Protective clamping and feeding device for powder metallurgy parts

Abstract

The utility model discloses a powder metallurgy part protection type clamping feeding device which comprises a mechanical arm, one side of the mechanical arm is fixedly connected with a supporting plate, a limiting groove is formed in the supporting plate, the supporting plate is located on one side of the limiting groove and fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a two-way lead screw. The two sides, away from each other, of the two-way lead screw are in threaded connection with connecting plates, one sides of the connecting plates make contact with clamping plates, one sides of the clamping plates are in glue connection with buffer plates, one sides of the connecting plates are fixedly connected with base plates, guide grooves are formed in the bottom sides of the base plates, second motors are fixedly connected to the upper sides of the base plates, and the output ends of the second motors are fixedly connected with cross-shaped rods. The mechanical arm drives the connecting plate and the replaceable clamping plate to move, then the first motor drives the two-way lead screw to rotate, the buffer plate is promoted to make contact with the part, then the second motor drives the filler strip to rotate, the filler strip is located on the bottom side of the part, and the moving effect and the moving stability of the part can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy technology for parts, specifically to a protective clamping and feeding device for powder metallurgy parts. Background Technology

[0002] Powder metallurgy for parts is a process technology for manufacturing metal parts. It uses metal powder as raw material to manufacture various types of metal parts. Typically, the metal is heated to form a liquid metal, which is then atomized into small particles. After being mixed with other metal powders, an alloy raw material is formed. The powder is then transferred to a pressing structure through an injection structure for hot pressing. The part blank is then removed by a fixture (robotic arm or pushing structure) and finally sintered to form the final product.

[0003] When using a fixture to hold unsintered parts, the fixture usually applies sufficient external force to connect with the parts in order to ensure stable clamping. However, the surface of the parts has uneven surfaces, which makes the fixture prone to instability during clamping. Therefore, a two-stage clamping structure is set on the fixture to adapt to the uneven surfaces of the parts, which leads to the difficulty of clamping. At the same time, the parts have a certain temperature during the pressing process.

[0004] According to Chinese Patent Publication No. CN221955307U, "A Protective Clamping and Feeding Device for Powder Metallurgy Parts," the device primarily enhances the clamping tightness of the feeding device through the mutual cooperation of a bevel gear, a threaded rod, a conveying plate, a bidirectional lead screw, a clamping plate, a threaded hole, a screw, a clamping block, and a bevel gear. This facilitates clamping the stress points of the parts, improves the adaptability of the clamping device to irregularly shaped parts, promotes stable clamping during the feeding process, reduces the possibility of parts becoming loose and unstable during transmission, and reduces the possibility of parts falling and being damaged during transmission, thereby improving transmission efficiency. However, during the clamping process, manual adjustment of the knob is required to adapt to the concave and convex surfaces of the clamp, and the temperature will generate heat conduction, affecting manual adjustment.

[0005] Therefore, a protective clamping and feeding device for powder metallurgy parts is proposed to solve the problem that when the parts are clamped by the fixture at a certain temperature, the fixture size will expand due to thermal expansion, which will affect the clamping accuracy and stability of the fixture. Utility Model Content

[0006] The technical problem to be solved by this utility model is that during the process of a part being clamped by a fixture, the part being clamped by the fixture at a certain temperature will cause the fixture size to expand thermally, which will affect the clamping accuracy and stability of the fixture. Therefore, a protective clamping and feeding device for powder metallurgy parts is proposed.

[0007] The technical solution adopted by this utility model to solve the technical problem is: a protective clamping and feeding device for powder metallurgy parts, including a robotic arm, a support plate fixedly connected to one side of the robotic arm, a limit groove formed on the support plate, a first motor fixedly connected to the support plate on one side of the limit groove, a bidirectional lead screw fixedly connected to the output end of the first motor, connecting plates threadedly connected to the two mutually distant sides of the bidirectional lead screw, a clamping plate contacting one side of the connecting plate, a buffer plate glued to one side of the clamping plate, a pad fixedly connected to one side of the connecting plate, a guide groove formed on the bottom side of the pad, a second motor fixedly connected to the upper side of the pad, a cross rod fixedly connected to the output end of the second motor, a limit plate fixedly connected to the bottom end of the cross rod, a fixing sleeve contacting one side of the limit plate, and a pad strip fixedly connected to one side of the fixing sleeve.

[0008] As a preferred technical solution of this utility model, a spring is fixedly connected to one side of the fixed sleeve, one end of the spring is fixedly connected to the limiting plate, and the spring is sleeved on the cross rod. By setting the spring, the pad strip can be kept contracted and enter the guide groove under the condition of gravity, thereby facilitating the movement of the support plate.

[0009] As a preferred technical solution of this utility model, a sliding ball is rotatably embedded on the pad strip, and the sliding ball contacts the pad plate. By setting the sliding ball, the friction between the pad strip and the bottom side of the pad plate is reduced.

[0010] As a preferred technical solution of this utility model, the pad plate is in contact with the connecting plate, a protrusion is fixedly connected to one side of the connecting plate, a connecting groove is in contact with the protrusion, the connecting groove is located on the connecting plate, a positioning rod is inserted into the connecting plate, the positioning rod is threaded to the protrusion, and different clamping plates can be replaced by disassembling the positioning rod.

[0011] As a preferred technical solution of this utility model, a horizontal bar is fixedly connected to the side of the support plate near the limiting groove, an electric push rod is fixedly connected to the bottom end of the horizontal bar, and a pressure plate is fixedly connected to one end of the electric push rod. By setting the electric push rod to drive the pressure plate to press down and contact the workpiece, the stability of the workpiece movement can be improved.

[0012] This utility model has the following advantages: the connecting plate and replaceable clamping plate are moved by the robotic arm, and then the first motor drives the bidirectional lead screw to rotate, causing the buffer plate to contact the part. Then the second motor drives the pad to rotate, so that the pad is located on the bottom side of the part, which can greatly improve the movement effect and movement stability of the part. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a protective clamping and feeding device for powder metallurgy parts according to a preferred embodiment of the present invention.

[0014] Figure 2 This is a side cross-sectional view of the clamping plate of a protective clamping and feeding device for powder metallurgy parts according to a preferred embodiment of the present invention.

[0015] Figure 3 This is a three-dimensional structural diagram of the fixed sleeve of a protective clamping and feeding device for powder metallurgy parts according to a preferred embodiment of the present invention.

[0016] Figure 4 This is an enlarged structural diagram of point A of a protective clamping and feeding device for powder metallurgy parts according to a preferred embodiment of the present invention.

[0017] Explanation of reference numerals in the attached diagram: 1. Robotic arm; 2. Support plate; 3. Limiting groove; 4. Two-way lead screw; 5. Connecting plate; 6. Clamping plate; 7. Buffer plate; 8. Pad plate; 9. Guide groove; 10. Cross bar; 11. Horizontal bar; 12. Limiting plate; 13. Spring; 14. Fixing sleeve; 15. Pad strip; 16. Sliding ball; 17. Protrusion; 18. Connecting groove; 19. Positioning rod; 20. Electric push rod; 21. Pressure plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to the following: Figure 1-4The protective clamping and feeding device for powder metallurgy parts shown includes a robotic arm 1. A support plate 2 is fixedly connected to one side of the robotic arm 1. A limit groove 3 is formed on the support plate 2. A first motor is fixedly connected to the support plate 2 on one side of the limit groove 3. The first motor drives a bidirectional lead screw 4 to rotate, which can cause two connecting plates 5 to move relative to each other. Under the action of the protrusion 17 and the positioning rod 19, the clamping plate 6 can be clamped by the clamping plate 6 and the buffer plate 7. The buffer plate 7 is made of rubber material, which can fix the part by increasing friction. The output end of the first motor is fixedly connected to the bidirectional lead screw 4. Connecting plates 5 are threaded to both sides of the bidirectional lead screw 4 that are far apart from each other. One side of the connecting plate 5 contacts the clamping plate 6, and one side of the clamping plate 6 is glued together. A buffer plate 7 is connected to a connecting plate 5, and a pad 8 is fixedly connected to one side of the connecting plate 5. A guide groove 9 is opened on the bottom side of the pad 8. The guide groove 9 has an isosceles trapezoidal structure. The second motor drives the cross rod 10 to rotate, which causes the pad strip 15 to rotate. The fixing sleeve 14 and the limiting plate 12 will contract under the action of the spring 13, keeping the pad strip 15 in the guide groove 9. Then, under the action of the second motor, the pad strip 15 will be stretched by the force of the guide groove 9, thereby causing the pad strip 15 to be on the bottom side of the two clamping plates 6. The second motor is fixedly connected to the upper side of the pad 8. The output end of the second motor is fixedly connected to the cross rod 10. The bottom end of the cross rod 10 is fixedly connected to the limiting plate 12. The limiting plate 12 contacts the fixing sleeve 14 on one side, and the pad strip 15 is fixedly connected to the fixing sleeve 14 on one side.

[0020] A spring 13 is sleeved on the cross rod 10. The two ends of the spring 13 are fixedly connected to the fixing sleeve 14 and the limiting plate 12, respectively. By setting the spring 13, the pad strip 15 can be kept in the guide groove 9.

[0021] In this process, the pad 8 contacts the slider 16, and the slider 16 rotates and embeds itself in the pad strip 15, reducing friction.

[0022] The protrusion 17 is threaded with a positioning rod 19, which is inserted into the connecting plate 5. The connecting plate 5 has a connecting groove 18, which contacts the protrusion 17. The protrusion 17 is fixedly connected to one side of the connecting plate 5. The connecting plate 5 contacts the pad 8. By disassembling the positioning rod 19, different clamping plates 6 can be replaced to adapt to parts of different shapes.

[0023] The pressure plate 21 is fixedly connected to one end of the electric push rod 20, the electric push rod 20 is fixedly connected to the bottom end of the crossbar 11, and the crossbar 11 is fixedly connected to the side of the support plate 2 near the limiting groove 3. By setting the electric push rod 20 to extend, the pressure plate 21 contacts the upper side of the part, thereby achieving the effect of stabilizing the part.

[0024] Working principle: After the powder metallurgy part is pressed into shape, the appropriate clamping plate 6 is replaced according to the shape of the part, and it is fixed by the positioning rod 19 limiting the protrusion 17. The robotic arm 1 drives the support plate 2 to move close to the part. At this time, the first motor drives the bidirectional lead screw 4 to rotate, which can drive the connecting plate 5 and the clamping plate 6 to move relative to each other. At this time, the buffer plate 7 contacts the part. When the part is suspended, the second motor starts to drive the pad strip 15 to rotate and be located on the bottom side of the part. Then the electric push rod 20 extends and causes the pressure plate 21 to contact the upper side of the part, thereby achieving stable positioning of the part and having a buffering effect to avoid damage to the part.

[0025] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0026] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective clamping and feeding device for powder metallurgy parts, comprising a robotic arm (1), characterized in that, A support plate (2) is fixedly connected to one side of the robotic arm (1). A limit groove (3) is opened on the support plate (2). A first motor is fixedly connected to the support plate (2) on one side of the limit groove (3). A bidirectional lead screw (4) is fixedly connected to the output end of the first motor. A connecting plate (5) is threaded to both sides of the bidirectional lead screw (4). A clamping plate (6) is in contact with one side of the connecting plate (5). A buffer plate (7) is glued to one side of the clamping plate (6). A pad (8) is fixedly connected to one side of the connecting plate (5). A guide groove (9) is opened on the bottom side of the pad (8). A second motor is fixedly connected to the upper side of the pad (8). A cross rod (10) is fixedly connected to the output end of the second motor. A limit plate (12) is fixedly connected to the bottom end of the cross rod (10). A fixing sleeve (14) is in contact with one side of the limit plate (12). A pad strip (15) is fixedly connected to one side of the fixing sleeve (14).

2. The protective clamping and feeding device for powder metallurgy parts as described in claim 1, characterized in that, A spring (13) is fixedly connected to one side of the fixed sleeve (14). One end of the spring (13) is fixedly connected to the limiting plate (12). The spring (13) is sleeved on the cross rod (10).

3. The protective clamping and feeding device for powder metallurgy parts as described in claim 1, characterized in that, A slider (16) is rotatably embedded in the pad (15), and the slider (16) contacts the pad (8).

4. The protective clamping and feeding device for powder metallurgy parts as described in claim 3, characterized in that, The pad (8) contacts the connecting plate (5). A protrusion (17) is fixedly connected to one side of the connecting plate (5). A connecting groove (18) contacts the protrusion (17). The connecting groove (18) is located on the connecting plate (5). A positioning rod (19) is inserted into the connecting plate (5). The positioning rod (19) is threadedly connected to the protrusion (17).

5. The protective clamping and feeding device for powder metallurgy parts as described in claim 4, characterized in that, A horizontal bar (11) is fixedly connected to the side of the support plate (2) near the limiting groove (3). An electric push rod (20) is fixedly connected to the bottom end of the horizontal bar (11). A pressure plate (21) is fixedly connected to one end of the electric push rod (20).

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