which is fitted with the top of the lower roller (6) with a clearance, and the downstream end is inclined downward.

6. The titanium powder roll forming apparatus according to claim 1, characterized in that: The convex roller has a bevel angle (16) on its convex ring side, and the concave roller has a groove (17). A gap is left between the bevel angle and the groove.

7. The titanium powder roll forming apparatus according to claim 6, characterized in that: The slope angle (16) is 3.5°, the width of the groove (17) is 72mm, and the gap width is 1mm.

8. The titanium powder roll forming apparatus according to claim 1, characterized in that: The gantry frame (1) is provided with a sliding groove (18) on its inner side, and the connecting block (4) is slidably disposed in the sliding groove (18).

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