A tungsten steel powder pressing and forming device

Abstract

The present invention relates to the technical field of metal powder pressing and forming, and particularly relates to a tungsten steel powder pressing and forming device. It includes: a chassis, a fixed box is arranged on the chassis, a support frame is fixedly connected to a side of the fixed box away from the chassis, an extrusion part is arranged on a side of the support frame away from the fixed box, and two first shielding parts and second shielding parts which are symmetrically distributed are arranged on the fixed box; a support member is fixedly connected to the chassis, a first electric member is fixedly connected to the support member, and an L-shaped frame is arranged on the first electric member. The present invention proposes a new filling method: drawing on the layer-by-layer construction technology of 3D printing, the tungsten steel powder is laid in layers in the mold, in this way, the tungsten steel powder is evenly distributed during the filling process, and by this means, the density difference of the finished product is reduced, thereby improving the quality and performance of the product. During the filling process of the tungsten steel powder, the filling is completed in a sealed manner to prevent the tungsten steel powder from being accidentally inhaled.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder pressing and forming, and particularly relates to a tungsten steel powder pressing and forming device. Background Art

[0002] Tungsten steel powder is a basic material for manufacturing tungsten steel parts, and a tungsten steel powder pressing device is a mechanical device specifically used to form tungsten steel powder into a specific shape and size through a pressing process. Such a device usually includes components such as a mold and a pressing mechanism, and its working principle is as follows:

[0003] 1. Filling stage: First, place the tungsten steel powder in the mold;

[0004] 2. Levelling treatment: Perform levelling treatment on the tungsten steel powder to ensure its as uniform distribution as possible in the mold;

[0005] 3. Extrusion stage: The pressing mechanism performs extrusion treatment on the tungsten steel powder. Under the action of high pressure, the tungsten steel powder is extruded into a dense blank, and this process is usually called cold pressing or dry pressing.

[0006] In the process of filling tungsten steel powder into the mold, the currently adopted method is to directly pour the powder into the mold at one time. This method easily leads to uneven distribution of the powder in the mold, resulting in local densification and local looseness. When pressing under such circumstances, there will be differences in the density of each part of the finished product, thus affecting the quality and performance of the product. Summary of the Invention

[0007] The present invention adopts the following technical solutions to solve the above-mentioned technical problems. The present invention provides a tungsten steel powder pressing and forming device, which includes:

[0008] A chassis, on which a fixed box is provided. One side of the fixed box away from the chassis is fixedly connected with a support frame. One side of the support frame away from the fixed box is provided with an extrusion part. Two first shielding parts and second shielding parts symmetrically distributed are provided on the fixed box;

[0009] A support member, fixedly connected to the chassis. The support member is fixedly connected with a first electric member. The first electric member is provided with an L-shaped frame. One side of the L-shaped frame away from the first electric member is fixedly connected with a sealing cover. Two symmetrically distributed first shielding parts and two symmetrically distributed second shielding parts are all in sealing cooperation with the sealing cover;

[0010] A feeding part, arranged in the sealing cover, and the feeding part is used to provide tungsten steel powder into two symmetrically distributed first shielding parts and the second shielding part.

[0011] Further, the feeding part includes: a fixed shell fixedly connected inside the partition cover, and a feeding pipe fixedly connected to and communicating with the fixed shell and penetrating through the partition cover and the L-shaped frame;

[0012] A second electric component fixedly connected inside the partition cover, the second electric component is provided with a first driving component, a guide material shell is fixedly connected to the telescopic end of the first driving component, and a corrugated pipe is fixedly connected and communicated between the guide material shell and the fixed shell.

[0013] Further, the feeding part further includes:

[0014] Rotating shells symmetrically distributed, all rotatably connected to the side of the guide material shell facing away from the fixed shell, the symmetrically distributed rotating shells are all in communication and cooperation with the guide material shell, symmetrically distributed gears are fixedly connected to the rotating shells, a rack is slidably connected to the side of the guide material shell away from the fixed shell, the gears on the symmetrically distributed rotating shells are all meshed with the rack, and the rack is in extrusion cooperation with the first shielding part;

[0015] A first compaction assembly is arranged inside the fixed shell, and the first compaction assembly is used to increase the compactness of the tungsten carbide powder during the placement process.

[0016] Further, symmetrically distributed sliding parts are slidably connected to the side of the guide material shell away from the fixed shell, symmetrically distributed extrusion blocks are fixedly connected to the rack, and the extrusion blocks are in extrusion cooperation with the adjacent sliding parts.

[0017] Further, the distance between the lower side of the middle part of the sliding part and the inner bottom of the guide material shell is a, the length of the extrusion block is b, and the values of a and b are the same.

[0018] Further, a magnetic attraction part is fixedly connected to the side of the sliding part facing the fixed shell, and the magnetic attraction part is in magnetic attraction cooperation with the guide material shell.

[0019] Further, the first compaction assembly includes:

[0020] Symmetrically distributed elastic parts, all fixedly connected inside the fixed shell, U-shaped frames are fixedly connected to the opposite sides of the symmetrically distributed elastic parts, symmetrically distributed fixing blocks are fixedly connected to the opposite sides of the symmetrically distributed U-shaped frames, a protective cover is arranged inside the fixed shell, and the protective cover is fixedly connected to all the fixing blocks;

[0021] A first vibrating part is arranged inside the protective cover, and the first vibrating part is used to assist in feeding.

[0022] Further, it further includes a second compaction assembly arranged in the fixed box, the second compaction assembly is used to increase the compactness of the tungsten carbide powder at the positioning holes, and the second compaction assembly includes:

[0023] The second driving member is fixedly connected inside the fixed box, and a connecting member is fixedly connected to the telescopic end of the second driving member;

[0024] The sliding plate is arranged on the connecting member. The sliding plate is provided with a second vibrating member, and a plurality of connecting pipes are arranged on the sliding plate;

[0025] The support rod is fixedly connected to the side of the connecting pipe away from the sliding plate. The fixed box is fixedly connected with a bottom plate. The bottom plate, two symmetrically distributed first shielding members and the second shielding member form a fixed mold. The bottom plate is provided with limiting holes with the same number as the support rods. The limiting holes on the bottom plate are slidably matched with the adjacent support rods and the adjacent connecting pipes.

[0026] Further, the connecting member is fixedly connected with a fixing ring, the fixing ring is fixedly connected with the sliding plate, and two symmetrically distributed springs are arranged between the connecting member and the sliding plate. The two symmetrically distributed springs are both sleeved on the fixing ring.

[0027] Further, the support rod is composed of two rods with different diameters. The diameter of the small-diameter rod on the support rod is smaller than the diameter of the adjacent limiting hole on the bottom plate, and the upper end of the support rod is provided with a tip.

[0028] The beneficial effects of the present invention are as follows: In order to solve the problem of uneven density of finished products caused by the existing tungsten steel powder filling method, the present invention proposes a new filling method: referring to the layer-by-layer construction technology of 3D printing, the tungsten steel powder is laid in layers in the mold. In this way, the tungsten steel powder is evenly distributed during the filling process. By this means, the density difference of the finished product is reduced, thereby improving the quality and performance of the product. During the filling process of the tungsten steel powder, the filling is completed in a sealed manner to prevent the tungsten steel powder from being accidentally inhaled and to avoid external impurities from entering the filling area, thereby ensuring the purity of the powder and guaranteeing the quality of the finished product. At the same time, the filling direction is opposite to the moving direction of the material guiding shell, reducing the impact force of the tungsten steel powder, and further reducing the splashing of the tungsten steel powder during the laying process, so that it can be stably laid in the mold.

[0029] In order to solve the problem of low compactness of tungsten steel powder around the positioning holes, the present invention adopts a vibration treatment method to increase the powder compactness in the positioning hole area. Through vibration, the powder around the positioning holes can be better filled and compacted, thereby increasing the density of this area. In addition, during the vibration process, measures are taken to ensure that it will not cause any interference or influence on the normal operation of surrounding parts. Description of the Drawings

[0030] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2Another perspective schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 3 Cross-sectional view of the three-dimensional structure of the extrusion part of the present invention;

[0033] Figure 4 Cross-sectional view of the three-dimensional structure of the sealing cover of the present invention;

[0034] Figure 5 Cross-sectional view of the three-dimensional structure of the fixed shell of the present invention;

[0035] Figure 6 Cross-sectional view of the three-dimensional structure of the protective cover of the present invention;

[0036] Figure 7 Schematic diagram of the three-dimensional structure of the material guiding shell of the present invention;

[0037] Figure 8 Cross-sectional view of the three-dimensional structure of the material guiding shell of the present invention;

[0038] Figure 9 Cross-sectional view of the three-dimensional structure of the rotating shell of the present invention;

[0039] Figure 10 Schematic diagram of the three-dimensional structure of the sliding part and the extrusion block of the present invention;

[0040] Figure 11 Cross-sectional view of the three-dimensional structure of the fixed box of the present invention;

[0041] Figure 12 Cross-sectional view of the three-dimensional structure of the sliding plate of the present invention.

[0042] The markings in the figure are: 10 - chassis, 11 - fixed box, 12 - support frame, 13 - extrusion part, 14 - first shielding part, 15 - second shielding part, 16 - support part, 17 - first electric part, 18 - L-shaped frame, 19 - sealing cover, 20 - fixed shell, 21 - feeding pipe, 22 - second electric part, 23 - first driving part, 24 - material guiding shell, 30 - rotating shell, 31 - gear, 32 - rack, 40 - sliding part, 41 - extrusion block, 50 - magnetic attracting part, 60 - elastic part, 61 - U-shaped frame, 62 - fixed block, 63 - protective cover, 64 - first vibrating part, 70 - second driving part, 71 - connecting part, 72 - fixed ring, 73 - sliding plate, 74 - second vibrating part, 75 - connecting pipe, 76 - support rod, 77 - bottom plate. Detailed implementation manners

[0043] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not limited to the present invention.

[0044] To solve the problem that the existing tungsten steel powder filling method can cause density differences in the finished product, the present invention proposes a new tungsten steel powder filling method: by simulating the process of layer-by-layer printing of workpieces by a 3D printer, and then filling the tungsten steel powder into the mold in a layer-by-layer laying manner, so that the tungsten steel powder can be more evenly distributed during the filling process, thereby reducing the density difference of the finished product and improving the quality and performance of the product.

[0045] Embodiment 1: A tungsten steel powder pressing and forming device, as Figures 1-5 shown, includes: a chassis 10, the chassis 10 is provided with a fixed box 11, one side of the fixed box 11 away from the chassis 10 is fixedly connected with a support frame 12, one side of the support frame 12 away from the fixed box 11 is provided with an extrusion part 13, and the fixed box 11 is provided with two symmetrically distributed first shielding parts 14 and a second shielding part 15; a support member 16, fixedly connected to the chassis 10, the support member 16 is fixedly connected with a first electric member 17, the first electric member 17 is provided with an L-shaped frame 18, one side of the L-shaped frame 18 away from the first electric member 17 is fixedly connected with a sealing cover 19, and the two symmetrically distributed first shielding parts 14 and the two symmetrically distributed second shielding parts 15 are all in sealing cooperation with the sealing cover 19; a feeding part, arranged in the sealing cover 19, and the feeding part is used to provide tungsten steel powder into the two symmetrically distributed first shielding parts 14 and the second shielding part 15.

[0046] In the above solution, a control panel is provided on the right side of the chassis 10. The fixed box 11 is a carrier box in existing equipment, and the material of the fixed box 11 is high-strength steel alloy. The fixed box 11 can bear and support the extrusion force exerted by the extrusion part 13 on the tungsten steel powder. The extrusion part 13 is located above the support frame 12. The support frame 12 is made of high-strength steel alloy. The extrusion part 13 is composed of four hydraulic push rods, a sliding seat, a hydraulic press, and a pressure block. The telescopic ends of the four hydraulic push rods are fixedly connected to the upper side of the support frame 12. The sliding seat is fixedly connected to the fixed parts of the four hydraulic push rods (the sliding seat is made of high-strength steel alloy). The hydraulic press is fixedly connected to the middle of the sliding seat. The pressure block is fixedly connected to the telescopic end of the hydraulic press. The pressure block is used to extrude the tungsten steel powder into the thickness and density required for work. In practical applications, two first shielding parts 14 and a second shielding part 15 can be detachably installed on the upper side of the fixed box 11. The two first shielding parts 14 are located at the left and right parts on the upper side of the fixed box 11. The two second shielding parts 15 are located at the front and rear parts on the upper side of the fixed box 11. The support part 16 is located at the rear side of the chassis 10. In practical applications, the support part 16 can be replaced by a lift, which is used to prevent the sealing cover 19 from rubbing against the upper sides of the two first shielding parts 14 and the second shielding part 15 during the forward movement. The first electric part 17 is bolted to the upper side of the support part 16. The first electric part 17 is an electric slide rail, and an electric slider is slidably connected in the first electric part 17. The first electric part 17 is electrically connected to the control terminal panel. The L-shaped frame 18 is fixedly connected to the electric slider of the first electric part 17. The sealing cover 19 is located in front of the L-shaped frame 18. An air outlet is provided on the sealing cover 19. The upper sides of the two first shielding parts 14 and the second shielding part 15 are covered by the sealing cover 19, so that the tungsten steel powder inside the five parts remains stable during the filling process by the feeding part, and it is avoided that the tungsten steel powder leaks out from the two first shielding parts 14 and the second shielding part 15, resulting in external impurities entering the filling area, thereby destroying the purity of the tungsten steel powder and affecting the quality of the finished product.

[0047] As Figures 4-9 shown, the feeding part includes: a fixed shell 20, fixedly connected inside the sealing cover 19. The fixed shell 20 is fixedly connected and communicated with a feeding pipe 21 that penetrates the sealing cover 19 and the L-shaped frame 18; a second electric part 22, fixedly connected inside the sealing cover 19. The second electric part 22 is provided with a first driving part 23. The telescopic end of the first driving part 23 is fixedly connected with a guide material shell 24. A corrugated pipe is fixedly connected and communicated between the guide material shell 24 and the fixed shell 20.

[0048] In the above solution, the fixed shell 20 is bolted to the inside of the sealing cover 19 through two fixing brackets distributed left and right. The feeding pipe 21 can also bypass the L-shaped frame 18, but in the present invention, it penetrates through. The rear side of the feeding pipe 21 passes through the air outlet on the sealing cover 19, and the diameter of the air outlet on the sealing cover 19 is larger than the diameter of the feeding pipe 21. When tungsten carbide powder is filled between the sealing cover 19 and the two first shielding members 14 and the second shielding member 15, the gas inside the five can be discharged from the air outlet on the sealing cover 19, thereby reducing the pressure between the two first shielding members 14 and the second shielding member 15. An inclined surface is provided on the lower side of the inner bottom of the fixed shell 20 for guiding the tungsten carbide powder in the fixed shell 20. The second electric component 22 is an electric slide rail, the second electric component 22 is electrically connected to the control panel, an electric slider is slidably connected inside the second electric component 22, and the electric slider is fixedly connected to the fixed part of the first driving component 23. The first driving component 23 is an electric push rod, and the first driving component 23 is electrically connected to the control panel. The material guiding shell 24 is composed of a square shell and a guiding shell with a trapezoidal cross-section on the left side (also trapezoidal when viewed from the right side), and the two are fixedly connected to each other. The square shell is fixedly connected and communicated with the lower side of the guiding shell. The corrugated pipe fixedly connected and communicated between the guiding shell on the material guiding shell 24 and the lower side of the fixed shell 20 is a metal corrugated pipe, which is used to always maintain the supply of tungsten carbide powder during the movement of the material guiding shell 24.

[0049] As Figures 6-10 shown, the symmetrically distributed rotating shells 30 are all rotatably connected to the side of the material guiding shell 24 facing away from the fixed shell 20. The symmetrically distributed rotating shells 30 are all in communication and cooperation with the material guiding shell 24. The symmetrically distributed rotating shells 30 are all fixedly connected with gears 31. A rack 32 is slidably connected to the side of the material guiding shell 24 away from the fixed shell 20. The gears 31 on the symmetrically distributed rotating shells 30 are all meshed with the rack 32, and the rack 32 is in extrusion cooperation with the first shielding member 14; a first vibrating component is arranged inside the fixed shell 20, and the first vibrating component is used to increase the compactness of the tungsten carbide powder during placement. Symmetrically distributed sliding members 40 are slidably connected to the side of the material guiding shell 24 away from the fixed shell 20. The rack 32 is fixedly connected with symmetrically distributed extrusion blocks 41, and the extrusion blocks 41 are in extrusion cooperation with the adjacent sliding members 40. The distance between the lower side of the middle part of the sliding member 40 and the inner bottom of the material guiding shell 24 is a, and the length of the extrusion block 41 is b. The values of a and b are the same. A magnetic attracting member 50 is fixedly connected to the side of the sliding member 40 facing the fixed shell 20, and the magnetic attracting member 50 is in magnetic attraction cooperation with the material guiding shell 24.

[0050] In the above solution, the rotating shells 30 are symmetrically distributed left and right and there are two of them. Both of the two rotating shells 30 are rotationally connected to the lower side of the fixed shell 20 in a limited way. When the material guiding shell 24 moves to the left, the rotating shell 30 on the right communicates with the material guiding shell 24, realizing the laying of the tungsten carbide powder in the material guiding shell 24 to the right. Conversely, when the material guiding shell 24 moves to the right, the rotating shell 30 on the left communicates with the material guiding shell 24, realizing the laying of the tungsten carbide powder in the material guiding shell 24 to the left. Through the two methods listed above, the filling direction of the tungsten carbide powder is opposite to the moving direction of the material guiding shell 24, reducing the impact force of the tungsten carbide powder, and thus reducing the splashing of the tungsten carbide powder during the laying process, enabling the tungsten carbide powder to be stably laid on the upper side of the fixed box 11. There are two gears 31 in the front side in the present invention. In fact, they can be installed on the front and rear sides of the two rotating shells 30 as well, which is used to ensure the stability during the rotation of the rotating shell 30. Only one gear 31 on the front side is taken as an example in the present invention. The relevant parts of the rear side gear 31 are mirror-distributed with the above, which is used to maintain stability. The sliding member 40 is composed of two L-shaped plates with opposite flipping angles. The sliding member 40 is used to ensure the flatness of the upper layer of the tungsten carbide powder. Taking the pressing block 41 on the left as an example, an inclined surface is arranged on the left side of the pressing block 41. Taking the sliding member 40 on the right as an example, an inclined surface is arranged on the upper side of the sliding member 40, and the inclined surface faces the left. The inclined surface on the pressing block 41 is in extrusion fit with the inclined surface on the adjacent sliding member 40. The length of the pressing block 41 is the same as the distance from the lower part of the adjacent sliding member 40 to the inner bottom of the material guiding shell 24, which is used to make the pressing block 41 extrude the adjacent sliding member 40 to fit with the material guiding shell 24, and then the upper side of the sliding member 40 can fit with the lower side of the adjacent pressing block 41, so as to keep the extruded sliding member 40 stable. The magnetic attracting member 50 is a magnet, and the material guiding shell 24 is made of metal material.

[0051] As Figure 5 and Figure 6 shown, the first compaction assembly includes: symmetrically distributed elastic members 60, which are both fixedly connected inside the fixed shell 20. U-shaped frames 61 are fixedly connected to the facing sides of the symmetrically distributed elastic members 60. Symmetrically distributed fixing blocks 62 are fixedly connected to the facing sides of the symmetrically distributed U-shaped frames 61. A protective cover 63 is arranged inside the fixed shell 20, and the protective cover 63 is fixedly connected to all the fixing blocks 62; a first vibrating member 64, which is arranged inside the protective cover 63, and the first vibrating member 64 is used to assist in discharging materials.

[0052] In the above solution, the elastic members 60 are two groups of symmetrically distributed springs, and each group of springs is composed of a spring and a tension spring. The fixing blocks 62 are made of soft materials, which are used to reduce the influence on adjacent parts when the protective cover 63 vibrates. The first vibrating member 64 is composed of a vibrating motor and an eccentric block. The eccentric block is fixedly connected to the power output end of the vibrating motor. Two first vibrating members 64 are taken as an example in the present invention, but the rotating directions of the eccentric blocks in the two first vibrating members 64 are opposite, which is used to stabilize the vibration frequency of the protective cover 63.

[0053] The working process of the present invention is as follows: Before pressing the tungsten steel powder, first connect the discharge port of the external feeding device to the rear side of the feeding pipe 21 to complete the preparation work before pressing the tungsten steel powder.

[0054] When it is necessary to press the tungsten steel powder, the electric slider in the first electric component 17 drives the L-shaped frame 18, the sealing cover 19 and its attached parts to move forward, so that the lower side of the sealing cover 19 can fit with the upper sides of the two first shielding parts 14 and the second shielding part 15, preventing external impurities from entering the above-mentioned parts, ensuring the purity of the tungsten steel powder, thus guaranteeing the quality of the finished product, and also avoiding the staff from accidentally inhaling the tungsten steel powder, which may affect the health of the staff (such as respiratory tract injury, pneumoconiosis, etc.).

[0055] After the lower side of the sealing cover 19 fits with the upper sides of the two first shielding parts 14 and the second shielding part 15, the L-shaped frame 18, the sealing cover 19 and its attached parts stop moving. Subsequently, the first driving component 23 pushes the material guiding shell 24 downward until the distance between the material guiding shell 24 and the fixed box 11 meets the height required for work. Then, through the external feeding device 60, the tungsten steel powder is fed into the fixed shell 20 through the feeding pipe 21. At this time, the first vibrating component 64 drives the protective cover 63 to vibrate, vibrating the tungsten steel powder in the fixed shell 20. While assisting in feeding, the compactness of the tungsten steel powder is increased. Through the suspension of the fixed shell 20 by the elastic component and the vibration isolation of the fixed block 62, the vibration sensation transmitted to adjacent parts during the vibration of the first vibrating component 64 is reduced.

[0056] The fixed shell 20 and the corrugated pipe guide the tungsten steel powder into the material guiding shell 24, and it is discharged from the lower side of the material guiding shell 24 into the rotating shell 30 on the left and discharged from the rotating shell 30 on the left. Taking the example of discharging from left to right ( Figure 10 as shown), during this process, the electric slider on the second electric component 22 drives the first driving component 23, the material guiding shell 24 and its attached parts to move to the right, and the adjacent corrugated pipe deforms during the movement of the material guiding shell 24.

[0057] During the process of the material guiding shell 24 moving to the right, the tungsten steel powder in the material guiding shell 24 passes through the rotating shell 30 on the left and is discharged above the fixed box 11, realizing the laying of the tungsten steel powder, and making the tungsten steel powder spread on the upper side of the fixed box 11 in a way of spraying layer by layer. In this way, the tungsten steel powder exists in a uniformly distributed state within the two first shielding members 14 and the second shielding member 15. During the process of the left rotating shell 30 discharging the tungsten steel powder, the discharging direction of the tungsten steel powder is opposite to the advancing direction of the material guiding shell 24, so that the tungsten steel powder can be laid on the fixed box 11 more stably, preventing the tungsten steel powder from accumulating, reducing the impact force of the tungsten steel powder, and further reducing the splashing of the tungsten steel powder during the laying process (if the tungsten steel powder is laid in a way consistent with the advancing direction of the material guiding shell 24, it will cause the tungsten steel powder to accumulate at the discharging position of the rotating shell 30, affecting the uniformity of the tungsten steel powder).

[0058] When the material guiding shell 24 and its upper parts move until the rack 32 contacts the first shielding member 14 on the right, the rack 32 remains stationary based on the first shielding member 14. At this time, the material guiding shell 24 continues to move to the right. Under the action of the stationary rack 32, it drives the two gears 31 to rotate. The two gears 31 then respectively drive the adjacent rotating shells 30 to rotate clockwise (clockwise when looking from front to back). The two sliding members 40 move to the right along with the material guiding shell 24. The left sliding member 40 is squeezed by the left extrusion block 41, so that the left sliding member 40 drives the adjacent magnetic attracting member 50 to move downward. And at this time, the magnetic force between the left magnetic attracting member 50 and the material guiding shell 24 is less than the squeezing force of the left on the adjacent sliding member 40. After the right sliding member 40 is no longer squeezed by the right extrusion block 41, the right sliding member 40 drives the right magnetic attracting member 50 to move upward by virtue of the suction force of the adjacent magnetic attracting member 50 on the material guiding shell 24.

[0059] After the material guiding shell 24 moves until its right side contacts the first shielding member 14 on the right, the right rotating shell 30 guides the tungsten steel powder in the material guiding shell 24, and the left rotating shell 30 rotates to block the left side of the material guiding shell 24. At this time, the left sliding member 40 extends downward. After the material guiding shell 24 moves until its right side contacts the first shielding member 14 on the right, the electric slider on the second electric member 22 drives the first driving member 23 and the material guiding shell 24 and its attached parts to move to the left. Subsequently, the first driving member 23 drives the material guiding shell 24 and its attached parts to move downward, raising the height of the material guiding shell 24, and repeating the above process of laying the tungsten steel powder. During the process of the sliding member 40 moving to the left along with the material guiding shell 24, the surface of the tungsten steel powder is smoothed, so that the surface of the laid tungsten steel powder remains flat. When the material guiding shell 24 moves to the left and the rack 32 contacts the first shielding member 14 on the left, just repeat the actions of the rack 32 in the reverse direction.

[0060] After the external feeding device feeds the tungsten carbide powder required for work into the feeding pipe 21, the guiding shell 24 feeds the tungsten carbide powder required for work between the upper side of the fixed box 11 and the two first shielding members 14 and the second shielding member 15, thereby completing the filling of the tungsten carbide powder, and the first vibrating member 64 stops working.

[0061] After the filling of the tungsten carbide powder is completed, the first driving member 23 drives the guiding shell 24 to move upward and reset, and then the electric slider in the first electric member 17 drives the L-shaped frame 18 and its attached parts to move backward until the sealing cover 19 no longer shields the upper sides of the two first shielding members 14 and the second shielding member 15. Subsequently, the extrusion part 13 presses the tungsten carbide powder in the two first shielding members 14 and the second shielding member 15 to extrude the tungsten carbide powder into the required thickness for work. Finally, the finished product is taken out by the staff, and the subsequent discharging and pressing processes can be repeated as above.

[0062] During the pressing process of the tungsten carbide powder, in addition to pressing the tungsten carbide powder into a complete cube, positioning rods are added to the mold to leave positioning holes during the pressing process, so as to facilitate subsequent installation. However, due to the relatively small space around the positioning rods, the flow and rearrangement of the tungsten carbide powder during compression are restricted, and it is difficult to reach the best compaction state. In addition, the presence of the positioning rods will block part of the pressure from being transmitted to the powder around them, resulting in the pressure on the powder around the positioning rods being less than that in other areas, thus causing the density of the powder around the positioning rods to be lower. These two problems will cause the strength of the tungsten carbide powder at the positioning holes after compaction to decrease, making it prone to cracking. Therefore, the present invention adopts a vibration treatment method to increase the compactness of the tungsten carbide powder in the positioning hole area, and ensures that the normal operation of the surrounding parts will not be affected during the vibration process.

[0063] Embodiment 2: On the basis of Embodiment 1, as Figure 4 、 Figure 11 and Figure 12As shown in the figure, it further includes a second compaction component disposed in the fixed box 11. The second compaction component is used to increase the compactness of the tungsten carbide powder at the positioning holes. The second compaction component includes: a second driving member 70 fixedly connected inside the fixed box 11, and a connecting member 71 fixedly connected to the telescopic end of the second driving member 70; a sliding plate 73 disposed on the connecting member 71, the sliding plate 73 is provided with a second vibrating member 74, and a plurality of connecting pipes 75 are arranged on the sliding plate 73; a support rod 76 fixedly connected to the side of the connecting pipe 75 away from the sliding plate 73, the fixed box 11 is fixedly connected with a bottom plate 77, and the bottom plate 77 and two symmetrically distributed first shielding members 14 and second shielding members 15 form a fixed mold. The bottom plate 77 is provided with limiting holes having the same number as the support rods 76. The limiting holes on the bottom plate 77 are slidably matched with the adjacent support rods 76 and the adjacent connecting pipes 75. The connecting member 71 is fixedly connected with a fixing ring 72, and the fixing ring 72 is fixedly connected with the sliding plate 73. Two symmetrically distributed springs are arranged between the connecting member 71 and the sliding plate 73, and the two symmetrically distributed springs are both sleeved on the fixing ring 72. The support rod 76 is composed of two rods with different diameters. The diameter of the small-diameter rod on the support rod 76 is smaller than the diameter of the adjacent limiting hole on the bottom plate 77, and the upper end of the support rod 76 is provided with a tip.

[0064] In the above solution, the second driving member 70 is an electric push rod, the second driving member 70 is electrically connected to the control panel, and the second driving member 70 is fixedly connected inside the fixed box 11 through a bolt holder. Although the sliding plate 73 is located inside the fixed box 11, there is no connection relationship between them. The second vibrating member 74 is composed of a vibrating motor and an eccentric block, and the eccentric block is fixedly connected to the power output end of the vibrating motor. There are two second vibrating members 74 in the present invention, and the rotation directions of the eccentric blocks on the two second vibrating members 74 are opposite, which is used to stabilize the vibration frequency of the sliding plate 73. There are four connecting pipes 75 and support rods 76 in the present invention, and they are located at the four corners of the sliding plate 73. The number of the connecting pipes 75 and the support rods 76 is the same as the number of the positioning holes (the positioning holes provided with installation positions in the finished product). The number of the connecting pipes 75 and the support rods 76 can be adjusted according to the number of the positioning holes of the finished product. The fixing ring 72 is an elastic airbag. When the small-diameter rod on the support rod 76 moves into the adjacent limiting hole on the bottom plate 77, the support rod 76 can start to vibrate. Through the vibration of the support rod 76, the compactness of the surrounding tungsten carbide powder is increased, and the tip of the support rod 76 is used to penetrate the surrounding tungsten carbide powder.

[0065] After the pressing of the tungsten carbide powder is completed, the telescopic part of the second driving member 70 pushes the connecting member 71, the fixing ring 72, the sliding plate 73 and its attached parts upward, so that all the support rods 76 move upward along the adjacent limiting holes on the bottom plate 77 respectively, and through the tips on the support rods 76, the support rods 76 can penetrate the surrounding tungsten carbide powder.

[0066] When the sliding plate 73 drives all the connecting pipes 75 and all the support rods 76 to move until the corrugated parts on the connecting pipes 75 are located in the adjacent limiting holes on the bottom plate 77, the small-diameter rods on the support rods 76 are located in the adjacent limiting holes on the bottom plate 77. Then, the staff operates the second vibrating member 74 to vibrate. During the vibration of the second vibrating member 74, it drives the sliding plate 73 and its attached parts to resonate, causing all the support rods 76 to vibrate. During the vibration of the support rods 76, the compactness of the surrounding tungsten carbide powder is increased, and the overall compactness of the tungsten carbide powder is increased, preventing the strength of the compacted tungsten carbide powder from decreasing at the positioning holes, thus easily causing cracks.

[0067] During the vibration of the support rods 76, the telescopic parts of the adjacent connecting pipes 75 are deformed, so as to isolate the vibration of the support rods 76 and avoid the vibration of the bottom plate 77 caused by the vibration of the support rods 76, thereby preventing the bottom plate 77 from transmitting the vibration force to other parts and damaging the structural strength of the parts. During the vibration of the sliding plate 73, it drives the fixed ring 72 to deform and the adjacent springs to deform, so as to protect the second driving member 70 and avoid the second driving member 70 being affected by resonance.

[0068] When the vibration of the tungsten carbide powder near the support rods 76 is completed, the second vibrating member 74 stops vibrating. At this time, the staff operates the pressing part 13 to press the two first shielding members 14 and the second shielding member 15 and the tungsten carbide powder on the bottom plate 77. During the pressing process, the lower side of the pressing part 13 passes through all the support rods 76 and slides along them to achieve the pressing of the tungsten carbide powder.

[0069] When the pressing of the tungsten carbide powder is completed, the pressing part 13 resets. The telescopic part of the second driving member 70 drives the sliding plate 73 and its attached parts to move downward, so that all the parts on the sliding plate 73 are reset to the Figure 11 state in the figure. When the tungsten carbide powder needs to be processed again, the above actions can be repeated.

[0070] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A tungsten steel powder pressing and molding device, comprising: A base frame (10), the base frame (10) being provided with a fixed box (11), a support frame (12) being fixedly connected to a side of the fixed box (11) away from the base frame (10), a pressing portion (13) being provided on a side of the support frame (12) away from the fixed box (11), and two first shielding members (14) and a second shielding member (15) being symmetrically distributed on the fixed box (11), wherein the fixed box (11) is characterized in that it further comprises: A support member (16) is fixedly connected to the base frame (10); the support member (16) is fixedly connected to a first electric member (17); the first electric member (17) is provided with an L-shaped frame (18); a sealing cover (19) is fixedly connected to a side of the L-shaped frame (18) away from the first electric member (17); two symmetrically distributed first shielding members (14) and two symmetrically distributed second shielding members (15) are both in sealing cooperation with the sealing cover (19); A feeding part, arranged in the sealing cover (19), for providing tungsten steel powder to two symmetrically distributed first shielding members (14) and second shielding members (15); Also includes: A second vibration compaction component is arranged in the fixing box (11), and the second vibration compaction component is used to increase the compaction degree of the tungsten steel powder at the positioning hole, and the second vibration compaction component comprises: A second driving member (70) is fixedly connected in the fixed box (11), and a connecting member (71) is fixedly connected to a telescopic end of the second driving member (70); A sliding plate (73) is arranged on the connecting member (71); the sliding plate (73) is provided with a second vibrating member (74); and a plurality of connecting pipes (75) are arranged on the sliding plate (73); A support rod (76) is fixedly connected to a side of the connecting tube (75) away from the sliding plate (73); the fixed box (11) is fixedly connected to a bottom plate (77); the bottom plate (77) and two symmetrically distributed first shielding members (14) and second shielding members (15) form a fixed mold; the bottom plate (77) is provided with limiting holes having the same number as the support rods (76); the limiting holes on the bottom plate (77) are slidably matched with adjacent support rods (76) and adjacent connecting tubes (75); The connecting member (71) is fixedly connected to a fixing ring (72), the fixing ring (72) is fixedly connected to the sliding plate (73), two symmetrically distributed springs are arranged between the connecting member (71) and the sliding plate (73), and the two symmetrically distributed springs are both sleeved on the fixing ring (72); The support rod (76) is composed of two rods of different diameters, the diameter of the small-diameter rod on the support rod (76) is smaller than the diameter of the adjacent limiting hole on the bottom plate (77), and a tip is provided at the upper end of the support rod (76).

2. A tungsten steel powder compacting device according to claim 1, characterized in that: The feeding department includes: A fixed shell (20) is fixedly connected to the sealing cover (19), and the fixed shell (20) is fixedly connected to and communicates with a feeding pipe (21) that passes through the sealing cover (19) and the L-shaped frame (18); The second electric component (22) is fixedly connected in the sealing cover (19), the second electric component (22) is provided with a first driving component (23), the telescopic end of the first driving component (23) is fixedly connected to a material guide shell (24), and a bellows is fixedly connected and communicated between the material guide shell (24) and the fixed shell (20).

3. A tungsten steel powder compacting device according to claim 2, characterized in that: The feeding department also includes: The symmetrically distributed rotating shells (30) are all rotatably connected to the side of the material guide shell (24) facing away from the fixed shell (20); the symmetrically distributed rotating shells (30) are all in communication with the material guide shell (24); the symmetrically distributed rotating shells (30) are all fixedly connected with gears (31); the side of the material guide shell (24) away from the fixed shell (20) is slidably connected with a rack (32); the gears (31) on the symmetrically distributed rotating shells (30) are all meshed with the rack (32); and the rack (32) is extruded and matched with the first shielding member (14); A first vibration component is arranged in the fixed shell (20), and the first vibration component is used to increase the compactness of the tungsten steel powder during the placement process.

4. A tungsten steel powder compacting device according to claim 3, characterized in that: The side of the material guide shell (24) away from the fixed shell (20) is slidably connected to symmetrically distributed sliding members (40), and the rack (32) is fixedly connected to symmetrically distributed extrusion blocks (41), and the extrusion blocks (41) are extrusion-matched with adjacent sliding members (40).

5. A tungsten steel powder compacting device according to claim 4, characterized in that: The distance between the lower side of the middle of the sliding member (40) and the inner bottom of the material guide shell (24) is a, and the length of the extrusion block (41) is b, and the values ​​of a and b are the same.

6. A tungsten steel powder compacting device according to claim 4, characterized in that: A magnetic attraction member (50) is fixedly connected to a side of the sliding member (40) facing the fixed shell (20), and the magnetic attraction member (50) is magnetically matched with the material guiding shell (24).

7. A tungsten steel powder compacting device according to claim 3, characterized in that: The first vibration assembly comprises: The symmetrically distributed elastic members (60) are all fixedly connected to the fixed shell (20); the opposite sides of the symmetrically distributed elastic members (60) are all fixedly connected to U-shaped frames (61); the opposite sides of the symmetrically distributed U-shaped frames (61) are all fixedly connected to symmetrically distributed fixed blocks (62); a protective cover (63) is provided in the fixed shell (20); the protective cover (63) is fixedly connected to all the fixed blocks (62); A first vibrating member (64) is disposed in the protective cover (63), and the first vibrating member (64) is used to assist in material feeding.

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