Nano-calcium granulating and forming process

Abstract

The invention discloses a nano-calcium granulation forming process which comprises the following steps: a, dissolving polyethylene glycol with the molecular weight of more than 1000 in water to form a lubricating liquid, b, atomizing the lubricating liquid to the wall of an inner cavity of a mold for nano-calcium granulation, and c, adding nano-calcium into the inner cavity of the mold, and pressing into calcium tablet particles. In the step a, the lubricating liquid is a saturated solution of polyethylene glycol. The method has the advantages of ensuring smooth demolding of the calcium tablet and reducing the content of the lubricant in the calcium tablet.

Description

Technical Field

[0001] The invention belongs to the field of nano calcium, and in particular relates to a nano calcium granulation molding process. Background Art

[0002] Nano calcium is more easily absorbed by the human body than ordinary calcium carbonate powder, and is a good raw material for preparing calcium tablets. The conventional form of nano calcium is powder, and other powdered auxiliary materials such as vitamins, sweeteners, pigments, gelatin, etc. can be added as needed, and pressed into shape in a mold to obtain calcium tablets.

[0003] Although nano calcium can be formed into calcium sheets after being pressed, it is easy to adhere to the inner wall of the mold during the pressing process. After being removed from the mold, the shape is easily damaged, and the yield rate is relatively low. To overcome the above defects, auxiliary materials added to nano calcium generally include lubricants (such as talcum powder and polyethylene glycol powder) to ensure that the calcium sheets removed from the mold have a regular shape and a good yield rate.

[0004] However, the addition of lubricants will also bring some problems. Since the lubricant is evenly distributed in nano-calcium, the amount of lubricant is difficult to reduce to a very low level. Lubricants do not have a good effect on the human body. If consumed in large quantities, it will also bring some side effects and will reduce the taste of the calcium tablets to a certain extent. Summary of the invention

[0005] The purpose of the present invention is to provide a nano calcium granulation molding process. The present invention has the advantages of ensuring smooth demoulding of calcium tablets and reducing the lubricant content of calcium tablets.

[0006] The technical solution of the present invention is a nano calcium granulation molding process, comprising the following steps:

[0007] a. Dissolve polyethylene glycol with a molecular weight of more than 1000 in water to form a lubricating liquid.

[0008] b. Atomize the lubricating liquid onto the inner wall of the mold for nano calcium granulation.

[0009] c. Add nano calcium into the inner cavity of the mold and press it into calcium flake particles.

[0010] In the aforementioned nano-calcium granulation and molding process, in the step a, the lubricating liquid is a saturated solution of polyethylene glycol.

[0011] In the aforementioned nano-calcium granulation molding process, the device used in the molding process includes a mold, a frame driving the mold to open and close, a feeder for replenishing nano-calcium into the mold, and an ultrasonic atomizer for spraying lubricating liquid into the inner cavity of the mold;

[0012] The mold includes a middle mold, a lower mold and an upper mold. The middle mold is tubular. The upper end of the lower mold matches with the inner hole of the middle mold. The upper end of the lower mold is inserted into the middle mold. The lower end of the upper mold matches with the inner hole of the middle mold. The upper mold is located above the middle mold. The inner circumference of the middle mold, the top surface of the lower mold and the bottom surface of the upper mold form the inner cavity wall of the mold.

[0013] The frame includes a horizontally arranged table, the middle mold is tightly embedded in the table, the top surface of the middle mold is kept flush with the top surface of the table, a first cylinder connected to the upper mold is arranged above the table, the upper mold is lifted and lowered by the first cylinder, and a second cylinder connected to the lower mold is arranged below the table, the lower mold is lifted and lowered by the second cylinder;

[0014] The feeder includes a silo located above the table and a feed box located on the top surface of the table. A discharge hole is arranged on the bottom surface of the feed box. A feed hose connected to the bottom of the silo is arranged on one side of the feed box. A third cylinder is arranged on the other side of the feed box. The feed box is moved along the table by the third cylinder. The middle mold is located on the moving route of the feed box.

[0015] In the aforementioned nano-calcium granulation molding process, a cavity connected to the atomizer outlet is provided in the upper mold, a blind hole is provided on the bottom surface of the lower mold, the blind hole is connected to the cavity, a nozzle is provided in the blind hole, an air path is provided in the nozzle, the air inlet end of the air path is located on the top surface of the nozzle, the air outlet end of the air path is located on the side wall of the nozzle, the lower end of the nozzle extends out of the blind hole, the upper end of the nozzle extends into the cavity and extends radially outward to form a limit block, and the distance between the lower end surface of the nozzle and the lower end surface of the lower mold is equal to the distance between the upper end surface of the nozzle and the bottom surface of the blind hole.

[0016] In the aforementioned nano-calcium granulation molding process, a spring hole is provided on the top surface of the cavity, a first compression spring is provided in the spring hole, and the lower end of the first compression spring is connected to a limit block.

[0017] In the aforementioned nano-calcium granulation molding process, a first mounting plate is provided above the table plate, the first mounting plate is fixed to the table plate, the first cylinder is fixed on the first mounting plate, a guide plate is provided on the lower side of the first mounting plate, a guide column passing through the guide plate is provided on the first mounting plate, and the upper mold is fixed at the bottom of the guide plate.

[0018] In the aforementioned nano-calcium granulation molding process, a second mounting plate and a base plate are sequentially arranged below the table plate, the second mounting plate and the base plate are both fixed to the table plate, the lower end of the lower mold passes through the second mounting plate, the lower end of the lower mold radially extends outward to form a step block, a second compression spring is arranged between the step hole and the second mounting plate, a ball cavity is arranged at the bottom of the step block, and a ball is arranged in the ball cavity;

[0019] The second cylinder is horizontally arranged on the base plate, and the output end of the second cylinder is connected to a push plate. The ball is located on the top surface of the push plate. The top surface of the push plate includes two high and low horizontal supporting surfaces. The two horizontal supporting surfaces are connected by an inclined surface. The height difference between the two horizontal supporting surfaces is equal to the distance between the upper end surface of the lower mold and the top surface of the table plate.

[0020] In the aforementioned nano-calcium granulation molding process, the table is provided with a discharge hole located on one side of the middle mold, and an inclined discharge plate is provided below the discharge hole.

[0021] In the aforementioned nano-calcium granulation and molding process, the first cylinder, the second cylinder and the third cylinder are all double-stroke cylinders.

[0022] In the aforementioned nano-calcium granulation molding process, there are multiple molds, and the multiple molds are arranged in a straight line.

[0023] Compared with the prior art, the present invention uses polyethylene glycol with a molecular weight of more than 1000 as a lubricant, and makes polyethylene glycol into a saturated solution as a lubricating liquid. The lubricating liquid can be atomized onto the inner cavity wall of the mold, and the high water absorption of nano calcium is utilized to absorb the water in the lubricating liquid, so that the polyethylene glycol can be recrystallized to a solid state, and then turned back into a lubricant with good lubricity, and the outer surface of the calcium sheet is fully wrapped to ensure that the demoulding of the calcium sheet is smooth and will not be damaged, thereby ensuring a high yield. Since the lubricant is only distributed on the outer surface of the calcium sheet, there is no lubricant inside the calcium sheet, and the lubricant content of the calcium sheet is significantly reduced, which avoids side effects on the human body, and also ensures the taste of the calcium sheet. Therefore, the present invention has the advantages of ensuring that the calcium sheet is demoulded smoothly and reducing the lubricant content of the calcium sheet.

[0024] In addition, the present invention designs a matching device according to the process, and the device has the advantages of simple structure, low cost, and relatively high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view schematic diagram of the device of Example 1 in the initial state.

[0026] Figure 2 It is a structural diagram of the upper mold.

[0027] The marks in the accompanying drawings are: 1-middle mold, 2-lower mold, 3-upper mold, 4-platen, 5-first cylinder, 6-second cylinder, 7-feeding box, 8-discharge hole, 9-silo, 10-feeding hose, 11-third cylinder, 12-cavity, 13-blind hole, 14-nozzle, 15-air path, 16-limiting block, 17-spring hole, 18-first compression spring, 19-first mounting plate, 20-guide plate, 21-guide column, 22-second mounting plate, 23-base plate, 25-step block, 26-second compression spring, 27-ball, 28-push plate, 29-discharge hole, 30-discharge plate. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0029] Example 1. The device used in the nano calcium granulation molding process, such as Figure 1 As shown, the device used in the molding process includes a mold, a frame for driving the mold to open and close, a feeder for replenishing nano-calcium into the mold, and an ultrasonic atomizer for spraying lubricating liquid into the inner cavity of the mold (a typical application of an ultrasonic atomizer is an air humidifier).

[0030] The mold includes a middle mold 1, a lower mold 2 and an upper mold 3. The middle mold 1 is tubular, and a chamfer of 0.3mmx45° is set on the top of the middle mold 1 for centering. The upper end of the lower mold 2 cooperates with the inner hole of the middle mold 1, and the upper end of the lower mold 2 is inserted into the middle mold 1. The lower end of the upper mold 3 cooperates with the inner hole of the middle mold 1. The upper mold 3 is located above the middle mold 1. The inner circumferential surface of the middle mold 1, the top surface of the lower mold 2 and the bottom surface of the upper mold 3 form the inner cavity wall of the mold.

[0031] The frame includes a horizontally arranged table plate 4, in which the middle mold 1 is tightly embedded. The top surface of the middle mold 1 is kept flush with the top surface of the table surface. A first cylinder 5 connected to the upper mold 3 is provided above the table plate 4, and the upper mold 3 is raised and lowered by the first cylinder 5. A second cylinder 6 connected to the lower mold 2 is provided below the table plate 4, and the lower mold 2 is raised and lowered by the second cylinder 6.

[0032] The feeder includes a silo 9 located above the table 4 and a feed box 7 located on the top surface of the table 4, a discharge hole 8 is provided on the bottom surface of the feed box 7, a feed hose 10 connected to the bottom of the silo 9 is provided on one side of the feed box 7, and a third cylinder 11 fixed to the table 4 is provided on the other side of the feed box 7, the output end of the third cylinder 11 is hinged to the feed box 7, and the feed box 7 is moved along the table 4 by the third cylinder 11, and the middle mold 1 is located on the moving route of the feed box 7.

[0033] A cavity 12 connected to the outlet of the atomizer is provided in the upper mold 3, the connection between the cavity 12 and the atomizer is on the side wall of the upper mold 3, the cavity 12 is cylindrical, a cylindrical blind hole 13 is provided on the bottom surface of the lower mold 2, the blind hole 13 is connected to the cavity 12, a nozzle 14 is provided in the blind hole 13, an air path 15 is provided in the nozzle 14, an air inlet end of the air path 15 is located on the top surface of the nozzle 14, an air outlet end of the air path 15 is located on the side wall of the nozzle 14, the air path 15 has a plurality of circumferentially uniformly distributed air outlet ends, the lower end of the nozzle 14 extends out of the blind hole 13, the upper end of the nozzle 14 extends into the cavity 12 and extends radially outward to form a limit block 16, and the distance between the lower end surface of the nozzle 14 and the lower end surface of the lower mold 2 is equal to the distance between the upper end surface of the nozzle 14 and the bottom surface of the blind hole 13.

[0034] A spring hole 17 is provided on the top surface of the cavity 12, and a first compression spring 18 is provided in the spring hole 17. The lower end of the first compression spring 18 is connected to the limit block 16. The pre-tightening pressure of the first compression spring 18 is 5-8N.

[0035] A first mounting plate 19 is provided above the table 4, the first mounting plate 19 is fixed to the table 4, the first cylinder 5 is fixed on the first mounting plate 19, a guide plate 20 is provided on the lower side of the first mounting plate 19, the output end of the first cylinder 5 is connected to the guide plate 20, a guide column 21 passing through the guide plate 20 is provided on the first mounting plate 19, and the upper mold 3 is fixed at the bottom of the guide plate 20.

[0036] A second mounting plate 22 and a base plate 23 are sequentially provided below the table plate 4, and the second mounting plate 22 and the base plate 23 are both fixed to the table plate 4. The lower end of the lower mold 2 passes through the second mounting plate 22, and the lower end of the lower mold 2 radially extends outward to form a step block 25. A second compression spring 26 is provided between the step hole and the second mounting plate 22. A ball cavity is provided at the bottom of the step block 25, and a ball 27 is provided in the ball cavity.

[0037] The second cylinder 6 is horizontally arranged on the base plate 23, and the output end of the second cylinder 6 is connected to a push plate 28. The ball 27 is located on the top surface of the push plate 28. The top surface of the push plate 28 includes two high and low horizontal support surfaces, and the two horizontal support surfaces are connected with an inclined surface.

[0038] The platen 4 is provided with a discharge hole 29 located at one side of the middle mold 1 , and an inclined discharge plate 30 is provided below the discharge hole 29 .

[0039] The first cylinder 5 and the third cylinder 11 are both double-stroke cylinders. A double-stroke cylinder refers to a cylinder with two strokes, for example, the first stroke is 1 cm and the second stroke is 2 cm, and the extended end of the cylinder has three stop positions, namely, the position at 0 cm, the position at 1 cm and the position at 2 cm.

[0040] Embodiment 2. A nano calcium granulation molding process, using the device of embodiment 1. In the initial state, the nano calcium (including auxiliary materials) is stored in the silo 9, and under the action of gravity, enters the feeding box 7 through the feeding hose 10. The first cylinder 5 is in a retracted state. The second cylinder 6 is in a retracted state. The third cylinder 11 is in a second stroke state. The ball 27 is on the lower horizontal support surface of the push plate. The following steps are included:

[0041] a. Dissolve polyethylene glycol with a molecular weight of more than 1000 in water to form a lubricant, which is a saturated solution of polyethylene glycol. The lubricant is stored in an atomizer. When the molecular weight of polyethylene glycol is below 600, it is liquid, and when the molecular weight is above 1000, it is solid. After losing water, it will recrystallize into a solid state.

[0042] b. The first cylinder 5 extends to the first stroke, so that the lower end of the upper mold 2 just enters the inner hole of the middle mold 1, and the atomizer is started for a period of time. After the atomizer atomizes the lubricating liquid, it enters the mold cavity through the cavity 12 and the air path 15 in sequence, and the lubricating liquid diffuses and adheres to the mold cavity wall more evenly. The first cylinder 5 contracts, so that the upper mold 2 rises to the original height.

[0043] c. The third cylinder 11 contracts to the zero stroke state, the discharge hole 8 is aligned with the middle mold 1, and under the action of gravity, the nano calcium in the feeding box 7 fills the inner hole of the middle mold 1, and the third cylinder 11 extends to the second stroke state, so that the feeding box 7 returns to its original position.

[0044] The first cylinder 5 extends to the second stroke, so that the lower end of the upper mold 3 enters deeper into the middle mold 1, squeezing the nano calcium into flaky particles. Since the nano calcium has excellent water absorption, it absorbs the water in the lubricating fluid, and the polyethylene glycol in the lubricating fluid becomes solid and adheres to the outer peripheral surface of the flaky particles, effectively avoiding adhesion between the flaky particles and the inner wall of the mold. The first cylinder 5 contracts, raising the upper mold 2 to its original height.

[0045] The second cylinder 6 extends and the push plate 28 moves, so that the higher horizontal support surface is located at the bottom of the ball 27, and the lower mold 2 rises until the upper end surface is flush with the top surface of the table 4, and the flaky particles are pushed out of the table 4.

[0046] The third cylinder 11 extends to the first stroke state. The feed box 7 moves, pushes the flake particles to the discharge hole 29, and is discharged through the discharge plate 30. The third cylinder 11 extends to the second stroke state, so that the feed box 7 returns to its original position.

[0047] The step C is continuously cycled to continuously produce calcium tablets.

[0048] The motion control of the above three cylinders can be manually operated by manual valves, that is, the cylinders are connected to the compressed air source through the corresponding manual valves, and the state of the cylinders is controlled by the manual valves. The most ideal situation is that the three cylinders are connected to the air source through three solenoid valves respectively, and the three solenoid valves are connected to the same controller. The automatic motion of the cylinders is realized through the built-in program of the controller. The selection and connection of the solenoid valves and controllers belong to conventional technical means in this field.

[0049] Embodiment 3. Based on Embodiment 1, there are multiple molds, and the multiple molds are arranged in a straight line, wherein the middle molds 1 are arranged in a straight line on the same platen 4, the upper molds 3 are arranged in a straight line on the same guide plate 20, and the balls 27 at the lower ends of all the lower molds 3 abut against the same push plate 28. Accordingly, a plurality of discharge holes 8 are provided at the bottom of the feed box 7, and the plurality of discharge holes 8 correspond to the plurality of middle molds 1 respectively.

[0050] When used in Example 2, one step C can produce multiple calcium tablets, doubling the efficiency.

Claims

1. A nano calcium granulation molding process, characterized in that: The following steps are included: a. Dissolve polyethylene glycol with a molecular weight of more than 1000 in water to form a lubricating liquid. b. Atomize the lubricating liquid onto the inner wall of the mold for nano calcium granulation. c. Add nano calcium into the inner cavity of the mold and press it into calcium flake particles.

2. The nano calcium granulation molding process according to claim 1, characterized in that: In the step a, the lubricating liquid is a saturated solution of polyethylene glycol.

3. The nano calcium granulation molding process according to claim 1, characterized in that: The device used in the molding process includes a mold, a frame for driving the mold to open and close, a feeder for replenishing nano calcium into the mold, and an ultrasonic atomizer for spraying lubricating liquid into the inner cavity of the mold; The mold comprises a middle mold (1), a lower mold (2) and an upper mold (3), the middle mold (1) is tubular, the upper end of the lower mold (2) is matched with the inner hole of the middle mold (1), the upper end of the lower mold (2) is inserted into the middle mold (1), the lower end of the upper mold (3) is matched with the inner hole of the middle mold (1), the upper mold (3) is located above the middle mold (1), and the inner peripheral surface of the middle mold (1), the top surface of the lower mold (2) and the bottom surface of the upper mold (3) form the inner cavity wall of the mold; The frame comprises a horizontally arranged table plate (4), a middle mold (1) is tightly embedded in the table plate (4), the top surface of the middle mold (1) is kept flush with the top surface of the table surface, a first cylinder (5) connected to the upper mold (3) is arranged above the table plate (4), and the upper mold (3) is lifted and lowered by the first cylinder (5), and a second cylinder (6) connected to the lower mold (2) is arranged below the table plate (4), and the lower mold (2) is lifted and lowered by the second cylinder (6); The feeder comprises a material bin (9) located above a table (4) and a feed box (7) located on the top surface of the table (4); a discharge hole (8) is provided on the bottom surface of the feed box (7); a feed hose (10) connected to the bottom of the material bin (9) is provided on one side of the feed box (7); a third cylinder (11) is provided on the other side of the feed box (7); the feed box (7) is moved along the table (4) by the third cylinder (11); and the middle mold (1) is located on the moving route of the feed box (7).

4. The nano calcium granulation molding process according to claim 3 is characterized in that: The upper mold (3) is provided with a cavity (12) connected to the atomizer outlet, the bottom surface of the lower mold (2) is provided with a blind hole (13), the blind hole (13) is connected to the cavity (12), a nozzle (14) is provided in the blind hole (13), a gas path (15) is provided in the nozzle (14), the gas inlet end of the gas path (15) is located on the top surface of the nozzle (14), the gas outlet end of the gas path (15) is located on the side wall of the nozzle (14), the lower end of the nozzle (14) extends out of the blind hole (13), the upper end of the nozzle (14) extends into the cavity (12) and extends radially outward to form a stopper (16), and the distance between the lower end surface of the nozzle (14) and the lower end surface of the lower mold (2) is equal to the distance between the upper end surface of the nozzle (14) and the bottom surface of the blind hole (13).

5. The nano calcium granulation molding process according to claim 4, characterized in that: A spring hole (17) is provided on the top surface of the cavity (12), a first compression spring (18) is provided in the spring hole (17), and the lower end of the first compression spring (18) is connected to the limit block (16).

6. The nano calcium granulation molding process according to claim 3, characterized in that: A first mounting plate (19) is provided above the table (4), the first mounting plate (19) is fixed to the table (4), the first cylinder (5) is fixed on the first mounting plate (19), a guide plate (20) is provided on the lower side of the first mounting plate (19), a guide column (21) passing through the guide plate (20) is provided on the first mounting plate (19), and the upper mold (3) is fixed at the bottom of the guide plate (20).

7. The nano calcium granulation molding process according to claim 3, characterized in that: A second mounting plate (22) and a base plate (23) are sequentially arranged below the table plate (4); the second mounting plate (22) and the base plate (23) are both fixed to the table plate (4); the lower end of the lower mold (2) passes through the second mounting plate (22); the lower end of the lower mold (2) extends radially outward to form a step block (25); a second compression spring (26) is arranged between the step hole and the second mounting plate (22); a ball cavity is arranged at the bottom of the step block (25); a ball (27) is arranged in the ball cavity; The second cylinder (6) is horizontally arranged on the base plate (23), the output end of the second cylinder (6) is connected to a push plate (28), the ball (27) is located on the top surface of the push plate (28), the top surface of the push plate (28) includes two horizontal support surfaces, one high and one low, the two horizontal support surfaces are connected by an inclined surface, and the height difference between the two horizontal support surfaces is equal to the distance between the upper end surface of the lower mold (2) and the top surface of the table plate (4).

8. The nano calcium granulation molding process according to claim 3, characterized in that: The platform (4) is provided with a discharge hole (29) located on one side of the middle mold (1), and an inclined discharge plate (30) is provided below the discharge hole (29).

9. The nano calcium granulation molding process according to claim 3, characterized in that: The first cylinder (5) and the third cylinder (11) are both double-stroke cylinders.

10. The nano calcium granulation molding process according to claim 3, characterized in that: There are multiple molds, and the multiple molds are arranged in a straight line.

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