A dry pressing device for alumina ceramic products
Patent Information
- Application Number
- CN202521866311.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-01
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-01
AI Technical Summary
[0002]方形氧化铝陶瓷块作为芯片封装的载体，常常用于支撑和保护集成电路元件，同时提供电气连接，其高绝缘性和良好的热导率可确保芯片稳定工作，氧化铝陶瓷制品一般由人工启动液压机对氧化铝陶瓷粉末进行干压成型，在氧化铝陶瓷干压成型过程中，通常需要添加粘合剂，这些粘合剂能够帮助氧化铝陶瓷粉末在模具中更好地流动和填充，从而提高成型的均匀性和坯体的密度，在现有的压制过程中，通常是人工直接在模具里倒入氧化铝陶瓷粉末和粘合剂进行搅拌，该方式搅拌容易导致氧化铝陶瓷粉末和粘合剂混合不均，致使成型后胚体的密度过低和脱模时坯体开裂，影响干压成型质量，并且在氧化铝陶瓷粉末倒入模具中进行干压时，模具中的氧化铝陶瓷粉末分布不匀，会在压制过程中使氧化铝陶瓷粉末成型残缺，因此，有必要针对现有技术的缺点，设计一种氧化铝陶瓷制品干压成型装置
[0010] This utility model has the following advantages: By using the thread on the outer wall of the first discharge port of the mixing barrel and the thread on the inner wall of the threaded cover to engage, the drive motor can rotate the mixing barrel and the first discharge port, causing the threaded cover to gradually move away from the engagement. The rotation of the mixing barrel can fully mix the alumina ceramic powder and the binder inside, avoiding uneven mixing that would lead to low density of the molded blank and cracking of the blank during demolding, thus greatly improving the efficiency of subsequent work.
Smart Images
Figure CN224702223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dry pressing technology, and in particular to a dry pressing device for alumina ceramic products. Background Technology
[0002] Square alumina ceramic blocks, used as carriers for chip packaging, are often used to support and protect integrated circuit components while providing electrical connections. Their high insulation and good thermal conductivity ensure stable chip operation. Alumina ceramic products are generally dry-pressed by manually operating a hydraulic press to form alumina ceramic powder. During the dry pressing process, binders are usually added to help the alumina ceramic powder flow and fill better in the mold, thereby improving the uniformity of the molding and the density of the blank. In the existing pressing process, alumina ceramic powder and binder are usually poured directly into the mold and stirred manually. This stirring method easily leads to uneven mixing of alumina ceramic powder and binder, resulting in low density of the molded blank and cracking of the blank during demolding, affecting the quality of dry pressing. Furthermore, when alumina ceramic powder is poured into the mold for dry pressing, the uneven distribution of alumina ceramic powder in the mold can cause defects in the alumina ceramic powder during the pressing process. Therefore, it is necessary to design a dry pressing device for alumina ceramic products to address the shortcomings of the existing technology. Utility Model Content
[0003] In order to overcome the shortcomings mentioned in the background art, this utility model provides a dry pressing device for alumina ceramic products.
[0004] The technical solution is as follows: A dry pressing molding device for alumina ceramic products includes a base plate, with fixed plates symmetrically fixed to the upper side of the base plate. A ring is rotatably connected between the two fixed plates via a rotating shaft. A first concave plate is fixed to one side of the ring. A drive motor is installed inside the first concave plate. A mixing tank is fixed to the output end of the drive motor. The outer wall of the mixing tank is rotatably connected to the ring. The mixing tank is provided with a feed inlet, and the feed inlet of the mixing tank is slidably sealed with a sealing cap. A first discharge outlet is opened at one end of the mixing tank. The outer wall of the first discharge outlet is threaded. A discharge mechanism is provided on one side of the first discharge outlet, and a shaping mechanism is provided on one side of the base plate.
[0005] As a further preferred embodiment, the discharge mechanism includes a second concave plate, which is fixed to one side of the base plate. A first elastic telescopic rod is symmetrically fixed to one side of the second concave plate. The telescopic ends of the two first elastic telescopic rods are fixed to a mounting bracket via a connecting block. A threaded cap is fixed to the end of the mounting bracket, and the threaded cap engages with the thread on the outer wall of the first discharge port. A rack is symmetrically and slidably connected above the second concave plate, and the rack slides in the groove of the fixed plate. A stop bar is fixed to one side of the rack. When the first elastic telescopic rod drives the mounting bracket to move, it contacts the stop bar. A gear is fixed to the rotating shaft on the fixed plate, and the gear is located on one side of the fixed plate. The rack meshes with the gear.
[0006] As a further preferred embodiment, the discharge mechanism also includes a feeding box, which is fixed to one side of the bottom plate. An arc-shaped groove is opened on one side of the feeding box, and the outer wall of the mixing barrel matches the arc-shaped groove of the feeding box. A second discharge port is provided on the other side of the feeding box. The bottom of the feeding box is provided with an inclined surface, and the second discharge port is located at the inclined surface at the bottom of the feeding box. A concave plate baffle is fixed to one side of the feeding box. Springs are symmetrically fixed to the top wall of the concave plate baffle. An L-shaped plate is fixed between the other ends of the two springs. When the L-shaped plate moves, it cooperates with the second discharge port, and the cross-section of the L-shaped plate is an inverted triangle.
[0007] As a further preferred option, the shaping mechanism includes a hydraulic cylinder. The hydraulic cylinder is installed through one side of the second concave plate. A pressure plate is fixed to the telescopic end of the hydraulic cylinder. Four fixing rods are fixed to the bottom of the base plate. A template is fixed to one end of each of the four fixing rods. A bottom mold is slidably connected to the inner wall of the template. The bottom surface of the bottom mold contacts the base plate. A handle is fixed to one side of the bottom mold.
[0008] As a further preferred embodiment, the shaping mechanism also includes a connecting rod, with the connecting rod symmetrically fixed to one side of the pressure plate, and a push rod fixed to the other end of the connecting rod. A second elastic telescopic rod is fixed to the inner side of the second concave plate, and a sliding plate is fixed to the telescopic end of the second elastic telescopic rod. Several circular protrusions are fixed to one side of the sliding plate, and the push rod contacts the circular protrusions when it moves.
[0009] As a further preferred embodiment, the shaping mechanism also includes sliders, with sliders symmetrically fixed to both sides of the slide plate, and a rectangular slide frame fixed to the inner side of the second concave plate. The sliders and the rectangular slide frame are slidably connected, and a knocking rod is fixed to one side of the slide plate. When the knocking rod moves, it contacts the bottom mold.
[0010] This utility model has the following advantages: By using the thread on the outer wall of the first discharge port of the mixing barrel and the thread on the inner wall of the threaded cover to engage, the drive motor can rotate the mixing barrel and the first discharge port, causing the threaded cover to gradually move away from the engagement. The rotation of the mixing barrel can fully mix the alumina ceramic powder and the binder inside, avoiding uneven mixing that would lead to low density of the molded blank and cracking of the blank during demolding, thus greatly improving the efficiency of subsequent work.
[0011] During the dry pressing process of the raw material being poured into the mold, the pressure plate is moved downward by the telescopic end of the hydraulic cylinder. The pressure plate simultaneously moves the connecting rod and the push rod downward. The push rod contacts the circular protrusion on the slide plate and squeezes the second elastic telescopic rod. The second elastic telescopic rod is forced to move the slide plate, which in turn moves the hammer rod. When the push rod disengages from the circular protrusion, the second elastic telescopic rod, under its own elastic force, causes the hammer rod to extend and strike the bottom mold. The vibration generated by the strike ensures that the raw material in the mold is evenly distributed within the mold, preventing uneven distribution of alumina ceramic powder in the mold and thus avoiding defects in the pressed alumina ceramic powder. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the ring structure of this utility model; Figure 3 This is a schematic diagram of the first discharge port structure of this utility model; Figure 4 This is a schematic diagram of the feed box structure of this utility model; Figure 5 This is a schematic diagram of the L-shaped plate structure of this utility model; Figure 6 This is a schematic diagram of the hydraulic cylinder structure of this utility model; Figure 7 This is a schematic diagram of the skateboard structure of this utility model.
[0013] Wherein: 1-base plate, 2-fixed plate, 3-ring, 4-first concave plate, 5-drive motor, 6-mixing bucket, 7-sealing cover, 8-first discharge port, 9-gear, 10-rack, 11-threaded cover, 12-mounting bracket, 13-second concave plate, 14-first elastic telescopic rod, 15-stop bar, 16-feed box, 17-spring, 18-concave plate baffle, 19-L-shaped plate, 20-hydraulic cylinder, 21-pressure plate, 22-connecting rod, 23-push rod, 24-rectangular slide frame, 25-slider, 26-slide plate, 27-circular protrusion, 28-second elastic telescopic rod, 29-knocking rod, 30-bottom mold, 31-handle, 32-template, 33-fixed rod, 34-second discharge port. Detailed Implementation
[0014] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "setting," "installing," "connecting," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances. Example
[0015] A dry pressing device for alumina ceramic products, such as Figures 1-7 As shown, it includes a base plate 1, two fixing plates 2 are fixedly connected to the top left side of the base plate 1, and a ring 3 is rotatably connected between the two fixing plates 2 via a rotating shaft. A first concave plate 4 is fixedly connected to the left side wall of the ring 3, and a drive motor 5 is installed inside the first concave plate 4. A mixing tank 6 is fixedly connected to the output end of the drive motor 5. The outer wall of the mixing tank 6 is rotatably connected to the inner wall of the ring 3. A feed inlet is provided on the upper side of the mixing tank 6, and a sealing cover 7 is slidably sealed to the feed inlet of the mixing tank 6. A first discharge port 8 is provided on the right end of the mixing tank 6. The outer wall of the first discharge port 8 is threaded, and a discharge mechanism is provided on the outer side of the first discharge port 8. A shaping mechanism is provided on the top right side of the base plate 1.
[0016] The discharge mechanism includes a second concave plate 13. The second concave plate 13 is fixedly connected to the right side of the top of the base plate 1. The top of the second concave plate 13 is symmetrically fixedly connected to a first elastic telescopic rod 14. The telescopic ends of the two first elastic telescopic rods 14 are fixedly connected to a mounting bracket 12 through a connecting block. The left end of the mounting bracket 12 is fixedly connected to a threaded cap 11. The threaded cap 11 is engaged with the thread on the outer wall of the first discharge port 8. The top of the second concave plate 13 is symmetrically limited and slidably connected to a rack 10. The rack 10 slides in the groove of the fixed plate 2. The right side of the rack 10 is fixedly connected to a stop rod 15. When the first elastic telescopic rod 14 drives the mounting bracket 12 to move, it contacts the stop rod 15. A gear 9 is fixedly connected to the rotating shaft on the fixed plate 2. The gear 9 is located outside the fixed plate 2, and the rack 10 meshes with the gear 9.
[0017] The discharge mechanism also includes a feeding box 16, which is fixed to the top center of the base plate 1. An arc-shaped groove is provided on the left side of the feeding box 16, and the outer wall of the mixing barrel 6 matches the arc-shaped groove of the feeding box 16. A second discharge port 34 is provided on the right side of the feeding box 16. The bottom of the feeding box 16 is a sloping structure and is inclined with the left side higher than the right side. A concave plate baffle 18 is fixed to the right side of the feeding box 16. Springs 17 are symmetrically fixed to the top of the concave plate baffle 18. An L-shaped plate 19 is fixed between the lower ends of the two springs 17. When the L-shaped plate 19 moves, it cooperates with the second discharge port 34, and the cross-section of the L-shaped plate 19 is an inverted triangle.
[0018] The shaping mechanism includes a hydraulic cylinder 20, which is installed through the middle of the second concave plate 13. The pressure plate 21 is fixed to the telescopic end of the hydraulic cylinder 20. Four fixing rods 33 are fixed to the top of the base plate 1. A template 32 is fixed between the upper ends of the four fixing rods 33. A bottom mold 30 is slidably connected to the inner wall of the template 32. The bottom surface of the bottom mold 30 contacts the top of the base plate 1. A handle 31 is fixed to the right side wall of the bottom mold 30.
[0019] The shaping mechanism also includes a connecting rod 22. The top of the pressure plate 21 is symmetrically fixed with the connecting rod 22. The other end of the connecting rod 22 is fixed with a push rod 23. The side wall inside the second concave plate 13 is fixed with a second elastic telescopic rod 28. The telescopic end of the second elastic telescopic rod 28 is fixed with a slide plate 26. The side wall of the slide plate 26 is fixed with several circular protrusions 27. When the push rod 23 moves, it contacts the circular protrusions 27.
[0020] The shaping mechanism also includes a slider 25, which is symmetrically fixed to both sides of the slide plate 26. A rectangular slide frame 24 is fixed to the inner side of the second concave plate 13. The slider 25 is slidably connected to the rectangular slide frame 24. A knocking rod 29 is fixed to one side of the slide plate 26. When the knocking rod 29 moves, it contacts the bottom mold 30.
[0021] When mixing alumina ceramic powder is required, the first outlet 8 is threadedly closed with the threaded cap 11. The sealing cap 7 is removed from the mixing tank 6, and alumina ceramic powder and an appropriate amount of adhesive powder are poured into the mixing tank 6 through the inlet. The sealing cap 7 is then reset and fixed. Subsequently, the drive motor 5 is started to drive the mixing tank 6 to reverse, causing the mixing tank 6 to rotate the first outlet 8. At this time, the threaded cap 11 moves to the right under the threaded drive of the first outlet 8. While the mixing tank 6 rotates, it can mix the alumina ceramic powder and adhesive powder inside. When the threaded cap 11 moves to the right and disengages from the first outlet 8, the alumina ceramic powder and adhesive powder in the mixing tank 6 are completely mixed, and the drive motor 5 is turned off. During the movement of the threaded cap 11 to the right, it will drive the mounting bracket 12 to the right, and the first elastic telescopic rod 14 will gradually compress. When the mounting bracket 12 moves to the right and contacts the stop rod 15, At this point, the threaded cap 11 disengages from the first discharge port 8. Manually pull the mounting bracket 12 to continue moving to the right. The mounting bracket 12 moves to the right, which pushes the rack 10 to the right via the stop bar 15. The rack 10 moves to the right, which causes the gear 9 to swing the ring 3 downward around the center point of the shaft via the shaft connected to it. The arc groove of the feed box 16 limits the downward swing of the mixing barrel 6. During the downward swing of the mixing barrel 6, the mixed material inside flows into the feed box 16. The material in the feed box 16 slides to the right along its inclined surface and is blocked by the L-shaped plate 19. Then, manually swing the mixing barrel 6 upward to reset it. After that, control the mounting bracket 12 to move to the left. At the same time, under the elastic force of the first elastic telescopic rod 14, the threaded cap 11 can make contact with the thread of the first discharge port 8. The drive motor 5 makes the mixing barrel 6 rotate clockwise, so that the threaded cap 11 and the first discharge port 8 are engaged.
[0022] When it is necessary to shape the alumina ceramic powder, the hydraulic cylinder 20 is activated and retracts. The retraction of the hydraulic cylinder 20 causes the pressure plate 21 to move upward, which in turn pushes the L-shaped plate 19 upward, causing the L-shaped plate 19 to compress the spring 17. The spring 17 is then compressed, and the L-shaped plate 19 no longer blocks the second outlet 34 of the feed box 16. The alumina ceramic powder and adhesive flow out from the second outlet 34 and into the template 32. Subsequently, the hydraulic cylinder 20 moves downward, causing the pressure plate 21 to move downward. Under the action of the spring 17, the L-shaped plate 19 moves downward to block the second outlet 34. At the same time, the downward movement of the pressure plate 21 causes the connecting rod 22 and the push rod 23 to move downward. When the push rod 23 moves downward and contacts the circular protrusion 27 on the slide plate 26, the push rod 23 continues to move downward. At this time, the slide plate 26 drives the second elastic telescopic rod 28 to extend and retract. The material is compressed and retracted, and the slider 25 slides within the rectangular slide frame 24. When the push rod 23 disengages from the circular protrusion 27, the second elastic telescopic rod 28 extends the hammer rod 29 under its own elastic force to strike the bottom mold 30. The vibration generated by the hammering causes the material in the template 32 to be evenly dispersed, which greatly improves the forming efficiency of alumina ceramic powder during the pressing process. Subsequently, the telescopic end of the hydraulic cylinder 20 drives the pressure plate 21 to close with the template 32 for shaping and dry pressing. After the shaping and dry pressing is completed, the telescopic end of the hydraulic cylinder 20 moves upward, and the handle 31 on the bottom mold 30 is manually lifted upward. The handle 31 drives the bottom mold 30 to move upward. At this time, the outer wall of the bottom mold 30 contacts the inner wall of the template 32 until the bottom mold 30 is completely inserted into the template 32, so that the template 32 and the formed alumina powder form a height difference, which makes it easy for the manual removal of the formed alumina powder. The hydraulic cylinder 20 moves back and forth until all the material in the feed box 16 is pressed into shape.
[0023] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.
Claims
1. A dry pressing device for alumina ceramic products, characterized in that: It includes a base plate (1), a fixed plate (2) is symmetrically fixed on the upper side of the base plate (1), a ring (3) is rotatably connected between the two fixed plates (2) through a rotating shaft, a first concave plate (4) is fixed on one side of the ring (3), a drive motor (5) is installed in the first concave plate (4), a mixing tank (6) is fixed at the output end of the drive motor (5), the outer wall of the mixing tank (6) is rotatably connected to the ring (3), the mixing tank (6) is provided with a feed port, and the feed port of the mixing tank (6) is slidably sealed with a sealing cap (7), and a first discharge port (8) is opened at one end of the mixing tank (6), the outer wall of the first discharge port (8) is provided with threads, a discharge mechanism is provided on one side of the first discharge port (8), and a shaping mechanism is provided on one side of the base plate (1).
2. The alumina ceramic product dry pressing device as described in claim 1, characterized in that: The discharge mechanism includes a second concave plate (13), a second concave plate (13) is fixed to one side of the base plate (1), a first elastic telescopic rod (14) is symmetrically fixed to one side of the second concave plate (13), the telescopic ends of the two first elastic telescopic rods (14) are fixed to a mounting bracket (12) through a connecting block, a threaded cover (11) is fixed to the end of the mounting bracket (12), the threaded cover (11) is engaged with the thread on the outer wall of the first discharge port (8), a rack (10) is symmetrically limited and slidably connected above the second concave plate (13), the rack (10) slides in the groove of the fixed plate (2), a stop rod (15) is fixed to one side of the rack (10), when the first elastic telescopic rod (14) drives the mounting bracket (12) to move, it contacts the stop rod (15), a gear (9) is fixed to the rotating shaft on the fixed plate (2), the gear (9) is located on one side of the fixed plate (2), and the rack (10) meshes with the gear (9).
3. The alumina ceramic product dry pressing molding device as described in claim 2, characterized in that: The discharge mechanism also includes a feeding box (16), a feeding box (16) is fixedly connected to one side of the bottom plate (1), an arc groove is opened on one side of the feeding box (16), the outer wall of the mixing bucket (6) matches the arc groove of the feeding box (16), a second discharge port (34) is provided on the other side of the feeding box (16), a slope is provided at the bottom of the feeding box (16), the second discharge port (34) is located at the bottom slope of the feeding box (16), a concave plate baffle (18) is fixedly connected to one side of the feeding box (16), springs (17) are symmetrically fixedly connected to the top wall of the concave plate baffle (18), an L-shaped plate (19) is fixedly connected between the other ends of the two springs (17), the L-shaped plate (19) cooperates with the second discharge port (34) when it moves, and the cross section of the L-shaped plate (19) is an inverted triangle.
4. The alumina ceramic product dry pressing device as described in claim 3, characterized in that: The shaping mechanism includes a hydraulic cylinder (20), a hydraulic cylinder (20) is installed through one side of the second concave plate (13), a pressure plate (21) is fixed to the telescopic end of the hydraulic cylinder (20), four fixing rods (33) are fixed to the bottom of the base plate (1), a template (32) is fixed to one end of the four fixing rods (33), a bottom mold (30) is slidably connected to the inner wall of the template (32), the bottom surface of the bottom mold (30) is in contact with the base plate (1), and a handle (31) is fixed to one side of the bottom mold (30).
5. The alumina ceramic product dry pressing device as described in claim 4, characterized in that: The shaping mechanism also includes a connecting rod (22), a connecting rod (22) is symmetrically fixed to one side of the pressure plate (21), a push rod (23) is fixed to the other end of the connecting rod (22), a second elastic telescopic rod (28) is fixed to the inner side of the second concave plate (13), a slide plate (26) is fixed to the telescopic end of the second elastic telescopic rod (28), and several circular protrusions (27) are fixed to one side of the slide plate (26). When the push rod (23) moves, it contacts the circular protrusions (27).
6. The alumina ceramic product dry pressing device as described in claim 5, characterized in that: The shaping mechanism also includes a slider (25), sliders (25) are symmetrically fixed on both sides of the slide plate (26), a rectangular slide frame (24) is fixed on the inner side of the second concave plate (13), sliders (25) and rectangular slide frame (24) are slidably connected, and a knocking rod (29) is fixed on one side of the slide plate (26). When the knocking rod (29) moves, it contacts the bottom mold (30).