High-speed rotating press

Abstract

The invention discloses a high-speed rotary press which comprises a machine table, a top plate, a support arm, a main shaft, a base, an upper rotary table, a punching die disc, a lower rotary table, a plurality of upper punching rods, a plurality of lower punching rods, a plurality of female dies, a press rotation driving mechanism, an upper cam pressing rod mechanism, a lower cam pressing rod mechanism, a pressure sensing device, a powder feeding and stirring mechanism, a defective product sorting and blocking part and a material distributing groove. The upper rotary table, the stamping die disc and the lower rotary table are sequentially connected from top to bottom and rotationally connected with the spindle, the press rotation driving mechanism can enable the output portion of the press rotation driving mechanism to drive the lower rotary table to rotate, and therefore the upper rotary table and the stamping die disc are driven to rotate at a high speed relative to the spindle along with the lower rotary table. A series of operations such as automatic powder feeding, automatic stirring and powder filling, automatic pressing rod feeding and discharging and powder forming and pressing can be achieved, and the production efficiency and the finished product quality are improved. In addition, the die assembly pressure is detected in real time through the pressure sensing device, automatic defective product sorting operation is achieved in cooperation with the defective product sorting and blocking part, and the forming quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of powder molding presses, and more specifically, to a high-speed rotary press. Background Art

[0002] A powder molding press is a device for pressing metal powder or ceramic powder into a product of a certain fixed shape (such as a block). However, existing powder molding presses generally use ordinary upper and lower molds to cooperate for up and down pressing. Usually, only a single pressing can be performed after one powder filling. Since processes such as powder filling, pressing, and demolding need to be carried out step by step, and only one molded product can be pressed each time, the pressing speed is relatively slow, making it difficult to meet the requirements of large-scale continuous production. There is a lack of a device for continuous powder molding pressing using a high-speed rotation method. In addition, traditional powder molding presses usually use manual or a feeding pipe for powder filling. Due to the poor fluidity of the powder material, it is easy to cause uneven powder filling and defective products. Moreover, the press itself lacks an automatic defective product sorting mechanism and can only rely on manual discharging and then sorting defective products, resulting in a long production cycle and unable to ensure product consistency and finished product quality. Summary of the Invention

[0003] An object of the present invention is to overcome the above-mentioned defects in the prior art and provide a high-speed rotary press capable of realizing a series of operations such as automatic powder feeding, automatic stirring and filling of powder, automatic up and down pressing rods, powder molding pressing, and automatic discharging of defective products.

[0004] To achieve the above-mentioned purpose, the present invention provides a high-speed rotary press, including a machine platform, a top plate, a support arm, a main shaft, a base, an upper turntable, a die disk, a lower turntable, a plurality of upper punches, a plurality of lower punches, a plurality of master molds, a press rotation drive mechanism, an upper cam pressure rod mechanism, a lower cam pressure rod mechanism, a pressure sensing device, a powder feeding and stirring mechanism, a defective product sorting blocking member, and a material dividing trough. The main shaft is longitudinally penetrated between the machine platform and the top plate through the base, and the upper turntable, the die disk and the lower turntable are sequentially connected from top to bottom and are rotatably connected to the main shaft. The press rotation drive mechanism is installed on the support arm and can enable its output part to drive the lower turntable to rotate, thereby driving the upper turntable and the die disk to rotate relative to the main shaft along with the lower turntable. The upper punch and the lower punch are each movably inserted in the bushings of the upper turntable and the lower turntable and are arranged in a ring shape. The master molds correspond to the insertion of the upper punch and the lower punch. The cam pressure rod mechanism is installed in the top plate and its pressure rod part can abut against the upper punch rod rotated below it. The lower cam pressure rod mechanism is installed on the machine platform through a pressure sensor device and its pressure rod part can abut against the lower punch rod rotated above it, thereby realizing the simultaneous insertion of the upper punch rod and the lower punch rod into the mother mold to press and form the powder. The defective product sorting blocking member is installed on the die disk and is connected to the material dividing groove arranged downward at the edge of the die disk.

[0005] Compared with the prior art, the present invention has the following beneficial effects:

[0006] 1. The invention has a novel structure and a reasonable design. The rotary drive mechanism enables the press to achieve high-speed and continuous rotation during the molding process, and can realize a series of operations such as automatic powder feeding, automatic stirring and filling of powder, automatic upper and lower pressing rods, powder molding and pressing, and automatic discharge of defective products. The operation is simple and convenient, and multiple pressing moldings can be completed continuously. The operation is stable and reliable, the speed is fast, and the production efficiency and the quality of the finished product are improved.

[0007] 2. The present invention adopts a pressure sensing device to detect the clamping pressure of the upper punch and the lower punch in real time, and can convert the detected pressure value into an electrical signal output. The external control system compares and analyzes the received electrical signal with a preset pressure range. If the detected pressure value exceeds or is less than the preset range, it is determined to be a defective product. The air supply device connected to the defective product sorting block is connected to the air hole, and the determined defective products can be blown into the defective product chute for unloading and collection, thereby realizing rapid defective product sorting operation and further ensuring the consistency and quality of the finished product.

[0008] 3. The powder feeding and stirring mechanism of the present invention uses two stirring impellers to rotate simultaneously, which can stir the powder in the powder box and evenly fill it into the molding cavity of the master mold, avoiding the problem of insufficient filling in the molding cavity of the master mold and the occurrence of poor phenomena such as powder agglomeration in the powder box, improving the powder filling effect and powder filling efficiency.

[0009] 4. The upper cam pressing rod mechanism and the lower cam pressing rod mechanism of the present invention can respectively convert the rotational motion of their respective eccentric shafts into the radial displacement actions of the cams, realizing the automatic up and down adjustment of the positions of their respective corresponding upper cams and lower cams. According to the pressing pressure requirements of different products, the initial positions of the upper cam and the lower cam can be adjusted. During the pressing process, the downward pressing depth acting on the upper punch rod and the lower punch rod will change accordingly, so as to realize the adjustment of the pressure and time for pressing different products, and different thickness of molded products can be produced without replacing the master mold, with strong versatility.

[0010] 5. The present invention also adopts an automatic feeding and discharging mechanism. The feeding and discharging lifting drive motor can drive the feeding and discharging lead screw to rotate and be converted into the up and down movement of the feeding and discharging slide rail through the feeding and discharging lifting block. Further, the height of the feeding and discharging slide rail in the lower punch rod guide rail can be adjusted to realize the precise automatic control of the position of the lower punch rod in the molding cavity of the master mold, so as to achieve the purpose of precisely adjusting the powder filling amount in the molding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is a schematic structural diagram of a high-speed rotary press provided by an embodiment of the present invention;

[0013] Figure 2 It is a schematic internal structure diagram of a high-speed rotary press provided by an embodiment of the present invention;

[0014] Figure 3 It is a schematic structural diagram of an upper punch rod guide rail provided by an embodiment of the present invention;

[0015] Figure 4 It is a schematic structural diagram of an upper punch rod provided by an embodiment of the present invention;

[0016] Figure 5 It is a schematic structural diagram of a lower punch rod provided by an embodiment of the present invention;

[0017] Figure 6It is a partial structural schematic diagram of a high-speed rotary press provided by an embodiment of the present invention;

[0018] Figure 7 It is a partial exploded schematic diagram of a high-speed rotary press provided by an embodiment of the present invention;

[0019] Figure 8 It is an exploded schematic diagram of a powder feeding and stirring mechanism provided by an embodiment of the present invention;

[0020] Figure 9 It is a partial enlarged schematic diagram of a powder feeding and stirring mechanism provided by an embodiment of the present invention;

[0021] Figure 10 It is an exploded schematic diagram of an upper cam pressure rod mechanism provided by an embodiment of the present invention;

[0022] Figure 11 It is an exploded schematic diagram of a lower cam pressure rod mechanism provided by an embodiment of the present invention;

[0023] Figure 12 It is an enlarged schematic diagram of a good product sorting baffle and a material distribution groove provided by an embodiment of the present invention. Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1 , an embodiment of the present invention provides a high-speed rotary press, including a machine table 1, a top plate 11, a support arm 12, a main shaft 13, a base 14, an upper turntable 2, a die plate 3, a lower turntable 4, a plurality of upper punch rods 21, a plurality of lower punch rods 41, a plurality of female dies 31, a press rotation driving mechanism 5, an upper cam pressure rod mechanism 6, a lower cam pressure rod mechanism 7, a pressure sensing device 70, a powder feeding and stirring mechanism 8, a defective product sorting baffle 9, a material distribution groove 90 and other components. Each component of this embodiment will be described in detail below with reference to the accompanying drawings.

[0026] As Figure 1As shown in the figure, the top plate 11 can be fixedly arranged above the machine table 1 through the columns 111. The main shaft 13 can be longitudinally arranged between the machine table 1 and the top plate 11 through the base 14. The upper turntable 2, the die pressing plate 3 and the lower turntable 4 are connected in sequence from top to bottom and are rotatably connected to the main shaft 13. The press rotation driving mechanism 5 is installed on the support arm 12 and its output part can drive the lower turntable 4 to rotate, so as to drive the upper turntable 2 and the die pressing plate 3 to rotate relative to the main shaft 13 together with the lower turntable 4. The powder feeding and stirring mechanism 8 can be installed on the top plate 11 and its powder feeding part is communicated with the female die 31 of the die pressing plate 3.

[0027] As Figure 2 shown in the figure, the press rotation driving mechanism 5 can include a rotation driving motor 51, a motor pulley 52, a worm pulley 53, a transmission belt 54, a transmission worm 55, a transmission worm gear 56 and a balance handwheel 57. The rotation driving motor 51 is fixedly installed inside the machine table 1. The output shaft of the rotation driving motor 51 is in transmission connection with the motor pulley 52 and drives it to rotate. The two ends of the transmission worm 55 are rotatably arranged horizontally on the support arm 12. The transmission worm gear 56 is installed inside the lower turntable 4 and extends out of one side of its outer edge. The tooth positions of the transmission worm 55 and the transmission worm gear 56 are meshed with each other. The worm pulley 53 is fixedly connected to the end of the transmission worm 55 extending out of the support arm 12 and is located above the motor pulley 52. The transmission belt 54 is sleeved between the motor pulley 52 and the worm pulley 53. The balance handwheel 57 is fixedly connected to the other end of the transmission worm 55 extending out of the support arm 12.

[0028] During specific implementation, the rotation driving motor 51 can drive the motor pulley 52 to rotate and synchronously drive the worm pulley 53 and the transmission worm gear 56 to rotate through the transmission belt 54, so as to drive the lower turntable 4 to rotate (counterclockwise). In addition, rotating the balance handwheel 57 can balance the inertia generated during the transmission process, reduce vibration and improve the overall stability.

[0029] As Figure 4 shown in the figure, the upper punch rods 21 can be respectively movably inserted into the bushings of the upper turntable 2 and are arranged in a ring distribution. Each upper punch rod 21 is respectively provided with a rolling member 211 (such as a roller or a bearing, etc.). An upper punch rod guide rail 20 for the rolling member 211 of the upper punch rod 21 to make a circular motion around the main shaft 13 and guide the up and down movement of the upper punch rod 21 is fixedly arranged in the middle groove of the upper turntable 2. The upper punch rod 21 can move up and down according to the up and down slope positions of the upper punch rod guide rail 20, so as to be able to insert downward into the female die 31 or move upward away from the female die 31. The upper cam and lever mechanism 6 is installed on the top plate 11 and its lever part can abut against the upper punch rod 21 rotating below it.

[0030] As Figure 3As shown, the upper punch rod guide rail 20 may include a guide rail main body 201. An ascending track section 202, an upper horizontal track section 203, a descending track section 204, and a lower horizontal track section 205 are successively arranged around the outer periphery of the guide rail main body 201. The top surface of the upper horizontal track section 203 is flush with the top surface of the guide rail main body 201. The lower horizontal track section 205 is connected between the ascending track section and the descending track section 204.

[0031] As Figure 10 As shown, two upper cam press rod mechanisms 6 may be provided and are successively arranged downward along the rotation direction of the upper punch rod 21 on the bottom surface of the top plate 11. Each of the upper cam press rod mechanisms 6 includes an upper cam seat 61, an upper worm mounting seat 62, an upper pressure regulating worm 63, an upper cam driving motor 64, an upper eccentric shaft 65, an upper cam 66, and an upper eccentric shaft gear 68. The top surface of the upper cam seat 61 is fixedly connected to the bottom of the top plate 11 respectively. The upper worm mounting seat 62 is fixedly connected to the front of the upper cam seat 61. Both ends of the upper pressure regulating worm 63 are rotatably arranged between the two inner side walls of the upper worm mounting seat 62. The output shaft of the upper cam driving motor 64 is in transmission connection with one end of the upper pressure regulating worm 63 and can drive it to rotate. Both ends of the upper eccentric shaft 65 are rotatably inserted through the front and back surfaces of the upper cam seat 61. The upper cam 66 is fixedly sleeved on the upper eccentric shaft 65 and protrudes from the upper cam seat 61. The upper eccentric shaft gear 68 is fixedly connected to the front of the upper eccentric shaft 65 protruding from the upper cam seat 61. The tooth positions of the upper eccentric shaft gear 68 are meshed with the tooth positions of the upper pressure regulating worm 63.

[0032] Among them, the upper cam press rod mechanism 6 may further include two upper mounting bushings 69 and an upper pressing block 691. The two upper mounting bushings 69 are sleeved on the upper eccentric shaft 65 and are located in front of and behind the upper cam 66. The two upper mounting bushings 69 are mounted on the bottom of the upper cam seat 61 through the upper pressing block 691. The two upper mounting bushings 69 can be in sliding contact with the arc-shaped grooves of their respective corresponding upper pressing blocks 691, so as to further support the upper cam 66.

[0033] As Figure 5 As shown, the lower punch rods 41 can each be movably inserted into the bushings of the lower turntable 4 and are arranged in a circular array. A lower punch rod guide rail 40 for the bottom of the lower punch rod 41 to make a circular motion around the main shaft 13 as the center and guide the up and down movement of the lower punch rod 41 is installed on the base 14. The lower cam press rod mechanism 7 is installed on the machine table 1 through a pressure sensing device 70 so that its press rod part can abut against the lower punch rod 41 rotating above it.

[0034] As Figure 6 and Figure 7As shown, the lower punch guide rail 40 may include a push-out slide rail 401, a lead-in slide rail 402, a material adding and subtracting slide rail 403, and a bridge slide rail 404. One end of the push-out slide rail 401 is connected to one end of the lead-in slide rail 402. The periphery of the base 14 is provided with a first slide groove 141 for supporting the push-out slide rail 401 and the lead-in slide rail 402, a second slide groove 142 for supporting the material adding and subtracting slide rail 403, and a third slide groove 143 for docking between the pressure rod parts of the two lower cam pressure rod mechanisms 7. The two ends of the bridge slide rail 404 are respectively placed between the first slide groove 141 and the second slide groove 142 and are connected to the other end of the lead-in slide rail 402 and one end of the material adding and subtracting slide rail 403.

[0035] Among them, one end of the material adding and subtracting slide rail 403 close to the bridge slide rail 404 is tilted downward and is provided with an upward slope 4031, so that the lower punch rod 41 can move smoothly to the contact surface of the material adding and subtracting slide rail 403, and the lower punch rod guide rail 40 guides the up and down movement trajectory of the lower punch rod 41 to complete the actions of adding, pressing and ejecting during the pressing process.

[0036] like Figure 11 As shown, the lower cam pressure rod mechanism 7 can be provided with two and are respectively arranged on the top surface of the machine platform 1 in sequence along the rotation direction of the lower punch 41. The lower cam pressure rod mechanism 7 includes a lower cam seat 71, a lower worm mounting seat 72, a lower pressure regulating worm 73, a lower cam driving motor 74, a lower eccentric shaft 75, a lower cam 76, a lower eccentric shaft gear 78, and a lower mounting bushing 79. The top surfaces of the lower cam seats 71 are respectively fixedly connected to the bottom of the top plate 11, the lower worm mounting seat 72 is fixedly connected to the front side of the lower cam seat 71, and the two ends of the lower pressure regulating worm 73 are rotatably arranged between the two inner side walls of the lower worm mounting seat 72. The output shaft of the lower cam driving motor 74 is connected to the lower eccentric shaft gear 78. One end of the lower pressure-adjusting worm 73 is transmission connected and can drive it to rotate. The two ends of the lower eccentric shaft 75 are rotatably inserted into the front and back surfaces of the lower cam seat 71. The lower cam 76 is fixedly sleeved on the lower eccentric shaft 75 and extends out of the lower cam seat 71. The lower eccentric shaft gear 78 is fixedly connected to the front side of the lower eccentric shaft 75 extending out of the lower cam seat 71. The tooth position of the lower eccentric shaft gear 78 is meshed with the tooth position of the lower pressure-adjusting worm 73. Two lower mounting bushings 79 are provided and are respectively sleeved on the lower eccentric shaft 75 and located at the front and rear of the lower cam 76. The two lower mounting bushings 79 can slide in contact with the corresponding arc grooves on the lower cam seat 71 to achieve further support for the lower cam 76.

[0037] Furthermore, the female molds 31 are installed in the holes of the die plate 3 corresponding to the insertion positions of the upper punch 21 and the lower punch 41 and are arranged in a ring shape, and the middle of each female mold 31 is provided with a forming cavity for inserting the upper punch 21 and the lower punch 41. The ring-shaped arrangement and distribution design realizes multi-station continuous stamping and improves production efficiency.

[0038] In specific implementation, when the lower turntable 4 rotates to the pressing station, the lower punch 41 is inserted into the molding cavity of the mother mold 31, and the upper cam 66 of the upper cam pressure rod mechanism 6 presses the upper punch 21 downward, and at the same time, the lower cam 76 of the lower cam pressure rod mechanism 7 can push the lower punch 41 upward. Under the joint action of the lower punch 41 and the lower punch 41, the product is pressed and formed in the molding cavity of the mother mold 31. After the pressing is completed, the upper punch 21 and the lower punch 41 are inserted into the mother mold 31 at the same time to press and form the powder; thereafter, when the lower punch 41 moves upward along the guide and ejection slide rail 401, the lower punch 41 can eject the pressed product in the molding cavity.

[0039] like Figure 8 and Figure 9 As shown, the powder feeding and stirring mechanism 8 may include a powder box 81, a powder box cover 82, two stirring impellers 83, a stirring drive device 84, a powder feeding barrel 85 and a powder feeding pipe 86. The powder box 81 is located on the top surface of the die disk 3. A material cavity is provided inside the powder box 81. A powder box discharge port 810 is provided at the bottom of the powder box 81, which is connected to the material cavity and is located above the mother mold 31 of the die disk 3. The stirring impellers 83 are rotatably mounted on both sides of the material cavity of the powder box 81. The stirring drive device 84 is connected to the two stirring impellers 83 through a transmission assembly and drives them to rotate. The powder box cover 82 is installed on the top of the powder box 81. A powder inlet 821 is provided on the powder box cover 82, which is connected to the material cavity of the powder box 81 and is located above one of the stirring impellers 83. The upper end of the powder feeding pipe 86 is connected to the outlet of the powder feeding barrel 85, and the lower end of the powder feeding pipe 86 is connected to the powder inlet 821 of the powder box cover 82.

[0040] Preferably, the stirring drive device 84 may include a stirring motor 841 and a driving shaft 842, and the transmission assembly includes a universal joint 843, a synchronous wheel 844 and a synchronous belt 845. The output shaft of the stirring motor is connected to the top end of the driving shaft 842 through a reducer, and the end of the driving shaft 842 is connected to one end of the universal joint 843. Three synchronous wheels 844 are provided and are rotatably mounted on two stirring impellers 83 and the powder box cover 82 respectively. The synchronous belt 845 is sleeved on the three synchronous wheels 844. The other end of the universal joint 843 is connected to the synchronous wheel installed on the powder box cover 82. The stirring motor can drive the two stirring impellers 83 to rotate synchronously.

[0041] The material cavity of the powder box 81 includes an arc-shaped chamber 811 and two semicircular chambers 812 . The arc-shaped chamber 811 is connected to the two semicircular chambers 812 . The powder box 81 forms a scraping portion at both ends of the powder box discharge port 810 , which can scrape away excess powder on the top of the mother mold 31 .

[0042] In specific implementation, the two stirring impellers 83 can fill the powder in the powder box 81 into the molding cavity of the mother mold 31, which can avoid undesirable phenomena such as incomplete filling and powder agglomeration in the material box, thereby improving the powder filling effect and efficiency.

[0043] The present embodiment may further include an automatic material adding and subtracting mechanism 10, the output portion of which is transmission-connected to the material adding and subtracting slide rail 403, the automatic material adding and subtracting mechanism 10 includes a material adding and subtracting lifting drive motor 101, a material adding and subtracting motor seat 102, a material adding and subtracting screw 103, a material adding and subtracting screw nut, an electric rod sleeve 104, a screw seat fixing block 105, a material adding and subtracting lifting block 106 and a material adding and subtracting fixing sleeve 107, the screw seat fixing block 105 is fixedly connected to the bottom end surface of the machine platform 1, and the material adding and subtracting lifting drive motor 101 is connected to the bottom of the screw seat fixing block 105 through the material adding and subtracting motor seat 102. The output shaft of the material adding and subtracting lifting drive motor 101 is transmission connected with the material adding and subtracting screw 103 and drives it to rotate. The electric rod sleeve 104 is fixedly penetrated on the top surface of the machine platform 1. The material adding and subtracting screw 103 is threadedly connected with the material adding and subtracting screw nut located in the screw seat fixing block 105 and passes through the electric rod sleeve 104. The material adding and subtracting lifting block 106 is fixedly connected to the top of the material adding and subtracting screw 103. The second slide groove 142 of the base 14 is provided with a through hole 140 for the material adding and subtracting lifting block 106 to pass through. The limiting flange of the material adding and subtracting fixing sleeve 107 is fixedly connected to the bottom surface of the second slide groove 142 of the lower punch guide rail 40.

[0044] During implementation, the material adding and subtracting lifting drive motor 101 can drive the material adding and subtracting lifting block 106 to move up and down, and can further adjust the height of the material adding and subtracting slide rail 403 to adjust the position of the lower punch 41 in the molding cavity of the mother mold 31, thereby achieving the purpose of adjusting the powder filling amount in the molding cavity.

[0045] Specifically, the pressure sensing device 70 can be provided with two and each includes a load cell 701 and a load cell adapter 702. The load cell 701 is fixed on the concave position of the top surface of the machine platform 1, and the top surface of the load cell 701 contacts the bottom surfaces of the two lower cam seats 71 respectively through the load cell adapter 702.

[0046] Among them, the load cell 701 can detect the clamping pressure of the upper punch 21 and the lower punch 41 in real time, and can convert the pressure into an electrical signal output. The external control system compares and analyzes the received electrical signal with the preset pressure range. If the detected pressure value exceeds or is less than the preset range, the weight of the molded product does not meet the standard and is judged as a defective product.

[0047] like Figure 12 As shown, the defective product sorting blocking member 9 can be installed on the die plate 3 and connected to the material dividing groove 90 arranged downward on the edge of the die plate 3.

[0048] Specifically, one end of the defective product sorting baffle 9 can be fixedly installed on the edge of the die plate 3 and inclined on the die plate 3. The inner side of the other end of the defective product sorting baffle 9 is provided with an arc-shaped concave surface 91 for guiding and discharging the formed product. The discharging end of the material distribution groove 90 corresponds to the arc-shaped concave surface 91. The material distribution groove 90 includes a good product chute 901 and a defective product chute 902 arranged in parallel. An air blowing hole 92 is opened at the end of the defective product sorting baffle 9 on the side of the arc-shaped concave surface 91. The air blowing part of the air blowing hole 92 is directly opposite to the inlet end of the defective product chute 902. An air pipe interface 99 communicating with the air blowing hole 92 from the inside is opened on the outer side wall of the defective product sorting baffle 9.

[0049] Among them, the air pipe interface 99 of the defective product sorting baffle 9 is connected to an external air supply device through an air pipe. This embodiment does not limit the air supply device. When receiving the instruction from the control system after comparing the pressure sensing device 70 with the preset pressure range, the air supply device operates, so that compressed air enters from the air pipe interface 99, reaches the air blowing hole 92 through the internal channel of the defective product sorting baffle 9, and blows the defective products passing through here into the defective product chute 902 for discharging and collecting, thus automatically completing the sorting of defective products.

[0050] The working principle of this embodiment is as follows:

[0051] First of all, the powder stored in the powder feeding barrel 85 can be filled into the forming cavity of the female mold 31 that just rotates to its lower right through the powder feeding pipe 86. After the powder filling is completed, the powder-filled female mold 31 rotates counterclockwise with the die plate 3. When passing through the powder box feeding port 810, the opening edge of the powder box feeding port 810 can scrape off the excess powder. When rotating to the pressing station, the upper punch rod 21 is inserted into the forming cavity of the female mold 31, the punch upper cam 124 of the upper cam pressing rod device 12 presses down the upper punch rod 21, and at the same time, the punch lower cam 135 of the lower cam pressing rod device 13 can push up the lower punch rod 31. Under the combined action of the upper punch rod 21 and the lower punch rod 31, the product is pressed and formed in the forming cavity of the female mold 31. After the pressing is completed, the product is ejected by the lower punch rod 31. The defective product sorting baffle 9 blows the defective products into the defective product chute 902 for discharging and collecting, and guides the good products and slides them into the good product chute 901 for discharging and collecting.

[0052] To sum up, the present invention enables the press to rotate at high speed and continuously during the forming process through the rotation drive mechanism, and can realize a series of operations such as automatic powder feeding, automatic stirring and powder filling, automatic upper and lower pressing rods, powder forming and pressing, and automatic discharging of defective products. The operation is simple and convenient, can continuously complete multiple pressing and forming, operates stably and reliably, is fast, and improves the production efficiency and product quality.

[0053] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A high-speed rotary press, characterized in that: The machine comprises a machine platform, a top plate, a support arm, a main shaft, a base, an upper turntable, a die disk, a lower turntable, a plurality of upper punch rods, a plurality of lower punch rods, a plurality of master molds, a press rotation drive mechanism, an upper cam pressure rod mechanism, a lower cam pressure rod mechanism, a pressure sensing device, a powder feeding and stirring mechanism, a defective product sorting and blocking member, and a material dividing trough. The main shaft is longitudinally penetrated between the machine platform and the top plate through the base. The upper turntable, the die disk and the lower turntable are sequentially connected from top to bottom and are rotatably connected to the main shaft. The press rotation drive mechanism is installed on the support arm and can enable its output part to drive the lower turntable to rotate, thereby driving the upper turntable and the die disk to rotate relative to the main shaft along with the lower turntable. The upper punch rod and the lower punch rod are each movably inserted in the bushings of the upper turntable and the lower turntable and are arranged in a ring shape. The master molds are installed in the hole positions of the die disk corresponding to the insertion positions of the upper punch rod and the lower punch rod. The cam pressure rod mechanism is installed on the top plate and its pressure rod part can abut against the upper punch rod rotated below it. The lower cam pressure rod mechanism is installed on the machine platform through the pressure sensor device and its pressure rod part can abut against the lower punch rod rotated above it, so as to realize the simultaneous insertion of the upper punch rod and the lower punch rod into the mother mold to press and form the powder. The defective product sorting blocking member is installed on the die disk and is connected to the dividing groove arranged downward at the edge of the die disk.

2. The high-speed rotary press according to claim 1, wherein: The rotary drive mechanism of the press comprises a rotary drive motor, a motor pulley, a worm pulley, a transmission belt, a transmission worm, a transmission worm wheel and a balancing handwheel. The rotary drive motor is fixedly mounted inside the machine platform. The output shaft of the rotary drive motor is transmission-connected to the motor pulley and drives it to rotate. Both ends of the transmission worm are rotatably arranged horizontally on the support arm. The transmission worm wheel is mounted inside the lower turntable and extends out of one side of its outer edge. The teeth of the transmission worm are meshed with the teeth of the transmission worm wheel. The worm pulley is fixedly connected to one end of the support arm extending out of the transmission worm and is located above the motor pulley. The transmission belt is sleeved between the motor pulley and the worm pulley. The balancing handwheel is fixedly connected to the other end of the support arm extending out of the transmission worm.

3. A high-speed rotary press according to claim 1, characterized in that: The powder feeding and stirring mechanism includes a powder box, a powder box cover plate, two stirring impellers, a stirring driving device, a powder feeding barrel and a powder feeding pipe. The powder box is located on the top surface of the die pressing plate. A material cavity is provided inside the powder box. A powder box discharging opening communicating with the material cavity and located above the female die of the die pressing plate is formed at the bottom of the powder box. The stirring impellers are respectively rotatably installed on both sides inside the material cavity of the powder box. The stirring driving device is in transmission connection with the two stirring impellers through a transmission component and drives them to rotate. The powder box cover plate is installed on the top of the powder box. A powder inlet communicating with the material cavity of the powder box and located above one of the stirring impellers is formed on the powder box cover plate. The upper end of the powder feeding pipe is connected to the outlet of the powder feeding barrel, and the lower end of the powder feeding pipe is connected to the powder inlet of the powder box cover plate.

4. A high-speed rotary press according to claim 1, characterized in that: Two upper cam pressing rod mechanisms are provided and are respectively arranged on the bottom surface of the top plate in sequence downward along the rotation direction of the upper punch rod. Each upper cam pressing rod mechanism includes an upper cam seat, an upper worm mounting seat, an upper pressure regulating worm, an upper cam driving motor, an upper eccentric shaft, an upper cam, and an upper eccentric shaft gear. The top surfaces of the upper cam seats are respectively fixedly connected to the bottom of the top plate. The upper worm mounting seat is fixedly connected to the front of the upper cam seat. The two ends of the upper pressure regulating worm are rotatably arranged between the two inner side walls of the upper worm mounting seat. The output shaft of the upper cam driving motor is in transmission connection with one end of the upper pressure regulating worm and can drive it to rotate. The two ends of the upper eccentric shaft are rotatably penetrated through the front and back surfaces of the upper cam seat. The upper cam is fixedly sleeved on the upper eccentric shaft and extends out of the upper cam seat. The upper eccentric shaft gear is fixedly connected to the front of the upper eccentric shaft extending out of the upper cam seat. The tooth positions of the upper eccentric shaft gear are meshed with the tooth positions of the upper pressure regulating worm.

5. A high-speed rotary press according to claim 1, characterized in that: Two lower cam pressing rod mechanisms are provided and are respectively arranged on the top surface of the machine table in sequence upward along the rotation direction of the lower punch rod. Each lower cam pressing rod mechanism includes a lower cam seat, a lower worm mounting seat, a lower pressure regulating worm, a lower cam driving motor, a lower eccentric shaft, a lower cam, and a lower eccentric shaft gear. The top surfaces of the lower cam seats are respectively fixedly connected to the bottom of the top plate. The lower worm mounting seat is fixedly connected to the front of the lower cam seat. The two ends of the lower pressure regulating worm are rotatably arranged between the two inner side walls of the lower worm mounting seat. The output shaft of the lower cam driving motor is in transmission connection with one end of the lower pressure regulating worm and can drive it to rotate. The two ends of the lower eccentric shaft are rotatably penetrated through the front and back surfaces of the lower cam seat. The lower cam is fixedly sleeved on the lower eccentric shaft and extends out of the lower cam seat. The lower eccentric shaft gear is fixedly connected to the front of the lower eccentric shaft extending out of the lower cam seat. The tooth positions of the lower eccentric shaft gear are meshed with the tooth positions of the lower pressure regulating worm.

6. A high-speed rotary press according to claim 1, characterized in that: The upper punch rod guide rail includes a guide rail main body. An ascending track section, an upper horizontal track section, a descending track section and a lower horizontal track section are sequentially arranged around the outer periphery of the guide rail main body. The top surface of the upper horizontal track section is flush with the top surface of the guide rail main body. The lower horizontal track section is connected between the ascending track section and the descending track section.

7. A high-speed rotary press according to claim 5, characterized in that: The lower punch guide rail includes a push-out slide rail, a pull-in slide rail, a material adding and subtracting slide rail, and a bridge slide rail. One end of the push-out slide rail is connected to one end of the pull-in slide rail. The outer periphery of the base is provided with a first slide groove for supporting the push-out slide rail and the pull-in slide rail, a second slide groove for supporting the material adding and subtracting slide rail, and a third slide groove for docking between the pressure rod parts of the two lower cam pressure rod mechanisms. The two ends of the bridge slide rail are respectively placed between the first slide groove and the second slide groove and are connected to the other end of the pull-in slide rail and one end of the material adding and subtracting slide rail.

8. The high-speed rotary press according to claim 5, wherein: The pressure sensing device is provided with two and each includes a load cell and a load cell adapter. The load cell is fixed on the concave position of the top surface of the machine platform. The top surface of the load cell contacts the bottom surfaces of the two lower cam seats respectively through the load cell adapter.

9. The high-speed rotary press according to claim 7, characterized in that: It also includes an automatic material adding and subtracting mechanism, the output part of which is located below the material adding and subtracting slide rail, and the automatic material adding and subtracting mechanism includes a material adding and subtracting lifting drive motor, a material adding and subtracting motor seat, a material adding and subtracting screw, a material adding and subtracting screw nut, an electric rod sleeve, a screw seat fixing block, a material adding and subtracting lifting block and a material adding and subtracting fixing sleeve, the screw seat fixing block is fixedly connected to the bottom end surface of the machine platform, the material adding and subtracting lifting drive motor is connected to the bottom of the screw seat fixing block through the material adding and subtracting motor seat, and the output shaft of the material adding and subtracting lifting drive motor is drivingly connected to the material adding and subtracting screw The lifting block is fixedly connected to the top of the material adding and subtracting screw rod, and the second slide groove of the base is provided with a through hole for the lifting block of material adding and subtracting to pass through. The limiting flange of the material adding and subtracting fixing sleeve is fixedly connected to the bottom surface of the second slide groove of the lower punch guide rail. The material adding and subtracting lifting drive motor can drive the material adding and subtracting lifting block to move up and down, thereby adjusting the height of the material adding and subtracting slide rail.

10. A high-speed rotary press according to claim 1, characterized in that: One end of the defective product sorting stopper is fixedly mounted on the edge of the die disk and tilted on the die disk, and the inner side surface of the other end of the defective product sorting stopper is provided with an arc-shaped concave surface for guiding the discharge of the formed product, and the discharge end of the dividing trough is arranged corresponding to the arc-shaped concave surface, and the dividing trough includes a good product chute and a defective product chute arranged in parallel, and an air hole is provided on the end of the defective product sorting stopper located on one side of the arc-shaped concave surface, and the blowing part of the air hole is opposite to the inlet end of the defective product chute, and an air pipe interface connected to the air hole from the inside is provided on the outer wall of the defective product sorting stopper.

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