Pressing device for thin-wall powder metallurgy shaft sleeve

Abstract

The utility model discloses a pressing device for a thin-wall powder metallurgy shaft sleeve, and particularly relates to the technical field of shaft sleeve production, the pressing device comprises a mounting frame, a lower die, an upper die and a first hydraulic cylinder, the top end and the bottom end of the first hydraulic cylinder are fixedly connected with the mounting frame and the upper die respectively, and supporting frames are fixedly connected to the two sides of the lower die; and the bottom ends of the two supporting frames are fixedly connected with the mounting frame, the bottom end of the mounting frame is fixedly connected with a bottom frame, and a feeding assembly is arranged on one side of the bottom frame. The piston rod on the hydraulic cylinder extends to drive the discharging hopper to horizontally move rightwards, the spiral conveyor works to extract powder in the material storage box, the powder is discharged into the lower die downwards through the discharging hopper, the piston rod on the first hydraulic cylinder extends to drive the upper die to move downwards, the powder in the lower die is pressed, operation is easy, and efficiency is high. Manual powder feeding is not needed, the labor intensity of workers is effectively reduced, and meanwhile the machining efficiency of the shaft sleeve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeve production, and more specifically, to a pressing device for a thin-walled powder metallurgy shaft sleeve. Background Art

[0002] The manufacturing process for thin-walled powder metallurgy bushings involves using metal powder as the raw material and pressing it into shape through a mold. When producing thin-walled bushings, traditional powder metallurgy pressing methods are difficult to directly form due to the thin wall thickness. Therefore, it is usually necessary to first produce a thicker-walled bushing, and then use subsequent processing (such as metal cutting) to thin the wall thickness to the required size.

[0003] After searching, the Chinese patent with announcement number CN210877548U discloses a powder metallurgy pressing mold. By setting a fixed tube, a telescopic tube, a shielding plate and a support frame, it is conducive to shielding work during the work process, preventing dust generated during work from polluting the working environment and increasing the shielding function; setting a socket, a plug-in rod, an adsorption block, an annular collection box and a female mold is conducive to collecting metal powder scattered on the upper end of the female mold during the work process, facilitating the collection work and saving resources.

[0004] When the above-mentioned pressing mold is in use, the powder to be pressed is placed in the middle position of the upper inner side of the female mold, and the fixing seat and the outer upper mold are pushed downward by the pressing equipment to perform powder pressing metallurgical work. However, manual powder addition is required, which not only increases the labor intensity of the staff, but also reduces the processing efficiency of the sleeve. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pressing device for a thin-walled powder metallurgy sleeve, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressing device for a thin-walled powder metallurgy sleeve, comprising a mounting frame, a lower mold, an upper mold and a first hydraulic cylinder, the top and bottom ends of the first hydraulic cylinder are fixedly connected to the mounting frame and the upper mold respectively, both sides of the lower mold are fixedly connected to a support frame, and the bottom ends of the two support frames are fixedly connected to the mounting frame, the bottom end of the mounting frame is fixedly connected to the bottom frame, and a feeding assembly is provided on one side of the bottom frame, the feeding assembly comprises a storage box, a vertical cylinder, a screw conveyor, a hose, a discharge hopper, a side plate, a hydraulic cylinder and a cross plate, the storage box is fixedly installed on one side of the bottom frame, and the top end of the storage box is fixedly connected to the vertical cylinder, the screw conveyor is fixedly installed on the vertical cylinder, the two ends of the hose are fixedly connected to the vertical cylinder and the discharge hopper respectively, and the top end of the side plate is fixedly connected to the discharge hopper.

[0007] Furthermore, both ends of the hydraulic cylinder are fixedly connected to the transverse plate and the side plates respectively, and the transverse plate is fixedly mounted on one side of the mounting frame.

[0008] Furthermore, a piston is movably provided on one side of the vertical cylinder, and the bottom end of the piston extends into the interior of the storage box.

[0009] It can be seen that in the above technical solution, the piston is rotated and moved away from the storage box, and then new powder is added to the storage box.

[0010] Furthermore, a discharge assembly is provided at the bottom of the lower mold, and the discharge assembly includes a stepper motor, forward and reverse screw rods, two sliders, two baffles, four side plates and a slide rod. The stepper motor is fixedly installed on the other side of the bottom frame, and the output shaft end of the stepper motor is fixedly connected to the forward and reverse screw rods.

[0011] Furthermore, both ends of the forward and reverse screw rods are movably connected to the bottom frame through bearings, the top ends of the two sliders are fixedly connected to the two baffles respectively, one side of the four side panels are fixedly connected to the two sliders respectively, and the four side panels are movably mounted on the two forward and reverse screw rods and the two sliding rods, and both ends of the two sliding rods are fixedly connected to the bottom frame.

[0012] Furthermore, a filter plate is provided at the bottom of the discharging assembly, and the filter plate is fixedly installed inside the bottom frame.

[0013] It can be seen that in the above technical solution, the product remains on the top of the filter plate and the residual powder passes through the filter plate.

[0014] Furthermore, an inclined plate is provided at the bottom of the filter plate, and the inclined plate is fixedly installed inside the bottom frame.

[0015] It can be seen that in the above technical solution, the inclined plate guides the powder.

[0016] Technical effects and advantages of this utility model:

[0017] 1. The utility model drives the side plate to move horizontally to the right by extending the piston rod on the hydraulic cylinder, thereby driving the discharge hopper to move horizontally to the right and placing the discharge hopper directly above the lower mold. The screw conveyor extracts the powder in the storage box and conveys it to the hose through the vertical cylinder. Finally, the powder is discharged downward into the lower mold through the discharge hopper. The piston rod on the first hydraulic cylinder extends and drives the upper mold to move downward, pressing the powder in the lower mold. The operation is simple and there is no need to manually add powder, which effectively reduces the labor intensity of the staff and improves the processing efficiency of the sleeve.

[0018] 2. The utility model drives the forward and reverse screws to rotate through the operation of a stepper motor. Since two side plates are threadedly connected to the forward and reverse screws, and the other two side plates cooperate with the slide rod to limit the rotation of the two sliders, the forward and reverse screws can drive the two sliders to move back to back, thereby driving the baffles to move back to back, so that the product in the lower mold can move downward. Similarly, the reversal of the stepper motor can drive the two baffles to move toward each other, closing the bottom of the lower mold. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a bottom view of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the installation frame and the inclined plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the discharging assembly of the utility model;

[0024] Figure 5 This is a schematic structural diagram of the feeding component of the present utility model.

[0025] In the figure: 1. Mounting frame; 2. Support frame; 3. Lower mold; 4. Upper mold; 5. Discharge assembly; 6. Bottom frame; 7. Filter plate; 8. Inclined plate; 9. Feeding assembly; 10. Piston; 11. First hydraulic cylinder; 501. Stepper motor; 502. Forward and reverse screw rods; 503. Slider; 504. Baffle; 505. Side plate; 506. Slide rod; 901. Storage box; 902. Vertical cylinder; 903. Screw conveyor; 904. Hose; 905. Discharge hopper; 906. Side plate; 907. Hydraulic cylinder; 908. Horizontal plate. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0027] Refer to the instruction manual Figure 1-5 The pressing device of the thin-walled powder metallurgy sleeve of this embodiment includes a mounting frame 1, a lower mold 3, an upper mold 4 and a first hydraulic cylinder 11. The top and bottom ends of the first hydraulic cylinder 11 are fixedly connected to the mounting frame 1 and the upper mold 4 respectively. Both sides of the lower mold 3 are fixedly connected with support frames 2, and the bottom ends of the two support frames 2 are fixedly connected to the mounting frame 1. The bottom end of the mounting frame 1 is fixedly connected with a bottom frame 6. A feeding assembly 9 is provided on one side of the bottom frame 6. The feeding assembly 9 includes a storage box 9. 01, vertical cylinder 902, screw conveyor 903, hose 904, discharge hopper 905, side plate 906, hydraulic cylinder 907 and cross plate 908, the storage box 901 is fixedly installed on one side of the bottom frame 6, and the top of the storage box 901 is fixedly connected with the vertical cylinder 902, the screw conveyor 903 is fixedly installed on the vertical cylinder 902, the two ends of the hose 904 are fixedly connected with the vertical cylinder 902 and the discharge hopper 905 respectively, and the top of the side plate 906 is fixedly connected with the discharge hopper 905.

[0028] Furthermore, the two ends of the hydraulic cylinder 907 are fixedly connected to the horizontal plate 908 and the side plate 906 respectively, and the horizontal plate 908 is fixedly installed on one side of the mounting frame 1. A piston 10 is movably provided on one side of the vertical cylinder 902, and the bottom end of the piston 10 extends into the interior of the storage box 901.

[0029] Furthermore, a discharging assembly 5 is provided at the bottom of the lower mold 3, which includes a stepping motor 501, a forward and reverse screw rod 502, two sliders 503, two baffles 504, four side plates 505 and a slide rod 506. The stepping motor 501 is fixedly mounted on the other side of the bottom frame 6, and the output shaft end of the stepping motor 501 is fixedly connected to the forward and reverse screw rod 502, and both ends of the forward and reverse screw rod 502 are movably connected to the bottom frame 6 through bearings. The top ends of the two sliders 503 are respectively fixedly connected to the two baffles 504, and one side of the four side plates 505 is respectively fixedly connected to the two sliders 503, and the four side plates 505 are respectively movably mounted on the two forward and reverse screw rods 502 and the two slide rods 506, and both ends of the two slide rods 506 are fixedly connected to the bottom frame 6. A filter plate 7 is provided at the bottom of the discharging assembly 5, and the filter plate 7 is fixedly mounted on the inside of the bottom frame 6. An inclined plate 8 is provided at the bottom of the filter plate 7, and the inclined plate 8 is fixedly mounted on the inside of the bottom frame 6.

[0030] Among them, the stepper motor 501 is started, and the stepper motor 501 drives the forward and reverse screw rods 502 to rotate. Since two side plates 505 are threadedly connected to the forward and reverse screw rods 502, and the other two side plates 505 cooperate with the slide rod 506 to limit the rotation of the two sliders 503, the forward and reverse screw rods 502 can drive the two sliders 503 to move back to back, thereby driving the baffle 504 to move back to back, so that the product in the lower mold 3 can move downward. Similarly, the reversal of the stepper motor 501 can drive the two baffles 504 to move toward each other, closing the bottom of the lower mold 3. The structure is simple and easy to use. At the same time, the product remains on the top of the filter plate 7, and the remaining powder passes through the filter plate 7, and the inclined plate 8 guides the powder.

[0031] The method of using this embodiment is:

[0032] When in use, the hydraulic cylinder 907 is started, and the piston rod on the hydraulic cylinder 907 is extended to drive the side plate 906 to move horizontally to the right, thereby driving the discharge hopper 905 to move horizontally to the right, and making the discharge hopper 905 located just above the lower mold 3. At the same time, the discharge hopper 905 drives the hose 904 to stretch, and then the screw conveyor 903 is started. The screw conveyor 903 extracts the powder in the storage box 901 and transports it to the hose 904 through the vertical cylinder 902, and finally discharges it downward into the lower mold 3 through the discharge hopper 905. Similarly, the piston rod on the hydraulic cylinder 907 is contracted to drive the discharge hopper 905 to move horizontally to the left, and then the first hydraulic cylinder 11 is started. The piston rod on the first hydraulic cylinder 11 is extended to drive the upper mold 4 to move downward, pressing the powder in the lower mold 3. The operation is simple, no manual powder addition is required, the labor intensity of the staff is effectively reduced, and the processing efficiency of the sleeve is improved. The piston 10 is rotated and kept away from the storage box 901, and then new powder is added to the storage box 901.

[0033] The contents not described in detail in the specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the existing technology and are not described here.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressing device for a thin-walled powder metallurgy sleeve, comprising a mounting frame (1), a lower die (3), an upper die (4), and a first hydraulic cylinder (11), wherein the top and bottom ends of the first hydraulic cylinder (11) are fixedly connected to the mounting frame (1) and the upper die (4), respectively, and characterized in that: Both sides of the lower mold (3) are fixedly connected to support frames (2), and the bottom ends of the two support frames (2) are fixedly connected to the installation frame (1), and the bottom end of the installation frame (1) is fixedly connected to the bottom frame (6). A feeding assembly (9) is provided on one side of the bottom frame (6), and the feeding assembly (9) includes a storage box (901), a vertical cylinder (902), a screw conveyor (903), a hose (904), a discharge hopper (905), and a side plate (906). , a hydraulic cylinder (907) and a transverse plate (908), the storage box (901) is fixedly mounted on one side of the bottom frame (6), and the top end of the storage box (901) is fixedly connected to the vertical cylinder (902), the screw conveyor (903) is fixedly mounted on the vertical cylinder (902), the two ends of the hose (904) are fixedly connected to the vertical cylinder (902) and the discharge hopper (905), and the top end of the side plate (906) is fixedly connected to the discharge hopper (905).

2. The pressing device for a thin-walled powder metallurgy sleeve according to claim 1, characterized in that: The two ends of the hydraulic cylinder (907) are fixedly connected to the transverse plate (908) and the side plate (906), respectively, and the transverse plate (908) is fixedly mounted on one side of the mounting frame (1).

3. The pressing device for a thin-walled powder metallurgy sleeve according to claim 1, characterized in that: A piston (10) is movably provided on one side of the vertical cylinder (902), and the bottom end of the piston (10) extends into the interior of the storage box (901).

4. The pressing device for a thin-walled powder metallurgy sleeve according to claim 1, characterized in that: A discharge assembly (5) is provided at the bottom of the lower mold (3), and the discharge assembly (5) includes a stepper motor (501), a forward and reverse screw rod (502), two sliders (503), two baffles (504), four side plates (505) and a slide rod (506). The stepper motor (501) is fixedly mounted on the other side of the bottom frame (6), and the output shaft end of the stepper motor (501) is fixedly connected to the forward and reverse screw rod (502).

5. The pressing device for a thin-walled powder metallurgy sleeve according to claim 4, characterized in that: Both ends of the forward and reverse screw rods (502) are movably connected to the bottom frame (6) through bearings, the top ends of the two sliders (503) are fixedly connected to the two baffles (504), one side of the four side plates (505) is fixedly connected to the two sliders (503), and the four side plates (505) are movably sleeved on the two forward and reverse screw rods (502) and the two slide rods (506), and both ends of the two slide rods (506) are fixedly connected to the bottom frame (6).

6. The pressing device for a thin-walled powder metallurgy sleeve according to claim 4, characterized in that: A filter plate (7) is provided at the bottom of the discharge assembly (5), and the filter plate (7) is fixedly mounted inside the bottom frame (6).

7. The pressing device for a thin-walled powder metallurgy sleeve according to claim 6, characterized in that: An inclined plate (8) is provided at the bottom of the filter plate (7), and the inclined plate (8) is fixedly mounted inside the bottom frame (6).

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