Diamond saw blade cold pressing machining device

Abstract

The invention discloses a diamond saw blade cold pressing machining device, and belongs to the field of cold pressing. The device comprises a hydraulic press, a die set is installed on the hydraulic press, a saw blade base body is placed in the die set, and a feeding device is arranged on one side of the die set. The hydraulic press comprises a pressure plate; an annular pressure plate is fixedly mounted at the bottom of the pressure plate; the die set comprises a cold pressing die, a cold pressing groove is formed in the cold pressing die, and the saw blade base body is placed in the center of the cold pressing groove. The feeding device comprises a feeding pipe and a scraping assembly, one end of the feeding pipe extends into the cold pressing groove, and the scraping assembly is arranged in the feeding pipe; the scraping assembly comprises a flexible plate and a driving part, and the periphery of the flexible plate is attached to the inner wall of the feeding pipe. And meanwhile, through the arrangement of the scraping assembly, the inner wall of the pipeline is cleaned, the situation that raw materials actually enter a mold are insufficient due to the fact that the raw materials adhere to the inner wall of the pipeline is prevented, and the problem that the raw materials machined through a diamond saw blade tool bit adhere to the inner wall of the feeding pipeline and are difficult to clean through a conventional vibration means is solved.

Description

Technical Field

[0001] This invention relates to the field of cold pressing, and in particular to a cold pressing apparatus for diamond saw blades. Background Technology

[0002] Powder pressing presses are core forming equipment in the field of powder metallurgy, mainly used for pressing and forming metal or non-metal powders. Cold isostatic pressing is a forming technology that uses powder within an elastic mold as the processing object and applies isotropic pressure to the powder body through a high-pressure fluid medium. This process belongs to the category of powder metallurgy cold pressing forming system and, together with molding technology, constitutes conventional cold pressing forming methods. Its core feature is achieving material densification under pressures of millions of pounds at room temperature, and it is suitable for the uniform pressing of various powder materials such as metals and ceramics.

[0003] The conventional method for cold pressing diamond saw blades involves fixing the substrate in the center of a cold pressing mold, then feeding the raw material mixed with diamonds evenly into the annular groove formed by the mold and the substrate through a feeding system. Finally, the raw material in the annular groove is cold-pressed using a cold press. However, this traditional method has the following drawbacks: The raw material for diamond saw blades consists of a mixture of diamond particles and metal powder. This metal powder mixture contains an organic binder, which softens and becomes sticky due to the processing environment. This causes the mixture of metal powder and diamond particles to adhere to the tube wall. Because the ratio of the raw material for the blade is precisely designed, the material adhering to the tube wall cannot enter the forming mold, resulting in a deviation from the preset values ​​for the diamond concentration and matrix metal composition in the actual mixture entering the mold. If too much diamond particle is lost due to adhesion, the cutting ability of the blade decreases significantly. If the matrix metal powder adheres unevenly, it will cause an imbalance in the matrix's hardness and toughness, making the saw blade prone to chipping and tooth breakage during cutting. Traditional anti-clogging methods involve adding vibration equipment to the feed tube to dislodge the material adhering to the tube wall. However, due to the stickiness of the organic binder, the effectiveness of vibration in preventing clogging is limited. Summary of the Invention

[0004] This invention provides a cold pressing processing device for diamond saw blades, which can solve the problem that raw materials adhering to the inner wall of the feed pipe during diamond saw blade cutting can be difficult to clean using conventional vibration methods.

[0005] One of the objectives of this invention is achieved through the following technical solution: In a first aspect, this application provides a diamond saw blade cold pressing processing device, including a hydraulic press, a mold assembly installed on the hydraulic press, a saw blade base placed inside the mold assembly, and a feeding device provided on one side of the mold assembly; The hydraulic press includes a pressure plate, and an annular pressure plate is fixedly installed at the bottom of the pressure plate; The mold assembly includes a cold pressing mold, on which a cold pressing groove is formed, and the saw blade base is placed in the center of the cold pressing groove. The feeding device includes a feeding pipe and a scraping assembly. One end of the feeding pipe extends into the cold pressing tank, and the scraping assembly is disposed inside the feeding pipe. The scraping assembly includes a flexible plate and a driving component. The flexible plate is attached to the inner wall of the feed tube around its perimeter, and the driving component drives the flexible plate to move within the feed tube.

[0006] A further aspect of the present invention is that the hydraulic press further includes a machine body and a hydraulic pressure system, the hydraulic pressure system being mounted on the machine body, and the hydraulic pressure system driving the pressure plate to move up and down.

[0007] A further aspect of the present invention is that: a workbench is fixedly installed at the bottom of the machine body, the mold assembly is installed on the workbench, the mold assembly further includes a base, the cold pressing mold is rotatably installed on the base, and a drive source is fixedly installed inside the workbench, the drive source drives the cold pressing mold to rotate.

[0008] A further aspect of the present invention is that: the feed pipe includes a pipe, a funnel is fixedly installed at the top of the pipe, the bottom end of the pipe extends into the cold pressing tank, and the outer periphery of the bottom end of the pipe is curved so that the outer wall of the bottom end of the pipe matches the curvature of the inner wall of the cold pressing tank.

[0009] A further aspect of the present invention is that: a storage chamber is installed inside the funnel, and extension plates are installed at the four corners of the bottom of the storage chamber. The storage chamber is fixedly connected to the top of the pipe through the extension plates. The raw material in the funnel flows into the pipe through the gap formed between the four extension plates and the top of the pipe and the bottom of the storage chamber. The scraping component is placed inside the storage chamber and moves into the pipe through the extension plates.

[0010] A further aspect of the present invention is that the feeding device further includes an adjustment component, the adjustment component includes a hydraulic cylinder, a linear track is fixedly installed on the worktable, an operating table is fixedly installed on the linear track via an electric slide, the hydraulic cylinder is fixedly installed on the operating table, and the output end of the hydraulic cylinder is fixedly connected to a pipeline to drive the pipeline to move up and down.

[0011] A further aspect of the present invention is that: a mounting base is fixedly connected to the operating table, a hopper is provided on the top of the mounting base, servo cylinders are fixedly installed on both sides of the bottom of the hopper, and the discharge end of the hopper is located at the top of the funnel.

[0012] A further aspect of the present invention is that: the driving component includes two rotating rods, which are respectively disposed on both sides of the top of the flexible plate. The rotating rods are rotatably connected to the flexible plate through bearing seats. Elastic rollers are fixedly connected to both ends of the rotating rods. The elastic rollers are in contact with the pipe and the inner wall of the storage compartment. A movable rod is also rotatably mounted on the top of the flexible plate through bearing seats. The movable rod and the two rotating rods are provided with toothed grooves on their outer periphery. A toothed belt that meshes with the toothed grooves is sleeved on the outer periphery of the movable rod and the rotating rod. A micro DC motor is fixedly mounted on the top of the flexible plate. The output end of the micro DC motor is fixedly connected to one end of the movable rod.

[0013] A further aspect of the present invention is that a crushing assembly is provided at the bottom of the pipe, the crushing assembly crushes the lumpy raw material inside the pipe, and at the same time, the crushing assembly flattens the raw material in the cold pressing tank.

[0014] A further aspect of the present invention is that: the rolling assembly includes two rolling rollers, one end of the two rolling rollers is rotatably mounted at the bottom of the pipe via bearings, an inner cavity is opened in the side wall of the pipe, a plurality of connecting shafts are rotatably connected in the inner cavity, a transmission belt is sleeved on the plurality of connecting shafts, a servo motor is fixedly installed outside the pipe, the output end of the servo motor is fixedly connected to one of the connecting shafts, and one end of the two rolling rollers is fixedly connected to the other two connecting shafts.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation between the flexible plate and the driving component, the driving component drives the flexible plate to reciprocate within the pipe. When raw materials are poured into the cold pressing tank, the scraping component is located in the storage chamber, ensuring the pipe remains unobstructed. After the raw materials are delivered, the driving component moves the flexible plate from the top to the bottom of the pipe. Due to the flexible material properties of the flexible plate, the obstruction encountered at pipe bends does not affect its movement. By fitting the outer periphery of the flexible plate against the inner wall of the pipe, the flexible plate scrapes off the raw materials adhering to the inner wall of the pipe and causes them to fall into the cold pressing tank, thus cleaning the inner wall of the pipe. This prevents raw materials from adhering to the inner wall of the pipe, which would result in insufficient raw materials entering the mold. This solves the problem of raw materials adhering to the inner wall of the feed pipe during diamond saw blade processing, which is difficult to clean using conventional vibration methods.

[0016] By setting up the crushing assembly, the raw material in the pipeline passes through two crushing rollers during its transport into the cold pressing tank. The two rotating rollers crush the agglomerated parts of the raw material. Because the agglomerated raw material has high internal porosity and tightly aggregated particles, and a large density difference with the surrounding loose raw material, the agglomerated areas are difficult to compact during cold pressing due to their high hardness. This easily leads to the formation of pores, looseness, and slag inclusions inside the billet. On the other hand, the loose areas are subjected to excessive pressure, resulting in local stress concentration in the billet. After sintering, these defects will develop into microcracks, and the cutting head is prone to breakage and tooth loss at the cracks during cutting. The crushing assembly prevents the problem of raw material agglomeration from entering the cold pressing tank.

[0017] The rolling rollers in the rolling assembly are used to roll and flatten the raw material in the cold pressing tank. Since the raw material is transported to the cold pressing tank via pipelines, it forms a pile that is higher in the middle and lower on both sides upon entering the tank, resulting in an uneven surface. Because the core of cold pressing is to use pressure to tightly bind powder particles, this uneven surface indicates differences in the thickness of the raw material within the tank. Under the same cold pressing pressure, areas with thicker raw material experience insufficient pressure transmission, and the gaps between powder particles cannot be fully squeezed out, resulting in low density in the green body. During sintering, this can easily lead to porosity and looseness due to excessive shrinkage. Conversely, areas with thinner raw material experience excessive pressure concentration, which may cause particle breakage or localized stress concentration. After sintering, this can easily lead to microcracks and warping deformation, resulting in an uneven internal structure of the final cutter head. During cutting, stress cannot be evenly distributed, making it prone to edge chipping and breakage. Therefore, the rolling rollers are used to prevent the uneven surface of the raw material in the cold pressing tank. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 3 This is a front view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the structure of the raw materials entering the cold pressing tank in the present invention, forming a pile; Figure 5 For the present invention Figure 4 Schematic diagram of the structure of section A; Figure 6 This is a schematic diagram of the feeding device structure of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of section B in the middle; Figure 8 This is a schematic diagram of the scraping and crushing components of the present invention; Figure 9 For the present invention Figure 8Schematic diagram of the C-section structure; Figure 10 For the present invention Figure 8 Schematic diagram of the structure of section D.

[0019] In the diagram: 100, Hydraulic press; 101, Pressure plate; 102, Annular pressure plate; 103, Machine body; 104, Hydraulic pressure system; 105, Workbench; 200, Mold assembly; 201, Cold pressing mold; 202, Cold pressing tank; 203, Base; 204, Drive source; 300, Saw blade base; 400, Feeding device; 410, Feed pipe; 411, Pipeline; 412, Funnel; 413, Storage bin; 414, Extension plate; 420, Scraping assembly; 421, Flexible... Plate; 422, Drive component; 4221, Rotating rod; 4222, Elastic roller; 4223, Movable rod; 4224, Toothed groove; 4225, Toothed belt; 4226, Miniature DC motor; 430, Adjustment component; 431, Hydraulic cylinder; 432, Linear track; 433, Electric slide table; 434, Operating table; 435, Hopper; 436, Servo cylinder; 500, Compactor assembly; 501, Compactor roller; 502, Connecting shaft; 503, Transmission belt; 504, Servo motor. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Example 1

[0022] like Figures 1 to 4 As shown, the embodiment of the present invention provides a diamond saw blade cold pressing processing device, including a hydraulic press 100, a mold assembly 200 installed on the hydraulic press 100, a saw blade base 300 placed inside the mold assembly 200, and a feeding device 400 provided on one side of the mold assembly 200. The hydraulic press 100 includes a pressure plate 101, and an annular pressure plate 102 is fixedly installed at the bottom of the pressure plate 101; The mold assembly 200 includes a cold pressing mold 201, on which a cold pressing groove 202 is provided, and the saw blade base 300 is placed in the center of the cold pressing groove 202; The feeding device 400 includes a feeding pipe 410 and a scraping component 420. One end of the feeding pipe 410 extends into the cold pressing tank 202, and the scraping component 420 is disposed inside the feeding pipe 410. The scraping assembly 420 includes a flexible plate 421 and a drive member 422. The flexible plate 421 is attached to the inner wall of the feed tube 410 around its perimeter, and the drive member 422 drives the flexible plate 421 to move within the feed tube 410.

[0023] The working principle of the above-mentioned diamond saw blade cold pressing device is as follows: The saw blade base 300 is placed in the center of the cold pressing tank 202, and the saw blade base 300 is fixed by a corresponding pressing die. Then, the die assembly 200 drives the cold pressing die 201 to rotate slowly. At the same time, the external feeding device provides a certain amount of raw material to the feeding device 400. The raw material is transported into the cold pressing tank 202 through the feeding pipe 410. Through the rotation of the cold pressing die 201, the raw material is evenly transported into the cold pressing tank 202. After completion, the drive unit 422 drives the flexible plate 421 to move inside the feed pipe 410. The flexible plate 421 is attached to the inner wall of the feed pipe 410, so that the end of the flexible plate 421 scrapes the inner wall of the feed pipe 410, scraping off the raw material adhering to the inner wall of the feed pipe 410 and letting it enter the cold pressing tank 202. Then the pipe 411 is separated from the cold pressing tank 202, and the raw material in the cold pressing tank 202 is cold pressed by the annular pressure plate 102 at the bottom of the pressure plate 101.

[0024] In the traditional cold pressing process of diamond saw blades, the method to prevent raw materials from adhering to the pipe wall during processing is to use a corresponding vibration device to vibrate the pipe 411, causing the raw materials on the inner wall of the pipe 411 to vibrate and fall off. However, due to the stickiness of the organic binder in the raw materials, it is difficult to completely remove the raw materials from the inner wall of the pipe 411. At the same time, the bottom end of the pipe 411 is located in the cold pressing groove 202. When the pipe 411 vibrates, it is easy for the pipe 411 to come into contact with the inner wall of the cold pressing groove 202. Since the cold pressing mold 201 is in a rotating state, the pipe 411 and the inner wall of the cold pressing groove 202 are in contact and easily rub against each other, thereby damaging the pipe 411 and the cooling mold. In contrast, this application, by setting a flexible plate 421 that fits against the inner wall of the pipe 411 inside the feed pipe 410, ensures that the flexible plate 421 is located in the storage chamber 413 during the transportation of raw materials into the cold pressing tank 202, thus preventing the flexible plate 421 from clogging the pipe 411. After the raw material transportation is completed, the driving component 422 drives the flexible plate 421 to reciprocate within the pipe 411, so that the flexible plate 421 moves from the top end of the pipe 411 to the bottom end, thus clogging the pipe 411. The raw material adhering to the wall is scraped off and allowed to enter the cold pressing tank 202. After scraping, the drive component 422 moves the flexible plate 421 to the storage chamber 413 for repositioning. The flexible plate 421, which is attached to the inner wall of the pipe 411, completely removes the raw material from the inner wall of the pipe 411 during the movement, preventing the remaining raw material from adhering to the inner wall of the pipe 411. This solves the problem that the raw material processed by the diamond saw blade head adheres to the inner wall of the feed pipe 410 and is difficult to clean by conventional vibration methods.

[0025] See also Figures 2 to 4As shown, in order to achieve a uniform distribution of raw materials within the cold pressing tank 202, the hydraulic press 100 also includes a machine body 103 and a hydraulic pressure system 104. The hydraulic pressure system 104 is mounted on the machine body 103 and drives the pressure plate 101 to move up and down. A worktable 105 is fixedly mounted at the bottom of the machine body 103, and a mold assembly 200 is mounted on the worktable 105. The mold assembly 200 also includes a base 203, and the cold pressing mold 201 is rotatably mounted on the base 203. A drive source 204 is fixedly mounted inside the worktable 105, and the drive source 204 drives the cold pressing mold 201 to rotate. The drive source 204 is preferably a drive motor. When the tail end of the feed pipe 410 moves into the cold pressing tank 202, the raw materials are transported into the cold pressing tank 202 through the feed pipe 410. The saw blade base 300 is installed in the center of the cold pressing trough 202, and is fixed and pressed by a corresponding pressing mold. Therefore, the area where the raw material is placed in the cold pressing trough 202 is annular. When the feed pipe 410 transports the raw material into the cold pressing trough 202, the drive motor drives the cold pressing trough 202 to rotate at a constant speed on the base 203. This ensures that the raw material is evenly spread in the cold pressing trough 202 during the transport process, preventing uneven distribution of the raw material. When the raw material is unevenly spread in the cold pressing trough 202, the thickness difference of the raw material in the cold pressing trough 202 is large. Under the same cold pressing pressure, the powder in the area where the raw material is too thick cannot be fully compacted, leaving a large number of pores inside the blank. In the area where the raw material is too thin, the pressure is too concentrated, resulting in particle breakage or local stress concentration. The final blank exhibits an uneven structure, leading to cracking and warping. At the same time, uneven distribution of raw materials causes local overload on the mold, especially in areas where the raw material is too thick, which will generate continuous high-pressure impact on the inner wall of the mold cavity. After long-term use, the mold is prone to local dents, scratches, or even chipping. Therefore, by rotating the cold pressing groove 202, the raw material is evenly spread in the cold pressing groove 202.

[0026] See also Figures 5 to 7As shown, to prevent the raw material from colliding with the cold pressing tank 202 during transportation and causing it to bounce, the feed pipe 410 includes a pipe 411. A funnel 412 is fixedly installed at the top of the pipe 411, and the bottom end of the pipe 411 extends into the cold pressing tank 202. The outer periphery of the bottom end of the pipe 411 is curved so that the outer wall of the bottom end of the pipe 411 matches the curvature of the inner wall of the cold pressing tank 202. When the bottom end of the pipe 411 is located at the top of the cold pressing tank 202, the distance between the bottom end of the pipe 411 and the bottom of the cold pressing tank 202 is too long. When the raw material is transported from the bottom end of the pipe 411 into the cold pressing tank 202... When the raw material collides with the bottom of the cold pressing tank 202, it bounces and moves away from the cold pressing tank 202, thus reducing the amount of raw material actually entering the cold pressing tank 202. By changing the curvature of the bottom of the feed pipe 410 near the cold pressing tank 202 and the mold, the bottom of the feed pipe 410 extends into the cold pressing tank 202. The raw material is limited by the distance between the feed pipe 410 and the bottom of the cold pressing tank 202, as well as by the obstruction of the molds on both sides and the inner wall of the cold pressing tank 202, thus reducing the amplitude of the bouncing of the raw material and preventing the raw material from bouncing and leaving the cold pressing tank 202.

[0027] See also Figures 6 to 9As shown, in order to clean the inside of the pipe 411, a storage chamber 413 is installed inside the funnel 412. Extension plates 414 are installed at the four corners of the bottom of the storage chamber 413. The storage chamber 413 is fixedly connected to the top of the pipe 411 via the extension plates 414. The raw material in the funnel 412 flows into the pipe 411 through the gaps formed between the four extension plates 414 and the top of the pipe 411 and the bottom of the storage chamber 413. The scraping assembly 420 is placed inside the storage chamber 413 and moves into the pipe 411 via the extension plates 414. The driving component 422 includes two rotating rods 4221, which are respectively located on both sides of the top of the flexible plate 421. 4221 is rotatably connected to the flexible plate 421 via a bearing seat. Elastic rollers 4222 are fixedly connected to both ends of the rotating rod 4221. The elastic rollers 4222 are in contact with the inner wall of the pipe 411 and the storage chamber 413. A movable rod 4223 is also rotatably installed on the top of the flexible plate 421 via a bearing seat. The movable rod 4223 and the two rotating rods 4221 are all provided with toothed grooves 4224 on their outer periphery. A toothed belt 4225 that meshes with the toothed grooves 4224 is sleeved on the outer periphery of the movable rod 4223 and the rotating rod 4221. A micro DC motor 4226 is fixedly installed on the top of the flexible plate 421. The output end of the micro DC motor 4226 is fixedly connected to one end of the movable rod 4223.The cross-section of pipe 411 is rectangular. There is a distance between the bottom of storage chamber 413 and the top of pipe 411, connected by four extension plates 414. When raw material enters funnel 412, it flows into pipe 411 through the four gaps formed between storage chamber 413, pipe 411, and the four extension plates 414. Once the raw material in funnel 412 enters pipe 411 and is transported to cold pressing tank 202, drive component 422 operates. Micro DC motor 4226 drives movable rod 4223 to rotate. Through the meshing connection between movable rod 4223 and the toothed grooves 4224 and toothed belts 4225 on the outside of two rotating rods 4221, the two rotating rods 4221 rotate, thereby driving two pairs of elastic rollers 4222 to rotate. Pressure exists between the elastic rollers 4222 and the inner wall of pipe 411, causing the elastic rollers 4222 to rotate. The inner walls are tightly fitted together. The rotation of the elastic rollers 4222 drives the flexible plate 421 forward. Due to the material properties of the flexible plate 421 itself, it undergoes elastic deformation when passing through the bends in the pipe 411. This movement of the flexible plate 421 scrapes away the raw material adhering to the inner wall of the pipe 411, preventing insufficient material from entering the mold. This solves the problem of raw material adhering to the inner wall of the feed pipe 410 after processing by diamond saw blades, which is difficult to clean using conventional vibration methods. Simultaneously, when the elastic rollers 4222 move from the storage bin 413 into the pipe 411, the four rollers respectively adhere to one side of the extension plate 414 at the four corners of the storage bin 413, preventing the flexible plate 421 from being unable to move due to a lack of contact surface during transportation.

[0028] See also Figure 6As shown, in order to control the movement of the pipe 411, the feeding device 400 also includes an adjusting component 430. The adjusting component 430 includes a hydraulic cylinder 431. A linear track 432 is fixedly installed on the worktable 105. An operating table 434 is fixedly installed on the linear track 432 via an electric slide table 433. The hydraulic cylinder 431 is fixedly installed on the operating table 434. The output end of the hydraulic cylinder 431 is fixedly connected to the pipe 411, driving the pipe 411 to move up and down. The operating table 434 is fixedly connected to... A mounting base is provided, with a hopper 435 on top of the mounting base. Servo cylinders 436 are fixedly mounted on both sides of the bottom of the hopper 435. The discharge end of the hopper 435 is located at the top of the funnel 412. Since the bottom end of the pipe 411 extends into the cold pressing tank 202, when the raw material is transported into the cold pressing tank 202, the pipe 411 needs to be moved upwards slowly to prevent the bottom end of the pipe 411 from contacting the top surface of the raw material in the cold pressing tank 202, which would prevent the raw material in the pipe 411 from entering the cold pressing tank 202. Therefore, a hydraulic cylinder 431 is installed at the bottom of the pipe 411 to adjust its height. This controls the pipe 411's entry and exit from the cold pressing tank 202 while simultaneously adjusting the distance between the bottom of the pipe 411 and the top surface of the raw material in the cold pressing tank 202. To prevent collision between the pressure plate 101 and the pipe 411, a linear track 432 and an electric slide 433 are installed to move the operating table 434 back and forth. When the cold pressing tank 202 is full of raw material, the hydraulic cylinder 431 drives the pipe... The pipe 411 moves upward and away from the cold pressing tank 202. At the same time, the electric slide table 433 drives the operating table 434 to move away from the cold pressing tank 202, so that the pipe 411 is removed from the range of the pressure plate 101, thereby facilitating the pressure plate 101 to perform cold pressing operation on the raw material. At the same time, a certain amount of raw material is placed in the feed hopper 435. After the previous cold pressing operation is completed, the servo cylinder 436 drives the discharge end of the hopper 435 to move downward, thereby transporting the raw material in the hopper 435 into the funnel 412.

[0029] Example 2

[0030] like Figures 8 to 10As shown, because some raw material adheres to the inner wall of pipe 411, when the scraping component 420 scrapes it off and transports it to the cold pressing tank 202, there will be more raw material at the bottom of pipe 411 in the cold pressing tank 202 than at other locations. This results in an uneven surface of the raw material in the cold pressing tank 202, leading to uneven pressure distribution on the raw material under the same pressure. This causes quality problems in the formed cutting head. Simultaneously, the raw material scraped by the scraping component 420 may agglomerate into clumps. These clumps enter the cold pressing tank 202, similarly causing uneven pressure distribution. Therefore, a crushing component 50 is installed at the bottom of pipe 411. 0. The crushing assembly 500 crushes the agglomerated raw material in the pipe 411 and flattens the raw material in the cold pressing tank 202. The crushing assembly 500 includes two crushing rollers 501. One end of the two crushing rollers 501 is rotatably mounted on the bottom of the pipe 411 via bearings. An inner cavity is opened in the side wall of the pipe 411. Multiple connecting shafts 502 are rotatably connected in the inner cavity. A transmission belt 503 is sleeved on the multiple connecting shafts 502. A servo motor 504 is fixedly installed on the outside of the pipe 411. The output end of the servo motor 504 is fixedly connected to one of the connecting shafts 502. One end of the two crushing rollers 501 is fixedly connected to the other two connecting shafts 502. When the bottom of pipe 411 enters the cold pressing tank 202 and reaches the designated position, servo motor 504 drives one of the connecting shafts 502 to rotate. Through the connection between the transmission belt 503 and the three connecting shafts 502, the other two connecting shafts 502 are driven to rotate, which in turn drives the two pressing rollers 501 to rotate. Since the raw material is transported into the cold pressing tank 202 through pipe 411, when the raw material enters the cold pressing tank 202, it will form a pile with a high center and low sides, which will cause the surface of the raw material in the cold pressing tank 202 to be uneven. At the same time, after the raw material is transported and scraped by the scraping device, some raw material will accumulate on the raw material at the bottom of pipe 411, further causing the surface of the raw material in the cold pressing tank 202 to be uneven. At this time, through the setting of the two pressing rollers 501, during the process of receiving raw material and rotating the cold pressing tank 202, the pressing rollers 501 and the cold pressing tank 202 are rotated. The top surface of the raw material in the cold pressing tank 202 is pressed against the material, and the top surface of the raw material in the cold pressing tank 202 is rolled and crushed to flatten the surface of the raw material in the cold pressing tank 202. At the same time, during the scraping process of the scraping device scraping the raw material in the pipe 411, the cold pressing tank 202 and the rolling roller 501 continue to rotate, so as to continuously crush and flatten the top surface of the raw material in the cold pressing tank 202, preventing the material thickness from being different in the cold pressing tank 202. Under the same cold pressing pressure, the pressure transmission is insufficient in the area where the raw material is thicker, and the gaps between powder particles cannot be fully squeezed and eliminated, resulting in low density of the green body. During sintering, it is easy to produce pores and looseness due to excessive shrinkage. In the area where the raw material is thinner, the pressure is excessively concentrated, which may lead to particle breakage or local stress concentration. After sintering, micro-cracks and warping deformation are easy to occur. The internal structure of the final formed cutter head is uneven, and the stress cannot be evenly distributed during cutting, which easily leads to chipping and breakage. During the transport of raw materials into the cold pressing tank 202, the ambient temperature and static electricity generated by friction on the inner wall of the pipe 411 can cause some raw materials to agglomerate. When the lumpy materials transported and scraped by the scraping component 420 enter the raw materials in the cold pressing tank 202, it will cause a difference in density within the raw materials. Due to the high porosity and tight particle aggregation of the agglomerated raw materials, the density difference with the surrounding loose raw materials is large. Therefore, during cold pressing, the agglomerated areas are difficult to compact due to their high hardness, which easily forms pores, looseness, and slag inclusions inside the billet. On the other hand, the loose areas are subjected to excessive pressure, which leads to local stress concentration in the billet. After sintering, these defects will develop into microcracks. During cutting, the cutting head is prone to breakage and tooth loss at the cracks. Therefore, by setting two rolling rollers 501, when the agglomerated raw materials move to the rolling rollers 501, the rotation of the two rolling rollers 501 crushes the agglomerated raw materials, thereby preventing the raw materials from agglomerating and entering the cold pressing tank 202.

[0031] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A cold pressing device for diamond saw blades, characterized in that, Includes a hydraulic press, on which a mold assembly is installed, a saw blade base is placed inside the mold assembly, and a feeding device is provided on one side of the mold assembly; The hydraulic press includes a pressure plate, and an annular pressure plate is fixedly installed at the bottom of the pressure plate; The mold assembly includes a cold pressing mold, on which a cold pressing groove is formed, and the saw blade base is placed in the center of the cold pressing groove. The feeding device includes a feeding pipe and a scraping assembly. One end of the feeding pipe extends into the cold pressing tank, and the scraping assembly is disposed inside the feeding pipe. The scraping assembly includes a flexible plate and a driving component. The flexible plate is attached to the inner wall of the feed tube around its perimeter, and the driving component drives the flexible plate to move within the feed tube.

2. The diamond saw blade cold pressing device according to claim 1, characterized in that, The hydraulic press also includes a machine body and a hydraulic pressure system. The hydraulic pressure system is installed on the machine body and drives the pressure plate to move up and down.

3. The diamond saw blade cold pressing device according to claim 2, characterized in that, A workbench is fixedly installed at the bottom of the machine body, the mold assembly is installed on the workbench, the mold assembly also includes a base, the cold pressing mold is rotatably installed on the base, and a drive source is fixedly installed inside the workbench, the drive source drives the cold pressing mold to rotate.

4. The diamond saw blade cold pressing device according to claim 3, characterized in that, The feed pipe includes a pipe with a funnel fixedly installed at the top end of the pipe and the bottom end of the pipe extending into the cold pressing tank. The outer periphery of the bottom end of the pipe is curved so that the outer wall of the bottom end of the pipe matches the curvature of the inner wall of the cold pressing tank.

5. The diamond saw blade cold pressing device according to claim 4, characterized in that, The funnel is equipped with a storage chamber, and extension plates are installed at the four corners of the bottom of the storage chamber. The storage chamber is fixedly connected to the top of the pipe through the extension plates. The raw material in the funnel flows into the pipe through the gap formed between the four extension plates and the top of the pipe and the bottom of the storage chamber. The scraping component is placed in the storage chamber and moves into the pipe through the extension plates.

6. The diamond saw blade cold pressing device according to claim 5, characterized in that, The feeding device also includes an adjustment component, which includes a hydraulic cylinder. A linear track is fixedly installed on the worktable, and an operating table is fixedly installed on the linear track via an electric slide. The hydraulic cylinder is fixedly installed on the operating table, and the output end of the hydraulic cylinder is fixedly connected to a pipeline to drive the pipeline to move up and down.

7. The diamond saw blade cold pressing device according to claim 6, characterized in that, A mounting base is fixedly connected to the operating platform. A hopper is provided on the top of the mounting base. Servo cylinders are fixedly installed on both sides of the bottom of the hopper. The discharge end of the hopper is located at the top of the funnel.

8. The diamond saw blade cold pressing device according to claim 7, characterized in that, The driving component includes two rotating rods, which are respectively located on both sides of the top of the flexible plate. The rotating rods are rotatably connected to the flexible plate through bearing seats. Elastic rollers are fixedly connected to both ends of the rotating rods. The elastic rollers are in contact with the pipe and the inner wall of the storage compartment. A movable rod is also rotatably installed on the top of the flexible plate through bearing seats. The movable rod and the two rotating rods are all provided with toothed grooves on their outer circumferences. Toothed belts that mesh with the toothed grooves are sleeved on the outer circumferences of the movable rod and the rotating rods. A micro DC motor is fixedly installed on the top of the flexible plate. The output end of the micro DC motor is fixedly connected to one end of the movable rod.

9. A cold pressing device for diamond saw blades according to any one of claims 1-8, characterized in that, A crushing assembly is installed at the bottom of the pipeline. The crushing assembly crushes the lumpy raw materials inside the pipeline and flattens the raw materials in the cold pressing tank.

10. A cold pressing device for diamond saw blades according to claim 9, characterized in that, The rolling assembly includes two rolling rollers. One end of each rolling roller is rotatably mounted at the bottom of the pipe via a bearing. An inner cavity is opened in the side wall of the pipe. Multiple connecting shafts are rotatably connected within the inner cavity. A transmission belt is fitted over the multiple connecting shafts. A servo motor is fixedly installed outside the pipe. The output end of the servo motor is fixedly connected to one of the connecting shafts. One end of each rolling roller is fixedly connected to the other two connecting shafts.

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