A powder metallurgy workpiece gripping device

Abstract

The utility model discloses a powder metallurgy workpiece grabbing device, including support frame, the inside of support frame is provided with moving assembly, the inside of support frame is provided with frame through moving assembly, the inside of frame is provided with drive assembly, the bottom of frame is provided with screw rod through drive assembly, the surface screw thread connection of screw rod has moving plate, the inside of moving plate is provided with the installation hole of penetration, the inside of installation hole has the movable link of lap, the surface screw thread connection of movable link has the nut, the surface of movable link is provided with elastic component, the opposite face fixed mounting of movable link has rubber pad, can carry out self -adaptation clamping to powder metallurgy workpiece, and spring cooperation rubber pad's elastic deformation can be, when meeting the curved surface of cylinder, ball head, bevel tooth top etc. can produce local adhesion, the original line contact is expanded as surface contact in an instant, can more stably carry out the clamping of powder metallurgy workpiece and fix.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy workpiece processing technology, and in particular to a powder metallurgy workpiece gripping device. Background Technology

[0002] Powder metallurgy is a continuous batch production process. In the pressing and molding process, because the product only has a certain green blank thickness, it is prone to cracking after demolding and before sintering, resulting in defective products and product failure. The use of robotic arms for material handling and unloading has become the mainstream trend.

[0003] Chinese Patent Application Publication No. CN212245259U discloses an automatic gripping and transferring device for powder metallurgy workpieces, including a frame, a first connecting block and a second connecting block on the frame, a sliding main shaft between the first connecting block and the second connecting block, an active sliding device on the outer side of the sliding main shaft, a telescopic cylinder on one side of the active sliding device, electric telescopic rods on both sides of the telescopic cylinder, a gripping connecting clip on the lower surface of the telescopic cylinder, a gripping block rotatably connected to the gripping connecting clip, an auxiliary device on the frame, and a workpiece placement tray on one side of the auxiliary device.

[0004] Although the above-mentioned device can grip powder metallurgy workpieces, it clamps the workpieces using rigid plate-shaped gripping blocks. During the processing of powder metallurgy workpieces, the shapes of the workpieces vary, and some workpieces are not necessarily plate-shaped. When the workpiece is a cylindrical pin, helical gear, ball-head cam, or irregularly shaped connecting rod with an arc surface, the rigid plate can only be tangent to the generatrix or local curved surface of the workpiece, forming an extremely narrow line contact or even a three-point point contact, which can easily lead to unstable clamping. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a powder metallurgy workpiece gripping device to solve the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A powder metallurgy workpiece gripping device includes a support frame, a movable component inside the support frame, a frame inside the support frame via the movable component, a drive component inside the frame, a screw at the bottom of the frame via the drive component, a movable plate threadedly connected to the surface of the screw, a mounting hole through the movable plate, a movable rod overlapping inside the mounting hole, a nut threadedly connected to the surface of the movable rod, an elastic component on the surface of the movable rod, and rubber pads fixedly mounted on the opposing surfaces of the movable rod.

[0007] Preferably, the moving component includes a linear motor disposed inside the support frame, a moving seat disposed on the linear motor, a hydraulic push rod fixedly mounted on the bottom of the moving seat, and the output end of the hydraulic push rod being fixedly connected to the frame.

[0008] Preferably, the drive assembly includes a dual-axis motor disposed inside the frame, a first pulley is fixedly mounted on the output end of the dual-axis motor, a synchronous belt is engaged on the surface of the first pulley, a second pulley is engaged on the inner wall of the synchronous belt, and the second pulley is fixedly connected to the screw.

[0009] Preferably, the elastic component includes a mounting ring disposed on the surface of the movable rod, and a spring is overlapped on the surface of the mounting ring, the spring being overlapped with the movable plate.

[0010] Preferably, a mounting bracket is rotatably connected to the surface of the screw, the mounting bracket is fixedly connected to the frame, and the movable plate is slidably connected to the mounting bracket.

[0011] Preferably, there are multiple movable rods, and the multiple movable rods are distributed in an array.

[0012] Preferably, a support base is fixedly installed at the bottom of the support frame, and the number of support bases is multiple.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When the powder metallurgy workpiece gripping device grips, the screw rotates through the drive component, causing the moving plates to move closer together along the mounting frame. This causes the movable rod, nut, mounting ring, spring, and rubber pad to move together towards the center, allowing the rubber pad to contact and clamp the powder metallurgy workpiece. During the clamping process, the elasticity of the spring allows the movable rod and rubber pad to adaptively clamp the powder metallurgy workpiece, making it easy for the device to grip powder metallurgy workpieces of different shapes. Furthermore, the elastic deformation of the spring and the rubber pad itself allows for localized contact when encountering curved surfaces such as cylinders, spherical heads, and inclined tooth tops, instantly expanding the original line contact to surface contact, thus providing a more stable clamping and fixing of the powder metallurgy workpiece. Attached Figure Description

[0014] Figure 1 This is a three-dimensional perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is an exploded view of another partial structure of the present invention.

[0015] In the diagram: 1. Support frame; 2. Support base; 3. Linear motor; 4. Movable seat; 5. Hydraulic push rod; 6. Frame; 7. Dual-axis motor; 8. First pulley; 9. Synchronous belt; 10. Second pulley; 11. Screw; 12. Mounting bracket; 13. Movable plate; 14. Movable rod; 15. Nut; 16. Mounting ring; 17. Spring; 18. Rubber pad; 19. Mounting hole. Detailed Implementation

[0016] 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.

[0017] Example: Refer to Figure 1-4A powder metallurgy workpiece gripping device includes a support frame 1, with multiple support bases 2 fixedly installed at the bottom of the support frame 1 to facilitate more stable placement of the support frame 1. A moving component is installed inside the support frame 1, and a frame 6 is mounted inside the support frame 1 via the moving component. A drive component is installed inside the frame 6, and a screw 11 is mounted at the bottom of the frame 6 via the drive component. The drive component includes a dual-axis motor 7 installed inside the frame 6. A first pulley 8 is fixedly installed at the output end of the dual-axis motor 7. A synchronous belt 9 is meshed on the surface of the first pulley 8, and a second pulley 10 is meshed on the inner wall of the synchronous belt 9. Two pulleys 10 are fixedly connected to the screw 11. The drive assembly facilitates the provision of driving force for the rotation of the screw 11. A movable plate 13 is threadedly connected to the surface of the screw 11, and a mounting bracket 12 is rotatably connected to the surface of the screw 11. The mounting bracket 12 is fixedly connected to the frame 6, and the movable plate 13 is slidably connected to the mounting bracket 12. A mounting hole 19 is provided through the interior of the movable plate 13, and a movable rod 14 is connected inside the mounting hole 19. There are multiple movable rods 14, which are arranged in an array. Nuts 15 are threadedly connected to the surface of the movable rod 14, and an elastic component is provided on the surface of the movable rod 14. The elastic component includes components disposed on the movable rod. The mounting ring 16 on the surface of the 14 has a spring 17 attached to it. The spring 17 overlaps with the moving plate 13. During clamping, when the rubber pad 18 contacts the powder metallurgy workpiece, the movable rod 14 stops moving, causing the mounting ring 16 to stop moving, while the moving plate 13 can continue to move, compressing the spring 17. This allows for adaptive clamping and fixing of the powder metallurgy workpiece. The rubber pad 18 is fixedly mounted on the facing surfaces of the movable rods 14. In this powder metallurgy workpiece gripping device, during gripping, the drive assembly rotates the screw 11, causing the moving plates 13 to move closer together along the mounting frame 12. This causes the movable rod 14, nut 15, mounting ring 16, spring 17, and rubber pad 18 to move together towards the center, making the rubber pad 18 contact and clamp the powder metallurgy workpiece. During the clamping process, the elasticity of the spring 17 allows the movable rod 14 and rubber pad 18 to adaptively clamp the powder metallurgy workpiece, making it easy for the device to grasp powder metallurgy workpieces of different shapes. Furthermore, the elastic deformation of the spring 17 and the rubber pad 18 itself can produce local contact when encountering curved surfaces such as cylinders, spherical heads, and helical tooth tops, instantly expanding the original line contact to surface contact, which can more stably clamp and fix the powder metallurgy workpiece.

[0018] according to Figure 1As shown, the moving component includes a linear motor 3 installed inside the support frame 1. A moving seat 4 is installed on the linear motor 3. A hydraulic push rod 5 is fixedly installed at the bottom of the moving seat 4. The output end of the hydraulic push rod 5 is fixedly connected to the frame 6. The moving component facilitates the provision of driving force for the up-down and left-right movement of the frame 6, thereby facilitating subsequent adjustment of the height and left-right position of the frame 6. This, in turn, facilitates adjustment of the height and left-right position of the gripping structure, thus enabling better gripping of powder metallurgy workpieces.

[0019] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be any conventional known device, such as a computer, that can control the operation of the electrical components mentioned in the article.

[0020] In use: During gripping, the dual-axis motor 7 rotates the first pulley 8, which in turn drives the synchronous belt 9 to rotate the second pulley 10, causing the screw 11 to rotate. This causes the moving plates 13 to move closer together along the mounting frame 12, bringing the movable rod 14, nut 15, mounting ring 16, spring 17, and rubber pad 18 together towards the center. This allows the rubber pad 18 to contact and clamp the powder metallurgy workpiece. During clamping, the elasticity of the spring 17 allows the movable rod 14 and rubber pad 18 to adaptively clamp the powder metallurgy workpiece. The hydraulic push rod 5 allows the frame 6 to move forward... The vertical movement of the moving base 4 allows for adjustment of the height of the powder metallurgy workpiece held below. The linear motor 3 causes the moving base 4 to move left and right, allowing for adjustment of the left and right position of the powder metallurgy workpiece held below. When the spring 17 needs to be replaced, the nut 15 can be removed from the movable rod 14, then the movable rod 14 can be pulled out from the mounting hole 19, then the spring 17 can be removed from the surface of the movable rod 14, then the new spring 17 can be installed on the surface of the movable rod 14, then the movable rod 14 can be inserted into the mounting hole 19, and finally the nut 15 can be installed on the movable rod 14.

[0021] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder metallurgy workpiece gripping device comprising a support frame (1), characterized in that, The support frame (1) is provided with a moving component inside. The support frame (1) is provided with a frame (6) through the moving component inside. The frame (6) is provided with a driving component inside. The bottom of the frame (6) is provided with a screw (11) through the driving component. The surface of the screw (11) is threadedly connected to a moving plate (13). The moving plate (13) is provided with a through mounting hole (19). The mounting hole (19) is connected to a movable rod (14). The surface of the movable rod (14) is threadedly connected to a nut (15). The surface of the movable rod (14) is provided with an elastic component. The opposing surfaces of the movable rod (14) are fixedly installed with rubber pads (18).

2. A powder metallurgy workpiece gripping device according to claim 1, wherein The moving component includes a linear motor (3) disposed inside the support frame (1), a moving seat (4) disposed on the linear motor (3), a hydraulic push rod (5) fixedly installed at the bottom of the moving seat (4), and the output end of the hydraulic push rod (5) being fixedly connected to the frame (6).

3. A powder metallurgy workpiece gripping device according to claim 1, wherein The drive assembly includes a dual-axis motor (7) disposed inside the frame (6). A first pulley (8) is fixedly installed at the output end of the dual-axis motor (7). A synchronous belt (9) is meshed on the surface of the first pulley (8). A second pulley (10) is meshed on the inner wall of the synchronous belt (9). The second pulley (10) is fixedly connected to the screw (11).

4. A powder metallurgy workpiece gripping device according to claim 1, wherein The elastic component includes a mounting ring (16) disposed on the surface of the movable rod (14), and a spring (17) is attached to the surface of the mounting ring (16), and the spring (17) is attached to the movable plate (13).

5. The powder metallurgy workpiece gripping device according to claim 1, characterized in that, The screw (11) is rotatably connected to a mounting bracket (12), the mounting bracket (12) is fixedly connected to the frame (6), and the movable plate (13) is slidably connected to the mounting bracket (12).

6. The powder metallurgy workpiece gripping device according to claim 1, characterized in that, The number of movable rods (14) is multiple, and the multiple movable rods (14) are distributed in an array.

7. A powder metallurgy workpiece gripping device according to claim 1, wherein The support frame (1) has a support base (2) fixedly installed at its bottom, and there are multiple support bases (2).

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