Mixing device for plastic toy production

By introducing a cleaning component into the mixing device, and utilizing a combination of a servo motor and a pressurized water pump, efficient cleaning of the inner wall of the mixing tank and uniform mixing of materials are achieved, solving the problem of residual materials on the inner wall and improving production efficiency and product quality.

CN224197070UActive Publication Date: 2026-05-05TAICANG DB TOYS MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAICANG DB TOYS MFG CO LTD
Filing Date
2025-04-25
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing mixing devices are difficult to thoroughly clean the residual materials on the inner wall after use, affecting the cleanliness of the mixing tank and the subsequent mixing ratio of materials, resulting in unstable quality of plastic toys.

Method used

A mixing device including a cleaning component was designed. A servo motor controls a screw to move a water spray box and a cleaning brush. Combined with a pressurized water pump spraying water and a drive motor rotating the mixing tank, the inner wall of the mixing tank is thoroughly rinsed and scrubbed. The stirring motor drives the stirring head and scraper to ensure that the material is mixed evenly and completely discharged.

Benefits of technology

It effectively removes residual materials from the inner wall of the mixing tank, keeps the equipment clean, improves the uniformity of material mixing and production efficiency, reduces material waste, and ensures the quality stability of plastic toys.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a material mixing device for plastic toy production, which comprises a cleaning assembly, and the cleaning assembly comprises an operation table, a mounting hole, a limiting cylinder, a material mixing box, a driven gear ring, a support column and a cleaning brush. The servo motor controls the screw rod to enable the connecting arm to drive the strip-shaped water spraying box and the cleaning brush to move downwards, the pressurizing water pump supplies water through an external water pipe and sprays water from the water spraying holes to wash the inner wall of the mixing box, meanwhile, the driving motor drives the mixing box to rotate, and the cleaning brush can comprehensively brush the inner wall, remove attached materials and keep equipment clean. The influence of material residues on subsequent material mixing is reduced; the stirring head is driven by the stirring motor to rotate to stir and mix materials, meanwhile, the scraping plate can scrape the materials at the bottom, accumulation is avoided, the materials are mixed more uniformly, in addition, when the materials are discharged from the discharging opening, the scraping plate continuously rotates during discharging, residual materials on the bottom wall in the mixing box can be scraped into the discharging opening, thorough discharging is ensured, material waste is reduced, and the material mixing efficiency is improved. The production efficiency is improved.
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Description

Technical Field

[0001] This utility model relates to plastic toy production equipment, specifically a mixing device for plastic toy production, belonging to the field of plastic processing technology. Background Technology

[0002] In the production of plastic toys, mixing is a crucial and interconnected step, and its precision directly determines the quality of the finished product. Plastic, as a high-molecular synthetic material, primarily consists of a synthetic resin matrix, with fillers such as calcium carbonate and talc added to enhance hardness and wear resistance, phthalate plasticizers to improve flexibility, hindered phenolic stabilizers to resist oxidative degradation, and lubricants such as stearic acid to reduce processing resistance. Finally, organic or inorganic colorants impart vibrant colors to the toys. These raw materials not only vary significantly in their physicochemical properties but also in particle size distribution and melting temperature. Uneven mixing can easily lead to defects such as surface color differences, insufficient mechanical strength, and poor dimensional stability in toys, and may even cause safety hazards due to uneven additive dispersion. Therefore, a scientifically designed and efficient mixing system plays an irreplaceable role in ensuring the appearance quality, mechanical properties, and safety of plastic toys.

[0003] After the mixing process is completed, residual material often adheres to the inner wall of the mixing tank in existing mixing devices. If this residual material is not cleaned in time, it will not only affect the cleanliness of the mixing tank, but also interfere with subsequent mixing processes, causing deviations in the mixing ratio of different batches of material, and thus affecting the quality stability of plastic toys. Moreover, existing cleaning methods are mostly cumbersome and inefficient, and it is difficult to completely remove the residual material on the inner wall. Therefore, a mixing device for plastic toy production is proposed. Utility Model Content

[0004] In view of this, the present invention provides a mixing device for the production of plastic toys to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative to the mixing device for the production of plastic toys.

[0005] The technical solution of this utility model embodiment is implemented as follows: a mixing device for producing plastic toys, including a cleaning component, the cleaning component including an operating table, a mounting hole, a limiting cylinder, a mixing box, a driven gear ring, a support column, a drive motor, an output shaft, a drive gear, a through groove, a connecting arm, a strip-shaped water spray box, a water spray hole and a cleaning brush;

[0006] A mounting hole is provided at the center of the upper surface of the operating table. A limiting cylinder is fixedly connected to the inner wall of the mounting hole. A mixing box is rotatably connected to the inner wall of the limiting cylinder. A driven gear ring is fixedly connected to the upper part of the outer wall of the mixing box. A support column is fixedly connected to one side of the upper surface of the operating table. A drive motor is fixedly connected to the lower part of the support column near the mixing box. A drive gear is fixedly connected to the output end of the drive motor through an output shaft. The outer wall of the drive gear is meshed with the outer wall of the driven gear ring. A through groove is provided on the upper part of one side of the support column. A connecting arm is slidably connected to the inner wall of the through groove. A strip-shaped water spray box is fixedly connected to the lower surface of the connecting arm near the mixing box. Multiple water spray holes are provided in the middle part of the strip-shaped water spray box near the support column. Cleaning brushes are fixedly connected to the front and rear parts of the strip-shaped water spray box near the support column. The side of the cleaning brush away from the strip-shaped water spray box is attached to the inner wall of the mixing box.

[0007] More preferably, a screw rod is passed through the center of the upper surface of the support column, a screw hole is opened on the upper surface of the connecting arm near the support column, the outer side wall of the screw rod is threaded to the inner side wall of the screw hole, a servo motor is fixedly connected to the outer side of the center of the upper surface of the support column, and the top of the screw rod is fixedly connected to the output end of the servo motor.

[0008] More preferably, a water inlet pipe is connected to the top center of the strip-shaped water spray box, a pressurized water pump is fixedly connected to the upper surface of the connecting arm, the water inlet end of the water inlet pipe is fixedly connected to the water outlet end of the pressurized water pump, and an external water pipe is fixedly connected to the water inlet end of the pressurized water pump.

[0009] More preferably, a stirring motor is fixedly connected to one side of the lower surface of the mixing box, and a driving bevel gear is fixedly connected to the output end of the stirring motor via a connecting shaft. A stirring shaft passes through the center of the lower surface of the mixing box, and a driven bevel gear is fixedly connected to the outer side wall of the stirring shaft near the lower part of the mixing box. The outer side wall of the driving bevel gear is meshed with the outer side wall of the driven bevel gear. A stirring head is fixedly connected to the upper part of the outer side wall of the stirring shaft, and a scraper is fixedly connected to the lower part of the outer side wall of the stirring shaft near the stirring head. The bottom of the scraper is attached to the inner bottom wall of the mixing box.

[0010] More preferably, a discharge port is provided on the other side of the lower surface of the mixing box, and a slot is provided on the lower part of the outer side wall of the mixing box near the discharge port. A sealing plate is slidably connected to the inner side wall of the slot, and a connecting block is welded to the upper surface of the sealing plate away from the mixing box. An electric push rod is fixedly connected to the upper part of the outer side wall of the mixing box near the slot, and the output end of the electric push rod is fixedly connected to the center of the connecting block on the side near the mixing box.

[0011] More preferably, a limiting groove is formed in the middle of the inner front wall and inner rear wall of the through groove, and a limiting block is fixedly connected to the side of the front surface and rear surface of the connecting arm near the support column, and the outer side wall of the limiting block is slidably connected to the inner side wall of the limiting groove.

[0012] More preferably, the inner wall of the limiting cylinder is provided with an annular limiting groove in the middle, and the outer wall of the mixing box is fixedly connected to a limiting ring in the middle, and the outer wall of the limiting ring is rotatably connected to the inner wall of the annular limiting groove.

[0013] More preferably, a U-shaped frame is welded to the outer side of the center of the lower surface of the mixing box, and a limiting hole is opened at the center of the bottom of the U-shaped frame. The bottom of the outer side wall of the stirring shaft is rotatably connected to the inner side wall of the limiting hole.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] I. This utility model uses a servo motor to control a screw, which causes the connecting arm to move the strip spray box and cleaning brush downwards. A pressurized water pump supplies water through an external water pipe, which is sprayed out from the spray hole to rinse the inner wall of the mixing tank. At the same time, the drive motor drives the mixing tank to rotate, and the cleaning brush can thoroughly scrub the inner wall to remove attached materials, keep the equipment clean, and reduce the impact of material residue on subsequent mixing.

[0016] II. This utility model uses a stirring motor to drive the stirring head to rotate, which mixes the materials. At the same time, the scraper can scrape up the materials at the bottom to prevent accumulation and make the materials more evenly mixed. In addition, when the materials are discharged from the discharge port, the scraper continues to rotate during discharge, which can scrape the residual materials on the bottom wall of the mixing box into the discharge port, ensuring thorough discharge, reducing material waste and improving production efficiency.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural view of the present invention from one perspective;

[0020] Figure 2 This is another structural view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 4 This is a structural diagram of the connecting arm and cleaning brush of this utility model;

[0023] Figure 5 This utility model Figure 3 Enlarged view of area A.

[0024] Reference numerals: 1. Cleaning component; 11. Operating table; 12. Mounting hole; 13. Limiting cylinder; 14. Mixing box; 15. Driven gear ring; 16. Support column; 17. Drive motor; 18. Output shaft; 19. Drive gear; 20. Through slot; 21. Connecting arm; 22. Strip spray box; 23. Spray hole; 24. Cleaning brush; 25. Screw; 26. Screw hole; 27. Water inlet pipe; 28. Pressurized water pump; 29. ​​External connection 30. Water pipe; 31. Stirring motor; 32. Connecting shaft; 33. Driving bevel gear; 34. Stirring shaft; 35. Driven bevel gear; 36. Stirring head; 37. Scraper; 38. U-shaped frame; 39. Limiting hole; 40. Discharge port; 41. Slot; 42. Sealing plate; 43. Connecting block; 44. Electric push rod; 45. Limiting groove; 46. Limiting block; 47. Annular limiting groove; 48. Limiting ring; 49. Servo motor. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example

[0028] like Figures 1-5 As shown, this utility model embodiment provides a mixing device for plastic toy production, including a cleaning component 1. The cleaning component 1 includes an operating table 11, a mounting hole 12, a limiting cylinder 13, a mixing box 14, a driven gear ring 15, a support column 16, a drive motor 17, an output shaft 18, a drive gear 19, a through groove 20, a connecting arm 21, a strip-shaped water spray box 22, a water spray hole 23, and a cleaning brush 24.

[0029] A mounting hole 12 is provided at the center of the upper surface of the operating table 11. A limiting cylinder 13 is fixedly connected to the inner wall of the mounting hole 12. A mixing box 14 is rotatably connected to the inner wall of the limiting cylinder 13. A driven gear ring 15 is fixedly connected to the upper part of the outer wall of the mixing box 14. A support column 16 is fixedly connected to one side of the upper surface of the operating table 11. A drive motor 17 is fixedly connected to the lower part of the side of the support column 16 near the mixing box 14. A drive gear 19 is fixedly connected to the output end of the drive motor 17 through an output shaft 18. The outer wall of the drive gear 19 is meshed with the outer wall of the driven gear ring 15. The support column 16... A through groove 20 is provided on the upper part of one side of the 6. A connecting arm 21 is slidably connected to the inner side wall of the through groove 20. A strip-shaped water spray box 22 is fixedly connected to the lower surface of the connecting arm 21 near the side of the mixing box 14. Multiple water spray holes 23 are provided in the middle of the side of the strip-shaped water spray box 22 near the support column 16. Cleaning brushes 24 are fixedly connected to the front and rear of the side of the strip-shaped water spray box 22 near the support column 16. The side of the cleaning brush 24 away from the strip-shaped water spray box 22 is attached to the inner side wall of the mixing box 14. The support column 16 slides inside the through groove 20, thereby increasing the stability of the movement of the support column 16.

[0030] In one embodiment, specifically: a screw 25 passes through the center of the upper surface of the support column 16, a screw hole 26 is opened on the upper surface of the connecting arm 21 near the support column 16, the outer side wall of the screw 25 is threaded to the inner side wall of the screw hole 26, a servo motor 48 is fixedly connected to the outer side of the center of the upper surface of the support column 16, and the top of the screw 25 is fixedly connected to the output end of the servo motor 48. The servo motor 48 drives the screw 25 to rotate, thereby driving the connecting arm 21 to move up and down.

[0031] In one embodiment, specifically: a water inlet pipe 27 is connected to the top center of the strip-shaped water spray box 22, a pressurized water pump 28 is fixedly connected to the upper surface of the connecting arm 21, the water inlet end of the water inlet pipe 27 is fixedly connected to the water outlet end of the pressurized water pump 28, and an external water pipe 29 is fixedly connected to the water inlet end of the pressurized water pump 28, so that it is easy to connect to an external water source through the external water pipe 29.

[0032] In one embodiment, specifically: a stirring motor 30 is fixedly connected to one side of the lower surface of the mixing tank 14; the output end of the stirring motor 30 is fixedly connected to a driving bevel gear 32 via a connecting shaft 31; a stirring shaft 33 passes through the center of the lower surface of the mixing tank 14; a driven bevel gear 34 is fixedly connected to the outer side wall of the stirring shaft 33 near the lower part of the mixing tank 14; the outer side wall of the driving bevel gear 32 is meshed with the outer side wall of the driven bevel gear 34; a stirring head 35 is fixedly connected to the upper part of the outer side wall of the stirring shaft 33; a scraper 36 is fixedly connected to the lower part of the outer side wall of the stirring shaft 33 near the stirring head 35; the bottom of the scraper 36 is attached to the inner bottom wall of the mixing tank 14; the scraper 36 facilitates scraping up the material on the inner bottom wall of the mixing tank 14, making the material more evenly mixed; during discharge, the scraper 36 facilitates scraping the residual material on the inner bottom wall of the mixing tank 14 into the discharge port 39 for discharge.

[0033] In one embodiment, specifically: a discharge port 39 is provided on the other side of the lower surface of the mixing box 14, and a slot 40 is provided on the lower part of the outer side wall of the mixing box 14 near the discharge port 39. A sealing plate 41 is slidably connected to the inner side wall of the slot 40. A connecting block 42 is welded to the upper end of the sealing plate 41 away from the mixing box 14. An electric push rod 43 is fixedly connected to the upper part of the outer side wall of the mixing box 14 near the slot 40. The output end of the electric push rod 43 is fixedly connected to the center of the connecting block 42 near the mixing box 14. The electric push rod 43 pushes the connecting block 42 to move, thereby driving the sealing plate 41 to move, which facilitates opening the discharge port 39 to discharge the material.

[0034] In one embodiment, specifically: a limiting groove 44 is provided in the middle of the inner front wall and inner rear wall of the through groove 20, and a limiting block 45 is fixedly connected to the side of the front surface and rear surface of the connecting arm 21 near the support column 16. The outer side wall of the limiting block 45 is slidably connected to the inner side wall of the limiting groove 44. By sliding the limiting block 45 on the connecting arm 21 inside the limiting groove 44, the limiting block 45 is limited, thereby increasing the stability of the connecting arm 21 moving up and down.

[0035] In one embodiment, specifically: an annular limiting groove 46 is provided in the middle of the inner sidewall of the limiting cylinder 13, and a limiting ring 47 is fixedly connected to the middle of the outer sidewall of the mixing box 14. The outer sidewall of the limiting ring 47 is rotatably connected to the inner sidewall of the annular limiting groove 46. By rotating the limiting ring 47 on the mixing box 14 inside the annular limiting groove 46, the limiting ring 47 is limited, thereby increasing the stability of the rotation of the mixing box 14.

[0036] In one embodiment, specifically: a U-shaped frame 37 is welded to the outer side of the center of the lower surface of the mixing box 14, and a limiting hole 38 is opened at the center of the bottom of the U-shaped frame 37. The bottom of the outer side wall of the stirring shaft 33 is rotatably connected to the inner side wall of the limiting hole 38. By rotating the bottom of the outer side wall of the stirring shaft 33 inside the limiting hole 38, the stirring shaft 33 is limited, thereby increasing the stability of the rotation of the stirring shaft 33.

[0037] In operation, the following steps are taken: Plastic raw materials, fillers, plasticizers, stabilizers, lubricants, colorants, etc., are added to the mixing tank 14 in proportion. At this time, the sealing plate 41 is inserted into the slot 40, sealing the discharge port 39 to prevent material leakage. The stirring motor 30 is started, and its output drives the connecting shaft 31 to rotate, which in turn causes the driving bevel gear 32 to rotate. The driving bevel gear 32 meshes with the driven bevel gear 34, driving the stirring shaft 33 to rotate. The stirring head 35 on the stirring shaft 33 rotates accordingly, thus mixing the materials in the mixing tank 14. During mixing, the scraper 36 at the bottom of the mixing shaft 33 also rotates. The bottom of the scraper 36 is in contact with the bottom wall of the mixing tank 14, which can scrape up the material adhering to the bottom, preventing material accumulation and making the material more evenly mixed. After mixing is completed, the electric push rod 43 is activated. The output end of the electric push rod 43 pushes the connecting block 42, causing the sealing plate 41 to be pulled out of the slot 40. The material in the mixing tank 14 is discharged through the discharge port 39. At the same time, the rotation of the scraper 36 at the bottom of the mixing shaft 33 scrapes the material remaining on the bottom wall of the mixing tank 14 into the discharge port 39 for discharge. Subsequent processing can then proceed. When cleaning the mixing tank 14 is required, the servo motor 48 is started, which drives the screw 25 to rotate. Since the screw 25 is threadedly connected to the screw hole 26 on the connecting arm 21, the connecting arm 21 will slide downward in the through groove 20. The strip-shaped water spray box 22 and the cleaning brush 24 on the lower surface of the connecting arm 21 will move downward accordingly, so that the cleaning brush 24 is in contact with the inner wall of the mixing tank 14. The pressurized water pump 28 is started, and the external water pipe 29 introduces water into the pressurized water pump 28. The pressurized water pump 28 pressurizes the water and sends it into the strip-shaped water spray box 22 through the water inlet pipe 27. The water sprays from the spray holes. 23 sprays out to rinse the inner wall of the mixing tank 14. At the same time, the drive motor 17 is started. The drive motor 17 drives the drive gear 19 to rotate through the output shaft 18. The drive gear 19 meshes with the driven gear ring 15, causing the mixing tank 14 to rotate around the limiting cylinder 13. Under the action of the rotation of the mixing tank 14, the cleaning brush 24 can thoroughly scrub the inner wall of the mixing tank 14 to clean the attached material. After cleaning, the electric push rod 43 is started to pull the sealing plate 41 out of the slot 40. The waste liquid after cleaning in the mixing tank 14 is discharged through the discharge port 39.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mixing device for producing plastic toys, characterized in that: The cleaning component (1) includes an operating table (11), a mounting hole (12), a limiting cylinder (13), a mixing box (14), a driven gear ring (15), a support column (16), a drive motor (17), an output shaft (18), a drive gear (19), a through groove (20), a connecting arm (21), a strip spray box (22), a spray hole (23), and a cleaning brush (24). A mounting hole (12) is provided at the center of the upper surface of the operating table (11). A limiting cylinder (13) is fixedly connected to the inner wall of the mounting hole (12). A mixing box (14) is rotatably connected to the inner wall of the limiting cylinder (13). A driven gear ring (15) is fixedly connected to the upper part of the outer wall of the mixing box (14). A support column (16) is fixedly connected to one side of the upper surface of the operating table (11). A drive motor (17) is fixedly connected to the lower part of the side of the support column (16) near the mixing box (14). A drive gear (19) is fixedly connected to the output end of the drive motor (17) through an output shaft (18). The outer wall of the drive gear (19) meshes with the drive gear. A through groove (20) is provided on the upper part of one side of the support column (16) connected to the outer wall of the driven gear ring (15). A connecting arm (21) is slidably connected to the inner wall of the through groove (20). A strip-shaped water spray box (22) is fixedly connected to the lower surface of the connecting arm (21) near the mixing box (14). A plurality of water spray holes (23) are provided in the middle of the side of the strip-shaped water spray box (22) near the support column (16). A cleaning brush (24) is fixedly connected to the front and rear of the side of the strip-shaped water spray box (22) near the support column (16). The side of the cleaning brush (24) away from the strip-shaped water spray box (22) is attached to the inner wall of the mixing box (14).

2. The mixing device for producing plastic toys according to claim 1, characterized in that: A screw (25) is inserted through the center of the upper surface of the support column (16). A screw hole (26) is opened on the upper surface of the connecting arm (21) near the support column (16). The outer side wall of the screw (25) is threaded to the inner side wall of the screw hole (26). A servo motor (48) is fixedly connected to the outer side of the center of the upper surface of the support column (16). The top of the screw (25) is fixedly connected to the output end of the servo motor (48).

3. The mixing device for producing plastic toys according to claim 1, characterized in that: The top center of the strip-shaped spray box (22) is connected to a water inlet pipe (27), and a pressurized water pump (28) is fixedly connected to the upper surface of the connecting arm (21). The water inlet end of the water inlet pipe (27) is fixedly connected to the water outlet end of the pressurized water pump (28), and the water inlet end of the pressurized water pump (28) is fixedly connected to an external water pipe (29).

4. The mixing device for producing plastic toys according to claim 1, characterized in that: A stirring motor (30) is fixedly connected to one side of the lower surface of the mixing tank (14). The output end of the stirring motor (30) is fixedly connected to a driving bevel gear (32) via a connecting shaft (31). A stirring shaft (33) passes through the center of the lower surface of the mixing tank (14). A driven bevel gear (34) is fixedly connected to the outer side wall of the stirring shaft (33) near the lower part of the mixing tank (14). The outer side wall of the driving bevel gear (32) is meshed with the outer side wall of the driven bevel gear (34). A stirring head (35) is fixedly connected to the upper part of the outer side wall of the stirring shaft (33). A scraper (36) is fixedly connected to the lower part of the outer side wall of the stirring shaft (33) near the stirring head (35). The bottom of the scraper (36) is attached to the inner bottom wall of the mixing tank (14).

5. A mixing device for producing plastic toys according to claim 4, characterized in that: A discharge port (39) is provided on the other side of the lower surface of the mixing box (14). A slot (40) is provided on the lower part of the outer side wall of the mixing box (14) near the discharge port (39). A sealing plate (41) is slidably connected to the inner side wall of the slot (40). A connecting block (42) is welded to the upper end of the sealing plate (41) away from the mixing box (14). An electric push rod (43) is fixedly connected to the upper part of the outer side wall of the mixing box (14) near the slot (40). The output end of the electric push rod (43) is fixedly connected to the center of the connecting block (42) near the mixing box (14).

6. The mixing device for producing plastic toys according to claim 1, characterized in that: Limiting grooves (44) are provided in the middle of the inner front wall and inner rear wall of the through groove (20). Limiting blocks (45) are fixedly connected to the front surface and rear surface of the connecting arm (21) on the side near the support column (16). The outer side wall of the limiting block (45) is slidably connected to the inner side wall of the limiting groove (44).

7. A mixing device for producing plastic toys according to claim 1, characterized in that: The inner sidewall of the limiting cylinder (13) is provided with an annular limiting groove (46), and the outer sidewall of the mixing box (14) is fixedly connected to a limiting ring (47). The outer sidewall of the limiting ring (47) is rotatably connected to the inner sidewall of the annular limiting groove (46).

8. A mixing device for producing plastic toys according to claim 4, characterized in that: A U-shaped frame (37) is welded to the outer side of the center of the lower surface of the mixing box (14). A limiting hole (38) is opened at the center of the bottom of the U-shaped frame (37). The bottom of the outer side wall of the stirring shaft (33) is rotatably connected to the inner side wall of the limiting hole (38).