A tungsten steel powder pressing and molding equipment and pressing process

Abstract

The present invention discloses a tungsten steel powder pressing and forming equipment, which relates to the technical field of metal powder pressing and forming, and comprises a machine base, a support frame is provided on the machine base, and the support frame extends outward to the outside of the machine base, and a feeding station, a scraping station and a pressing station are provided at the upper end of the support frame in sequence, a scraping mechanism is provided above the scraping station, and a pressing mechanism is provided above the pressing station, a movable chassis is slidably provided at the upper end of the support frame, a feeding frame is fixedly provided at the upper end of the movable chassis, and the feeding frame is an open structure above and below, and a bearing plate is movably provided inside the feeding frame, and the bearing plate is controlled to rise and fall by a lifting mechanism. The present invention can scrape and level the tungsten steel powder mixture by driving a scraper to reciprocate on the upper surface of the tungsten steel powder mixture through the scraping mechanism, and can also reversely push and level the accumulated materials accumulated at both ends of the feeding frame, thereby ensuring the flatness of the upper surface of the tungsten steel powder mixture.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder pressing and forming, and in particular to tungsten steel powder pressing and forming equipment and a pressing process. Background Art

[0002] Tungsten steel (hard alloy) has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc., especially its high hardness and wear resistance, which remain basically unchanged even at a temperature of 500°C, and still have high hardness at 1000°C. Pressing tungsten steel powder into a shape is a common powder metallurgy process. After pressing and forming, sintering is required to improve density and strength. It is mainly used to manufacture hard alloy products.

[0003] When pressing tungsten steel powder into shape, you first need to add material into the pressing mold and then scrape it. Larger-sized plates are generally scraped manually. The upper end of the tungsten steel powder mixture is repeatedly scraped flat. Experienced workers can easily scrape it evenly, but inexperienced workers need a longer time and cannot guarantee the flatness of the upper end surface of the tungsten steel powder mixture, thus affecting the quality and efficiency of production. In addition, after the tungsten steel plate is pressed and formed, it needs to be sintered to have greater mechanical strength. Therefore, larger-sized plates will be at risk of deformation or breakage during transportation after demolding. Summary of the invention

[0004] The purpose of the present invention is to provide a tungsten steel powder pressing molding equipment and a pressing process to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a tungsten steel powder pressing and molding equipment, comprising a machine base, a support frame is provided on the machine base, and the support frame extends outward to the outside of the machine base, and a feeding station, a scraping station and a pressing station are respectively provided at the upper end of the support frame;

[0006] A scraping mechanism is provided above the scraping station, and a pressing mechanism is provided above the pressing station;

[0007] A movable bottom frame is slidably provided on the upper end of the support frame, a feeding frame is fixedly provided on the upper end of the movable bottom frame, and the feeding frame is an open structure at the top and bottom, a bearing plate is movably provided inside the feeding frame, and the bearing plate is controlled to rise and fall by a lifting mechanism;

[0008] One side of the support frame is provided with three photoelectric sensors corresponding to the feeding station, the scraping station and the pressing station respectively, and one side of the movable frame is provided with a sensing block corresponding to the photoelectric sensor. When the sensing block moves to the position of the photoelectric sensor, the movable frame stops moving and performs corresponding mechanism actions;

[0009] The scraper mechanism includes a moving plate, a lifting plate and a scraper frame, a first telescopic rod is fixedly installed on the front of the moving plate, and the output direction of the first telescopic rod is downward, the output end of the first telescopic rod is fixedly connected to the lifting plate, two groups of first guide columns are arranged on the upper end of the scraper frame, the first guide column is slidably connected with the lifting plate up and down, a first limit block is arranged on the upper end of the first guide column, the lower end of the first limit block is abutted against the upper end of the lifting plate, a spring is sleeved on the outer diameter of the first guide column, the spring is located between the scraper frame and the lifting plate, and a scraper for leveling tungsten steel powder is fixedly installed on the front of the scraper frame;

[0010] The scraper mechanism also includes a first limiting frame located at both ends of the scraper frame, a second guide column is provided on the inner side of the first limiting frame, a moving block is slidably installed on the second guide column, a fixed shaft is provided on one side of the moving block, the fixed shaft passes through one side of the first limiting frame and is movably connected to the first limiting frame, a roller is rotatably installed on the outer end of the fixed shaft, and the roller is located outside the first limiting frame;

[0011] The movable chassis is provided with outer edge plates on both sides, the upper ends of the outer edge plates are provided with inner raceways and outer raceways, the upper ends of the inner raceways are provided with a group of inner triangular blocks, the upper ends of the outer raceways are provided with a group of outer triangular blocks, the tops of the inner triangular blocks and the outer triangular blocks are provided with rounded corners, and the inner triangular blocks and the outer triangular blocks are respectively close to the two ends of the movable chassis;

[0012] Two sets of guide plates corresponding to the inner triangular block and the outer triangular block are arranged at two ends of the movable chassis, a guide column is arranged at the upper end of the movable block, and an inclined surface matching the guide column is arranged on the guide plate.

[0013] Preferably, the pressing mechanism comprises a press installed at the upper end of a machine base, and a pressing plate matching a feeding frame is provided at an output end of the press.

[0014] Preferably, the lifting mechanism includes a top plate located below the movable base frame, the top plate is controlled to rise and fall by a second telescopic rod, the second telescopic rod is fixedly mounted at the lower end of the movable base frame, four third guide columns are provided at the upper end of the top plate, the third guide columns penetrate the movable base frame and are connected to the movable base frame for vertical sliding connection, a top block is provided at the upper end of the third guide column, the lower end of the top block abuts against the inner bottom of the movable base frame, and the upper end abuts against the lower end of the load-bearing plate.

[0015] Preferably, two knock hammers are provided at the lower end of the top plate, and the two knock hammers are respectively close to the lower end of the third guide column.

[0016] Preferably, the output end of the second telescopic rod is connected to the top plate by a movable structure, the movable structure includes a movable frame, the output end of the second telescopic rod is fixedly connected to the upper end of the movable frame, the movable frame includes a central axis and second limit blocks located at both ends of the central axis, the central axis is slidably connected to the middle part of the top plate up and down, two shock-absorbing pads are sleeved on the central axis, and the two shock-absorbing pads are respectively located on the upper and lower sides of the top plate.

[0017] Preferably, the movable plate is controlled to move by a reciprocating mechanism, and the reciprocating mechanism includes a reciprocating screw rotatably mounted on a machine base, the reciprocating screw is controlled to rotate by a motor, a nut block is connected to the reciprocating screw via a reciprocating thread, and the nut block is fixedly connected to the upper end of the movable plate.

[0018] Preferably, grooves are provided on both sides of the moving block, and first magnets are provided inside the grooves, and second magnets matching the first magnets are provided inside the first limiting frames.

[0019] A tungsten steel powder pressing process comprises the following steps:

[0020] S1. Loading, the mobile chassis is located on the feeding station, the carrier plate is placed at the bottom of the feeding frame, and the mixture of tungsten steel powder is evenly poured at the bottom of the feeding frame;

[0021] S2, vibrating the material, starting two hammers to knock the top plate to make it vibrate, and transmitting the vibration to the bearing plate through the four third guide pillars and the top block, so as to compact the tungsten steel powder mixture inside the feeding frame, so that the density of the tungsten steel powder mixture is in a relatively uniform state;

[0022] S3, scraping, the mobile chassis moves to the scraping station, and the scraping mechanism is started to scrape the upper end of the tungsten steel powder mixture inside the feeding frame to make the upper end of the tungsten steel powder mixture in a flat state;

[0023] S4, pressing, the mobile chassis moves to the pressing station, starts the pressing mechanism to press the tungsten steel powder mixture after scraping, and maintains the pressing action to maintain pressure and exhaust. The holding time varies according to the product size;

[0024] S5, demoulding. After the pressing is completed, the mobile chassis moves to the feeding station, and the lifting mechanism is started to lift the carrier plate from the inside of the feeding frame. The formed tungsten steel plate is located at the upper end of the carrier plate and is lifted together to achieve demoulding;

[0025] S6. Quality inspection: take away the bearing plate and the formed tungsten steel plate together, and check whether there are any defects on the appearance of the tungsten steel plate.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention can scrape and level the tungsten steel powder mixture by driving the scraper plate to reciprocate on the upper surface of the tungsten steel powder mixture through the scraping mechanism, and can also push and level the accumulated materials accumulated at both ends of the feeding frame in the opposite direction, thereby ensuring the flatness of the upper surface of the tungsten steel powder mixture;

[0028] After adding the tungsten steel powder mixture into the feeding frame, the tungsten steel powder mixture is vibrated by a hammer, which can make the density distribution of the tungsten steel powder mixture in the feeding frame more uniform, thereby improving the quality of the pressing molding;

[0029] The tungsten steel plate after being pressed and formed can be demoulded through the lifting mechanism. The lifting mechanism lifts up the carrying plate, and the tungsten steel plate after being pressed and formed inside the feeding frame also rises with the carrying plate. When the carrying plate and the tungsten steel plate are separated from the feeding frame, the carrying plate and the tungsten steel plate can be taken away together. The support of the bottom of the tungsten steel plate by the carrying plate will prevent the tungsten steel plate from being deformed or broken due to uneven force during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of the mobile chassis of the present invention being located at a feeding station;

[0031] Figure 2 It is a front view of the movable chassis of the present invention located at the scraping station;

[0032] Figure 3 It is a front view of the mobile chassis of the present invention located at the feeding station;

[0033] Figure 4 It is a partial structural schematic diagram of the present invention;

[0034] Figure 5 It is a schematic diagram of the lifting mechanism of the present invention;

[0035] Figure 6 It is an exploded view of the jacking mechanism of the present invention;

[0036] Figure 7 It is a schematic diagram of the scraping mechanism of the present invention;

[0037] Figure 8 It is a schematic diagram of the inner raceway structure of the roller of the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of the roller of the present invention after switching from the inner track to the outer track.

[0039] In the figure: 1, machine base; 11, support frame; 12, feeding station; 13, scraping station; 14, pressing station; 2, movable bottom frame; 21, outer edge plate; 22, inner raceway; 23, outer raceway; 24, inner triangular block; 25, outer triangular block; 26, guide plate; 27, inclined plane; 3, feeding frame; 4, bearing plate; 5, lifting mechanism; 51, top plate; 52, second telescopic rod; 53, third guide column; 54, top block; 55, movable structure; 551, movable frame; 552, middle axis; 553, second limit block; 554, shock pad; 6, scraping mechanism; 61, movable plate ;62. Lifting plate;63. Scraper frame;64. First telescopic rod;65. First guide column;66. First limit block;67. Spring;68. First limit frame;69. Second guide column;610. Moving block;611. Fixed shaft;612. Roller;613. Guide column;614. Scraper;615. Reciprocating mechanism;6151. Reciprocating screw rod;6152. Motor;6153. Nut block;616. First magnet;617. Second magnet;7. Pressing mechanism;71. Press;72. Pressing plate;8. Photoelectric sensor;9. Induction block;10. Hammer. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-9 The present invention provides a technical solution: a tungsten steel powder pressing and molding equipment, comprising a machine base 1, a support frame 11 is provided on the machine base 1, and the support frame 11 extends outward to the outside of the machine base 1, a movable base frame 2 is slidably provided on the upper end of the support frame 11, a feeding frame 3 is fixedly provided on the upper end of the movable base frame 2, and the feeding frame 3 has an opening structure up and down, and a bearing plate 4 is movably provided inside the feeding frame 3, a feeding station 12, a scraping station 13 and a pressing station 14 are respectively provided on the upper end of the support frame 11, three photoelectric sensors 8 corresponding to the feeding station 12, the scraping station 13 and the pressing station 14 are respectively provided on one side of the support frame 11, and a sensing block 9 corresponding to the photoelectric sensor 8 is provided on one side of the movable base frame 2, and when the sensing block 9 moves to the position of the photoelectric sensor 8, the movable base frame 2 stops moving and performs corresponding mechanism actions.

[0042] Among them, the initial position of the movable chassis 2 is located on the feeding station 12, the size of the inner side of the feeding frame 3 is the size that the tungsten steel plate needs to be pressed and formed, and the supporting plate 4 can move up and down inside the feeding frame 3. Therefore, after the tungsten steel powder is pressed and formed, the supporting plate 4 can be taken out together with the tungsten steel plate. Before feeding into the feeding frame 3, the supporting plate 4 needs to be placed in the bottom of the feeding frame 3 in advance, and then the mixture of tungsten steel powder is added to the feeding frame 3. The movable chassis 2 can translate at the upper end of the support frame 11 through a driving device (which is an existing mature technology, and the specific structure is not drawn in the figure). When the mixture of tungsten steel powder needs to be scraped, the movable chassis 2 is driven by the driving device to move to the scraping station 13. At this time, the sensing block 9 on one side of the movable chassis 2 corresponds to the photoelectric sensor 8 on the scraping station 13, and the movable chassis 2 stops at the scraping station 13.

[0043] A scraper mechanism 6 is provided above the scraper station 13, and the scraper mechanism 6 includes a moving plate 61, a lifting plate 62 and a scraper frame 63. A first telescopic rod 64 is fixedly installed on the front of the moving plate 61, and the output direction of the first telescopic rod 64 is downward, and the output end of the first telescopic rod 64 is fixedly connected to the lifting plate 62. Two groups of first guide pillars 65 are provided on the upper end of the scraper frame 63. The first guide pillars 65 are connected to the lifting plate 62 for up and down sliding. A first limit block 66 is provided on the upper end of the first guide pillar 65, and the lower end of the first limit block 66 abuts against the upper end of the lifting plate 62. A spring 67 is sleeved on the outer diameter of the first guide pillar 65, and the spring 67 is located between the scraper frame 63 and the lifting plate 62. A scraper 614 for leveling tungsten steel powder is fixedly installed on the front of the scraper frame 63;

[0044] The scraper mechanism 6 also includes a first limiting frame 68 located at both ends of the scraper frame 63, a second guide column 69 is provided on the inner side of the first limiting frame 68, a moving block 610 is slidably installed on the second guide column 69, grooves are provided on both sides of the moving block 610, and a first magnet 616 is provided inside the groove, and a second magnet 617 matching the first magnet 616 is provided on the inner side of the first limiting frame 68, a fixed shaft 611 is provided on one side of the moving block 610, the fixed shaft 611 passes through one side of the first limiting frame 68 and is movably connected to the first limiting frame 68, and a roller 612 is rotatably installed on the outer end of the fixed shaft 611, and the roller 612 is located at the first Outside the limit frame 68, outer edge plates 21 are provided on both sides of the movable base frame 2, inner raceways 22 and outer raceways 23 are provided on the upper ends of the outer edge plates 21, a group of inner triangular blocks 24 are provided on the upper ends of the inner raceways 22, and a group of outer triangular blocks 25 are provided on the upper ends of the outer raceways 23. The tops of the inner triangular blocks 24 and the outer triangular blocks 25 are both provided with rounded corners. The inner triangular blocks 24 and the outer triangular blocks 25 are respectively close to the two ends of the movable base frame 2, and two groups of guide plates 26 corresponding to the inner triangular blocks 24 and the outer triangular blocks 25 are provided at the two ends of the movable base frame 2. A guide column 613 is provided on the upper end of the movable block 610, and an inclined surface 27 matching the guide column 613 is provided on the guide plate 26;

[0045] The movable plate 61 is controlled to move by a reciprocating mechanism 615, which includes a reciprocating screw 6151 rotatably mounted on the machine base 1. The reciprocating screw 6151 is controlled to rotate by a motor 6152. A nut block 6153 is connected to the reciprocating screw 6151 via a reciprocating thread. The nut block 6153 is fixedly connected to the upper end of the movable plate 61.

[0046] Among them, the initial position of the scraper mechanism 6 is located in the middle of the reciprocating screw rod 6151. When the movable chassis 2 moves to the scraper station 13, the first telescopic rod 64 drives the lifting plate 62 to descend, so that the scraper frame 63 and the scraper 614 installed on the front of the scraper frame 63 descend, so that the scraper 614 enters the feeding frame 3, and the lower end of the scraper 614 contacts the tungsten steel powder mixture. At this time, the motor 6152 of the reciprocating mechanism 615 is started, and the motor 6152 drives the reciprocating screw rod 6151 to rotate, so that the nut block 6153 reciprocates on the reciprocating screw rod 6151, and the movable plate 61 fixedly connected to the nut block 6153 reciprocates, and finally the scraper 614 performs a reciprocating scraping action on the tungsten steel powder mixture. The depth of the scraper 614 entering the feeding frame 3 can be adjusted according to the thickness of the tungsten steel plate.

[0047] During the translation of the scraper 614, the scraper 614 will push the excess material to move to the two ends of the feeding frame 3. If the scraper 614 is always translated in the feeding frame 3, the excess material will continue to accumulate at the two ends of the feeding frame 3, thereby aggravating the unevenness of the upper surface of the tungsten steel powder mixture. Therefore, the problem is solved by the following structure, which can reversely scrape and level the materials accumulated at the two ends of the feeding frame 3. When the reciprocating mechanism 615 drives the scraper 614 to translate, the rollers 612 at the two ends of the scraper frame 63 also roll on the outer edge plates 21 on both sides of the moving base frame 2 at the same time. When the rollers 612 roll on the inner raceway 22 to the bottom of the inner triangular block 24, the guide column 613 also abuts against and is tangent to the inclined surface 27 on the guide plate 26 at the same time. At this time, the scraper 614 is close to the feeding frame 3. At one end of the feeding frame 3, the protruding material on the upper surface of the tungsten steel powder mixture will be pushed to the inner end of the feeding frame 3 by the scraper 614. At this time, the roller 612 continues to roll, and the inner triangular block 24 will lift the roller 612 from the inner raceway 22, so that the scraper frame 63 rises, and the spring 67 is also compressed, so that the scraper 614 rises and separates from the accumulated tungsten steel powder mixture. When the roller 612 falls from the inner triangular block 24, the spring 67 rebounds to make the scraper frame 63 fall, so that the scraper 614 falls and abuts against the inner side of one end of the feeding frame 3. The moving trajectory of the scraper 614 at this time is a parabola shape. At the same time, the guide column 613 is guided by the inclined surface 27 so that the guide column 613 gradually moves toward the two ends of the scraper frame 63, so that the moving block 610 gradually moves to The two ends of the scraper frame 63 move, so that the roller 612 gradually moves toward the two ends of the scraper frame 63. When the roller 612 falls from the inner triangular block 24, the moving block 610 moves from one side of the first limit frame 68 to the other side, so that the roller 612 moves from the inner raceway 22 to the outer raceway 23. At this time, the scraper frame 63 is driven to return by the reciprocating mechanism 615. The roller 612 can roll on the outer raceway 23 without being interfered by the inner triangular block 24. The scraper 614 can also push the tungsten steel powder mixture accumulated at one end of the feeding frame 3 back to the middle of the feeding frame 3 for scraping. When the roller 612 rolls from the outer raceway 23 to the outer triangular block 25, similarly, the roller 612 will be lifted up by the outer triangular block 25 and then fall, passing through another group The guide of the guide plate 26 makes the moving block 610 move from both ends of the scraper frame 63 to the middle, so that the roller 612 moves from the outer raceway 23 to the inner raceway 22. At this time, the scraper 614 also moves to the inner side of the other end of the feeding frame 3 in a parabolic moving trajectory, and then the reciprocating mechanism 615 drives the scraper 614 to return to reversely push and flatten the tungsten steel powder mixture accumulated at the other end of the feeding frame 3. At this time, the roller 612 rolls on the inner raceway 22. The upper surface of the tungsten steel powder mixture can be scraped flat by reciprocating for several times. After the upper surface of the tungsten steel powder mixture is scraped flat, the scraper mechanism 6 stays in the middle of the reciprocating screw 6151, and the first telescopic rod 64 drives the lifting plate 62 and its assembly parts to rise, so that the scraper 614 leaves the feeding frame 3;

[0048] When the roller 612 rolls on the inner raceway 22, the first magnet 616 is magnetically attracted to the second magnet 617 on the side away from the roller 612. When the roller 612 rolls on the outer raceway 23, the first magnet 616 is magnetically attracted to the second magnet 617 on the side close to the roller 612. The magnetic attraction between the first magnet 616 and the second magnet 617 enables the roller 612 to roll stably on the inner raceway 22 or the outer raceway 23. When the raceway is replaced, the first magnet 616 and the second magnet 617 can be forcibly separated by the inclined surface 27 on the guide plate 26.

[0049] A pressing mechanism 7 is provided above the pressing station 14 . The pressing mechanism 7 includes a press 71 installed at the upper end of the machine base 1 . A pressing plate 72 matching the feeding frame 3 is provided at the output end of the press 71 .

[0050] Among them, the pressing mechanism 7 is used to press and shape the tungsten steel powder mixture inside the feeding frame 3. After the tungsten steel powder mixture is scraped flat at the scraping station 13, the movable chassis 2 moves from the scraping station 13 to the pressing station 14, and the photoelectric sensor 8 makes the movable chassis 2 stay on the pressing station 14. At this time, the press 71 is started, and the press 71 drives the pressing plate 72 to move slowly downward and press the steel powder mixture, and maintains the pressing action to maintain pressure and exhaust. The holding time varies according to the product size. After the pressing is completed, the press 71 drives the pressing plate 72 to rise, and the movable chassis 2 moves to the feeding station 12 at the initial position.

[0051] The supporting plate 4 is lifted and lowered by a lifting mechanism 5, which includes a top plate 51 located below the mobile base frame 2. The top plate 51 is lifted and lowered by a second telescopic rod 52, which is fixedly mounted at the lower end of the mobile base frame 2. Four third guide columns 53 are provided at the upper end of the top plate 51, which penetrate the mobile base frame 2 and are connected to the mobile base frame 2 for vertical sliding movement. A top block 54 is provided at the upper end of the third guide column 53, and the lower end of the top block 54 abuts against the inner bottom of the mobile base frame 2, and the upper end abuts against the lower end of the supporting plate 4.

[0052] Among them, the lifting mechanism 5 is used to demold the tungsten steel plate after being pressed and formed. After the movable base frame 2 moves to the feeding station 12 at the initial position, the second telescopic rod 52 of the lifting mechanism 5 is started to make the top plate 51 rise, and the top block 54 on the third guide column 53 is raised and lifts the supporting plate 4 through the four third guide columns 53, and the tungsten steel plate after being pressed and formed inside the feeding frame 3 also rises with the supporting plate 4. When the supporting plate 4 and the tungsten steel plate are separated from the feeding frame 3, the supporting plate 4 and the tungsten steel plate can be taken away together. Through the support of the bottom of the tungsten steel plate by the supporting plate 4, the tungsten steel plate will not be deformed or broken due to uneven force during the transfer process.

[0053] Two striking hammers 10 are provided at the lower end of the top plate 51, and the two striking hammers 10 are respectively close to the lower end of the third guide column 53;

[0054] The output end of the second telescopic rod 52 is connected to the top plate 51 by a movable structure 55, and the movable structure 55 includes a movable frame 551. The output end of the second telescopic rod 52 is fixedly connected to the upper end of the movable frame 551. The movable frame 551 includes a central axis 552 and second limit blocks 553 located at both ends of the central axis 552. The central axis 552 is slidably connected to the middle part of the top plate 51 up and down. Two shock-absorbing pads 554 are sleeved on the central axis 552, and the two shock-absorbing pads 554 are respectively located on the upper and lower sides of the top plate 51.

[0055] Among them, after adding the tungsten steel powder mixture into the feeding frame 3, the tungsten steel powder mixture is vibrated by the percussion hammer 10, which can make the density distribution of the tungsten steel powder mixture in the feeding frame 3 more uniform and improve the quality of pressing and molding. The percussion hammer 10 strikes the top plate 51, and the vibration generated by the top plate 51 is transmitted to the supporting plate 4 through the four third guide pillars 53, so as to vibrate the tungsten steel powder mixture. However, the tungsten steel powder mixture should not be vibrated excessively to prevent the tungsten steel powder mixture from being stratified, which will affect the product quality. In addition, the movable structure 55 can greatly reduce the vibration transmission to other assembly parts. When the top plate 51 vibrates, the upper and lower shock-absorbing pads 554 of the top plate 51 can basically block the influence of the vibration of the top plate 51 on the second telescopic rod 52.

[0056] The tungsten steel powder pressing process includes the following steps:

[0057] S1, loading, the mobile chassis 2 is located on the feeding station 12, the carrier plate 4 is placed at the bottom of the feeding frame 3, and the mixture of tungsten steel powder is evenly poured at the bottom of the feeding frame 3;

[0058] S2, vibrating the material, starting the two hammers 10 to knock the top plate 51 to make it vibrate, and transmitting the vibration to the carrier plate 4 through the four third guide pillars 53 and the top block 54, so as to compact the tungsten steel powder mixture inside the feeding frame 3, so that the density of the tungsten steel powder mixture is in a relatively uniform state;

[0059] S3, scraping, the mobile chassis 2 moves to the scraping station 13, and the scraping mechanism 6 is started to scrape the upper end of the tungsten steel powder mixture inside the feeding frame 3 to make the upper end of the tungsten steel powder mixture in a flat state;

[0060] S4, pressing, the mobile chassis 2 moves to the pressing station 14, starts the pressing mechanism 7 to press the tungsten steel powder mixture after scraping, and maintains the pressing action to maintain pressure and exhaust. The holding time varies according to the product size;

[0061] S5, demoulding. After the pressing is completed, the mobile chassis 2 is moved to the feeding station 12, and the lifting mechanism 5 is started to lift the carrier plate 4 from the inside of the feeding frame 3. The formed tungsten steel plate is located at the upper end of the carrier plate 4 and is lifted together, thereby realizing demoulding;

[0062] S6, quality inspection, take away the bearing plate 4 and the formed tungsten steel plate together, and check whether there are any defects on the appearance surface of the tungsten steel plate.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tungsten steel powder compacting device, comprising a machine base (1), characterized in that: A support frame (11) is provided on the machine base (1), and the support frame (11) extends outward to the outside of the machine base (1), and a feeding station (12), a scraping station (13) and a pressing station (14) are provided on the upper end of the support frame (11); A scraping mechanism (6) is provided above the scraping station (13), and a pressing mechanism (7) is provided above the pressing station (14); A movable bottom frame (2) is slidably provided on the upper end of the support frame (11), a charging frame (3) is fixedly provided on the upper end of the movable bottom frame (2), and the charging frame (3) is an open structure at the top and bottom, and a bearing plate (4) is movably provided inside the charging frame (3), and the bearing plate (4) is controlled to rise and fall by a lifting mechanism (5); One side of the support frame (11) is provided with three photoelectric sensors (8) corresponding to the feeding station (12), the scraping station (13) and the pressing station (14), respectively; one side of the movable base frame (2) is provided with a sensing block (9) corresponding to the photoelectric sensor (8); when the sensing block (9) moves to the position of the photoelectric sensor (8), the movable base frame (2) stops moving and performs corresponding mechanism actions; The scraper mechanism (6) comprises a movable plate (61), a lifting plate (62) and a scraper frame (63); a first telescopic rod (64) is fixedly mounted on the front of the movable plate (61), and the output direction of the first telescopic rod (64) is downward; the output end of the first telescopic rod (64) is fixedly connected to the lifting plate (62); two groups of first guide columns (65) are arranged on the upper end of the scraper frame (63); the first guide columns (65) are slidably connected to the lifting plate (62) up and down; a first limit block (66) is arranged on the upper end of the first guide column (65); the lower end of the first limit block (66) abuts against the upper end of the lifting plate (62); a spring (67) is sleeved on the outer diameter of the first guide column (65); the spring (67) is located between the scraper frame (63) and the lifting plate (62); a scraper (614) for scraping tungsten steel powder is fixedly mounted on the front of the scraper frame (63); The scraper mechanism (6) further comprises a first limiting frame (68) located at both ends of the scraper frame (63), a second guide column (69) is provided inside the first limiting frame (68), a moving block (610) is slidably mounted on the second guide column (69) left and right, a fixed shaft (611) is provided on one side of the moving block (610), the fixed shaft (611) passes through one side of the first limiting frame (68) and is movably connected to the first limiting frame (68), a roller (612) is rotatably mounted on the outer end of the fixed shaft (611), and the roller (612) is located outside the first limiting frame (68); The movable base frame (2) is provided with outer edge plates (21) on both sides, the upper end of the outer edge plates (21) is provided with an inner raceway (22) and an outer raceway (23), the upper end of the inner raceway (22) is provided with a group of inner triangular blocks (24), the upper end of the outer raceway (23) is provided with a group of outer triangular blocks (25), the tops of the inner triangular blocks (24) and the outer triangular blocks (25) are both provided with rounded corners, and the inner triangular blocks (24) and the outer triangular blocks (25) are respectively close to the two ends of the movable base frame (2); Two sets of guide plates (26) corresponding to the inner triangular block (24) and the outer triangular block (25) are provided at both ends of the movable base frame (2), a guide column (613) is provided at the upper end of the movable block (610), and an inclined surface (27) matching the guide column (613) is provided on the guide plate (26).

2. The tungsten steel powder compacting equipment according to claim 1, characterized in that: The pressing mechanism (7) comprises a press (71) mounted on the upper end of the machine base (1), and a pressing plate (72) matching the feeding frame (3) is provided at the output end of the press (71).

3. The tungsten steel powder compacting equipment according to claim 1, characterized in that: The lifting mechanism (5) comprises a top plate (51) located below the movable base frame (2); the top plate (51) is controlled to rise and fall by a second telescopic rod (52); the second telescopic rod (52) is fixedly mounted on the lower end of the movable base frame (2); four third guide columns (53) are provided at the upper end of the top plate (51); the third guide columns (53) penetrate the movable base frame (2) and are slidably connected to the movable base frame (2) in an upward and downward manner; a top block (54) is provided at the upper end of the third guide column (53); the lower end of the top block (54) abuts against the inner bottom of the movable base frame (2); and the upper end abuts against the lower end of the bearing plate (4).

4. The tungsten steel powder compacting equipment according to claim 3 is characterized in that: Two striking hammers (10) are provided at the lower end of the top plate (51), and the two striking hammers (10) are respectively close to the lower ends of the third guide pillars (53).

5. The tungsten steel powder compacting equipment according to claim 3 is characterized in that: The output end of the second telescopic rod (52) is connected to the top plate (51) via a movable structure (55), the movable structure (55) comprising a movable frame (551), the output end of the second telescopic rod (52) is fixedly connected to the upper end of the movable frame (551), the movable frame (551) comprising a central axis (552) and second limit blocks (553) located at both ends of the central axis (552), the central axis (552) is slidably connected to the middle of the top plate (51) up and down, and two shock-absorbing pads (554) are sleeved on the central axis (552), and the two shock-absorbing pads (554) are respectively located on the upper and lower sides of the top plate (51).

6. The tungsten steel powder compacting equipment according to claim 1, characterized in that: The movable plate (61) is controlled to move by a reciprocating mechanism (615), wherein the reciprocating mechanism (615) comprises a reciprocating screw (6151) rotatably mounted on a machine base (1), wherein the reciprocating screw (6151) is controlled to rotate by a motor (6152), wherein a nut block (6153) is connected to the reciprocating screw (6151) via a reciprocating thread, and wherein the nut block (6153) is fixedly connected to the upper end of the movable plate (61).

7. The tungsten steel powder compacting equipment according to claim 1, characterized in that: Grooves are provided on both sides of the moving block (610), and first magnets (616) are provided inside the grooves. Second magnets (617) matching the first magnets (616) are provided inside the first limiting frame (68).

8. A tungsten steel powder pressing process, used in conjunction with the tungsten steel powder pressing and molding equipment according to claim 4, characterized in that: The following steps are involved: S1, loading, the mobile base frame (2) is located on the feeding station (12), the carrier plate (4) is placed into the bottom of the feeding frame (3), and the mixture of tungsten steel powder is evenly poured on the bottom of the feeding frame (3); S2, vibrating the material, starting two percussion hammers (10) to percuss the top plate (51) to generate vibration, and transmitting the vibration to the support plate (4) through the four third guide pillars (53) and the top block (54), thereby vibrating the tungsten steel powder mixture inside the feeding frame (3) to make the density of the tungsten steel powder mixture in a relatively uniform state; S3, scraping, the mobile chassis (2) moves to the scraping station (13), and the scraping mechanism (6) is started to scrape the upper end of the tungsten steel powder mixture inside the feeding frame (3) so that the upper end of the tungsten steel powder mixture is in a flat state; S4, pressing, the mobile chassis (2) moves to the pressing station (14), starts the pressing mechanism (7) to press the tungsten steel powder mixture after scraping, and maintains the pressing action to maintain pressure and exhaust. The pressure holding time varies according to the product size; S5, demoulding. After the pressing is completed, the movable base frame (2) is moved to the feeding station (12), and the lifting mechanism (5) is started to lift the carrier plate (4) from the inside of the feeding frame (3). The formed tungsten steel plate is located at the upper end of the carrier plate (4) and is lifted together, thereby achieving demoulding; S6, quality inspection, take away the carrier plate (4) and the formed tungsten steel plate together, and inspect the appearance of the tungsten steel plate for defects.

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