Manufacturing equipment and processing method of inorganic biodegradable tableware

Abstract

The invention discloses manufacturing equipment and a processing method of inorganic biodegradable tableware, and the method comprises the following steps: S1, mixing raw materials: washing, disinfecting and grinding the raw materials according to a ratio to respectively form fine cellulose particles, and mixing and stirring to form a raw material mixture; s2, extrusion and granulation: continuously mixing the raw material mixture in an extruder, melting the raw material mixture, extruding to form a strip-shaped material, then rapidly cooling, carrying out high-speed granulation to obtain master batches, and then putting the master batches into a dryer for dehydration and drying; s3, injection molding: adding the dried master batch into a stock bin of injection molding equipment, heating to a preset temperature, and filling the master batch into a cavity, the inorganic biodegradable tableware produced by the method has good mechanical strength, heat resistance and water resistance, and the tableware can be naturally degraded after the service life is ended, so that the tableware is environment-friendly. And residues after degradation are usually harmless calcium carbonate powder and the like, and the substances can return to the nature and cannot cause pollution to the environment.

Description

Technical Field

[0001] The invention relates to the technical field of tableware manufacturing, and in particular to a manufacturing device and a processing method for inorganic biodegradable tableware. Background Art

[0002] With the increasing global environmental awareness, traditional disposable plastic tableware has gradually been restricted because of its difficulty in degradation and serious pollution to the environment. In order to solve this problem, biodegradable tableware came into being. Currently, most of the biodegradable tableware on the market is made of bio-based materials such as starch or plant fiber. Although it has a certain degree of biodegradability, it may require the use of chemical reagents for treatment during the manufacturing process, which will produce wastewater and cause secondary pollution to the environment. In addition, this type of material is easy to soften in a humid environment and lacks strength, which limits its scope of application.

[0003] Due to the above-mentioned defects of organic biodegradable tableware, inorganic biodegradable materials are now used to make degradable tableware. However, before the preparation of the tableware, the raw materials are mostly stirred and mixed manually. This method is not only time-consuming and labor-intensive, but also has low efficiency, and the mixing effect of the raw materials is poor, affecting the quality of the subsequent processed tableware.

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a manufacturing equipment and a processing method for inorganic biodegradable tableware. Summary of the invention

[0005] In order to solve the technical problems raised in the above background technology, the present invention provides a manufacturing equipment and a processing method for inorganic biodegradable tableware.

[0006] The present invention is implemented by the following technical solution: a method for processing inorganic biodegradable tableware, comprising the following steps:

[0007] S1, mixing raw materials, washing, disinfecting and grinding the raw materials in proportion to make them into fine cellulose particles respectively, and mixing and stirring to form a raw material mixture;

[0008] S2, extrusion and granulation, the raw material mixture is continuously banburyed in an extruder, the raw material mixture is melted and then extruded to form a strip material, which is then rapidly cooled and high-speed granulated to obtain a masterbatch, which is then placed in a dryer for dehydration and drying;

[0009] S3, injection molding, adding the dried masterbatch into the silo of the injection molding equipment, heating it to a predetermined temperature and filling it into the cavity, and then injection molding and demolding it after cooling to obtain inorganic biodegradable tableware.

[0010] As a further improvement of the above solution, the raw materials include but are not limited to calcium carbonate mineral powder, polypropylene, and additives.

[0011] As a further improvement of the above solution, the auxiliary agent includes but is not limited to a heat stabilizer, a lubricant, and a surface modifier.

[0012] As a further improvement of the above scheme, in step S1, 55-75 parts by mass of calcium carbonate ore powder, 25-45 parts by mass of polypropylene and 3-5 parts by mass of additives are added to a mixer, and mixed at a speed of 120r / min-150r / min for 25min-30min to obtain the raw material mixture.

[0013] As a further improvement of the above scheme, in step S2, the raw material mixture is continuously kneaded in the extruder 2, and the temperature is controlled at 180°C-250°C, so that the raw material mixture is melted and then extruded into strips.

[0014] As a further improvement of the above solution, in step S3, the predetermined temperature is 280°C-320°C.

[0015] The present invention also provides an inorganic biodegradable tableware manufacturing equipment applied to any of the above processing methods, comprising a mixer, an extruder, a dryer, and an injection molding device, wherein the mixer, the extruder, the pelletizer, the dryer, and the injection molding device are sequentially connected according to the manufacturing steps of the inorganic biodegradable tableware;

[0016] The mixer is used to mix and stir the raw materials after washing, disinfection and grinding;

[0017] The extruder is used to melt and extrude the raw material mixture to form a strip material;

[0018] The pelletizer is used to cut the extruded strip material into master batches suitable for subsequent processing;

[0019] The dryer is used to dehydrate and dry the masterbatch;

[0020] The injection molding device is used for heating and melting the dried master batches and injection molding them to obtain inorganic biodegradable tableware.

[0021] As a further improvement of the above solution, the top of the mixer has a feed port for inputting various raw materials, and the bottom has a discharge port connected to the input end of the extruder.

[0022] A rotating shaft is vertically rotatably arranged at the center of the mixer, a paddle disc is coaxially arranged at the bottom of the rotating shaft, and a plurality of first paddle rods are circumferentially arranged on the outer circumference of the paddle disc;

[0023] A second paddle rod located above the first paddle rod is radially fixed on the outer wall of the rotating shaft, a third paddle rod parallel to the rotating shaft is inserted into the second paddle rod, and a plurality of fourth paddle rods are circumferentially arranged around the outer wall of the third paddle rod near the bottom. An action mechanism is arranged in the mixer, and the action mechanism is driven by the rotation of the rotating shaft and can guide the third paddle rod to reciprocate in the axial direction of the second paddle rod.

[0024] As a further improvement of the above scheme, the action mechanism includes a ring body fixed at the top wall of the mixer cavity, the rotating shaft is concentrically inserted in the ring body, and there is a gap between the outer wall of the rotating shaft and the inner wall of the ring body, the ring body includes a first arc segment and a second arc segment, the two ends of the first arc segment are respectively connected to the two ends of the second arc segment and have different curvature radii, the top of the third paddle rod is provided with a roller that rolls and frictionally cooperates with the outer peripheral side of the ring body, the second paddle rod is axially provided with a first limit groove, and a first limit block is elastically provided in the first limit groove, the outer wall of the first limit block is slidably clamped in the first limit groove, and the first limit block is sleeved on the outside of the third paddle rod, and the third paddle rod can rotate relative to the first limit block.

[0025] As a further improvement of the above solution, a spring is arranged between the groove wall of the centrifugal end of the first limiting groove and the corresponding outer wall of the first limiting block, and when the first limiting block moves centrifugally in the first limiting groove, the spring is in a compressed deformation state.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The processing method of the inorganic biodegradable tableware of the present invention produces inorganic biodegradable tableware with good mechanical strength and heat and water resistance, and the tableware can be naturally degraded after the end of its service life. The residue after degradation is usually harmless calcium carbonate powder, etc. These substances can return to nature and will not pollute the environment.

[0028] The inorganic biodegradable tableware manufacturing equipment of the present invention can efficiently and conveniently complete the processing and manufacturing of the inorganic biodegradable tableware by arranging a mixer, an extruder, a dryer, and an injection molding device, thereby reducing production costs and ensuring product quality.

[0029] The inorganic biodegradable tableware manufacturing equipment of the present invention can drive each paddle to rotate and move in different directions based on the unidirectional rotation of the rotating shaft in the mixer, thereby increasing the mixing coverage of the raw materials in the mixer and improving the mixing effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A flowchart of the method provided in Example 1 of the present invention;

[0031] Figure 2Provides a schematic diagram of the overall structure of the device for Embodiment 2 of the present invention;

[0032] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the cross section of the mixer;

[0033] Figure 4 for Figure 3 A schematic diagram of the main cross-sectional structure of the intermediate mixer;

[0034] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the mixer in another state;

[0035] Figure 6 for Figure 5 The enlarged structural diagram at A in the middle;

[0036] Figure 7 for Figure 5 The enlarged structural diagram at B in the middle;

[0037] Figure 8 for Figure 4 Schematic diagram of the three-dimensional structure of the middle ring body and the rotating shaft;

[0038] Fig. 9 for Figure 4 Schematic diagram of the cross-sectional structure of the fourth cylinder in the expanded state.

[0039] Description of main symbols:

[0040] 1. mixer; 2. extruder; 3. dryer; 4. injection molding equipment; 5. feed port; 6. discharge port; 7. rotating shaft; 8. paddle plate; 9. first paddle rod; 10. second paddle rod; 11. third paddle rod; 12. fourth paddle rod; 13. ring body; 131. first arc segment; 132. second arc segment; 14. roller; 15. first limit groove; 16. first limit block; 17. first support arm; 18. first Telescopic rod; 19, first cylinder; 20, second connecting rod; 21, connecting column; 211, connecting cylinder; 22, top rod; 23, third connecting rod; 24, fifth paddle rod; 25, second cylinder; 26, second telescopic rod; 27, second support arm; 28, fourth connecting rod; 29, fifth connecting rod; 30, third cylinder; 31, fourth cylinder; 33, groove; 34, bump; 35, pelletizer; 36, baffle. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0042] Example 1

[0043] Please combine Figure 1 The processing method of inorganic biodegradable tableware comprises the following steps:

[0044] S1, mixing raw materials, washing, disinfecting and grinding the raw materials in proportion to make them into fine cellulose particles respectively, and mixing and stirring to form a raw material mixture;

[0045] S2, extrusion and granulation, the raw material mixture is continuously banburyed in the extruder 2, the raw material mixture is melted and extruded to form a strip material, and then quickly cooled and high-speed pelletized to obtain a masterbatch, which is then placed in a dryer 3 for dehydration and drying;

[0046] S3, injection molding, adding the dried masterbatch into the silo of the injection molding equipment 4, heating it to a predetermined temperature and filling it into the mold cavity, and then injection molding and demolding after cooling to obtain inorganic biodegradable tableware.

[0047] Raw materials include but are not limited to calcium carbonate powder, polypropylene, and additives;

[0048] Additives include but are not limited to heat stabilizers, lubricants, and surface modifiers.

[0049] In step S1, 55-75 parts by mass of calcium carbonate powder, 25-45 parts by mass of polypropylene and 3-5 parts by mass of additives are added into a mixer, and mixed at a speed of 120 r / min-150 r / min for 25 min-30 min to obtain a raw material mixture.

[0050] In step S2, the raw material mixture is continuously kneaded in the extruder 2, and the temperature is controlled at 180°C-250°C, so that the raw material mixture is melted and then extruded into strips.

[0051] In step S3, the predetermined temperature is 280°C-320°C.

[0052] Example 2

[0053] Please combine Figures 2 to 9 This embodiment provides an inorganic biodegradable tableware manufacturing equipment applied to the processing method of the above-mentioned embodiment 1, including a mixer 1, an extruder 2, a dryer 3, and an injection molding device 4. The mixer 1, the extruder 2, the pelletizer 35, the dryer 3, and the injection molding device 4 are connected in sequence according to the manufacturing steps of the inorganic biodegradable tableware;

[0054] The mixer 1 is used to mix and stir the raw materials after washing, disinfection and grinding;

[0055] The extruder 2 is used to melt and extrude the raw material mixture to form a strip material;

[0056] The pelletizer 35 is used to cut the extruded strip material into master batches suitable for subsequent processing;

[0057] The dryer 3 is used to dehydrate and dry the masterbatch.

[0058] The injection molding device 4 is used to heat and melt the dried master batches and injection mold them to obtain inorganic biodegradable tableware.

[0059] The top of the mixer 1 is provided with a feed port 5 for inputting various raw materials, and the bottom is provided with a discharge port 6 connected to the input end of the extruder 2. The discharge port is connected to the input end of the extruder 2 through a corresponding pipeline.

[0060] A rotating shaft 7 is vertically rotatably arranged at the center of the mixer 1, a paddle disc 8 is concentrically arranged at the bottom of the rotating shaft 7, and a plurality of first paddle rods 9 are circumferentially arranged on the outer circumference of the paddle disc 8. A motor is installed on the mixer 1, and the output shaft of the motor is connected to the top of the rotating shaft 7 to drive the rotating shaft 7 to rotate unidirectionally, thereby driving the first paddle rods 9 to fully mix and stir the raw materials in the mixer 1.

[0061] A second paddle rod 10 located above the first paddle rod 9 is radially fixed on the outer wall of the rotating shaft 7, a third paddle rod 11 parallel to the rotating shaft 7 is inserted on the second paddle rod 10, and a plurality of fourth paddle rods 12 are circumferentially arranged around the outer wall of the third paddle rod 11 near the bottom. An action mechanism is arranged in the mixer 1, and the action mechanism is driven by the rotation of the rotating shaft 7 and can guide the third paddle rod 11 to reciprocate in the axial direction of the second paddle rod 10.

[0062] The action mechanism includes a ring body 13 fixed on the top wall of the mixer 1 cavity, the rotating shaft 7 is concentrically inserted in the ring body 13, and there is a gap between the outer wall of the rotating shaft 7 and the inner wall of the ring body 13, the ring body 13 includes a first arc segment 131 and a second arc segment 132, and the two ends of the first arc segment 131 are respectively connected to the two ends of the second arc segment 132 and have different curvature radii.

[0063] In this embodiment, the curvature radius of the first arc segment 131 is smaller than the curvature radius of the second arc segment 132. When the roller 14 rolls from the second arc segment 132 to the first arc segment 131, it drives the third paddle rod 11 to gradually move centrifugally, and the spring is gradually compressed and deformed.

[0064] A roller 14 is provided at the top of the third paddle rod 11, which is in rolling and frictional cooperation with the outer peripheral side of the ring body 13. A first limiting groove 15 is axially opened on the second paddle rod 10, and a first limiting block 16 is elastically provided in the first limiting groove 15. The outer wall of the first limiting block 16 is slidably clamped in the first limiting groove 15, and the first limiting block 16 is sleeved on the outside of the third paddle rod 11, and the third paddle rod 11 can rotate relative to the first limiting block 16.

[0065] A spring is arranged between the groove wall at the centrifugal end of the first limiting groove 15 and the corresponding outer wall of the first limiting block 16. When the first limiting block 16 moves centrifugally in the first limiting groove 15, the spring is in a compressed deformation state.

[0066] Baffles 36 are respectively sleeved and fixed on the outer walls of the first limit block 16 near its top and bottom, and the opposite sides of the two baffles 36 correspond to the top and bottom notches of the first limit groove 15, so that when the first limit block 16 moves in the first limit groove 15, the first limit groove 15 can be closed to prevent particles from entering the first limit groove 15 and interfering with the movement of the first limit block 16 and the expansion and contraction of the spring.

[0067] The working principle of this embodiment:

[0068] When the raw materials need to be mixed, the materials are put into the mixer 1 through the feed port 5, and the motor output shaft drives the rotating shaft 7, the paddle disc 8, the first paddle rod 9, the second paddle rod 10, the third paddle rod 11 and the fourth paddle rod 12 to move circumferentially in the mixer 1 to mix and stir the raw materials.

[0069] At the same time, the roller 14 will roll around the outer peripheral side wall of the ring body 13 with changing curvature, which not only drives the fourth paddle rod 12 to rotate itself, but also forces the third paddle rod 11 (with the assistance of a spring) to reciprocate in the axial direction of the second paddle rod 10, thereby expanding the stirring range of the raw materials and improving the stirring efficiency and effect.

[0070] Furthermore, a first support arm 17 parallel to the second paddle rod 10 is installed on the outer wall of the rotating shaft 7 and above the second paddle rod 10. A first telescopic rod 18 parallel to the rotating shaft 7 is fixed to the bottom of the first support arm 17 near the free end. A first cylinder 19 is rotatably inserted on the first telescopic rod 18.

[0071] A second connecting rod 20 parallel to the second paddle rod 10 is arranged on the outer wall of the centrifugal side of the first limit block 16, one end of the second connecting rod 20 is fixedly connected to a connecting column 21 parallel to the rotating shaft, a connecting cylinder 211 is sleeved on the outer side of the connecting column 21, and the connecting column 21 can move axially relative to the connecting cylinder 211. A push rod 22 is connected to the outer wall of the connecting cylinder 211, one end of the push rod 22 is threadedly inserted into one end of the first cylinder 19, and a third connecting rod 23 is connected to the end of the first cylinder 19 away from the push rod 22, and a fifth paddle rod 24 is circumferentially arranged on the outer wall of the third connecting rod 23.

[0072] When the first limit block 16 moves axially relative to the first limit groove 15, the first cylinder 19 can be forced to rotate due to the mutual threaded action between the top rod 22 and the first cylinder 19. Since the top rod 22 can reciprocate in the axial direction of the second paddle rod 10 following the connecting column 21, the connecting tube 211, the second connecting rod 20, and the first limit block 16, the reciprocating rotation of the third connecting rod 23 and the fifth paddle rod 24 is realized, thereby further improving the stirring efficiency and effect of the raw materials.

[0073] Furthermore, a second cylinder 25 is sleeved outside the third paddle rod 11, and the third paddle rod 11 can rotate relative to the second cylinder 25. A second telescopic rod 26 and a second support arm 27 are respectively fixed on both sides of the outer wall of the second cylinder 25, both of which are parallel to the second paddle rod 10.

[0074] The third cylinder 30 is sleeved and fixed on the outer side of the rotating shaft 7, and the fourth cylinder 31 which can move relatively in the axial direction is sleeved on the outer side of the third cylinder 30, and one end of the second telescopic rod 26 is fixed on the outer wall of the fourth cylinder 31, and a fourth connecting rod 28 parallel to the rotating shaft 7 is arranged on the top wall near one end of the second support arm 27, and the top of the fourth connecting rod 28 is vertically fixedly connected to the outer bottom wall of the third connecting rod 23, and a fifth connecting rod 29 is inserted at one end of the third connecting rod 23 near the first cylinder 19. One end of the fifth connecting rod 29 can move axially relative to the third connecting rod 23, and the other end is concentrically fixed at one end of the first cylinder 19 away from the top rod 22.

[0075] One end of the third connecting rod 23 has a slot with a rectangular cross-section (not shown in the figure), and the end of the fifth connecting rod 29 close to the third connecting rod 23 is provided with an insert block that is adapted to be plugged into the slot, and the slot and the insert block can realize the rotation synchronization between the fifth connecting rod 29 and the third connecting rod 23, and the third connecting rod 23 can perform relative axial movement relative to the fifth connecting rod 29.

[0076] A closed-loop groove 33 in an eight-shaped structure is formed on the inner side of the fourth cylinder 31 along its axial direction, and a protrusion 34 that is slidably engaged with the groove 33 is provided on the outer wall of the third cylinder 30 .

[0077] In this embodiment, the rotation of the rotating shaft 7 not only causes the fifth paddle rod 24 to reciprocate, but also causes the protrusion 34 on the third cylinder 30 to continuously rub and squeeze the groove wall of the axial closed loop and figure-eight structure groove 33, forcing the fourth cylinder 31 to reciprocate up and down in the axial direction of the third cylinder 30 under the limiting action of the second telescopic rod 26 and the second cylinder 25.

[0078] The fourth cylinder 31 can drive the third connecting rod 23 and the fifth paddle rod 24 through the second telescopic rod 26, the second cylinder 25, the second support arm 27, and the fourth connecting rod 28 (and the top rod 22 can be under the vertical limiting action of the connecting cylinder 211 and the connecting column 21) to maintain reciprocating movement in the axial direction of the rotating shaft 7, further expanding the stirring range of the raw materials and improving the stirring efficiency and effect.

[0079] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A method for processing inorganic biodegradable tableware, characterized in that: The steps include: S1, mixing raw materials, washing, disinfecting and grinding the raw materials in proportion to make them into fine cellulose particles respectively, and mixing and stirring to form a raw material mixture; S2, extrusion and granulation, the raw material mixture is continuously banburyed in an extruder, the raw material mixture is melted and then extruded to form a strip material, which is then rapidly cooled and high-speed granulated to obtain a masterbatch, which is then placed in a dryer for dehydration and drying; S3, injection molding, adding the dried masterbatch into the silo of the injection molding equipment, heating it to a predetermined temperature and filling it into the cavity, and then injection molding and demolding it after cooling to obtain inorganic biodegradable tableware.

2. The method for processing inorganic biodegradable tableware according to claim 1, characterized in that: The raw materials include but are not limited to calcium carbonate powder, polypropylene, and additives.

3. The inorganic biodegradable tableware manufacturing equipment according to claim 2, characterized in that: The auxiliary agents include but are not limited to heat stabilizers, lubricants, and surface modifiers.

4. The method for processing inorganic biodegradable tableware according to claim 2, characterized in that: In step S1, 55-75 parts by mass of calcium carbonate powder, 25-45 parts by mass of polypropylene and 3-5 parts by mass of additives are added into a mixer, and mixed at a speed of 120 r / min-150 r / min for 25 min-30 min to obtain the raw material mixture.

5. The method for processing inorganic biodegradable tableware according to claim 1, characterized in that: In step S2, the raw material mixture is continuously kneaded in the extruder 2, and the temperature is controlled at 180°C-250°C, so that the raw material mixture is melted and then extruded into strips.

6. The method for processing inorganic biodegradable tableware according to claim 1, characterized in that: In step S3, the predetermined temperature is 280°C-320°C.

7. An inorganic biodegradable tableware manufacturing equipment applied to the processing method according to any one of claims 1 to 6, characterized in that: It includes a mixer, an extruder, a dryer, and an injection molding device, wherein the mixer, the extruder, the pelletizer, the dryer, and the injection molding device are connected in sequence according to the production steps of the inorganic biodegradable tableware; The mixer is used to mix and stir the raw materials after washing, disinfection and grinding; The extruder is used to melt and extrude the raw material mixture to form a strip material; The pelletizer is used to cut the extruded strip material into master batches suitable for subsequent processing; The dryer is used to dehydrate and dry the masterbatch; The injection molding device is used for heating and melting the dried master batches and injection molding them to obtain inorganic biodegradable tableware.

8. The inorganic biodegradable tableware manufacturing equipment according to claim 7, characterized in that: The top of the mixer has a feed port for inputting various raw materials, and the bottom has a discharge port connected to the input end of the extruder. A rotating shaft is vertically rotatably arranged at the center of the mixer, a paddle disc is coaxially arranged at the bottom of the rotating shaft, and a plurality of first paddle rods are circumferentially arranged on the outer circumference of the paddle disc; A second paddle rod located above the first paddle rod is radially fixed on the outer wall of the rotating shaft, a third paddle rod parallel to the rotating shaft is inserted into the second paddle rod, and a plurality of fourth paddle rods are circumferentially arranged around the outer wall of the third paddle rod near the bottom. An action mechanism is arranged in the mixer, and the action mechanism is driven by the rotation of the rotating shaft and can guide the third paddle rod to reciprocate in the axial direction of the second paddle rod.

9. The inorganic biodegradable tableware manufacturing equipment according to claim 8, characterized in that: The action mechanism includes a ring body fixed at the top wall of the mixer cavity, the rotating shaft is coaxially inserted in the ring body, and there is a gap between the outer wall of the rotating shaft and the inner wall of the ring body, the ring body includes a first arc segment and a second arc segment, the two ends of the first arc segment are respectively connected to the two ends of the second arc segment and have different curvature radii, the top of the third paddle rod is provided with a roller that rolls and frictionally cooperates with the outer peripheral side of the ring body, the second paddle rod is axially provided with a first limit groove, the first limit block is elastically provided in the first limit groove, the outer wall of the first limit block is slidably clamped in the first limit groove, and the first limit block is sleeved on the outside of the third paddle rod, and the third paddle rod can rotate relative to the first limit block.

10. The inorganic biodegradable tableware manufacturing equipment according to claim 9, characterized in that: A spring is arranged between the groove wall at the centrifugal end of the first limiting groove and the corresponding outer wall of the first limiting block. When the first limiting block moves centrifugally in the first limiting groove, the spring is in a compressed deformation state.

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