Injection molding machine for producing non-toxic degradable plastic toys

Abstract

The utility model relates to the technical field of plastic toy production and injection molding, in particular to an injection molding machine for producing non-toxic degradable plastic toys, which comprises an injection molding body, the injection molding body consists of a lower die holder, a guide die frame and an upper die holder, a fixed surface is arranged below the injection molding body, and a heating dissolving box and an ejection cylinder are arranged on the fixed surface. A liquid pump is arranged on the side wall of the heating and dissolving box, a mounting hole and a heating inner cavity are formed in the heating and dissolving box, a stirring motor is arranged on the heating and dissolving box, a main shaft is arranged on the stirring motor, a stirring blade is arranged on the main shaft, a liquid mixing opening is formed in the stirring blade, a bearing disc is arranged on the reinforcing rib, a disc side scraping pad is arranged on the bearing disc, and a scraping strip is arranged on the stirring blade. And an arc-shaped surface is arranged on the scraping strip. The efficiency of comprehensively heating and dissolving degradable color master batch raw materials into liquid raw material liquid is integrally improved, and the phenomenon that part of degradable color master batch raw materials are attached to the inner wall of the heating and dissolving box and cannot be pumped away in the later period is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding of plastic toys, in particular to an injection molding machine for producing non-toxic and degradable plastic toys. Background Art

[0002] Plastic toys made of non-toxic and biodegradable materials refer to toys made of environmentally friendly materials. These materials are not only harmless to the human body and children, but can also be decomposed by microorganisms in the natural environment and eventually return to nature, reducing pollution to the environment.

[0003] Non-toxic and biodegradable plastic toys are generally made of biodegradable masterbatch as raw material. The liquid biodegradable masterbatch raw material is then input into the cavity of the lower mold base. The guide cylinder is then started to drive the upper mold base and the core downward into the mold cavity. After cooling and forming, the mold is demolded to achieve a one-piece injection-molded non-toxic and biodegradable plastic toy product.

[0004] Before the injection molding operation, the biodegradable masterbatch raw material needs to be heated into a liquid raw material liquid in a heating and dissolving box, and then the injection molding operation can be carried out. However, the existing injection molding device for biodegradable plastic toys has a low efficiency in fully heating and dissolving the biodegradable masterbatch raw material into a liquid raw material liquid.

[0005] In addition, during the heating and dissolving process, some degradable masterbatch raw materials will adhere to the inner wall of the heating and dissolving box. Later, when the liquid is injected through the liquid pump, these degradable masterbatch raw materials remaining on the side wall cannot be pumped away, resulting in waste. Utility Model Content

[0006] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose an injection molding machine for producing non-toxic and degradable plastic toys.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] An injection molding machine for producing non-toxic and biodegradable plastic toys is designed, comprising an injection molding body, the injection molding body consisting of a lower mold base, a guide mold base, and an upper mold base. The lower mold base is provided with a molding cavity, the guide mold base is provided with a guide cylinder, and the upper mold base is provided with a molding core. A fixed surface is provided below the injection molding body, and a heating and dissolving box and an ejection cylinder are provided on the fixed surface. A liquid pump is provided on the side wall of the heating and dissolving box, and a liquid infusion tube is provided on the liquid pump.

[0009] The heating and dissolving box is provided with a mounting hole and a heating inner cavity, the heating and dissolving box is provided with a stirring motor, the stirring motor is provided with a main shaft, the main shaft is provided with a stirring blade, the stirring blade is provided with a liquid mixing port, and the stirring blade is provided with a reinforcement rib;

[0010] A supporting tray is provided on the reinforcing rib, a disk side scraping pad is provided on the supporting tray, a scraping strip is provided on the stirring piece, and an arc surface is provided on the scraping strip.

[0011] Furthermore, the top cross-section of the heating cavity is a circular structure, and the upper end of the heating cavity is open.

[0012] Furthermore, the number of the stirring blades is four and they are arranged in a circle and are provided on the outer wall surface of the main shaft, and the top of the stirring blade is not higher than the heating cavity.

[0013] Furthermore, the liquid mixing ports are symmetrically arranged in two groups, with four ports arranged vertically in each group. The liquid mixing ports are long strip-shaped openings that pass through the stirring blade.

[0014] Furthermore, the support tray is arranged on the outer wall surface of the main shaft, the disk side scraper pad is evenly laid along the outer wall surface of the support tray, and the outer wall surface of the disk side scraper pad is in compression contact with the inner wall surface of the heating cavity.

[0015] Furthermore, the scraping strip is arranged on the outer side surface of the stirring piece, and the arc surface is arranged at one end facing the heating cavity. The scraping strip is in extrusion contact with the inner wall surface of the heating cavity through the arc surface.

[0016] Furthermore, the reinforcing ribs are of a trapezoidal plate-like structure as a whole and are arranged between the supporting tray and the outer wall surface of the main shaft. There are four reinforcing ribs arranged circumferentially.

[0017] The utility model provides an injection molding machine for producing non-toxic and degradable plastic toys, which has the following beneficial effects:

[0018] 1. The utility model provides a stirring structure with stirring blades on the heating and dissolving box, and at the same time provides multiple groups of long strip-shaped liquid mixing port structures on the stirring blades. Before the raw material liquid is pumped into the mold cavity, the degradable masterbatch raw materials in the heating and dissolving box are fully heated, stirred and mixed, thereby improving the overall efficiency of heating and dissolving the degradable masterbatch raw materials into liquid raw material liquid.

[0019] 2. The utility model provides a scraping strip with an arc-shaped surface on the stirring blade, and provides a supporting tray structure with a disk-side scraping pad on the stirring blade. When stirring and mixing, part of the degradable masterbatch raw materials attached to the inner wall of the heating inner cavity of the heating and dissolving box can be scraped off and heated and dissolved into liquid, avoiding the phenomenon that part of the degradable masterbatch raw materials adhere to the inner wall of the heating and dissolving box and cannot be extracted later, thereby effectively avoiding the waste of raw material liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a first-perspective stereoscopic view of the overall structure of the present invention;

[0021] Figure 2 For the utility model Figure 1 A partial enlarged view of the stirring blade with a scraping strip structure at position L in the middle;

[0022] Figure 3 This is a second perspective view of the overall structure of the utility model;

[0023] Figure 4 For the utility model Figure 2 An overall three-dimensional schematic diagram of a stirring plate with a supporting tray structure;

[0024] Figure 5 For the utility model Figure 4 Schematic diagram of the top view of the overall structure.

[0025] In the figure: 1 injection molding body; 11 lower mold base; 12 mold cavity; 2 guide mold frame; 21 guide cylinder; 22 upper mold base; 23 core; 3 fixed surface; 31 ejection cylinder; 4 heating and dissolving box; 41 mounting hole; 42 heating inner cavity; 5 liquid extraction pump; 51 infusion tube; 6 stirring motor; 61 main shaft; 62 support tray; 621 tray side scraper pad; 63 reinforcement rib; 7 stirring blade; 71 liquid mixing port; 8 scraper strip; 81 curved surface. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-5 An injection molding machine for producing non-toxic and biodegradable plastic toys includes an injection molding body 1, which is composed of a lower mold base 11, a guide mold base 2, and an upper mold base 22. The lower mold base 11 is provided with a cavity 12, the guide mold base 2 is provided with a guide cylinder 21, and the upper mold base 22 is provided with a core 23. A fixed surface 3 is provided below the injection molding body 1, and a heating and dissolving box 4 and an ejection cylinder 31 are provided on the fixed surface 3. A liquid pump 5 is provided on the side wall of the heating and dissolving box 4, and a liquid infusion tube 51 is provided on the liquid pump 5;

[0028] The heating and dissolving box 4 is provided with a mounting hole 41 and a heating inner cavity 42. The heating and dissolving box 4 is provided with a stirring motor 6. The stirring motor 6 is provided with a main shaft 61. The main shaft 61 is provided with a stirring blade 7. The stirring blade 7 is provided with a liquid mixing port 71. The stirring blade 7 is provided with a reinforcement rib 63.

[0029] A support tray 62 is provided on the reinforcing rib 63 , a disk-side scraping pad 621 is provided on the support tray 62 , a scraping strip 8 is provided on the stirring blade 7 , and an arc-shaped surface 81 is provided on the scraping strip 8 .

[0030] The top cross-section of the heating cavity 42 is a circular structure, and the upper end of the heating cavity 42 is open. The circular structure realizes the scraping effect with the scraping strip 8 and the disk side scraping pad 621.

[0031] There are four stirring blades 7 arranged in a circle and provided on the outer wall of the main shaft 61 . The top of the stirring blade 7 is not higher than the heating cavity 42 to avoid collision with the box cover preset on the top due to protrusion.

[0032] The mixing ports 71 are symmetrically arranged in two groups, with four ports arranged vertically in each group. The mixing ports 71 are long strip-shaped openings that pass through the stirring blade 7. The degradable masterbatch raw materials and some raw materials that have become liquid will pass through the mixing ports 71 on the stirring blade 7 to form multiple beams of fine mixed solutions, which can improve the dissolution efficiency.

[0033] The supporting tray 62 is arranged on the outer wall surface of the main shaft 61, and the disk side scraper pad 621 is evenly laid along the outer wall surface of the supporting tray 62. The outer wall surface of the disk side scraper pad 621 is in squeeze contact with the inner wall surface of the heating cavity 42, which can effectively scrape off the raw materials attached to the inner wall of the bottom side of the heating cavity 42.

[0034] The scraper bar 8 is arranged on the outer side surface of the stirring blade 7, and the arc surface 81 is arranged at one end facing the heating cavity 42. The scraper bar 8 is squeezed into contact with the inner wall surface of the heating cavity 42 through the arc surface 81, and the attached raw materials can be scraped off in combination with the arc surface 81.

[0035] The scraper strip 8 and the disk side scraper pad 621 are both made of NBR nitrile rubber, which is corrosion-resistant, high-temperature-resistant and durable, and the body has high elasticity.

[0036] The reinforcing ribs 63 are trapezoidal plate-shaped structures as a whole and are arranged between the supporting tray 62 and the outer wall surface of the main shaft 61. There are four reinforcing ribs 63 arranged circumferentially. The reinforcing ribs 63 improve the structural stability between the stirring blade 7, the supporting tray 62 and the main shaft 61.

[0037] Working method: first, a certain amount of biodegradable masterbatch raw materials are put into the heating inner cavity 42, and then the preset box cover is screwed and sealed with the mounting hole 41 through bolts, and then the heating wire embedded in the side wall of the heating and dissolving box 4 is energized to achieve heating and dissolving the biodegradable masterbatch raw materials into a liquid state. This is the existing technology;

[0038] During the heating and dissolving process, the stirring motor 6 can be started to drive the stirring blade 7 to rotate at a high speed through the main shaft 61. At this time, the degradable masterbatch raw material and part of the raw material that has become a liquid state will pass through the mixing port 71 on the stirring blade 7 to form a plurality of small mixed solutions, which not only improves the effective contact and mixing between the degradable masterbatch raw material and the liquid state raw material, thereby improving the dissolution efficiency, but also further improves the effective and comprehensive contact between the degradable masterbatch raw material and the high temperature in the heating inner cavity 42, thereby improving the overall efficiency of heating and dissolving the degradable masterbatch raw material into a liquid raw material liquid;

[0039] After the raw material liquid is completely dissolved into a liquid state, the liquid extraction pump 5 can be started, and the raw material liquid can be input into the mold cavity 12 through the infusion tube 51. Then, the guide cylinder 21 is started to drive the upper mold base 22 and the core 23 to move downward and insert into the mold cavity 12. After cooling and molding, the core 23 can be moved upward and reset, and then the ejection cylinder 31 is started to demold and eject the one-piece molded non-toxic and biodegradable plastic toy product upward, which is the existing technology.

[0040] In addition, when the stirring blade 7 rotates at high speed, the scraper strip 8 and the disk side scraper pad 621 can scrape off the degradable masterbatch raw materials attached to the inner wall of the heating cavity 42 and heat and dissolve them into liquid, avoiding the phenomenon that some degradable masterbatch raw materials adhere to the inner wall of the heating and dissolving box 4 and cannot be extracted later, thereby avoiding the waste of raw material liquid.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection molding machine for producing non-toxic and biodegradable plastic toys, comprising an injection molding body (1), characterized in that: The injection molding body (1) is composed of a lower mold base (11), a guide mold frame (2), and an upper mold base (22); the lower mold base (11) is provided with a mold cavity (12); the guide mold frame (2) is provided with a guide cylinder (21); the upper mold base (22) is provided with a mold core (23); a fixed surface (3) is provided below the injection molding body (1); a heating and dissolving box (4) and an ejection cylinder (31) are provided on the fixed surface (3); a liquid pump (5) is provided on the side wall of the heating and dissolving box (4); and a liquid infusion pipe (51) is provided on the liquid pump (5); The heating and dissolving box (4) is provided with a mounting hole (41) and a heating inner cavity (42), the heating and dissolving box (4) is provided with a stirring motor (6), the stirring motor (6) is provided with a main shaft (61), the main shaft (61) is provided with a stirring blade (7), the stirring blade (7) is provided with a liquid mixing port (71), and the stirring blade (7) is provided with a reinforcing rib (63); A support tray (62) is provided on the reinforcing rib (63), a disk side scraping pad (621) is provided on the support tray (62), a scraping strip (8) is provided on the stirring blade (7), and an arc surface (81) is provided on the scraping strip (8).

2. The injection molding machine for producing non-toxic and biodegradable plastic toys according to claim 1, characterized in that: The top cross-section of the heating inner cavity (42) is a circular structure, and the upper end of the heating inner cavity (42) is open.

3. The injection molding machine for producing non-toxic and biodegradable plastic toys according to claim 1, characterized in that: The stirring blades (7) are four in a circumferential arrangement and are provided on the outer wall surface of the main shaft (61). The top end of the stirring blade (7) is not higher than the heating inner cavity (42).

4. The injection molding machine for producing non-toxic and biodegradable plastic toys according to claim 1, characterized in that: The liquid mixing ports (71) are symmetrically arranged in two groups, with each group comprising four liquid mixing ports arranged vertically. The liquid mixing ports (71) are long strip-shaped openings that pass through the stirring plate (7).

5. The injection molding machine for producing non-toxic and biodegradable plastic toys according to claim 1, characterized in that: The support tray (62) is arranged on the outer wall surface of the main shaft (61), and the disk side scraper pad (621) is evenly laid along the outer wall surface of the support tray (62), and the outer wall surface of the disk side scraper pad (621) is in extrusion contact with the inner wall surface of the heating cavity (42).

6. The injection molding machine for producing non-toxic and biodegradable plastic toys according to claim 1, characterized in that: The scraper strip (8) is arranged on the outer side surface of the stirring piece (7), and the arc surface (81) is arranged at one end facing the heating cavity (42). The scraper strip (8) is in extrusion contact with the inner wall surface of the heating cavity (42) through the arc surface (81).

7. The injection molding machine for producing non-toxic and biodegradable plastic toys according to claim 1, characterized in that: The reinforcing ribs (63) are of a trapezoidal plate-shaped structure as a whole and are arranged between the supporting tray (62) and the outer wall surface of the main shaft (61). There are four reinforcing ribs (63) arranged in a circumference.

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