Edge-covered powder sample pressing mold

Abstract

The invention discloses an edge-covered powder sample pressing mold, and relates to the field of powder sample detection related technologies, the edge-covered powder sample pressing mold comprises a workbench, a mounting rack is fixedly mounted on the workbench, a hydraulic push rod is fixedly mounted on the mounting rack, a push plate is fixedly mounted at the output end of the hydraulic push rod, and an upper mold is fixedly mounted on the push plate; a fixing ring is fixedly installed on the workbench, a lower die used in cooperation with the upper die is arranged in the fixing ring, rotating shafts are rotationally installed on the portions, on the two sides of the push plate, of the workbench, track grooves are formed in the rotating shafts, inserting rods are fixedly installed at the two ends of the push plate, and the inserting rods are used in cooperation with the track grooves in the same side. A cavity is formed in the workbench; according to the device, a formed powder sample can be quickly pushed out of the lower mold, so that the pressed and formed powder sample can be quickly demolded, quick demolding is achieved, and the subsequent detection efficiency of the performance of the powder sample is improved.

Description

Technical Field

[0001] The invention relates to the technical field related to powder sample detection, and in particular to a powder sample pressing die with edge covering. Background Art

[0002] The properties of powder include particle size distribution, density, fluidity, compactability, chemical composition, etc. These parameters have an important impact on the performance and quality of the final product. By pressing the powder sample through a mold and testing the pressed powder sample, problems in the production process can be discovered and corrected in time to avoid the appearance of unqualified products.

[0003] In the prior art, when testing the compactibility of powder, it is necessary to put the powder into a mold, then apply a certain pressure to compact it, and finally measure the density and strength after compaction. However, after some powders are compacted, due to their certain viscosity, the powder particles will stick to each other. This adhesion will cause the powder to form an adherent film on the surface of the mold, also known as a bonding layer. The bonding layer makes the powder tightly bonded to the mold surface, resulting in the phenomenon that the compacted powder sample is difficult to demold, thereby reducing the detection efficiency. At the same time, due to the friction between the powder particles and the uneven pressure transmission, gaps and uneven accumulation are likely to appear in the powder and the lower mold, which may cause the powder sample to be partially uncompacted, thereby affecting the quality effect of the powder sample pressing and increasing the subsequent detection error. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides a powder sample pressing die for edge wrapping.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention discloses a sample pressing die for edge-wrapped powder samples, comprising a workbench, a mounting frame is fixedly mounted on the workbench, and a hydraulic push rod is fixedly mounted on the mounting frame, a push plate is fixedly mounted on the output end of the hydraulic push rod, and an upper die is fixedly mounted on the push plate, a fixing ring is fixedly mounted on the workbench, and a lower die used in conjunction with the upper die is arranged in the fixing ring, rotating shafts are rotatably mounted on the workbench on both sides of the push plate, a track groove is provided on the rotating shaft, and plug rods are fixedly mounted on both ends of the push plate, and the plug rods are used in conjunction with the track grooves on the same side, a cavity is arranged in the workbench, the bottom end of one of the rotating shafts extends into the cavity and is provided with a demoulding component, and a fixing component for aligning and fixing the lower die is arranged on the other rotating shaft;

[0007] The track groove is composed of a spiral portion located at the top of the rotating shaft and a vertical portion located at the bottom of the rotating shaft. The intersection of the spiral portion and the vertical portion adopts a smooth transition connection. The demoulding assembly includes a demoulding unit arranged in the cavity and an oscillation unit arranged on the workbench.

[0008] As a preferred technical solution of the present invention, the demolding unit includes a rotating shaft in a rotating cavity, a toothed disk is fixedly installed on the top of the rotating shaft, a synchronous wheel is fixedly installed on the rotating shaft and one of the rotating shafts, a belt is sleeved between the two synchronous wheels and connected by belt transmission, a plurality of connecting shafts are rotatably installed in the cavity, a column gear is fixedly installed on each of the connecting shafts, the column gear is meshed with the toothed disk on the same side, a top plate is slidably installed in the lower mold, a plurality of sleeves are slidably installed in the lower mold, the top end of each sleeve is fixedly connected to the top plate, the bottom end of each sleeve is threadedly installed with a threaded rod, and the bottom end of the threaded rod is fixedly connected to the connecting shaft on the same side.

[0009] As a preferred technical solution of the present invention, a plurality of the connecting shafts are evenly distributed in an array along the circumference, and the number of the connecting shafts is consistent with the number of the sleeves.

[0010] As a preferred technical solution of the present invention, the oscillation unit includes a mounting plate slidably installed in the cavity, a connecting rod is rotatably installed on the workbench, a transmission gear is fixedly installed on the connecting rod and one of the connecting shafts, a disc is fixedly installed on the top of the connecting rod, a connecting column is eccentrically installed on the disc, and a slide rail is slidably installed on the outer surface of the connecting column, an outer cylinder is fixedly installed on the slide rail, and a striking rod is slidably installed in the outer cylinder, and a transmission part for driving the connecting rod to rotate is arranged on the mounting plate.

[0011] As a preferred technical solution of the present invention, the transmission member includes two first tooth plates fixedly mounted on the upper and lower sides of the mounting plate respectively, the two first tooth plates are staggered, the first tooth plates are meshed with the transmission gear, the first tooth plate located at the bottom is arranged on the side close to the connecting shaft, and the first tooth plate located at the top is meshed with the speed gear fixedly mounted on the connecting rod, and the number of teeth of the speed gear is greater than the number of teeth of the transmission gear.

[0012] As a preferred technical solution of the present invention, a limiting hole for cooperating with the outer cylinder is provided on the fixing ring, and the outer cylinder fits and slides in the limiting hole on the same side.

[0013] As a preferred technical solution of the present invention, a spring is fixedly installed in the outer tube, and two ends of the spring are respectively fixedly connected to the inner wall of the outer tube and one end of the striking rod inserted into the outer tube.

[0014] As a preferred technical solution of the present invention, the top end of the connecting column extends above the slide rail and is fixedly mounted with a limit plate.

[0015] As a preferred technical solution of the present invention, the fixing assembly includes a plurality of slide grooves provided on a fixing ring, a clamping rod is slidably installed in each of the slide grooves, a driving rod is fixedly installed on the clamping rod, a rotating ring is rotatably installed on the fixing ring, a plurality of driving grooves for cooperating with the driving rod are provided on the rotating ring, the driving rod slides in the driving groove on the same side, a gear ring is fixedly installed on the outer surface of the rotating ring, and a driving gear meshing with the gear ring is fixedly installed on the other rotating shaft.

[0016] As a preferred technical solution of the present invention, guide grooves are provided on both sides of the inner wall of the slide groove, and guide blocks are fixedly installed on both sides of the clamping rod, and the guide blocks fit and slide in the guide grooves on the same side.

[0017] The beneficial effects of the present invention are:

[0018] 1. This type of edge-wrapped powder sample pressing mold is provided with a demoulding unit. During the demoulding operation, the hydraulic push rod drives the upper mold and the insert rod to move upward through the push plate. When the insert rod moves upward to the spiral portion, it drives the rotating shaft to rotate in the opposite direction. The rotating shaft rotates in the opposite direction and drives the rotating shaft and the gear plate in the opposite direction under the transmission of the synchronous wheel and the belt, thereby driving a number of column gears and connecting shafts to follow the reverse rotation. The reverse rotation of the connecting shaft drives the threaded rod to follow the reverse rotation and makes the sleeve move upward. The upward movement of the sleeve drives the top plate to follow the upward movement, thereby quickly pushing the formed powder sample out of the lower mold, making it easy to quickly demould the pressed powder sample, achieving rapid demoulding, and improving the subsequent detection efficiency of the powder sample performance.

[0019] 2. This type of edge-wrapped powder sample pressing mold is equipped with an oscillation unit, an insertion rod, a track groove and a rotating shaft. During the pressing operation, when the insertion rod moves downward in the spiral part, one of the connecting shafts rotates, and the rotation of the connecting shaft drives the connecting rod to rotate through the transmission part. The rotation of the connecting rod drives the disc to follow the rotation. The rotation of the disc drives the outer cylinder and the striking rod to reciprocate through the connecting column and the slide rail, so that the striking rod cyclically strikes and oscillates the lower mold, eliminating gaps and uneven accumulation of powder in the lower mold, ensuring the subsequent pressing and molding effect of the powder, and improving the molding quality of the powder sample.

[0020] 3. This type of edge-wrapped powder sample pressing mold can make the connecting rod rotate at different speeds by setting a transmission part, so as to adjust the speed of the connecting rod. When the speed of the connecting rod changes, the frequency of the striking oscillation of the striking head on the lower mold will change accordingly, thereby avoiding the attenuation of the vibration densification effect on the sample powder when the striking rod strikes and oscillates the lower mold at a constant frequency, and then making the density of the sample powder in the lower mold more uniform as the oscillation frequency of the striking rod changes, so that the sample powder can be more evenly compacted, thereby improving the molding quality of the powder sample.

[0021] 4. This type of edge-wrapped powder sample pressing mold is equipped with an oscillation unit, an insertion rod, a track groove and a rotating shaft. When the demolding operation is performed, the hydraulic push rod drives the upper mold and the insertion rod to move upward through the push plate. When the insertion rod moves upward to the spiral part, it drives the rotating shaft to rotate in the opposite direction, and the connecting shaft follows the reverse rotation under the transmission of the synchronous wheel and the belt. The reverse rotation of the connecting shaft will drive the disc to reverse, so that the striking rod can still strike and oscillate the lower mold during the demolding operation, so that the powder sample pressed and formed in the lower mold is separated from the lower mold, which is convenient for demolding operation. The operation is simple and easy to use, and the demolding efficiency is further improved.

[0022] 5. This type of edge-wrapped powder sample pressing mold is equipped with a fixed component. During the mold closing and pressing process, the push plate moves downward to drive the insertion rod. The movement of the spiral part of the insertion rod in the track groove will drive the rotating shaft to rotate. The rotation of the rotating shaft drives the driving gear and the rotating ring on the same side to rotate. The rotation of the rotating ring drives the driving rod and the clamping rod to move through the driving groove, so that several clamping rods are close to each other to clamp and fix the lower mold, thereby ensuring the accuracy of the upper and lower molds when pressed together, and avoiding alignment deviation between the upper and lower molds. When the upper mold is pressed into the lower mold, the insertion rod moves to the vertical groove. At this time, the rotating shaft ensures that the original position does not rotate, so that the clamping rod can still stably clamp the lower mold, thereby ensuring the stability of the upper and lower molds when pressed together. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached picture:

[0025] Figure 1 It is a schematic diagram of the overall structure of a sample pressing die for edge-wrapped powder samples of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of a hydraulic push rod of a hemming powder sample pressing die of the present invention;

[0027] Figure 3 It is a schematic diagram of the working cross-sectional structure of a mold for pressing a powder sample with an edge wrapping according to the present invention;

[0028] Figure 4 It is a schematic diagram of the top plate structure of a mold for pressing a powder sample with an edge wrapping according to the present invention;

[0029] Figure 5 It is a schematic structural diagram of a demoulding unit of a hemmed powder sample pressing mold of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of an oscillating unit of a sample pressing die for edge-wrapped powder samples of the present invention;

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the outer cylinder of a powder sample pressing mold for edge wrapping of the present invention;

[0032] Figure 8 It is a schematic diagram of the track groove structure of a mold for pressing a powder sample with an edge wrapping according to the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of a fixing ring of a hemming powder sample pressing die of the present invention;

[0034] Fig.10 The present invention is a schematic diagram of the mounting plate structure of a powder sample pressing die for edge wrapping.

[0035] In the figure: 1, workbench; 2, mounting frame; 3, hydraulic push rod; 4, push plate; 5, upper mold; 6, fixing ring; 7, track groove; 71, spiral part; 72, vertical part; 8, demoulding assembly; 81, demoulding unit; 811, rotating shaft; 812, toothed disc; 813, synchronous wheel; 814, belt; 815, connecting shaft; 816, column gear; 817, top plate; 818, sleeve; 819, threaded rod; 82, oscillating unit; 821, mounting plate; 822, connecting rod; 82 3. Transmission gear; 824. Slide rail; 825. Outer cylinder; 826. Strike rod; 827. Spring; 828. First tooth plate; 829. Speed ​​change gear; 8210. Disc; 8211. Connecting column; 8212. Limiting hole; 9. Fixing assembly; 91. Slide groove; 92. Clamping rod; 93. Driving rod; 94. Rotating ring; 95. Driving groove; 96. Gear ring; 97. Driving gear; 98. Guide groove; 99. Guide block; 10. Lower die; 11. Rotating shaft; 12. Insert rod. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] Example: Figures 1 to 10As shown, the present invention is a powder sample compression mold for edge wrapping, comprising a workbench 1, a mounting frame 2 is fixedly mounted on the workbench 1, and a hydraulic push rod 3 is fixedly mounted on the mounting frame 2, a push plate 4 is fixedly mounted on the output end of the hydraulic push rod 3, and an upper die 5 is fixedly mounted on the push plate 4, a fixed ring 6 is fixedly mounted on the workbench 1, and a lower die 10 used in conjunction with the upper die 5 is arranged in the fixed ring 6, a rotating shaft 11 is rotatably mounted on the workbench 1 on both sides of the push plate 4, and a track groove 7 is opened on the rotating shaft 11, and an insertion rod 12 is fixedly mounted on both ends of the push plate 4, and an insertion rod 12 is fixedly mounted on both ends of the push plate 4. The rod 12 is used in conjunction with the track groove 7 on the same side. A cavity is opened in the workbench 1, in which the bottom end of one rotating shaft 11 extends into the cavity and is provided with a demoulding assembly 8, and the other rotating shaft 11 is provided with a fixing assembly 9 for aligning and fixing the lower mold 10; the track groove 7 is composed of a spiral portion 71 located at the top of the rotating shaft 11 and a vertical portion 72 located at the bottom of the rotating shaft 11, and a smooth transition connection is adopted at the intersection of the spiral portion 71 and the vertical portion 72, and the demoulding assembly 8 includes a demoulding unit 81 arranged in the cavity and an oscillation unit 82 arranged on the workbench 1.

[0038] In detail, when it is necessary to test the compaction performance of the powder, the powder to be tested is placed in the lower mold 10, and then the hydraulic push rod 3 is started. The hydraulic push rod 3 pushes the push plate 4 to drive the upper mold 5 to move downward. The push plate 4 moves downward to drive the rotating shafts 11 on both sides to rotate through the insertion rod 12 and the track groove 7, that is, when the insertion rod 12 moves in the spiral portion 71 in the track groove 7, it will drive the rotating shaft 11 to rotate. When the insertion rod 12 moves into the vertical portion 72, the rotating shaft 11 maintains the current state and does not rotate, thereby facilitating the subsequent operations of shaking, fixing and demolding the lower mold 10 through the demolding assembly 8 and the fixing assembly 9. The mechanical linkage is strong and no multiple power sources are required.

[0039] Among them, Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the demoulding unit 81 includes a rotating shaft 811 in a rotating cavity, a toothed disc 812 is fixedly installed on the top of the rotating shaft 811, a synchronous wheel 813 is fixedly installed on the rotating shaft 811 and one of the rotating shafts 11, a belt 814 is sleeved between the two synchronous wheels 813 and is connected through the belt 814, a plurality of connecting shafts 815 are rotatably installed in the cavity, a column gear 816 is fixedly installed on each connecting shaft 815, and the column gear 816 is meshed with the toothed disc 812 on the same side, a top plate 817 is slidably installed in the lower mold 10, a plurality of sleeves 818 are slidably installed in the lower mold 10, the top end of each sleeve 818 is fixedly connected to the top plate 817, the bottom end of each sleeve 818 is threadedly installed with a threaded rod 819, and the bottom end of the threaded rod 819 is fixedly connected to the connecting shaft 815 on the same side.

[0040] Specifically, during the powder sample pressing operation, the push plate 4 moves downward to drive the insertion rod 12 to move in the track groove 7. When the insertion rod 12 moves downward in the spiral portion 71 in the track groove 7, it will drive the rotating shaft 11 to rotate. The rotation of one of the rotating shafts 11 drives the rotating shaft 811 and the toothed disc 812 to rotate under the transmission of the synchronous wheel 813 and the belt 814. The rotation of the toothed disc 812 drives a number of column gears 816 and the connecting shaft 815 to rotate accordingly. The rotation of the connecting shaft 815 drives the threaded rod 819 to rotate accordingly and causes the sleeve 818 to move downward. The downward movement of the sleeve 818 drives the top plate 817 to move downward accordingly. When the upper mold 5 is pressed into the lower mold 10, the insertion rod 12 moves to the vertical portion 72, and the rotating shaft 11 and the top plate 817 maintain their current positions without moving, so as to facilitate the subsequent pressing operation of the powder in the lower mold 10. After the pressing is completed, the demolding operation needs to be performed. During operation, the hydraulic push rod 3 drives the upper mold 5 and the insertion rod 12 to move upward through the push plate 4. When the insertion rod 12 moves upward in the vertical portion 72, the rotating shaft 11 does not rotate; when the insertion rod 12 moves upward to the spiral portion 71, it drives the rotating shaft 11 to rotate in the opposite direction. The rotating shaft 11 rotates in the opposite direction and drives the rotating shaft 811 and the toothed disc 812 to rotate in the opposite direction under the transmission of the synchronous wheel 813 and the belt 814. The reverse rotation of the toothed disc 812 drives several column gears 816 and the connecting shaft 815 to rotate in the opposite direction. The reverse rotation of the connecting shaft 815 drives the threaded rod 819 to rotate in the opposite direction and makes the sleeve 818 move upward. The upward movement of the sleeve 818 drives the top plate 817 to move upward, thereby quickly pushing the formed powder sample out of the lower mold 10, and then performing subsequent testing, which is convenient for demolding the pressed powder sample and improving the testing efficiency of the powder sample performance.

[0041] Among them, Figure 4 and Figure 5 As shown, a plurality of connecting shafts 815 are evenly distributed in an array along the circumference, and the number of connecting shafts 815 is consistent with the number of sleeves 818, which can ensure the stability of the top plate 817 during movement, avoid the top plate 817 from being offset and tilted due to uneven force during movement, and ensure the stability of the top plate 817 during movement, so that the top plate 817 can smoothly push the formed powder sample out of the lower mold 10.

[0042] Among them, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig.10As shown, the oscillation unit 82 includes a mounting plate 821 slidably mounted in the cavity, a connecting rod 822 is rotatably mounted on the workbench 1, a transmission gear 823 is fixedly mounted on the connecting rod 822 and one of the connecting shafts 815, a disc 8210 is fixedly mounted on the top of the connecting rod 822, a connecting column 8211 is eccentrically mounted on the disc 8210, and a slide rail 824 is slidably mounted on the outer surface of the connecting column 8211, an outer cylinder 825 is fixedly mounted on the slide rail 824, and a striking rod 826 is slidably mounted in the outer cylinder 825, and a transmission member for driving the connecting rod 822 to rotate is provided on the mounting plate 821.

[0043] In detail, during the pressing operation, when the insertion rod 12 moves downward in the spiral portion 71, the connecting shaft 815 rotates through the transmission member to drive the connecting rod 822 to rotate, and the connecting rod 822 rotates to drive the disc 8210 to rotate accordingly. The disc 8210 rotates through the connecting column 8211 and the slide rail 824 to drive the outer cylinder 825 and the striking rod 826 to reciprocate, so that the striking rod 826 cyclically strikes and vibrates the lower mold 10, which can eliminate the gaps and uneven accumulation of powder in the lower mold 10, and ensure the subsequent pressing and molding effect of the powder. When the upper mold 5 is pressed into the lower mold 10, the insertion rod 12 moves downward to the vertical portion 72, and the rotating shaft 11 maintains the current position without rotating. At this time, the striking rod 826 does not move and stops striking the lower mold 1 0's striking and oscillating effect can be avoided by preventing the striking rod 826 from striking and oscillating the lower mold 10 during the pressing process and affecting the pressing effect. During the demolding operation, the hydraulic push rod 3 drives the upper mold 5 and the insert rod 12 to move upward through the push plate 4. When the insert rod 12 moves upward to the spiral portion 71, it drives the rotating shaft 11 and the transmission gear 823 to rotate in the opposite direction, so that the mounting plate 821 is reset to facilitate the next pressing operation. In addition, during the resetting process, the mounting plate 821 can also drive the disc 8210 to reverse through the transmission member, so that the striking rod 826 can still strike and oscillate the lower mold 10 during the demolding operation, so that the powder sample compacted in the lower mold 10 is separated from the lower mold 10, which is convenient for the demolding operation. The operation is simple and easy to use, and the demolding efficiency is further improved.

[0044] Among them, Figure 3 , Figure 4 , Figure 6 and Fig.10 As shown, the transmission member includes two first tooth plates 828 fixedly mounted on the upper and lower sides of the mounting plate 821 respectively, the two first tooth plates 828 are staggered, the first tooth plates 828 are meshed with the transmission gear 823, the lower first tooth plate 828 is arranged on the side close to the connecting shaft 815, and the upper first tooth plate 828 is meshed with the speed gear 829 fixedly mounted on the connecting rod 822, and the number of teeth of the speed gear 829 is greater than the number of teeth of the transmission gear 823.

[0045] Specifically, during the pressing operation, when the insert rod 12 moves downward in the spiral portion 71, one of the connecting shafts 815 rotates to drive the transmission gear 823 on the same side to rotate accordingly, and the transmission gear 823 rotates to drive the first tooth plate 828 below to move, and the movement of the first tooth plate 828 drives the mounting plate 821 and the first tooth plate 828 located above to move, and the movement of the first tooth plate 828 drives the speed gear 829 and the connecting rod 822 to rotate, and the rotation of the connecting rod 822 can drive the striking rod 826 to strike and vibrate the lower mold 10. At the same time, with the movement of the mounting plate 821, when the first tooth plate 828 located above is disengaged from the speed gear 829, the first tooth plate 828 located below is disengaged from the speed gear 829. A tooth plate 828 is in meshing contact with the transmission gear 823 on the connecting rod 822. At this time, the connecting rod 822 is driven by the first tooth plate 828 located below and the transmission gear 823 on the same side, so that the connecting rod 822 rotates at different speeds, thereby realizing the adjustment of the speed of the connecting rod 822. The speed of the connecting rod 822 changes, so that the frequency of the impact oscillation of the striking head on the lower mold 10 changes accordingly, thereby avoiding the attenuation of the vibration densification effect on the sample powder when the striking rod 826 strikes and oscillates the lower mold 10 at a constant frequency, and then the density of the sample powder in the lower mold 10 can be more uniform as the oscillation frequency of the striking rod 826 changes, so that the sample powder can be more evenly compacted.

[0046] Among them, Fig. 9 As shown, a limiting hole 8212 is provided on the fixing ring 6 for use with the outer cylinder 825. The outer cylinder 825 slides in the limiting hole 8212 on the same side. The limiting hole 8212 can be used to limit and guide the outer cylinder 825 to ensure the stability of the reciprocating motion of the outer cylinder 825 and the striking rod 826.

[0047] Further, such as Figure 7 As shown, a spring 827 is fixedly installed in the outer cylinder 825, and the two ends of the spring 827 are respectively fixedly connected to the inner wall of the outer cylinder 825 and one end of the striking rod 826 inserted into the outer cylinder 825. By setting the spring 827, the striking rod 826 can smoothly perform the striking and shaking operation on the lower mold 10, avoiding interference between the striking rod 826 and the lower mold 10.

[0048] Further, such as Figure 7 As shown, the top end of the connecting column 8211 extends to above the slide rail 824 and is fixedly installed with a limit plate, which can ensure the stability of the connection between the connecting column 8211 and the slide rail 824 and prevent the connecting column 8211 from detaching from the slide rail 824.

[0049] Among them, Figure 1 , Figure 2 , Figure 3 , Figure 8 and Fig. 9As shown, the fixing assembly 9 includes a plurality of slide grooves 91 provided on the fixing ring 6, a clamping rod 92 is slidably installed in each slide groove 91, a driving rod 93 is fixedly installed on the clamping rod 92, a rotating ring 94 is rotatably installed on the fixing ring 6, a plurality of driving grooves 95 for cooperating with the driving rod 93 are provided on the rotating ring 94, the driving rod 93 slides in the driving groove 95 on the same side, a gear ring 96 is fixedly installed on the outer surface of the rotating ring 94, and a driving gear 97 meshing with the gear ring 96 is fixedly installed on the other rotating shaft 11.

[0050] Specifically, during the mold closing and pressing process, the push plate 4 moves downward and drives the insertion rod 12 to move in the track groove 7. When the spiral portion 71 of the insertion rod 12 in the track groove 7 moves, the rotating shaft 11 is driven to rotate. The rotation of the rotating shaft 11 drives the driving gear 97 on the same side to follow the rotation. The driving gear 97 rotates through the gear ring 96 to drive the rotating ring 94 to rotate. The rotating ring 94 rotates through the driving groove 95 and drives the driving rod 93 and the clamping rod 92 to move with the cooperation of the slide groove 91, so that several clamping rods 92 are close to each other to clamp and fix the lower mold 10, ensuring the accuracy of the upper mold 5 and the lower mold 10 when pressed together, and avoiding the occurrence of alignment deviation between the upper mold 5 and the lower mold 10. When the upper mold 5 is pressed into the lower mold 10, the insertion rod 12 moves to the vertical groove. At this time, the rotating shaft 11 ensures that the original position does not rotate. The movement allows the clamping rod 92 to still stably clamp the lower mold 10, ensuring the stability of the upper mold 5 and the lower mold 10 during pressing. After the pressing is completed, when the demoulding operation is required, the hydraulic push rod 3 drives the upper mold 5 and the insertion rod 12 to move upward through the push plate 4. When the insertion rod 12 moves upward in the vertical portion 72, the rotating shaft 11 does not rotate, and the clamping rod 92 can still stably clamp the lower mold 10 to ensure the smooth progress of the demoulding operation. When the insertion rod 12 moves upward to the spiral portion 71, it will drive the driving gear 97 to reverse. The reverse driving gear 97 can drive several clamping rods 92 to move away from each other and reset, thereby releasing the fixation of the lower mold 10, which is convenient for the next pressing operation or replacement of the lower mold 10 according to actual use needs. The operation is simple, easy to use, and practical.

[0051] Among them, Figure 8 and Fig. 9 As shown, guide grooves 98 are provided on both sides of the inner wall of the slide groove 91, and guide blocks 99 are fixedly installed on both sides of the clamping rod 92. The guide blocks 99 slide in the guide grooves 98 on the same side. By using the guide blocks 99 and the guide grooves 98 in coordination, the stability of the clamping rod 92 during movement can be further improved.

[0052] During operation, when it is necessary to test the compaction performance of the powder, the powder to be tested is placed in the lower mold 10, and then the hydraulic push rod 3 is started. The hydraulic push rod 3 pushes the push plate 4 to drive the upper mold 5 to move downward. When the insert rod 12 moves in the spiral portion 71 in the track groove 7, it will drive the rotating shaft 11 to rotate. The rotation of one of the rotating shafts 11 drives the rotating shaft 811 and the toothed plate 812 to rotate under the transmission of the synchronous wheel 813 and the belt 814. The rotation of the toothed plate 812 drives several column gears 816 and the connecting shaft 815 to rotate accordingly. The rotation of the connecting shaft 815 drives the transmission gear 823 on the same side to rotate accordingly. The rotation of the transmission gear 823 drives the first tooth plate 828 below to move. The movement of the first tooth plate 828 drives the mounting plate 821 and the first tooth plate 828 located above to move. The movement of the first tooth plate 828 drives the speed change gear 829 and the connecting rod 82 2 rotates, the connecting rod 822 rotates to drive the disc 8210 to rotate accordingly, the disc 8210 rotates through the connecting column 8211 and the slide rail 824 to drive the outer cylinder 825 and the striking rod 826 to reciprocate, so that the striking rod 826 reciprocates to strike and vibrate the lower die 10, eliminate the gaps and uneven accumulation of powder in the lower die 10, and ensure the subsequent pressing and molding effect of the powder, the other rotating shaft 11 rotates to drive the same side driving gear 97 to rotate accordingly, the driving gear 97 rotates through the gear ring 96 to drive the rotating ring 94 to rotate, the rotating ring 94 rotates through the driving groove 95 and drives the driving rod 93 and the clamping rod 92 to move under the cooperation of the slide groove 91, so that a plurality of clamping rods 92 are close to each other to clamp and fix the lower die 10, to ensure the accuracy of the upper die 5 and the lower die 10 when they are pressed together, and to avoid the alignment deviation between the upper die 5 and the lower die 10;

[0053] When the upper die 5 is pressed into the lower die 10, the insertion rod 12 moves into the vertical groove. At this time, the rotating shaft 11 ensures that the original position does not rotate, so that the clamping rod 92 can still stably clamp the lower die 10, ensuring the stability of the upper die 5 and the lower die 10 during the pressing, and the striking rod 826 does not move to stop striking and oscillating the lower die 10, avoiding the striking rod 826 striking and oscillating the lower die 10 during the pressing process and affecting the pressing effect;

[0054] After the pressing is completed, when the demoulding operation is required, the hydraulic push rod 3 drives the upper mold 5 and the insertion rod 12 to move upward through the push plate 4. When the insertion rod 12 moves upward in the vertical portion 72, the rotating shaft 11 does not rotate, and the clamping rod 92 can still stably clamp the lower mold 10 to ensure the smooth demoulding operation.

[0055] When the insert rod 12 moves upward to the spiral portion 71, it drives the rotating shaft 11 to rotate in the opposite direction. One of the rotating shafts 11 rotates in the opposite direction and drives the rotating shaft 811 and the toothed disc 812 to rotate in the opposite direction under the transmission of the synchronous wheel 813 and the belt 814. The toothed disc 812 rotates in the opposite direction and drives a plurality of column gears 816 and the connecting shaft 815 to rotate in the opposite direction. The connecting shaft 815 rotates in the opposite direction and drives the threaded rod 819 to rotate in the opposite direction and causes the sleeve 818 to move upward. The sleeve 818 moves upward and drives the top plate 817 to move upward, thereby quickly pushing the molded powder sample out of the lower mold 10, and then performing subsequent testing, which is convenient for demolding the pressed powder sample and improving the powder quality. The detection efficiency of the final sample performance is improved. At the same time, the reverse rotation of the connecting shaft 815 will drive the disc 8210 to reverse, so that the striking rod 826 can still strike and vibrate the lower mold 10 during the demolding operation, so that the powder sample compacted in the lower mold 10 is separated from the lower mold 10, which is convenient for demolding operation. The operation is simple and easy to use, and the demolding efficiency is further improved; the reversal of the other rotating shaft 11 will drive the driving gear 97 to reverse, and the reversal of the driving gear 97 can drive several clamping rods 92 to move away from each other and reset, thereby releasing the fixation of the lower mold 10, which is convenient for the next pressing operation or replacement of the lower mold 10 according to actual use needs. It is simple to operate, easy to use, and highly practical.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powder sample pressing die for edge-wrapped powder samples, comprising a workbench (1), characterized in that: The workbench (1) is fixedly mounted with a mounting frame (2), and a hydraulic push rod (3) is fixedly mounted on the mounting frame (2); a push plate (4) is fixedly mounted on the output end of the hydraulic push rod (3), and an upper mold (5) is fixedly mounted on the push plate (4); a fixing ring (6) is fixedly mounted on the workbench (1), and a lower mold (10) for use with the upper mold (5) is arranged inside the fixing ring (6); and two rotatable push rods (1) are mounted on the workbench (1) on both sides of the push plate (4). A rotating shaft (11) is provided with a track groove (7), and both ends of the push plate (4) are fixedly mounted with an insertion rod (12), and the insertion rod (12) is used in conjunction with the track groove (7) on the same side. A cavity is provided in the workbench (1), and the bottom end of one of the rotating shafts (11) extends into the cavity and is provided with a demoulding component (8), and the other rotating shaft (11) is provided with a fixing component (9) for aligning and fixing the lower mold (10); The track groove (7) is composed of a spiral portion (71) located at the top of the rotating shaft (11) and a vertical portion (72) located at the bottom of the rotating shaft (11); the intersection of the spiral portion (71) and the vertical portion (72) is connected by a smooth transition; and the demoulding assembly (8) comprises a demoulding unit (81) arranged in the cavity and an oscillating unit (82) arranged on the workbench (1).

2. The edge-wrapped powder sample pressing mold according to claim 1, characterized in that: The demoulding unit (81) comprises a rotating shaft (811) in a rotating cavity, a toothed disc (812) is fixedly mounted on the top of the rotating shaft (811), a synchronous wheel (813) is fixedly mounted on the rotating shaft (811) and one of the rotating shafts (11), a belt (814) is sleeved between the two synchronous wheels (813) and the two synchronous wheels (813) are connected by the belt (814), and a plurality of connecting shafts (815) are rotatably mounted in the cavity, and each of the connecting shafts (815) is fixedly mounted with a toothed disc (812). A column gear (816) is meshed with the toothed disc (812) on the same side. A top plate (817) is slidably mounted in the lower mold (10). A plurality of sleeves (818) are slidably mounted in the lower mold (10). The top end of each sleeve (818) is fixedly connected to the top plate (817). The bottom end of each sleeve (818) is threadedly mounted with a threaded rod (819), and the bottom end of each threaded rod (819) is fixedly connected to the connecting shaft (815) on the same side.

3. The edge-wrapped powder sample pressing mold according to claim 2, characterized in that: The plurality of connecting shafts (815) are evenly distributed in an array along the circumference, and the number of the connecting shafts (815) is consistent with the number of the sleeves (818).

4. The edge-wrapped powder sample pressing mold according to claim 2, characterized in that: The oscillation unit (82) comprises a mounting plate (821) slidably mounted in the cavity, a connecting rod (822) rotatably mounted on the workbench (1), a transmission gear (823) fixedly mounted on the connecting rod (822) and one of the connecting shafts (815), a disc (8210) fixedly mounted on the top of the connecting rod (822), a connecting column (8211) eccentrically mounted on the disc (8210), and a slide rail (824) slidably mounted on the outer surface of the connecting column (8211), an outer cylinder (825) fixedly mounted on the slide rail (824), and a striking rod (826) slidably mounted inside the outer cylinder (825), and a transmission member for driving the connecting rod (822) to rotate is provided on the mounting plate (821).

5. The edge-wrapped powder sample pressing mold according to claim 4, characterized in that: The transmission member includes two first tooth plates (828) respectively fixedly mounted on the upper and lower sides of the mounting plate (821), the two first tooth plates (828) being arranged alternately, the first tooth plates (828) being meshed with the transmission gear (823), the first tooth plate (828) located at the bottom being arranged on the side close to the connecting shaft (815), the first tooth plate (828) located at the top being meshed with the speed change gear (829) fixedly mounted on the connecting rod (822), the number of teeth of the speed change gear (829) being greater than the number of teeth of the transmission gear (823).

6. The edge-wrapped powder sample pressing mold according to claim 5, characterized in that: The fixing ring (6) is provided with a limiting hole (8212) used in conjunction with the outer cylinder (825), and the outer cylinder (825) fits and slides in the limiting hole (8212) on the same side.

7. The edge-wrapped powder sample pressing mold according to claim 5, characterized in that: A spring (827) is fixedly installed in the outer tube (825), and two ends of the spring (827) are respectively fixedly connected to the inner wall of the outer tube (825) and one end of the striking rod (826) inserted into the outer tube (825).

8. The edge-wrapped powder sample pressing die according to claim 4, characterized in that: The top end of the connecting column (8211) extends above the slide rail (824) and is fixedly mounted with a limit plate.

9. The edge-wrapped powder sample pressing mold according to claim 4, characterized in that: The fixing assembly (9) comprises a plurality of slide grooves (91) provided on the fixing ring (6), a clamping rod (92) being slidably mounted in each of the slide grooves (91), a driving rod (93) being fixedly mounted on the clamping rod (92), a rotating ring (94) being rotatably mounted on the fixing ring (6), a plurality of driving grooves (95) being provided on the rotating ring (94) for use with the driving rod (93), the driving rod (93) slidingly fitting in the driving grooves (95) on the same side, a gear ring (96) being fixedly mounted on the outer surface of the rotating ring (94), and a driving gear (97) meshing with the gear ring (96) being fixedly mounted on the other rotating shaft (11).

10. The edge-wrapped powder sample pressing die according to claim 9, characterized in that: Guide grooves (98) are provided on both sides of the inner wall of the slide groove (91), and guide blocks (99) are fixedly installed on both sides of the clamping rod (92), and the guide blocks (99) fit and slide in the guide grooves (98) on the same side.

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