Pressure self-adaptive high-density precise briquetting equipment

Abstract

The application discloses a pressure self-adaptive moxa stick high-density precision press forming equipment and relates to the technical field of moxa stick production and processing equipment. The equipment comprises a processing table and a rotating motion force unit, the rotating motion force unit is in transmission connection with a material conveying ring, a plurality of groups of lower mold units are arranged in a ring shape on the material conveying ring, the upper mold unit comprises an upper mold control console, the upper mold control console is provided with a second control guide rail groove with a gradually changed height, a second guide sliding block is slidably arranged on the second control guide rail groove, the second guide sliding block is fixedly connected with an upper mold column, a ring-shaped first control guide rail groove is arranged outside the processing table, and the first control guide rail groove is provided with a V-shaped section. The equipment adopts a multi-station circumferential rotation layout of the material conveying ring, and each station independently and in parallel completes the feeding, grading pressure applying, dynamic pressure maintaining and discharging processes. When a certain station enters the pressure maintaining stage, the remaining stations can synchronously carry out the feeding and discharging operations, so that the defect that the pressure maintaining of the traditional single-mold press forming equipment occupies the whole machine beat is overcome.

Description

Technical Field

[0001] This invention relates to the field of moxa stick production and processing equipment, specifically a pressure-adaptive high-density precision pressing and molding equipment for moxa sticks. Background Technology

[0002] Moxa sticks are moxibustion consumables made from moxa wool obtained through the processing of mugwort leaves. They are widely used in traditional Chinese medicine physiotherapy and moxibustion health preservation. Large-diameter moxa sticks, known as "cannon moxa sticks," have a large cross-sectional size and a thick molding layer, making them a commonly used high-volume moxibustion product in moxibustion clinics. Currently, large-diameter moxa sticks are generally pressed using hydraulic pressing equipment. This equipment is typically a single-station structure, with one set of molds sequentially completing all processes: filling, pressing, holding pressure, and demolding. Due to the limitations of the equipment structure, the pressure-holding stage must occupy the machine's operating cycle time. During the pressure-holding process, the machine cannot perform other actions such as feeding or unloading, significantly restricting production efficiency.

[0003] Meanwhile, most traditional single-mold hydraulic equipment adopts a single high-pressure, one-time pressing molding method. Even if some equipment can achieve segmented pressurization, it is necessary to stop the machine and wait for each stage of pressure holding to be completed. Large-diameter moxa sticks have thick material layers, and the moxa wool contains a large amount of air. One-time rapid high-pressure pressing can easily trap air inside the blank, which can easily cause uneven density distribution inside and outside, and top and bottom of the moxa stick. After demolding, due to the elastic effect of the moxa wool fibers, the finished product is prone to defects such as rebound expansion, internal dark cracks, and edge chipping and flaking. Internal defects are difficult to identify with the naked eye and will only appear during transportation, paper cannon sleeve, and use. They can also cause inconsistent burning rates before and after the moxa stick burns, large fluctuations in firepower, and scattered ash, among other finished product quality problems.

[0004] Therefore, it is necessary to propose a pressure-adaptive high-density precision pressing and molding equipment for ferrules to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a pressure-adaptive high-density precision pressing and molding device for moxa sticks, so as to solve the problems mentioned in the background art of existing hydraulic moxibustion pressing devices, such as pressure holding time being too long and easy sealing leading to uneven density and hidden cracks.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a pressure-adaptive high-density precision pressing and molding equipment for molded columns, comprising a processing table, a transfer power unit, a material transfer ring, a lower mold unit, an upper mold unit, a feeding mechanism, and a pushing unit; the transfer power unit is connected to the material transfer ring, and several sets of lower mold units are arranged in a ring on the material transfer ring; the upper mold unit includes an upper mold control console, which is provided with a second control guide rail groove with gradually changing elevation, and a second guide slider is slidably mounted on the second control guide rail groove, the second guide slider being fixedly connected to the upper mold column; a first control guide rail groove is provided on the outer side of the processing table, and the first control guide rail groove is provided with a V-shaped section; the lower mold unit includes a flipping plate, a connecting rod, a first guide slider, and a lower mold cylinder; the first guide slider is slidably engaged with the first control guide rail groove, and the first guide slider is hinged to the flipping plate via the connecting rod, the flipping plate being fixedly connected to the lower mold cylinder; the feeding mechanism and the pushing unit are respectively arranged at corresponding workstations along the circumference of the material transfer ring.

[0008] The present invention is further configured such that: the transfer power unit includes a servo motor, a speed-changing gear, an internal gear ring, and an annular slider; the output end of the servo motor meshes with the speed-changing gear through a gear, the speed-changing gear meshes with the internal gear ring, the internal gear ring is fixed to the annular slider, the annular slider is fixedly connected to the material transfer ring, and the annular slider is slidably assembled in the annular slide of the main mounting base.

[0009] By adopting the above technical solution, using gear and ring gear reduction transmission, the transmission torque is large, the rotational motion is smooth, and the indexing consistency of multiple lower mold unit stations is guaranteed.

[0010] The present invention is further configured such that: the lower mold unit also includes a sealing plate and a return spring; the sealing plate is disposed at the bottom of the inner cavity of the lower mold cylinder, and the two ends of the return spring are respectively connected to the sealing plate and the bottom surface of the lower mold cylinder.

[0011] By adopting the above technical solution, the sealing plate serves as the forming bottom mold, and the reset spring can realize the automatic return of the sealing plate after unloading, simplifying the reset drive structure.

[0012] The present invention is further configured such that: the bottom of the lower mold cylinder is provided with a discharge through hole, and the discharge through hole is positioned opposite to the output end of the pusher unit.

[0013] By adopting the above technical solution, an obstacle avoidance channel is provided for the output end of the pushing unit, so as to push the formed molten column outward from the bottom of the mold.

[0014] The present invention is further configured to include an upper mold position control mechanism; the upper mold position control mechanism includes a telescopic unit, a positioning column and a mounting frame; the output end of the telescopic unit is connected to the mounting frame, the positioning column penetrates the top plate and slides with the top plate, and the upper mold unit is fixedly installed on the mounting frame.

[0015] By adopting the above technical solution, the reference height of the upper mold unit can be adjusted as a whole to adapt to the molding of columns of different heights and specifications, and the positioning column ensures that the lifting movement does not deviate.

[0016] The present invention is further configured such that: a plurality of upper mold limiting guide rails are fixed on the material transfer ring, and the upper mold column and the upper mold limiting guide rails form a vertical sliding pair.

[0017] By adopting the above technical solution, the upper mold column is motion-constrained so that it can only move in the vertical direction, thus avoiding swaying and jamming during the pressing process.

[0018] The present invention is further configured such that: the upper mold control console is divided into a highest section, a pressure section and a rising section in sequence along the circumference, and the pressure section is provided with a contour surface with continuously changing elevation.

[0019] By adopting the above technical solution, the graded pressing is automatically completed by relying on the change in the height of the track profile and rotating with the turntable, without the need to configure multiple sets of independent pressing cylinders.

[0020] The present invention is further configured such that: the feeding mechanism includes a hopper, a screw conveying unit, and a feeding nozzle; the hopper is connected to the feeding end of the screw conveying unit, the discharging end of the screw conveying unit is connected to the feeding nozzle, and the feeding nozzle is oriented toward the V-shaped section of the first control guide groove.

[0021] By adopting the above technical solution, the feeding of moxa wool is completed at the tilting station of the lower mold cylinder, which adapts to the rotation posture of the mold and realizes continuous automatic feeding.

[0022] The present invention is further configured such that: the flipping plate is hinged to the extension platform of the material conveying ring via a hinge; the two ends of the connecting rod are respectively hinged to a first hinge seat and a second hinge seat, the first hinge seat being disposed on the flipping plate and the second hinge seat being disposed on the first guide slider.

[0023] By adopting the above technical solution, the mold can be flipped by using the track sliding to drive the linkage mechanism, eliminating the need for an additional flipping drive cylinder and reducing pneumatic components.

[0024] (III) Beneficial Effects Compared with the prior art, the present invention provides a pressure-adaptive high-density precision pressing and molding device for moxa cones, which has the following beneficial effects: 1. This invention adopts a multi-station circular rotation layout for the material transfer ring. Each station independently and in parallel completes the processes of feeding, graded pressure application, dynamic pressure holding, and unloading. When a station enters the pressure holding stage, the other stations can simultaneously carry out feeding and unloading operations without stopping the entire machine to wait for the pressure holding cycle to end. This overcomes the technical drawback of traditional single-mold pressing and forming equipment where pressure holding occupies the entire machine's cycle time. Under the premise of ensuring the pressure holding process requirements, it effectively improves the continuous production efficiency of moxibustion sticks.

[0025] 2. This invention utilizes the gradually changing elevation structure of the upper mold control console track, and automatically completes multi-stage graded pressure application—light pressure, medium pressure, and final pressure—based on the rotational motion of the turntable. The moxa fibers are gradually compressed and arranged, and the gas trapped inside the mold cavity can gradually overflow outwards, effectively alleviating the fiber rebound phenomenon after demolding of large-diameter moxa sticks, reducing defects such as internal dark cracks, edge breakage, and flaking. This makes the overall density distribution of the moxa stick more uniform, thereby improving the combustion state of the finished product, ensuring a stable combustion rate and balanced firepower for the entire moxa stick, and better ash integrity.

[0026] 3. This invention features an upper mold position control mechanism. The telescopic unit can adjust the reference height of the upper mold unit as a whole, quickly changing the relative stroke between the upper mold column and the lower mold cylinder. It can adapt to the molding of different length specifications of mold columns without changing the cam track, making the equipment highly versatile. With the reset spring and the elastic floating component of the sealing plate, the pressure adaptive compensation effect of each station is maintained even after switching product specifications, making the equipment highly versatile. Attached Figure Description

[0027] Figure 1 This is a first three-dimensional schematic diagram of the moxa cone pressing and molding equipment of the present invention; Figure 2 This is a second perspective schematic diagram of the moxa cone pressing and molding equipment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the moxa cone pressing and molding equipment of the present invention; Figure 4 This is a first three-dimensional schematic diagram of the moxa cone pressing mechanism of the present invention; Figure 5 This is a second three-dimensional schematic diagram of the moxa cone pressing mechanism of the present invention; Figure 6 This is a first cross-sectional schematic diagram of the moxa cone pressing mechanism of the present invention; Figure 7 This is a second cross-sectional schematic diagram of the moxa cone pressing mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point A; Figure 9 This is a three-dimensional schematic diagram of the mold unit of the present invention; Figure 10 This is a cross-sectional schematic diagram of the lower mold cylinder structure of the present invention; Figure 11 This is a first perspective view of the mold mounting ring structure of the present invention; Figure 12 This is a second perspective view of the mold mounting ring structure of the present invention.

[0028] In the diagram: 10. Processing table; 11. Main mounting hole; 12. Conveyor belt unit; 121. Finished product placement table; 122. Moxibustion stick; 20. Moxibustion stick pressing mechanism; 21. Main mounting base; 212. Mounting chamber; 214. Annular slide; 215. Annular slider; 22. Material transfer ring; 23. Lower mold unit; 231. Tilting plate; 232. Lower mold cylinder; 2321. Unloading through hole; 2322. Support base; 2323. Sealing plate; 2324. Return spring; 233. First hinge seat; 234. Connecting rod; 235. Second hinge seat; 236. First guide slider; 237. Hinge; 24. Upper mold Unit; 241, Mold mounting ring; 242, Upper mold control console; 243, Upper mold pillar; 244, Second control guide rail groove; 245, Second guide slider; 25, Upper mold limiting guide rail; 26, Pushing unit; 27, Extension table; 28, Mounting frame; 29, First control guide rail groove; 30, Transfer power unit; 31, Servo motor; 32, Speed ​​change gear; 33, Internal gear ring; 40, Upper mold position control mechanism; 41, Support leg; 42, Top plate; 43, Telescopic unit; 44, Positioning pillar; 50, Feeding mechanism; 51, Screw conveyor unit; 52, Hopper; 53, Conveying unit bracket; 54, Feed nozzle. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "width", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0032] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Please see Figures 1 to 5 A pressure-adaptive high-density precision pressing and molding equipment for moxa cones includes a processing table 10. A main mounting hole 11 is opened at the center of the top of the processing table 10. A moxa cone pressing mechanism 20 is installed inside the main mounting hole 11. The moxa cone pressing mechanism 20 includes a main mounting base 21 and a mounting frame 28. The main mounting base 21 is fixedly connected to the processing table 10. A material transfer ring 22 is rotatably connected to the outer side of the center of the main mounting base 21. Multiple extension platforms 27 are fixedly connected to the edge of the material transfer ring 22. A lower mold unit 23 that can be rotated 90 degrees is installed on the extension platform 27. An upper mold unit 24 that is adapted to the lower mold unit 23 is installed on the mounting frame 28.

[0034] Please see Figure 6 and Figure 7 An annular slide rail 214 is provided on the outer side of the middle part of the main mounting base 21. An annular slider 215 is slidably connected inside the annular slide rail 214. The annular slider 215 is fixedly connected to the material transfer ring 22. An internal gear ring 33 is fixedly connected inside the annular slider 215. An installation chamber 212 is provided inside the main mounting base 21. A transfer power unit 30 is provided inside the installation chamber 212. The transfer power unit 30 includes a servo motor 31 fixedly connected to the installation chamber 212 and a speed-changing gear 32 rotatably connected to the installation chamber 212. The speed-changing gear 32 meshes with the internal gear ring 33. An output gear is fixedly connected to the output shaft of the servo motor 31. The output gear meshes with the speed-changing gear 32. The transfer power unit 30 is used to provide power for the rotation of the material transfer ring 22. Specifically, the servo motor 31 drives the output gear to rotate. The output gear drives the internal gear ring 33 to rotate through the speed-changing gear 32. The internal gear ring 33 drives the annular slider 215 to rotate synchronously, and finally drives the material transfer ring 22 to rotate.

[0035] Please see Figure 6 and Figure 7 The top of the installation chamber 212 is also fixedly connected to a pusher unit 26, which has a cylinder or electric telescopic rod. The output end of the pusher unit 26 passes through the main mounting base 21 and corresponds to one of the lower mold units 23.

[0036] Please see Figure 6 and Figure 10The lower mold unit 23 includes a flip plate 231 rotatably connected to the extension table 27. A hinge 237 is installed at the bottom center of the flip plate 231, and the other end of the hinge 237 is connected to the edge of the extension table 27.

[0037] Please see Figure 4 and Figure 8 At the bottom of the other end of the flip plate 231, a first hinge seat 233 is installed. A connecting rod 234 is rotatably connected to the first hinge seat 233. A second hinge seat 235 is rotatably connected to the bottom of the connecting rod 234. A first guide slider 236 is fixedly connected to the bottom of the second hinge seat 235. The first guide slider 236 is slidably connected to the first control guide groove 29. The first control guide groove 29 is generally annular and located on the outer surface of the main mounting base 21, forming a rotation loop. One part of the first control guide groove 29 is V-shaped, that is, it first tilts downward and then tilts upward; this part is used to control the second hinge seat 235. The vertical position is adjusted, which in turn pulls the connecting rod 234, ultimately causing the flipping plate 231 to rotate 90 degrees along the edge of the extension platform 27, changing the lower mold cylinder 232 from a vertical state to a horizontal position, thus cooperating with the pushing unit 26 and the feeding mechanism 50; one end of the flipping plate 231 is fixedly connected to the lower mold cylinder 232, the bottom of the lower mold cylinder 232 is provided with a discharge through hole 2321, the bottom of the inner cavity of the lower mold cylinder 232 is fixedly connected to a support base 2322, the top of the support base 2322 is provided with a sealing plate 2323, and the bottom of the sealing plate 2323 is fixedly connected to the bottom surface of the lower mold cylinder 232 through a return spring 2324.

[0038] Please see Figure 6 and Figure 7 When the lower mold cylinder 232 on the lower mold unit 23 is rotated outward by 90 degrees, the unloading through hole 2321 at the bottom of the lower mold cylinder 232 corresponds to the output end of the pusher unit 26. The two are coaxial, and the diameter of the output end of the pusher unit 26 is smaller than that of the unloading through hole 2321. The pusher unit 26 is started, and the output end of the pusher unit 26 is inserted into the unloading through hole 2321. Then the sealing plate 2323 is pushed to push out the moxibustion stick 122 inside the lower mold cylinder 232. Then the pusher unit 26 is controlled to retract the output end. At this time, the reset spring 2324 pulls the sealing plate 2323 to reset under the action of elasticity.

[0039] Please see Figure 4 and Figure 5The upper mold unit 24 includes a mold mounting ring 241 fixed on the mounting bracket 28. The bottom of the mold mounting ring 241 is provided with upper mold control consoles 242 of different heights. The surface of the upper mold control console 242 is provided with a second control guide groove 244. Multiple second guide sliders 245 are slidably connected inside the second control guide groove 244. The bottom end of the second guide slider 245 extends out of the second control guide groove 244 and is fixedly connected to an upper mold column 243. Multiple upper mold limiting guides 25 are fixedly connected to the top end of the material transfer ring 22. Each upper mold limiting guide 25 corresponds to a lower mold unit 23. The guide block inside the upper mold limiting guide 25 is fixedly connected to the upper mold column 243. The upper mold column 243 can slide up and down along the upper mold limiting guide 25. By setting the upper mold limiting guide 25, it is ensured that multiple upper mold columns 243 correspond to multiple lower mold cylinders 232 in pairs. Please see Figure 11 and Figure 12 The height distribution of the upper mold control console 242 is as follows: the starting point is when the lower mold unit 23 is horizontally positioned, which is the lowest point of the V-shaped part of the first control guide groove 29; the surface of the upper mold control console 242 is most deeply recessed, which is the highest section; then it gradually extends downwards, which is the pressure section; it rises again after reaching the lowest point of the pressure section, which is the lifting section; the end of the lifting section connects with the highest section; thus forming a circular circulation platform; the purpose of setting the lifting section and the highest section is to lift the upper mold column 243, raise the upper mold column 243 to the highest point, so that the upper mold column 243 leaves the lower mold cylinder 232, and thus does not interfere with the flipping unloading and loading process of the lower mold cylinder 232; the gradually downward extending pressure section is to achieve graded pressure with different pressure intensities, such as when the material conveying ring 22 rotates one station, each lower mold unit 23 is one station, the upper mold column 243 descends a certain distance, achieving graded pressure with different intensities.

[0040] The existing pressure application is a single-level pressure application, which requires pressure holding. This not only damages the moxa sticks or prevents them from being properly compressed, but also prevents the equipment from performing other operations during the pressure holding process, affecting processing efficiency. If a graded pressure application is added on top of this, the processing time will be greatly extended because each pressure holding period requires a certain duration. However, this invention achieves continuous processing without stopping the machine by using multiple rotating workstations to process the moxa sticks. When one station is holding pressure, it does not affect the unloading or loading of other stations, achieving uninterrupted processing. Moreover, the graded pressure application can ensure the quality of the moxa sticks. Please see Figure 1 and Figure 2The upper mold position control mechanism 40 is installed at the top of the processing table 10. The upper mold position control mechanism 40 includes a top plate 42 located directly above the upper mold unit 24. The bottom ends of the top plate 42 are fixedly connected to the surface of the processing table 10 through support legs 41. A telescopic unit 43 is fixedly installed in the middle of the top plate 42. The output end of the telescopic unit 43 is fixedly connected to the mounting bracket 28. The top of the mounting bracket 28 is also fixedly connected to a positioning column 44. The positioning column 44 passes through the top plate 42 and is slidably connected to the top plate 42. The telescopic unit 43 is used to control the height of the upper mold unit 24. By setting the upper mold position control mechanism 40 and using the telescopic unit 43 to control the height of the upper mold unit 24, the position of the upper mold unit 24 can be adjusted according to the length of the column to be processed, thereby changing the relative position of all the upper mold columns 243 and the lower mold cylinder 232 to achieve different processing requirements.

[0041] Please see Figure 1 and Figure 2 The top of the processing table 10 is also equipped with a feeding mechanism 50, which includes a screw conveyor unit 51. The top of the screw conveyor unit 51 is connected to a hopper 52, and the bottom of the screw conveyor unit 51 is connected to a conveyor unit bracket 53. A feeding nozzle 54 is installed at the output end of the screw conveyor unit 51. The feeding nozzle 54 is inclined downwards and is positioned on the path of the lower mold cylinder 232 from the horizontal state to the vertical state, that is, at the rising point of the V-shaped section of the first control guide groove 29. Its purpose is to: allow the lower mold cylinder 232 to rotate from the horizontal state to the vertical state. During the process of flipping from the neutral state to the vertical state, the lower mold cylinder 232 will rotate upward. When the lower mold cylinder 232 is tilted, the feed nozzle 54 corresponds to the lower mold cylinder 23, thereby activating the spiral conveying unit 51 to convey moxa wool into the lower mold cylinder 232. Alternatively, the feed nozzle 54 can be set when the lower mold cylinder 232 is completely flipped to the vertical state, but the height of the upper mold control console 242 needs to be set according to the actual situation to ensure that the highest section of the upper mold control console 242 can make the upper mold column 243 higher than the feed nozzle 54, so as to avoid collision or movement interference between the two.

[0042] Please see Figure 2 A conveyor belt unit 12 is installed at one end of the surface of the processing table 10. The conveyor belt unit 12 is located at the horizontal position of the lower mold cylinder 232. A finished product placement table 121 is installed on the conveyor belt of the conveyor belt unit 12. The surface of the finished product placement table 121 is arc-shaped. The arc-shaped bearing surface of the finished product placement table 121 is set opposite to the unloading output position of the lower mold cylinder 232. The finished product placement table 121 is used to carry the moxibustion stick 122.

[0043] The working principle is as follows: When this pressure-adaptive high-density precision pressing and molding equipment for moxa sticks is working, the rotational power is provided by the transfer power unit 30, and the power output of the servo motor 31 is transmitted to the internal gear ring 33 through the output gear and the speed change gear 32. The internal gear ring 33 drives the annular slider 215 to rotate along the annular slide 214, which in turn drives the material transfer ring 22 to rotate in a circular manner. Multiple sets of lower mold units 23 arranged on the extension table 27 of the material transfer ring 22 revolve in a circular manner with the material transfer ring 22. Each station sequentially passes through the feeding, graded pressure application, pressure holding, and unloading stations to realize the continuous cycle molding and processing of moxa sticks for moxibustion. During the revolution of the material transfer ring 22, the first guide slider 236 slides along the first control guide groove 29 on the outer surface of the main mounting base 21. When the first guide slider 236 runs to the V-shaped section of the first control guide groove 29, the change in track height drives the second hinge seat 235 to move up and down. Through the connecting rod 234, the flip plate 231 is pulled with the hinge 237 as the rotation fulcrum, which drives the lower mold cylinder 232 to complete a 90° flip. The loading and unloading actions are completed during the switching of the horizontal, inclined and vertical postures of the lower mold cylinder 232. At the loading station, the lower mold cylinder 232 rotates and flips from a horizontal to a vertical position. The lower mold cylinder 232 is in an inclined position. The screw conveyor unit 51 feeds the moxa wool inside the hopper 52 into the inner cavity of the lower mold cylinder 232 through the feed nozzle 54, completing the moxa wool filling. After the filling is completed, the lower mold unit 23 continues to revolve with the feed ring 22, and the lower mold cylinder 232 returns to a vertical position and enters the pressing station. In the upper mold unit 24, the second guide slider 245 slides along the second control guide rail groove 244 of the upper mold control console 242, and the track height of the upper mold control console 242 changes continuously in the circumferential direction; the upper mold column 243 is constrained by the upper mold limiting guide rail 25 and can only slide in the vertical direction. When the station moves to the highest section, the track is most recessed, the upper mold column 243 is raised to the highest position, and the upper mold column 243 is completely separated from the lower mold cylinder 232, avoiding motion interference from the flipping and feeding actions; when entering the pressure application section, the track height of the upper mold control console 242 gradually decreases, forcing the upper mold column 243 to move downward step by step, and sequentially achieving light pressure, intermediate pressure, and final pressure on the moxa wool inside the lower mold cylinder 232. The equipment relies on the circular stroke of the turntable's revolution to achieve dynamic pressure holding. The mold station continues to rotate in the pressure holding arc section without stopping the machine. At the same time, different stations perform multiple processes such as feeding, pressing, pressure holding, and unloading, without interfering with each other. The equipment is equipped with an upper mold position control mechanism 40, a telescopic unit 43 to drive the overall lifting of the mounting frame 28, and a positioning column 44 to guide and limit the overall height of all upper mold columns 243, adapting to the forming requirements of moxibustion columns of different lengths and specifications. After pressing, the moxa sticks are transferred to the unloading station along the workstation. The V-shaped section of the first control guide groove 29 drives the flipping plate 231 to rotate 90°, so that the lower mold cylinder 232 becomes horizontal. The unloading through hole 2321 at the bottom of the lower mold cylinder 232 is coaxially aligned with the output end of the pusher unit 26. The output end of the pusher unit 26 passes through the unloading through hole 2321 and pushes the sealing plate 2323 to overcome the elastic force of the return spring 2324, pushing the formed moxa stick 122 out of the lower mold cylinder 232 to complete the unloading. After the pusher unit 26 retracts, the return spring 2324 pulls the sealing plate 2323 to reset, sealing the bottom of the lower mold cylinder 232. The lower mold unit 23 continues to revolve, resets to the vertical position along the first control guide groove 29, and enters the next cycle.

[0044] In summary, this invention adopts a 22-station circular rotating layout for the material transfer ring. Each station performs the feeding, graded pressure application, dynamic pressure holding, and unloading processes in parallel. When one station is in the pressure holding process, the other stations can simultaneously complete the feeding or unloading operations. There is no need to stop the entire machine to wait for the pressure holding to end. This overcomes the defect of traditional single-mold pressing equipment where the pressure holding process occupies the entire machine's cycle time, and significantly improves the production and processing efficiency of moxibustion sticks.

[0045] This invention relies on the gradual elevation change of the track of the upper mold control console 242 to automatically achieve multi-stage graded pressure of light pressure, medium pressure and final pressure as the turntable rotates. The moxa fibers are gradually compressed, and the air trapped in the mold cavity can be fully discharged, reducing the defect rate of large-diameter moxa sticks after demolding, such as rebound, dark cracks and edge breakage, improving the density uniformity of the moxa sticks and improving the combustion consistency of the finished product.

[0046] This invention features an upper mold position control mechanism 40 and a telescopic unit 43 that can adjust the reference height of the upper mold unit 24 as a whole, quickly changing the relative stroke between the upper mold column 243 and the lower mold cylinder 232. It can adapt to the molding of different length specifications of mold columns without changing the cam track, making the equipment highly versatile. With the return spring 2324 and the elastic floating component of the sealing plate 2323, the pressure adaptive compensation effect of each station is maintained even after switching product specifications, making the equipment highly versatile.

[0047] This invention utilizes the V-shaped track of the first control guide groove 29 and the linkage mechanism of the connecting rod 234 to achieve automatic 90° rotation of the lower mold cylinder 232 during its revolution. This, combined with the screw conveyor unit 51, completes the filling process under the tilted posture of the mold. After the unloading station rotates, the pushing unit 26, in conjunction with the sealing plate 2323 and the return spring 2324, completes the automatic pushing and unloading of materials. The entire loading and unloading action is achieved by the rotation linkage of the turntable, reducing the number of reciprocating cylinders and simplifying the overall machine control logic.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns, comprising a processing table (10), a transfer power unit (30), a material transfer ring (22), a lower mold unit (23), an upper mold unit (24), a feeding mechanism (50), and a pushing unit (26); characterized in that: The transfer power unit (30) is connected to the material transfer ring (22) for transmission. Several sets of lower mold units (23) are arranged in a ring on the material transfer ring (22). The upper mold unit (24) includes an upper mold control console (242). The upper mold control console (242) is provided with a second control guide groove (244) with gradually changing elevation. The second control guide groove (244) is slidably fitted with a second guide slider (245). The second guide slider (245) is fixedly connected to the upper mold column (243). The processing table (10) is provided with an annular first control guide groove (29) on the outside, and the first control guide groove (29) is provided with a V-shaped section; The lower mold unit (23) includes a flip plate (231), a connecting rod (234), a first guide slider (236), and a lower mold cylinder (232). The first guide slider (236) is slidably engaged with the first control guide groove (29). The first guide slider (236) is hinged to the flip plate (231) via the connecting rod (234). The flip plate (231) is fixedly connected to the lower mold cylinder (232). The feeding mechanism (50) and the pushing unit (26) are respectively arranged at the corresponding work stations along the circumference of the material transfer ring (22).

2. The pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns according to claim 1, characterized in that: The transfer power unit (30) includes a servo motor (31), a speed-changing gear (32), an internal gear ring (33), and an annular slider (215). The output end of the servo motor (31) meshes with the speed-changing gear (32) through a gear, and the speed-changing gear (32) meshes with the internal gear ring (33). The internal gear ring (33) is fixed to the annular slider (215). The annular slider (215) is fixedly connected to the material transfer ring (22). The annular slider (215) is slidably assembled in the annular slide rail (214) of the main mounting base (21).

3. The pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns according to claim 1, characterized in that: The lower mold unit (23) also includes a sealing plate (2323) and a return spring (2324); the sealing plate (2323) is located at the bottom of the inner cavity of the lower mold cylinder (232), and the two ends of the return spring (2324) are respectively connected to the sealing plate (2323) and the bottom surface of the lower mold cylinder (232).

4. The pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns according to claim 3, characterized in that: The bottom of the lower mold cylinder (232) is provided with a discharge through hole (2321), and the discharge through hole (2321) is opposite to the output end of the pusher unit (26).

5. The pressure-adaptive high-density precision pressing and molding equipment for molars according to claim 1, characterized in that: It also includes an upper mold position control mechanism (40); the upper mold position control mechanism (40) includes a telescopic unit (43), a positioning column (44) and a mounting frame (28); the output end of the telescopic unit (43) is connected to the mounting frame (28), the positioning column (44) passes through the top plate (42) and slides with the top plate (42), and the upper mold unit (24) is fixedly installed on the mounting frame (28).

6. The pressure-adaptive high-density precision pressing and molding equipment for molars according to claim 1, characterized in that: The material transfer ring (22) is fixed with several upper mold limiting guide rails (25), and the upper mold column (243) and the upper mold limiting guide rails (25) form a vertical sliding pair.

7. The pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns according to claim 1, characterized in that: The upper mold control console (242) is divided into a highest section, a pressure section and a rising section in the circumferential direction. The pressure section has a contour surface with continuously changing elevation.

8. The pressure-adaptive high-density precision pressing and molding equipment for ferrules according to claim 1, characterized in that: The feeding mechanism (50) includes a hopper (52), a screw conveyor unit (51), and a feeding nozzle (54); the hopper (52) is connected to the feeding end of the screw conveyor unit (51), the discharging end of the screw conveyor unit (51) is connected to the feeding nozzle (54), and the feeding nozzle (54) is oriented toward the V-shaped section of the first control guide groove (29).

9. The pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns according to claim 1, characterized in that: The flip plate (231) is hinged to the extension platform (27) of the material conveying ring (22) via a hinge (237); the two ends of the connecting rod (234) are respectively hinged to the first hinge seat (233) and the second hinge seat (235), the first hinge seat (233) is located on the flip plate (231), and the second hinge seat (235) is located on the first guide slider (236).

10. The pressure-adaptive high-density precision pressing and molding equipment for moxibustion columns according to claim 1, characterized in that: The processing table (10) has a conveyor belt unit (12) at one end of its surface. The conveyor belt unit (12) is arranged at the horizontal position of the lower mold cylinder (232). The finished product placement table (121) is fixedly connected to the conveyor belt of the conveyor belt unit (12).

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