Profile forming system and method

Abstract

The invention relates to the field of powder metallurgy systems, in particular to a sectional material forming system and method.The sectional material forming system comprises an upper die base and an upper die slidably connected to the upper die base, a spring shaft is fixedly connected into the upper die base and slidably connected with the upper die, and a spring is installed on the spring shaft; the upper end and the lower end of the spring are fixedly connected with the upper die base and the upper die respectively, three extrusion columns are arranged in the upper die base and slidably connected with the upper die, the upper end of the upper die base is fixedly connected with an upper plate, the lower end of the upper plate is fixedly connected with four sliding rods, and the lower ends of the four sliding rods are fixedly connected with a lower plate. The gear shaft die-casting machine has the beneficial effects that the secondary stamping technology is adopted, and the strength of a machined gear shaft is further improved.

Description

Technical Field

[0001] This invention relates to the field of powder metallurgy, and more specifically to a profile forming system and method. Background Technology

[0002] Profile forming is a plastic processing method that applies strong pressure to a metal billet placed in a mold cavity or extrusion cylinder, forcing the metal billet to undergo directional plastic deformation and be extruded from the die hole of the extrusion mold, thereby obtaining the desired cross-sectional shape, size and certain mechanical properties to obtain parts or semi-finished products. Extrusion molding can produce not only rods, tubes, profiles and wires with simple cross-sectional shapes, but also profiles and tubes with complex cross-sectional shapes. Powder metallurgy is an industrial technology that produces metal materials, composite materials and various types of products by producing metal powder or using metal powder as raw material, and then forming and sintering them. In the powder metallurgy production process, a powder die casting machine is used to pour the produced metal powder evenly into a mold and press the metal powder to obtain products of different shapes. However, existing powder metallurgy systems can lead to excessively low shaft strength when processing longitudinal shafts. Summary of the Invention

[0003] This invention relates to the field of powder metallurgy systems, and more specifically to a profile forming system and method, the advantage of which is that by using secondary stamping technology, the strength of the processed gear shaft is further improved.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A profile forming system includes an upper mold base and an upper mold slidably connected to the upper mold base. A spring shaft is fixedly connected inside the upper mold base and slidably connected to the upper mold. A spring is installed on the spring shaft, and the upper and lower ends of the spring are fixedly connected to the upper mold base and the upper mold, respectively. Three extrusion columns are provided inside the upper mold base and slidably connected to the upper mold.

[0006] Furthermore, an upper plate is fixedly connected to the upper end of the upper mold base, four sliding rods are fixedly connected to the lower end of the upper plate, a lower plate is fixedly connected to the lower end of the four sliding rods, and a die-casting table is slidably connected to the four sliding rods.

[0007] Furthermore, a lower mold is slidably connected inside the die-casting table, and a sliding plate is slidably connected to the upper part of the four sliding rods. The sliding plate is fixedly connected to the lower mold, and a limit ring is provided on each sliding rod.

[0008] Furthermore, two lead screws are fixedly connected to the die-casting platform, each lead screw is threaded with a slider, and each slider is fixedly connected with a connecting bracket.

[0009] Furthermore, an ejector box is fixedly connected between the two connecting frames, and two rollers are rotatably connected to the ejector box, with universal joints fixedly connected to each roller. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 This is a schematic diagram of the overall structure of the profile forming system;

[0012] Figure 2 This is a structural diagram of the upper mold;

[0013] Figure 3 This is a structural schematic diagram of the longitudinal section of the upper mold;

[0014] Figure 4 This is a schematic diagram of the upper mold base;

[0015] Figure 5 This is a structural diagram of the die-casting platform and the upper mold;

[0016] Figure 6 This is a structural diagram of the upper and lower molds;

[0017] Figure 7 This is a structural diagram of the lead screw and ejector box;

[0018] Figure 8 This is a structural schematic diagram of the cross-section of the ejector box;

[0019] Figure 9 This is a schematic diagram of the internal transmission mechanism for ejecting the box;

[0020] Figure 10 This is a schematic diagram of the structure at the bottom of the die-casting platform;

[0021] Figure 11 This is a schematic diagram of the stuffing box structure;

[0022] Figure 12 This is a structural diagram of the finished part. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] The following is in conjunction with the appendix Figure 1-4Detailed description: A profile forming system and method, the profile forming system includes an upper mold base 101, an upper mold 102, a spring shaft 103, and a spring 104. The upper mold 102 is slidably connected to the upper mold base 101 via a sliding groove I. The spring shaft 103 is fixedly connected to the upper mold base 101 by welding. The upper mold 102 and the spring shaft 103 are slidably connected through a round hole I. The spring 104 is mounted on the spring shaft 103. The upper and lower ends of the spring 104 are fixedly connected to the upper mold 102 and the upper mold base 101 by welding, respectively. Three extrusion pillars 105 are provided inside the upper mold base 101. The extrusion pillars 105 are slidably connected to the upper mold 102 through a round hole II.

[0025] Furthermore, the upper mold base 101 is a hollow cylinder with an opening at one end. The upper mold 102 is slidably connected within the upper mold base 101. The upper mold base 101 restricts the freedom of the upper mold 102, allowing it to slide only up and down along the upper mold base 101. Both ends of the upper mold base 101 are provided with sliding grooves I, and both ends of the upper mold 102 are provided with sliders I. Each slider I is slidably connected within its corresponding sliding groove I, limiting the sliding of the upper mold 102. The upper end of the upper mold 102 has a circular hole I, and a spring shaft 103 is slidably connected within this hole I. The spring shaft 103 provides installation space for the spring 104, preventing misalignment of the spring 104 during compression. The upper mold 102 has three circular holes II. Each extrusion column 105 is slidably connected to three circular holes II. The lower end of the upper die 102 is provided with a cylindrical machined shaft hole. The three circular holes II are machined holes. The upper die 102 can form metal powder during stamping. In the forming process, when the lower end of the upper die 102 contacts the metal powder, the metal powder enters into the three extrusion columns 105. The spring 104 contracts and the upper die 102 slides upward along the upper die seat 101. The extrusion column 105 performs the first stamping on the metal powder. When the upper die 102 finishes sliding, the extrusion column 105 and the upper die 102 jointly perform stamping to complete the forming of the part. Using two stampings can reduce the flow of metal powder into the three circular holes III during the forming of the three shafts, which would reduce the strength of the part.

[0026] The following is in conjunction with the appendix Figure 1 In detail, the profile forming system further includes an upper plate 201, four sliding rods 202, a lower plate 203, and a die-casting table 204. The upper plate 201 is fixedly connected to the upper end of the upper mold base 101 by welding. The four sliding rods 202 are fixedly connected to the lower end of the upper plate 201 by welding. The lower plate 203 is fixedly connected to the lower end of the four sliding rods 202 by welding. The die-casting table 204 is slidably connected to the four sliding rods 202 through a circular hole III.

[0027] Furthermore, the upper plate 201 and the lower plate 203 provide support and installation space for the sliding rod 202. The die-casting table 204 is provided with four circular holes III, which are slidably connected to the four sliding rods 202 respectively, thus restricting the degree of freedom of the die-casting table 204 and allowing the die-casting table 204 to slide up and down in the vertical direction.

[0028] The following is in conjunction with the appendix Figure 5 and 6 In detail, the profile forming system further includes a lower mold 205, a sliding plate 206, and a limiting ring 207. The lower mold 205 is slidably connected to the die-casting table 204 through a circular hole IV. The sliding plate 206 is slidably connected to the sliding rod 202 through a circular hole V. The lower mold 205 and the sliding plate 206 are fixedly connected by welding. The limiting rings 207 are all provided on each sliding rod 202.

[0029] Furthermore, a circular hole IV is provided in the center of the die-casting table 204, and the lower mold 205 is slidably connected in the circular hole IV. The three extrusion columns 105, the upper mold 102, the die-casting table 204 and the lower mold 205 together form a stamping die. Circular holes V are provided at the four corners of the sliding plate 206. The four circular holes V are slidably connected to the four sliding rods 202 respectively, so that the sliding plate 206 can slide up and down along the sliding rods 202. The limiting ring 207 limits the up and down sliding stroke of the sliding plate 206 and the lower mold 205.

[0030] The following is in conjunction with the appendix Figure 7 In detail, the profile forming system also includes two lead screws 208, two sliders 209 and two connecting frames 210. The two lead screws 208 are fixedly connected to the die casting table 204 by welding. The sliders 209 are threadedly connected to each lead screw 208. The connecting frames 210 are fixedly connected to each slider 209 by welding.

[0031] Furthermore, the die-casting table 204 provides installation space for the lead screw 208, which is driven by a stepper motor to ensure the accuracy of the forward stroke of the slider 209.

[0032] The following is in conjunction with the appendix Figure 8 and 9 In detail, the profile forming system further includes an ejector box 301, two rollers 302 and two universal joints 303. The ejector box 301 is fixedly connected to the two connecting frames 210 by welding. The two rollers 302 are rotatably connected to the ejector box 301 through shaft hole I. The two universal joints 303 are fixedly connected to the two rollers 302 respectively by flat keys.

[0033] Furthermore, the connecting frame 210 serves as a link, and the slider 209 drives the ejector box 301 to move forward and backward through the connecting frame 210. The front end of the ejector box 301 is provided with two shaft holes I that are 60° to the front end plane of the ejector box 301. The roller 302 is provided with a rotating shaft I. The rotating shafts I of the two rollers 302 are respectively rotatably connected in the two shaft holes I, so that the two rollers 302 can rotate at the front end of the ejector box 301.

[0034] The following is in conjunction with the appendix Figure 8 and 9 In detail, the profile forming system further includes a shaft frame 304, two shafts 305, gear I 306, gear II 307, and a motor 308. The shaft frame 304 is fixedly connected to the ejection box 301 by welding. The two shafts 305 are rotatably connected to the shaft frame 304 through shaft holes II. Two universal shafts 303 are fixedly connected to the two shafts 305 respectively by flat keys. Gear I 306 are fixedly connected to the other end of the two shafts 305 by flat keys. The two gears I 306 mesh. The motor 308 is fixedly connected to the shaft frame 304 by bolts. Gear II 307 is fixedly connected to the output shaft of the motor 308 passing through the shaft frame 304 by a flat key. Gear I 306 located at the right end meshes with gear II 307.

[0035] Furthermore, the universal joint 303 can transmit torque to the inclined roller 302 of the ejector box 301. The rotating shaft frame 304 provides support and installation space for the rotating shaft 305. The rotating shaft frame 304 is provided with two shaft holes II. The two rotating shafts 305 are rotatably connected in the two shaft holes II respectively. The motor 308 drives the gear II 307 located at the right end to rotate. The gear II 307 located at the right end drives the gear II 307 located at the left end to rotate. The gear II 307 drives the roller 302 to rotate through the rotating shaft 305 and the universal joint 303. The rotation of the two rollers 302 can drive the parts to move upward, further ensuring the demolding effect.

[0036] The following is in conjunction with the appendix Figure 10 In detail, the profile forming system also includes a support frame 401 and a telescopic rod 402. The support frame 401 is fixedly connected to the lower end of the die-casting table 204 by welding, and the telescopic rod 402 is fixedly connected to the lower plate 203 by welding. The bottom surface of the support frame 401 and the movable end of the telescopic rod 402 are fixedly connected by welding.

[0037] Furthermore, the sliding plate 206 is installed between the bottom of the support frame 401 and the die-casting table 204. The extension and retraction of the telescopic rod 402 can drive the die-casting table 204 to slide up and down through the support frame 401. When stamping begins, the telescopic rod 402 pushes the die-casting table 204 upward, and the support frame 401 drags the sliding plate 206 and the lower mold 205 upward together with the die-casting table 204 to complete the stamping process. Subsequently, the telescopic rod 402 drives the die-casting table 204 downward, and the sliding plate 206 remains stationary due to the friction of the sliding rod 202 until the die-casting table 204 and the lower mold 205 are aligned. 5. With the upper surface flush, the part is sent to the upper surface of the die-casting table 204. The lead screw 208 drives the roller 302 forward to push the part out of the mold. The bottom surface of the die-casting table 204 drives the sliding plate 206 to move downward. Then, the telescopic rod 402 drives the die-casting table 204 to rise. The sliding plate 206 remains stationary due to the friction of the sliding rod 202 until the circular hole IV on the die-casting table 204 can hold enough metal powder. The lead screw 208 drives the roller 302 to complete the filling of metal powder. Then, the lead screw 208 drives the filling box 501 to retract to the reset end, completing the stamping and metal powder filling.

[0038] The following is in conjunction with the appendix Figure 11 In detail, the profile forming system also includes a stuffing box 501 and a feed pipe 502. The stuffing box 501 is fixedly connected to the right end of the ejector box 301 by welding, and the feed pipe 502 is disposed on the stuffing box 501.

[0039] Furthermore, the packing box 501 is a hollow square box, and the feed pipe 502 is located at the rear end of the packing box 501 and communicates with the interior of the packing box 501. An opening is provided at the front end of the lower part of the packing box 501 for filling metal powder and to prevent the packing box 501 from sliding to the outside of the die-casting table 204 and causing the metal powder to spill. The interior of the packing box 501 is provided with a ramp so that the metal powder can slide to the opening. The packing box 501 and the ejected box 301 slide forward. When the packing box 501 slides above the circular hole IV on the die-casting table 204, the metal powder falls from the packing box 501 into the circular hole IV on the die-casting table 204. When sliding backward, the front wall of the packing box 501 can scrape the metal powder flat, thus completing the filling of metal powder.

[0040] The following is in conjunction with the appendix Figure 12 The part produced by the profile forming system described above is characterized in that: the part has three shafts and one shaft hole.

[0041] A method of using a profile forming system, comprising the method of the profile forming system of claim 7, characterized in that the method includes the following steps:

[0042] Step 1: Fill the metal powder into the packing box 501 through the feed pipe 502;

[0043] Step 2: The filling box 501 fills the metal powder into the die-casting table 204;

[0044] Step 3: The telescopic rod 402 extends, driving the die-casting table 204 and the lower mold 205 to move upward, cooperating with the upper mold 102 to complete the stamping;

[0045] Step 4: The telescopic rod 402 retracts, and the lower mold 205 ejects the part;

[0046] Step 5: The lead screw 208 drives the two lower plates 203 to push the part out, completing the profile forming of the part.

Claims

1. A profile forming system, characterized in that: It includes an upper mold base (101) and an upper mold (102) slidably connected to the upper mold base (101). A spring shaft (103) is fixedly connected inside the upper mold base (101). The spring shaft (103) is slidably connected to the upper mold (102). A spring (104) is installed on the spring shaft (103). The upper and lower ends of the spring (104) are fixedly connected to the upper mold base (101) and the upper mold (102) respectively. Three extrusion columns (105) are provided inside the upper mold base (101). The extrusion columns (105) are slidably connected to the upper mold (102).

2. The profile forming system according to claim 1, characterized in that: The upper mold base (101) is fixedly connected to an upper plate (201), and the lower end of the upper plate (201) is fixedly connected to four sliding rods (202). The lower ends of the four sliding rods (202) are fixedly connected to a lower plate (203), and a die-casting table (204) is slidably connected to the four sliding rods (202).

3. The profile forming system according to claim 2, characterized in that: The die-casting table (204) is slidably connected to a lower mold (205), and four sliding rods (202) are slidably connected to a sliding plate (206). The sliding plate (206) is fixedly connected to the lower mold (205), and each sliding rod (202) is provided with a limit ring (207).

4. The profile forming system according to claim 2, characterized in that: Two lead screws (208) are fixedly connected to the die-casting table (204), and each lead screw (208) is threadedly connected to a slider (209). Each slider (209) is fixedly connected to a connecting bracket (210).

5. The profile forming system according to claim 4, characterized in that: An ejector box (301) is fixedly connected between the two connecting frames (210). Two rollers (302) are rotatably connected to the ejector box (301), and a universal joint (303) is fixedly connected to each of the two rollers (302).

6. The profile forming system according to claim 5, characterized in that: A rotating frame (304) is fixedly connected inside the ejector box (301). Two rotating shafts (305) are rotatably connected to the rotating frame (304). The two rotating shafts (305) are fixedly connected to two universal joints (303) respectively. Gear I (306) is fixedly connected to the other end of each of the two rotating shafts (305). The two gears I (306) mesh. A motor (308) is fixedly connected to the rotating frame (304). The output shaft of the motor (308) passes through the rotating frame (304) and is fixedly connected to gear II (307). Gear II (307) meshes with gear I (306) located at the right end.

7. The profile forming system according to claim 4, characterized in that: The lower end of the die-casting table (204) is fixedly connected to a support frame (401), and a telescopic rod (402) is fixedly connected to the lower plate (203). The movable end of the telescopic rod (402) is fixedly connected to the bottom surface of the support frame (401).

8. The profile forming system according to claim 7, characterized in that: The right end of the ejector box (301) is fixedly connected to a packing box (501), and a feed pipe (502) is provided on the packing box (501).

9. The part manufactured by the profile forming system according to claim 1 is characterized in that: This part has three shafts and one shaft hole.

10. A method of using a profile forming system, comprising the method of using the profile forming system of claim 7, characterized in that, The method includes the following steps: Step 1: Fill the metal powder into the packing box (501) through the feed pipe (502); Step 2: The filling box (501) fills the metal powder into the die-casting table (204); Step 3: The telescopic rod (402) extends, driving the die-casting table (204) and the lower mold (205) to move upward, cooperating with the upper mold (102) to complete the stamping; Step 4: The telescopic rod (402) retracts, and the lower mold (205) ejects the part; Step 5: The lead screw (208) drives the two lower plates (203) to push the part out to complete the profile forming of the part.

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