A tablet press with improved mold stability and sealing performance

Abstract

The present invention discloses a tablet press for improving mold stability and sealing, belonging to the technical field of tablet presses. The tablet press for improving mold stability and sealing comprises a base, a workbench is fixedly connected to the lower upper surface of the base, an upper hydraulic rod is fixedly connected to the upper lower surface of the base, an upper pressing platform is fixedly connected to the lower end of the upper hydraulic rod, a plurality of upper molds are fixedly connected to the lower surface of the upper pressing platform, a locking mechanism is arranged in the base, a powder distribution mechanism is arranged on the upper surface of the workbench, and a plurality of lower molds are slidably connected to the upper surface of the workbench. The present invention greatly improves the stability and sealing of the mold in tablet pressing operation through the use of an upper mold, a lower mold, a locking mechanism and a powder distribution mechanism, and at the same time facilitates the disassembly and assembly of the mold, and does not require precise alignment when installing the mold, which greatly improves the experimental efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of tablet presses, and in particular relates to a tablet press with improved mold stability and sealing performance. Background Art

[0002] A tablet press is a device used to press powdered or granular materials into tablets or other solid forms. It is widely used in the pharmaceutical, food, chemical and other industries to produce tablets, nutritional tablets, candies and other products. The working principle of a tablet press is to squeeze the material through the upper and lower punches, fill it into the mold hole and form a compact tablet, and then take the tablet out of the mold to complete the entire pressing process. Tablet presses are also divided into rotary tablet presses and single-punch tablet presses. Rotary tablet presses have high production efficiency and are suitable for mass production, while single-punch tablet presses have low production efficiency and are suitable for small-batch production in the laboratory.

[0003] However, before large-scale production of products, small-scale experiments are required. The shape and dosage of the products need to be tested multiple times. Traditional single-punch tablet presses for experiments need to repeatedly disassemble and assemble molds of different specifications when facing products with different requirements, resulting in low experimental efficiency. At the same time, if the mold is not aligned during installation, it is easy to cause friction between the punch and the punch hole, causing damage to the mold and reducing the service life of the mold. Therefore, a lot of time needs to be spent on alignment when installing the mold, making the experimental efficiency even lower. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a tablet press with improved mold stability and sealing performance.

[0005] The technical solution adopted to solve the above technical problems is: comprising a base, the lower upper surface of the base is fixedly connected with a workbench, the upper lower surface of the base is fixedly connected with an upper hydraulic rod, the lower end of the upper hydraulic rod is fixedly connected with an upper pressing platform, the lower surface of the upper pressing platform is fixedly connected with a plurality of upper molds, a locking mechanism is arranged in the base, a powder distributing mechanism is arranged on the upper surface of the workbench, and a plurality of lower molds are slidably connected through the upper surface of the workbench;

[0006] The base is fixedly connected with a load-bearing plate, and the locking mechanism includes a pair of first locking plates slidably arranged between the load-bearing plate and the workbench, a second locking plate being slidably connected between the pair of first locking plates, one end of the pair of first locking plates being fixedly connected with a plurality of fourth springs, one end of the plurality of fourth springs away from the first locking plate being fixedly connected with the second movable plate, both ends of the second movable plate being slidably connected with a second oblique rod, the upper end of the second oblique rod being fixedly connected with a second vertical rod, the end of the second locking plate away from the second movable plate being fixedly connected with a plurality of third springs, the end of the third spring away from the second locking plate being fixedly connected with the first movable plate, the two ends of the first movable plate being slidably connected with the first oblique rod, and the upper end of the first oblique rod being fixedly connected with the first vertical rod.

[0007] Through the above technical scheme, when the upper pressing platform is pressed down, the buffer block is pushed downward, and the buffer block drives the diagonal rod to move through the vertical rod, so that the first movable plate and the second movable plate move to both sides, and the first locking plate and the second locking plate are separated to both sides, so that the locking holes are staggered, and the locking holes are stuck in the locking groove to clamp the lower mold and fix it, thereby improving the stability during tableting.

[0008] Furthermore, a control panel is fixedly connected to one side of the base, a plurality of buttons are fixedly connected to the control panel, a screen is fixedly connected to the side of the base close to the control panel, a lower hydraulic rod is fixedly connected inside the base, and a top plate is fixedly connected to the upper end of the lower hydraulic rod.

[0009] Through the above technical solution, the top plate can be driven to rise upwards by the lower hydraulic rod, so that the top plate drives the ejector rod to eject the tablets.

[0010] Furthermore, the workbench includes a fixed platform fixedly connected to the base, one end of the fixed platform is provided with a plurality of blanking holes, the lower ends of the plurality of blanking holes are fixedly connected with a blanking slide, and the upper surface of the fixed platform is provided with a plurality of first slide grooves.

[0011] Through the above technical solution, tablets of different specifications can be pushed into corresponding drop holes in different rows and columns, thereby facilitating the collection and arrangement of the tablets.

[0012] Furthermore, the powder spreading mechanism includes a pair of magnetically coupled rodless cylinders fixedly connected to the upper surface of the fixed table, a powder spreading table is arranged between the pair of magnetically coupled rodless cylinders, the output ends of the magnetically coupled rodless cylinders are fixedly connected to the powder spreading table, a plurality of material spreading boxes are fixedly connected to the powder spreading table, a plurality of first slide rails are fixedly connected to the lower end of the powder spreading table, the first slide grooves and the first slide rails slide in cooperation with each other, a scraper is fixedly connected in the material spreading box, and a plurality of push-piece grooves are provided on the side of the powder spreading table close to the scraper.

[0013] Through the above technical solution, by arranging a plurality of scattering boxes and push-piece grooves on the powder distribution mechanism, each column on the workbench can produce products of different shapes or different powder ratios, and collect them in different drop chutes respectively, which can greatly improve the experimental efficiency.

[0014] Furthermore, the upper pressing platform includes a mounting plate fixedly connected to the upper hydraulic rod, the lower end of the mounting plate is fixedly connected to a fixing plate, the lower end of the fixing plate is fixedly connected to a plurality of locking blocks, the lower end of the fixing plate is fixedly connected to a plurality of sliding rods, the sliding rods penetrate through the sliding connection fixing platform, a first groove is provided in the locking block, and a second groove is provided on the side of the first groove.

[0015] Through the above technical solution, the upper mold can be simply installed in the locking block, and the plug on the upper mold can be inserted into the first groove. At this time, the first spring pushes the steel ball into the second groove to complete the locking installation of the upper mold. At the same time, the setting of the slide rod can make the upper pressing platform more stable when pressing down.

[0016] Furthermore, the upper mold includes a push plate, the upper end of the push plate is fixedly connected to a plug, steel balls are slidably connected to the four sides of the plug, a first spring is fixedly connected between the steel balls and the plug, the lower end of the push plate is fixedly connected to a fixing rod, the end of the fixing rod away from the push plate is rotatably connected to a punch, the lower end of the push plate is fixedly connected to a second spring, the end of the second spring away from the push plate is fixedly connected to a fixing ring, the lower end of the fixing ring is rotatably connected to a positioning sleeve, a plurality of second slide rails are fixedly connected in the positioning sleeve, a plurality of second slide grooves are provided on the punch, the second slide rails and the second slide grooves slidably cooperate with each other, and a plurality of positioning blocks are fixedly connected to the lower end of the positioning sleeve.

[0017] Through the above technical solution, the upper mold can be locked and installed by pushing the steel ball into the second groove through the first spring. When the upper mold needs to be removed, it only needs to be pulled downward. By using the second spring and the positioning sleeve, when the upper press table moves downward, the positioning block is first matched with the positioning groove to align and close the positioning sleeve and the sleeve. At this time, the positioning sleeve drives the punch to rotate to the correct position through the second slide rail. At the same time, the punch is guided by the positioning sleeve when moving downward to avoid loss caused by friction between the punch and the sleeve, thereby improving the stability of the mold and eliminating the need for precise positioning during installation, which greatly reduces the difficulty of operation. Closing the positioning sleeve and the sleeve first can effectively improve the sealing of the mold and avoid powder splashing during tableting operations.

[0018] Furthermore, the lower mold includes a sleeve that passes through a sliding connection fixed table, the sleeve is provided with a plurality of locking grooves, the lower end of the sleeve is fixedly connected with a round table, the round table passes through a sliding connection load-bearing plate, the upper surface of the sleeve is provided with a plurality of positioning grooves, a push rod is slidably connected in the sleeve, the lower end of the push rod is fixedly connected with a connecting rod, and the lower end of the connecting rod is fixedly connected with a push block.

[0019] Through the above technical solution, the sleeve can be locked by the locking mechanism through the setting of the locking groove, and the punch can enter the sleeve more accurately through the setting of the positioning groove to avoid wear caused by mutual friction.

[0020] Furthermore, the first locking plate and the second locking plate are each provided with a plurality of locking holes, the lower surfaces of the sides of the first locking plate and the second locking plate are rotatably connected to a plurality of rollers, the upper ends of the second vertical rod and the first vertical rod are fixedly connected to buffer blocks, the lower surface of the buffer block is fixedly connected to a gas spring, and one end of the gas spring away from the buffer block is fixedly connected to the workbench.

[0021] Through the above technical solution, after the upper pressing platform moves up, the gas spring pushes the buffer block to move upward, so that the first locking plate and the second locking plate move back to the middle, so that the locking holes are aligned and disengaged from the locking grooves, so that the lower mold is in a free state and is easy to remove.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention sets a locking mechanism. When the upper pressing platform is pressed downward, the buffer block is pushed downward, and the buffer block drives the diagonal rod to move through the vertical rod, so that the first movable plate and the second movable plate move to both sides, so that the first locking plate and the second locking plate are separated to both sides, so that the locking holes are staggered, and the locking holes are stuck in the locking groove to clamp and fix the lower mold, thereby improving the stability during tableting. After the upper pressing platform is moved up, the gas spring pushes the buffer block to move upward, so that the first locking plate and the second locking plate move toward the middle again, so that the locking holes are aligned and disengaged from the locking groove, so that the lower mold is in a free state and is easy to remove; (2) The present invention sets a locking block on the upper pressing platform. By inserting the plug on the upper mold into the first groove, the first spring pushes the steel ball into the second groove, so that the upper mold can be locked and installed. When it is necessary to disassemble When removing the upper mold, it is only necessary to pull the upper mold downward. By using the second spring and the positioning sleeve, when the upper press table moves downward, the positioning block is first matched with the positioning groove to align and close the positioning sleeve with the sleeve. At this time, the positioning sleeve drives the punch to rotate to the correct position through the second slide rail. At the same time, the punch is guided by the positioning sleeve when moving downward to avoid friction between the punch and the sleeve. The stability of the mold can be improved, and there is no need for precise positioning during installation, which greatly reduces the difficulty of operation. The closing of the positioning sleeve and the sleeve first can effectively improve the sealing of the mold and avoid powder splashing during tableting. (3) The present invention provides a plurality of first slide grooves on the workbench and a plurality of material spreading boxes and tablet pushing grooves on the powder distribution mechanism, so that each column on the workbench can produce products of different shapes or different powder ratios, and collect them in different blanking slides respectively, which can greatly improve the experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-view structural diagram of a tablet press for improving mold stability and sealing performance according to the present invention;

[0024] Figure 2 It is a structural diagram from a second perspective of a tablet press for improving mold stability and sealing performance of the present invention;

[0025] Figure 3 This is a powder distribution mechanism and base structure diagram of a tablet press machine for improving mold stability and sealing performance according to the present invention;

[0026] Figure 4 It is a cross-sectional view of a powder distribution mechanism of a tablet press for improving mold stability and sealing performance according to the present invention;

[0027] Figure 5 This is a diagram of the internal structure of a base of a tablet press for improving mold stability and sealing performance according to the present invention;

[0028] Figure 6 yes Figure 5 A magnified image of point A;

[0029] Figure 7 This is a structural diagram of a locking mechanism of a tablet press for improving mold stability and sealing performance according to the present invention;

[0030] Figure 8 It is an exploded view of a locking mechanism of a tablet press for improving mold stability and sealing performance of the present invention;

[0031] Fig. 9 This is a structural diagram of an upper pressing table of a tablet press for improving mold stability and sealing performance according to the present invention;

[0032] Fig.10 It is a cross-sectional view of an upper pressing table of a tablet pressing machine for improving mold stability and sealing performance according to the present invention;

[0033] Fig.11 yes Fig.10 The enlarged view of point B;

[0034] Fig.12 It is an exploded view of an upper mold of a tablet press for improving mold stability and sealing performance according to the present invention;

[0035] Fig.13 This is a structural diagram of a positioning sleeve of a tablet press for improving mold stability and sealing performance of the present invention;

[0036] Fig.14 This is an exploded view of a lower mold of a tablet press for improving mold stability and sealing performance according to the present invention;

[0037] Fig.15 The present invention is a cross-sectional view of a lower mold of a tablet press for improving mold stability and sealing performance.

[0038] 1. Base; 2. Workbench; 21. Fixed table; 22. Blanking hole; 23. Blanking slide; 24. First slide; 3. Powder distribution mechanism; 31. Magnetic coupling rodless cylinder; 32. Powder distribution table; 33. Sprinkler box; 34. Push plate groove; 35. First slide rail; 36. Scraper; 4. Upper hydraulic rod; 5. Upper press table; 51. Mounting plate; 52. Fixed plate; 53. Locking block; 54. First groove; 55. Second groove; 56. Slide rod; 6. Upper mold; 61. Push plate; 62. Plug; 63. First spring; 64. Steel ball; 65. Fixed rod; 66. Punch; 67. Second spring; 68. Fixed ring; 69. Positioning sleeve; 610. Second slide Rail; 611, positioning block; 612, second slide groove; 7, lower mold; 71, sleeve; 72, locking groove; 73, positioning groove; 74, ejector rod; 75, connecting rod; 76, ejector block; 77, round table; 8, locking mechanism; 81, first locking plate; 82, second locking plate; 83, third spring; 84, first movable plate; 85, first oblique rod; 86, first vertical rod; 87, fourth spring; 88, second movable plate; 89, second oblique rod; 810, second vertical rod; 811, buffer block; 812, roller; 813, locking hole; 814, gas spring; 9, load-bearing plate; 10, control panel; 11, button; 12, screen; 13, lower hydraulic rod; 14, ejector plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] like Figure 1-Figure 15 As shown, a tablet press for improving mold stability and sealing performance of the present embodiment includes a base 1, an upper hydraulic rod 4 is fixedly connected to the lower surface of the upper part of the base 1, a control panel 10 is fixedly connected to one side of the base 1, a plurality of buttons 11 are fixedly connected to the control panel 10, a screen 12 is fixedly connected to one side of the base 1 close to the control panel 10, a lower hydraulic rod 13 is fixedly connected inside the base 1, a top plate 14 is fixedly connected to the upper end of the lower hydraulic rod 13, and the top plate 14 is driven to rise by the lower hydraulic rod 13, so that the top plate 14 can drive the connecting rod 75 to move upward through the top block 76.

[0041] like Figure 2 and Figure 3As shown, a workbench 2 is fixedly connected to the lower upper surface of the base 1, and the workbench 2 includes a fixed table 21 fixedly connected to the base 1, and a plurality of blanking holes 22 are opened at one end of the fixed table 21, and the lower ends of the plurality of blanking holes 22 are fixedly connected with a blanking chute 23, and a plurality of first chutes 24 are opened on the upper surface of the fixed table 21. Through the setting of the first chutes 24, the powder distribution mechanism 3 can be moved along the first chutes 24, thereby improving the stability of the powder distribution mechanism 3.

[0042] like Figure 3 and Figure 4 The powder distributing mechanism 3 is shown in Figure 2, and the powder distributing mechanism 3 includes a pair of magnetically coupled rodless cylinders 31 fixedly connected to the upper surface of the fixed platform 21, and a powder distributing platform 32 is arranged between the pair of magnetically coupled rodless cylinders 31, and the output end of the magnetically coupled rodless cylinder 31 is fixedly connected to the powder distributing platform 32, and a plurality of material spreading boxes 33 are fixedly connected to the powder distributing platform 32, and a plurality of first slide rails 35 are fixedly connected to the lower end of the powder distributing platform 32, and the first slide groove 24 and the first slide rail 35 slide with each other. A scraper 36 is fixedly connected in the material spreading box 33, and a plurality of push-piece grooves 34 are provided on the side of the powder distributing platform 32 close to the scraper 36. The magnetically coupled rodless cylinder 31 drives the powder distributing platform 32 to reciprocate once along the first slide groove 24, and the powder falls into the sleeve 71 and is scraped flat by the scraper 36, and the tablets are collected and pushed into the corresponding blanking hole 22 through the push-piece groove 34, so that the tablets are discharged through the corresponding blanking slide 23.

[0043] like Figure 5-Figure 8As shown, a locking mechanism 8 is provided in the base 1, and a load-bearing plate 9 is fixedly connected in the base 1. The locking mechanism 8 includes a pair of first locking plates 81 slidably arranged between the load-bearing plate 9 and the workbench 2, a second locking plate 82 is slidably connected between the pair of first locking plates 81, a plurality of fourth springs 87 are fixedly connected to one end of the pair of first locking plates 81, and a second movable plate 88 is fixedly connected to one end of the plurality of fourth springs 87 away from the first locking plate 81, and a second inclined rod 89 is slidably connected to both ends of the second movable plate 88, and a second vertical rod 810 is fixedly connected to the upper end of the second inclined rod 89, a plurality of third springs 83 are fixedly connected to one end of the second locking plate 82 away from the second movable plate 88, and a first movable plate 84 is fixedly connected to one end of the third spring 83 away from the second locking plate 82, and a first movable plate 84 is slidably connected to both ends of the first movable plate 84 The first oblique rod 85, the upper end of the first oblique rod 85 is fixedly connected with the first vertical rod 86, the upper pressing platform 5 pushes the buffer block 811 to move downward, the buffer block 811 drives the first vertical rod 86 and the second vertical rod 810 to move downward, the first vertical rod 86 drives the first oblique rod 85 to move downward, the first oblique rod 85 drives the first movable plate 84 to move outward, the first movable plate 84 drives the second locking plate 82 to move outward through the third spring 83, the second vertical rod 810 drives the second oblique rod 89 to move downward, the second oblique rod 89 drives the second movable plate 88 to move outward, the second movable plate 88 drives the first locking plate 81 to move outward through the fourth spring 87, and since the first locking plate 81 and the second locking plate 82 move to both sides respectively, the locking hole 813 is staggered, and the locking groove 72 on the sleeve 71 is clamped by the locking hole 813 to fix the sleeve 71.

[0044] The first locking plate 81 and the second locking plate 82 are both provided with a plurality of locking holes 813, and the lower surfaces of the sides of the first locking plate 81 and the second locking plate 82 are rotatably connected with a plurality of rollers 812, and the upper ends of the second vertical rod 810 and the first vertical rod 86 are fixedly connected with a buffer block 811, and the lower surface of the buffer block 811 is fixedly connected with a gas spring 814, and the end of the gas spring 814 away from the buffer block 811 is fixedly connected to the workbench 2, and rises under the push of the gas spring 814, thereby driving the first locking plate 81 and the second locking plate 82 to move inward, realigning the locking holes 813, and releasing the lock on the lower mold 7, and the friction between the first locking plate 81 and the second locking plate 82 can be reduced by setting the roller 812.

[0045] like Figure 9-11As shown, the lower end of the upper hydraulic rod 4 is fixedly connected to the upper pressing platform 5, and the upper pressing platform 5 includes a mounting plate 51 fixedly connected to the upper hydraulic rod 4, the lower end of the mounting plate 51 is fixedly connected to the fixing plate 52, the lower end of the fixing plate 52 is fixedly connected to a plurality of locking blocks 53, the lower end of the fixing plate 52 is fixedly connected to a plurality of sliding rods 56, the sliding rods 56 penetrate through the sliding connection fixing platform 21, a first groove 54 is provided in the locking block 53, and a second groove 55 is provided on the side of the first groove 54, and the upper mold 6 can be fixed by aligning the plug 62 on the upper mold 6 with the first groove 54 on the locking block 53 and inserting it.

[0046] like Figure 11-13 As shown, a plurality of upper molds 6 are fixedly connected to the lower surface of the upper pressing table 5, and the upper mold 6 includes a push plate 61, and a plug 62 is fixedly connected to the upper end of the push plate 61, and steel balls 64 are slidably connected to the four sides of the plug 62, and a first spring 63 is fixedly connected between the steel balls 64 and the plug 62, and a fixed rod 65 is fixedly connected to the lower end of the push plate 61, and a punch 66 is rotatably connected to the end of the fixed rod 65 away from the push plate 61, and a second spring 67 is fixedly connected to the lower end of the push plate 61, and a fixed ring 68 is fixedly connected to the end of the second spring 67 away from the push plate 61, and a positioning sleeve 69 is rotatably connected to the lower end of the fixing ring 68, and a plurality of second slide rails 61 are fixedly connected in the positioning sleeve 69. 0, a plurality of second slide grooves 612 are provided on the punch 66, the second slide rail 610 and the second slide groove 612 slide with each other, a plurality of positioning blocks 611 are fixedly connected to the lower end of the positioning sleeve 69, and the first spring 63 pushes the steel ball 64 into the second groove 55, thereby completing the installation and locking of the upper mold 6. When the upper mold 6 moves downward, the positioning block 611 on the positioning sleeve 69 enters the positioning groove 73, thereby driving the positioning sleeve 69 to rotate and align with the sleeve 71, and the positioning sleeve 69 drives the punch 66 to align with the hole on the sleeve 71 through the second slide rail 610, and then the upper pressing table 5 continues to move downward to compress the second spring 67, so that the punch 66 enters the sleeve 71 to press the powder into tablets.

[0047] like Fig.14 and Fig.15 As shown, the upper surface of the workbench 2 is penetrated by a plurality of lower molds 7 for sliding connection, the lower mold 7 includes a sleeve 71 that penetrates and slides through the fixed platform 21, a plurality of locking grooves 72 are provided on the sleeve 71, a round table 77 is fixedly connected to the lower end of the sleeve 71, the round table 77 penetrates and slides through the load-bearing plate 9, a plurality of positioning grooves 73 are provided on the upper surface of the sleeve 71, a push rod 74 is slidably connected in the sleeve 71, a connecting rod 75 is fixedly connected to the lower end of the push rod 74, a push block 76 is fixedly connected to the lower end of the connecting rod 75, the top plate 14 drives the connecting rod 75 to move upward through the top block 76, and the connecting rod 75 drives the push rod 74 to move upward to eject the tablet.

[0048] The working principle of this embodiment is as follows: put the powder into the material spreading box 33 on the powder spreading mechanism 3, then align the plug 62 on the upper mold 6 with the first groove 54 on the locking block 53 and insert it. At this time, the first spring 63 pushes the steel ball 64 into the second groove 55, thereby completing the installation and locking of the upper mold 6, inserting the lower mold 7 into the locking hole 813, allowing the round table 77 to pass through the bearing plate 9, and the sleeve 71 is placed on the bearing plate 9;

[0049] Then, the magnetically coupled rodless cylinder 31 drives the powder distributing platform 32 to reciprocate once along the first slide groove 24, and the powder falls into the sleeve 71 and is scraped flat by the scraper 36. Then, the upper hydraulic rod 4 drives the upper pressing platform 5 to move downward, and the upper pressing platform 5 drives the upper mold 6 to move downward. At this time, the upper pressing platform 5 pushes the buffer block 811 to move downward, and the buffer block 811 drives the first vertical rod 86 and the second vertical rod 810 to move downward, the first vertical rod 86 drives the first oblique rod 85 to move downward, the first oblique rod 85 drives the first movable plate 84 to move outward, and the first movable plate 84 drives the second locking plate 82 to move outward through the third spring 83, the second vertical rod 810 drives the second oblique rod 89 to move downward, and the second oblique rod 89 drives the second movable plate 88 Move outward, the second moving plate 88 drives the first locking plate 81 to move outward through the fourth spring 87. Since the first locking plate 81 and the second locking plate 82 move to both sides respectively, the locking holes 813 are staggered, and the locking groove 72 on the sleeve 71 is clamped through the locking hole 813 to fix the sleeve 71. When the upper mold 6 moves downward, the positioning block 611 on the positioning sleeve 69 enters the positioning groove 73, thereby driving the positioning sleeve 69 to rotate and align with the sleeve 71, and the positioning sleeve 69 drives the punch 66 to align with the hole on the sleeve 71 through the second slide rail 610. Then, the upper pressing table 5 continues to move downward to compress the second spring 67, so that the punch 66 enters the sleeve 71 to press the powder into tablets;

[0050] After the tableting operation is completed, the upper hydraulic rod 4 drives the upper pressing table 5 to move upward, so that the upper mold 6 is separated from the lower mold 7. At this time, the buffer block 811 lacks extrusion and rises under the push of the gas spring 814, thereby driving the first locking plate 81 and the second locking plate 82 to move inward, so that the locking hole 813 is realigned and the lock on the lower mold 7 is released. After that, the lower hydraulic rod 13 drives the top plate 14 to move upward, and the top plate 14 drives the connecting rod 75 to move upward through the top block 76, and the connecting rod 75 drives the top rod 74 to move upward to push the tablet out. Then, the magnetically coupled rodless cylinder 31 drives the powder distribution table 32 to move, collects the tablets through the tablet pushing groove 34 and pushes them into the corresponding blanking hole 22, so that the tablets are discharged through the corresponding blanking slide 23, and when the powder distribution table 32 returns to its position, the material spreading box 33 completes the next material spreading, thereby facilitating the subsequent tableting operation.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A tablet press for improving mold stability and sealing, comprising a base (1), characterized in that: The lower upper surface of the base (1) is fixedly connected to a workbench (2), the upper lower surface of the base (1) is fixedly connected to an upper hydraulic rod (4), the lower end of the upper hydraulic rod (4) is fixedly connected to an upper pressing platform (5), the lower surface of the upper pressing platform (5) is fixedly connected to a plurality of upper molds (6), a locking mechanism (8) is provided in the base (1), a powder distributing mechanism (3) is provided on the upper surface of the workbench (2), and a plurality of lower molds (7) are slidably connected to the upper surface of the workbench (2); A load-bearing plate (9) is fixedly connected to the base (1), the locking mechanism (8) comprises a pair of first locking plates (81) slidably arranged between the load-bearing plate (9) and the workbench (2), a second locking plate (82) is slidably connected between the pair of first locking plates (81), one end of the pair of first locking plates (81) is fixedly connected to a plurality of fourth springs (87), one end of the plurality of fourth springs (87) away from the first locking plate (81) is fixedly connected to a second movable plate (88), and the second movable plate (88) is fixedly connected to the second movable plate (88). Both ends are slidably connected to a second oblique rod (89), the upper end of the second oblique rod (89) is fixedly connected to a second vertical rod (810), one end of the second locking plate (82) away from the second movable plate (88) is fixedly connected to a plurality of third springs (83), one end of the third spring (83) away from the second locking plate (82) is fixedly connected to the first movable plate (84), both ends of the first movable plate (84) are slidably connected to a first oblique rod (85), and the upper end of the first oblique rod (85) is fixedly connected to a first vertical rod (86); The workbench (2) comprises a fixed platform (21) fixedly connected to the base (1), a plurality of blanking holes (22) are provided at one end of the fixed platform (21), a blanking slideway (23) is fixedly connected to the lower ends of the plurality of blanking holes (22), and a plurality of first slide grooves (24) are provided on the upper surface of the fixed platform (21); The lower mold (7) comprises a sleeve (71) penetrating the slidably connected fixed platform (21), the sleeve (71) is provided with a plurality of locking grooves (72), the lower end of the sleeve (71) is fixedly connected with a round platform (77), the round platform (77) penetrates the slidably connected load-bearing plate (9), the upper surface of the sleeve (71) is provided with a plurality of positioning grooves (73), the sleeve (71) is slidably connected with a push rod (74), the lower end of the push rod (74) is fixedly connected with a connecting rod (75), and the lower end of the connecting rod (75) is fixedly connected with a push block (76); The first locking plate (81) and the second locking plate (82) are both provided with a plurality of locking holes (813); the lower surfaces of the sides of the first locking plate (81) and the second locking plate (82) are both rotatably connected to a plurality of rollers (812); the upper ends of the second vertical rod (810) and the first vertical rod (86) are both fixedly connected to a buffer block (811); the lower surface of the buffer block (811) is fixedly connected to a gas spring (814); and one end of the gas spring (814) away from the buffer block (811) is fixedly connected to the workbench (2); By setting the locking mechanism (8), when the upper pressing table (5) is pressed downward, the buffer block (811) is pushed downward, and the buffer block (811) drives the first oblique rod (85) and the second oblique rod (89) to move respectively through the first vertical rod (86) and the second vertical rod (810), so that the first movable plate (84) and the second movable plate (88) move to both sides, so that the first locking plate (81) and the second locking plate (82) are separated to both sides, so that the locking holes (813) are staggered, and the locking holes (813) are stuck in the locking grooves (72), so that the lower mold (7) is clamped and fixed.

2. A tablet press with improved mold stability and sealing according to claim 1, characterized in that: A control panel (10) is fixedly connected to one side of the base (1), a plurality of buttons (11) are fixedly connected to the control panel (10), a screen (12) is fixedly connected to the side of the base (1) close to the control panel (10), a lower hydraulic rod (13) is fixedly connected inside the base (1), and a top plate (14) is fixedly connected to the upper end of the lower hydraulic rod (13).

3. A tablet press with improved mold stability and sealing according to claim 1, characterized in that: The powder spreading mechanism (3) comprises a pair of magnetically coupled rodless cylinders (31) fixedly connected to the upper surface of a fixed platform (21); a powder spreading platform (32) is arranged between the pair of magnetically coupled rodless cylinders (31); the output end of the magnetically coupled rodless cylinders (31) is fixedly connected to the powder spreading platform (32); a plurality of material spreading boxes (33) are fixedly connected to the powder spreading platform (32); a plurality of first slide rails (35) are fixedly connected to the lower end of the powder spreading platform (32); the first slide groove (24) and the first slide rail (35) are slidably matched with each other; a scraper (36) is fixedly connected inside the material spreading box (33); and a plurality of push-piece grooves (34) are provided on a side of the powder spreading platform (32) close to the scraper (36).

4. A tablet press with improved mold stability and sealing according to claim 1, characterized in that: The upper pressing platform (5) comprises a mounting plate (51) fixedly connected to the upper hydraulic rod (4); the lower end of the mounting plate (51) is fixedly connected to a fixing plate (52); the lower end of the fixing plate (52) is fixedly connected to a plurality of locking blocks (53); the lower end of the fixing plate (52) is fixedly connected to a plurality of sliding rods (56); the sliding rods (56) penetrate the fixing platform (21) for sliding connection; a first groove (54) is provided in the locking block (53); and a second groove (55) is provided on the side of the first groove (54).

5. A tablet press with improved mold stability and sealing according to claim 1, characterized in that: The upper mold (6) comprises a push plate (61), the upper end of the push plate (61) is fixedly connected to a plug (62), the four sides of the plug (62) are slidably connected to steel balls (64), a first spring (63) is fixedly connected between the steel balls (64) and the plug (62), the lower end of the push plate (61) is fixedly connected to a fixing rod (65), the end of the fixing rod (65) away from the push plate (61) is rotatably connected to a punch (66), and the lower end of the push plate (61) is fixedly connected to a second spring (63). A spring (67), one end of the second spring (67) away from the push plate (61) is fixedly connected to a fixing ring (68), the lower end of the fixing ring (68) is rotatably connected to a positioning sleeve (69), a plurality of second slide rails (610) are fixedly connected inside the positioning sleeve (69), a plurality of second slide grooves (612) are provided on the punch (66), the second slide rails (610) and the second slide grooves (612) are slidably matched with each other, and a plurality of positioning blocks (611) are fixedly connected to the lower end of the positioning sleeve (69).

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