Plastic toy injection mold with rapid cooling structure

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold with a quick cooling structure for plastic toys, which comprises an injection molding double-plate support, L-shaped support plates symmetrically and fixedly mounted at the lower end of the injection molding double-plate support, a lower mold fixedly mounted at the upper ends of the L-shaped support plates, and a telescopic cylinder fixedly mounted at the upper end of the injection molding double-plate support. An upper mold is fixedly installed at the lower end of the telescopic air cylinder, a cooling cavity is formed in the lower mold, a cold injection box is arranged in the cooling cavity, a lifting assembly used for lifting the cold injection box is fixedly installed on the inner bottom wall of the cooling cavity, an air cooler and an air heater are arranged on the outer walls of the two ends of the lower mold correspondingly, and heat exchange holes are symmetrically and evenly formed in the two ends of the lower mold; according to the scheme, after a previous injection molding toy is cooled and demolded, the temperature environment in the cooling cavity of the lower mold can be rapidly changed, and the risk that after materials are injected into the lower mold, due to the influence of the previous cooling temperature on the materials, the stamped and formed toy is cooled too early is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for plastic toys with a rapid cooling structure. Background Art

[0002] Plastic mold is a common manufacturing tool, mainly used to manufacture plastic injection molding products. It consists of high-precision molds and mold holders, and can produce plastic products of various shapes and sizes, such as plastic cups, plastic plates, plastic toys, auto parts, etc.

[0003] There is an injection mold structure suitable for small precision plastic toys (Announcement No.: CN213733209U), which relates to the field of toy processing technology, specifically an injection mold structure suitable for small precision plastic toys, including a bottom plate, the top of the bottom plate is fixedly connected to a support block, the top of the support block is fixedly connected to a lower mold, a stripper plate is arranged inside the lower mold, the bottom of the stripper plate is fixedly connected to a hydraulic push rod, the left side of the lower mold is fixedly connected to a bottom water inlet pipe, and the bottom of the bottom water inlet pipe is fixedly connected to a water pump. By arranging the stripper plate inside the lower mold, after the plastic toy is injection molded, the hydraulic push rod is used to push the stripper plate upward to push out the plastic toy inside the lower mold, which is convenient for demoulding the toy and improves the production efficiency of the toy. By arranging a water cavity inside the lower mold, a water pump is used to transport clean water to the inside of the water cavity, which is convenient for rapid cooling of the injection molded toy.

[0004] The above existing devices can facilitate rapid cooling of injection molded toys. However, when cooling plastic toys, the above existing devices need to inject water into the mold. After the previous plastic toy is cooled and demolded, when the staff pours the thermoplastic solution into the mold again, the previous cooling temperature may solidify the unformed thermoplastic solution, thereby affecting the normal use of the above devices.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to overcome the technical defects of the prior art, the utility model provides an injection mold for plastic toys with a rapid cooling structure, which can quickly change the temperature of the mold surface, thereby reducing the situation where the thermoplastic solution solidifies before being formed.

[0007] The technical solution adopted by the utility model is: an injection mold for plastic toys with a rapid cooling structure, comprising an injection molding double-plate bracket, an L-shaped support plate symmetrically fixedly installed at the lower end of the injection molding double-plate bracket, a lower mold fixedly installed at the upper end of the L-shaped support plate, a telescopic cylinder fixedly installed at the upper end of the injection molding double-plate bracket, an upper mold fixedly installed at the lower end of the telescopic cylinder, a feeding pipe is arranged on the upper surface of the upper mold, a cooling cavity is opened in the lower mold, a cold injection box is arranged in the cooling cavity, a lifting assembly for lifting the cold injection box is fixedly installed on the inner bottom wall of the cooling cavity, a cold air blower and a hot air blower are respectively arranged on the outer walls at both ends of the lower mold, the cold air blower and the hot air blower are communicated with the inside of the cold injection box in the cooling cavity through an air inlet pipe, and heat exchange holes are symmetrically and evenly opened at both ends of the lower mold.

[0008] Preferably, in order to limit the movement of the lower mold, the top outer wall of the injection molding double-plate bracket is symmetrically provided with limiting holes, and a limiting rod is inserted in the limiting hole, and the lower end of the limiting rod is fixedly connected to the upper surface of the upper mold.

[0009] Preferably, in order to enable the cold air in the cold injection box to be better conducted to the inner wall of the lower mold, refrigeration holes are opened on the inner walls of the four sides of the cold injection box.

[0010] Preferably, in order to drive the active screw to rotate by the drive motor, the lifting assembly includes a drive motor, the drive motor is fixedly installed at an angle position in the cooling chamber, and the output end of the drive motor is fixedly installed with an active screw, and the upper end of the active screw passes through an angle position of the cold injection box and is rotatably connected to the inner top wall of the cooling chamber.

[0011] Preferably, in order to drive the synchronous chain to rotate through the active lead screw, a driving sprocket is sleeved on the outer surface of the lower end of the active lead screw, and a synchronous chain is meshed with the outer surface of the active sprocket.

[0012] Preferably, in order to drive the driven screw to rotate through the synchronous chain, a driven screw is rotatably installed at the other corner of the cooling chamber, the upper end of the driven screw passes through the other corner of the cold injection box and is rotatably connected to the inner top wall of the cooling chamber, and a driven sprocket is sleeved on the outer surface of the lower end of the driven screw, and one end of the synchronous chain is meshed and arranged on the outer surface of the driven sprocket.

[0013] Preferably, in order to limit the air inlet pipe and provide a connecting space, the outer walls at both ends of the lower mold are provided with pipe holes, and the air inlet pipes arranged at the output ends of the cold air blower and the hot air blower fit and slide in the pipe holes.

[0014] Preferably, in order to enable the staff to limit the cover while pulling the cover, T-shaped blocks are distributed on the outer walls at both ends of the lower mold, and covers are symmetrically arranged on the outer walls at both ends of the lower mold. T-shaped grooves are opened on the surface of one side of the upper and lower ends of the cover, and the T-shaped blocks and the T-shaped grooves are slidably engaged with each other, and the cover covers one end of the heat exchange hole.

[0015] The beneficial effect of the utility model is that after the previous injection-molded toy is cooled and demolded, the temperature environment in the cooling chamber of the lower mold can be quickly changed through the cooperation of the cold air blower, the hot air blower, the lifting assembly and the cold injection box, thereby reducing the risk of premature cooling of the stamped toy due to the influence of the previous cooling temperature on the material after the material is injected into the lower mold. The device takes practical problems into consideration and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the positions of the hot air blower and the cold air blower of the utility model.

[0018] Figure 3 It is a schematic diagram of the position of the lifting component of the utility model.

[0019] Figure 4 It is a schematic diagram of the position of the heat exchange holes of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the lifting component of the utility model.

[0021] Figure 6 for Figure 1 A magnified view of the structure at center.

[0022] Figure 7 for Figure 4 A magnified view of the structure at point B.

[0023] Explanation of the accompanying drawings: In the figure: 1. Injection molding double plate bracket; 2. L-shaped support plate; 3. Lower mold; 4. Telescopic cylinder; 5. Upper mold; 6. Feed pipe; 7. Cooling chamber; 8. Cold injection box; 9. Lifting assembly; 901. Driving motor; 902. Active lead screw; 903. Active sprocket; 904. Synchronous chain; 905. Driven lead screw; 906. Driven sprocket; 10. Cold air blower; 11. Hot air blower; 12. Air inlet pipe; 13. Heat exchange hole; 14. Limit rod; 15. Refrigeration hole; 16. Pipe hole; 17. T-block; 18. Cover. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-Figure 7The utility model is further described as follows: an injection mold for plastic toys with a rapid cooling structure, comprising an injection molding double-plate bracket 1, an L-shaped support plate 2 is symmetrically fixedly installed at the lower end of the injection molding double-plate bracket 1, a lower mold 3 is fixedly installed at the upper end of the L-shaped support plate 2, a telescopic cylinder 4 is fixedly installed at the upper end of the injection molding double-plate bracket 1, an upper mold 5 is fixedly installed at the lower end of the telescopic cylinder 4, a feed pipe 6 is arranged on the upper surface of the upper mold 5, a cooling cavity 7 is opened in the lower mold 3, a cold injection box 8 is arranged in the cooling cavity 7, a lifting assembly 9 for lifting the cold injection box 8 is fixedly installed on the inner bottom wall of the cooling cavity 7, a cold air blower 10 and a hot air blower 11 are respectively arranged on the outer walls at both ends of the lower mold 3, the cold air blower 10 and the hot air blower 11 are connected to each other through an air inlet pipe 12 and the inside of the cold injection box 8 in the cooling cavity 7, and heat exchange holes 13 are symmetrically and evenly opened at both ends of the lower mold 3.

[0025] like Figure 1 As shown, the top outer wall of the injection molding double-plate bracket 1 is symmetrically provided with limit holes, and a limit rod 14 is inserted in the limit hole. The lower end of the limit rod 14 and the upper surface of the upper mold 5 are fixedly connected to each other, so that when the staff opens the telescopic cylinder 4 and then limits the upper mold 5 by the limit rod 14, the upper mold 5 and the lower mold 3 can be stamped, and then the thermoplastic material can be molded.

[0026] like Figure 3-Figure 7As shown, refrigeration holes 15 are provided on the inner walls of the four sides of the cold injection box 8, and the lifting assembly 9 includes a driving motor 901, which is fixedly installed at a corner position in the cooling chamber 7, and an active screw 902 is fixedly installed at the output end of the driving motor 901, and the upper end of the active screw 902 passes through a corner position of the cold injection box 8 and is rotatably connected with the inner top wall of the cooling chamber 7, and a driving sprocket 903 is sleeved on the outer surface of the lower end of the active screw 902, and a synchronous chain 904 is meshed on the outer surface of the active sprocket 903, and a driven screw 905 is rotatably installed at the other corner of the cooling chamber 7, and the upper end of the driven screw 905 passes through the other corner of the cold injection box 8 and is rotatably connected with the inner top wall of the cooling chamber 7, and the driven screw 905 A driven sprocket 906 is sleeved on the outer surface of the lower end, and one end of the synchronous chain 904 is meshed and arranged on the outer surface of the driven sprocket 906. A tube hole 16 is provided on the outer walls at both ends of the lower mold 3. The air inlet pipe 12 arranged at the output end of the cold air blower 10 and the hot air blower 11 fits and slides in the tube hole 16. T-shaped blocks 17 are distributed on the outer walls at both ends of the lower mold 3. Covers 18 are symmetrically provided on the outer walls at both ends of the lower mold 3. T-shaped grooves are provided on the upper and lower ends of the cover 18. The T-shaped blocks 17 and the T-shaped grooves are slidably engaged with each other. The cover 18 covers one end of the heat exchange hole 13, so that when the staff passes the formed plastic solution into the feed pipe 6, and then the staff turns on the telescopic cylinder 4, the lower mold 3 and the upper mold 5 are connected. The staff can turn on the power of the cooling fan 10 and the driving motor 901. Through the operation of the cooling fan 10, the cold air can be injected into the cold injection box 8 in the cooling chamber 7. Then, through the refrigeration hole 15, the interior of the lower mold 3 can be quickly cooled, so that the plastic toy can be quickly solidified and demolded. Then the staff controls the telescopic cylinder 4 to move up, and the staff takes out the plastic toy. When the staff cleans up the residual material in the lower mold 3, the staff controls the driving motor 901 to drive the motor 901 to reverse the servo motor, and drives the driving screw 902 to rotate through the driving motor 901, and drives the driving sprocket 903 to rotate through the rotation of the driving screw 902. 03 drives the synchronous chain 904 to rotate, and the chain can drive the driven screw 905 to rotate, and then the active screw 902 is threadedly engaged with the driven screw 905 and the cold injection box 8, so that the cold injection box 8 can be lowered, thereby reducing the impact of the temperature of the cold injection box 8 on the lower mold 3, and then the staff turns on the hot air blower 11, and then the staff pulls the cover 18 on the lower mold 3. By pulling the cover 18, the heat exchange hole 13 can be connected with the outside world. At this time, the hot air blower 11 can quickly change the lower temperature of the surface of the lower mold 3, so that the temperature of the surface of the lower mold 3 is increased, which can prevent the next thermoplastic material from solidifying when it just contacts the lower mold 3. This device takes the actual situation into consideration and has strong practicality.

[0027] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. An injection mold for a plastic toy with a rapid cooling structure, comprising an injection molding double-plate bracket (1), an L-shaped support plate (2) symmetrically fixedly mounted at the lower end of the injection molding double-plate bracket (1), a lower mold (3) fixedly mounted at the upper end of the L-shaped support plate (2), a telescopic cylinder (4) fixedly mounted at the upper end of the injection molding double-plate bracket (1), an upper mold (5) fixedly mounted at the lower end of the telescopic cylinder (4), a feed pipe (6) disposed on the upper surface of the upper mold (5), characterized in that: A cooling cavity (7) is provided in the lower mold (3), a cold injection box (8) is provided in the cooling cavity (7), a lifting assembly (9) for lifting the cold injection box (8) is fixedly installed on the inner bottom wall of the cooling cavity (7), a cold air blower (10) and a hot air blower (11) are respectively provided on the outer walls at both ends of the lower mold (3), the cold air blower (10) and the hot air blower (11) are both connected to the inside of the cold injection box (8) in the cooling cavity (7) through an air inlet pipe (12), and heat exchange holes (13) are symmetrically and evenly provided at both ends of the lower mold (3).

2. The injection mold for plastic toys with a rapid cooling structure according to claim 1, characterized in that: The top outer wall of the injection molded double-plate bracket (1) is symmetrically provided with limiting holes, a limiting rod (14) is inserted into the limiting hole, and the lower end of the limiting rod (14) is fixedly connected to the upper surface of the upper mold (5).

3. The plastic toy injection mold with a rapid cooling structure according to claim 1, characterized in that: Refrigeration holes (15) are provided on the four inner walls of the cold injection box (8).

4. The plastic toy injection mold with a rapid cooling structure according to claim 1, characterized in that: The lifting assembly (9) comprises a driving motor (901), the driving motor (901) being fixedly mounted at an angle in the cooling chamber (7), an active lead screw (902) being fixedly mounted at the output end of the driving motor (901), the upper end of the active lead screw (902) passing through an angle of the cold injection box (8) and being rotatably connected to the inner top wall of the cooling chamber (7).

5. The plastic toy injection mold with a rapid cooling structure according to claim 4, characterized in that: A driving sprocket (903) is sleeved on the outer surface of the lower end of the driving lead screw (902), and a synchronous chain (904) is meshedly arranged on the outer surface of the driving sprocket (903).

6. The plastic toy injection mold with a rapid cooling structure according to claim 5, characterized in that: A driven screw (905) is rotatably mounted at the other corner of the cooling chamber (7); the upper end of the driven screw (905) passes through the other corner of the cold injection box (8) and is rotatably connected to the inner top wall of the cooling chamber (7); a driven sprocket (906) is sleeved on the outer surface of the lower end of the driven screw (905); and one end of the synchronous chain (904) is meshedly arranged on the outer surface of the driven sprocket (906).

7. The plastic toy injection mold with a rapid cooling structure according to claim 1, characterized in that: The outer walls at both ends of the lower mold (3) are provided with tube holes (16), and the air inlet pipes (12) arranged at the output ends of the cold air blower (10) and the hot air blower (11) fit and slide in the tube holes (16).

8. The injection mold for plastic toys with a rapid cooling structure according to claim 1, characterized in that: T-shaped blocks (17) are distributed on the outer walls at both ends of the lower mold (3), and covers (18) are symmetrically arranged on the outer walls at both ends of the lower mold (3). T-shaped grooves are opened on the upper and lower ends of the cover (18). The T-shaped blocks (17) and the T-shaped grooves are slidably engaged with each other, and the cover (18) covers one end of the heat exchange hole (13).

Images