A plastic toy injection mold

Abstract

The present invention specifically relates to a plastic toy injection mold, comprising a workbench, a heating screw conveyor and a work box, the heating screw conveyor is assembled on the workbench, the work box is assembled on the workbench, the work box is equipped with a servo motor, the workbench is equipped with an injection molding mechanism, a moving component is assembled between the injection molding mechanism and the work box, the injection molding mechanism comprises a fixed mold and a movable mold, the fixed mold and the movable mold are respectively provided with a fixed mold groove and a movable mold groove, the fixed mold is provided with an injection port, a positioning component is arranged between the fixed mold and the movable mold, the movable mold is equipped with an ejection component and a cooling component, the moving component comprises a screw, the screw is assembled on the work box, the movable mold is equipped with a threaded barrel, the cooling component comprises a cooling box, the movable mold is provided with an assembly groove, the cooling box is assembled on the assembly groove, the cooling box is assembled on a semiconductor refrigeration plate, the cooling box is connected with a micro water pump, the output end of the micro water pump is connected with a serpentine tube, the movable mold is provided with a cooling cavity, and the serpentine tube is assembled in the cooling cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic injection molding, and in particular relates to a plastic toy injection molding mold. Background Art

[0002] In the plastic toy manufacturing industry, injection molds are the core equipment in the production process. Traditional injection molds have some problems in design and use, which limit production efficiency, product quality and cost control. The opening and closing actions of traditional molds often rely on simple mobile mechanical devices, which leads to low opening and closing precision of the molds, resulting in deviations or defects in the injection molded products, affecting the overall quality of the products.

[0003] Secondly, the cooling system of traditional molds is often not designed to be efficient enough, resulting in a long cooling time, thereby extending the injection cycle, which not only increases production costs, but also limits the overall production capacity of the production line. For this reason, a plastic toy injection mold is now provided to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a plastic toy injection mold to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A plastic toy injection mold, comprising a workbench, a heated screw conveyor and a work box, wherein the heated screw conveyor is mounted on the left side of the upper end of the workbench, the work box is fixedly mounted on the right side of the upper end of the workbench, a servo motor is fixedly mounted inside the work box, an injection molding mechanism is mounted in the middle of the workbench, and a moving component is mounted between the injection molding mechanism and the work box;

[0007] The injection molding mechanism comprises a fixed mold and a movable mold, the fixed mold and the movable mold are respectively provided with a fixed mold groove and a movable mold groove, the fixed mold is provided with an injection port, a positioning component is provided between the fixed mold and the movable mold, and the movable mold is equipped with an ejection component and a cooling component;

[0008] The moving assembly includes a screw, which is rotatably assembled on the working box, the output end of the servo motor is drivingly connected to the screw, the movable mold is fixedly assembled with a threaded barrel at one end close to the working box, the screw is threadedly rotatably connected to the threaded barrel, the front and rear sides of the upper end of the workbench are both provided with a slide groove, a slide rod is fixedly assembled inside the slide groove, and a slider matching the slide rod sliding left and right is fixedly arranged at the lower end of the fixed mold;

[0009] The cooling assembly includes a cooling box, an assembly groove is provided on the right side of the movable mold, the cooling box is assembled inside the assembly groove, the cooling box is fixedly assembled on the right side of the semiconductor refrigeration plate, the cold end of the semiconductor refrigeration plate is arranged close to the cooling box, a micro water pump is connected to the left side of the cooling box, the input end of the micro water pump is communicated with the cooling box, the output end of the micro water pump is connected to a serpentine tube, the serpentine tube is communicated with the cooling box, the cooling box and the serpentine tube are filled with coolant, a cooling cavity is provided on the left side of the movable mold, and the serpentine tube is fixedly assembled inside the cooling cavity;

[0010] The positioning assembly includes four positioning posts and four correction piles. The four positioning posts are fixedly assembled at the four corners of the left end of the movable mold. The fixed mold is provided with positioning grooves that are slidably matched with the positioning posts. The four correction piles are fixedly assembled at the left end of the movable mold. The four correction piles are respectively located at the four corners of the movable mold groove. The fixed mold is provided with correction grooves that are slidably matched with the correction piles.

[0011] The cooling box is sealed and slidably assembled on the inner side of the assembly groove left and right, a support plate is fixedly assembled on the upper end of the workbench, the upper end of the support plate is fixedly connected to the work box, a support column is fixedly connected between the support plate and the cooling box, the support plate is slidably connected to the threaded tube left and right, a strip air groove is opened on one end of the correction pile close to the movable mold groove, an air pipe is assembled inside the movable mold, and the air pipe connects the strip air groove and the assembly groove.

[0012] Preferably, a heat sink is mounted on the right end of the semiconductor refrigeration plate, a plurality of evenly distributed heat sinks are fixedly mounted inside the heat sink, and a heat sink fan is fixedly mounted inside the heat sink.

[0013] Preferably, the support plate is arranged to be inclined toward the upper right.

[0014] Preferably, the ejection assembly includes a hydraulic cylinder, the movable mold is provided with a mounting groove, the hydraulic cylinder is fixedly assembled inside the mounting groove, the movable mold is provided with a plurality of evenly distributed ejection grooves, a plurality of the ejection grooves are connected with the movable mold grooves, the ejection grooves are slidably equipped with ejection rods left and right, a plurality of the ejection rods are fixedly provided with slides at the right ends, and the right ends of the slides are fixedly connected to the output end of the hydraulic cylinder.

[0015] Preferably, the ejection groove and the left side of the ejection rod are both stepped.

[0016] Preferably, a limit plate is fixedly provided at the left end of the hydraulic cylinder, and the limit plate is slidably mounted with a limit rod, and the left end of the limit rod is fixedly connected to the slide plate.

[0017] Advantages of the present invention:

[0018] 1. The cooling component adopts a semiconductor refrigeration plate and a coolant circulation system driven by a micro water pump, which can quickly and effectively cool the movable mold groove. The efficient cooling method shortens the injection molding cycle and improves production efficiency. In addition, during the movement of the movable mold, the cold air in the assembly groove rushes out through the strip air groove to perform secondary cooling on the molded toy, and at the same time blows the inside of the movable mold groove to avoid plastic residue, ensuring the cleanliness of the mold and the smooth progress of subsequent injection molding.

[0019] 2. The support plate is tilted to the upper right, which effectively prevents hot air from contacting the working box and protects key components such as the servo motor. At the same time, the design of structures such as support columns and slide bars also enhances the stability and durability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0021] Figure 1 This is a structural schematic diagram of a plastic toy injection mold of the present invention;

[0022] Figure 2 It is a partial cross-sectional structural schematic diagram of a plastic toy injection mold of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a fixed mold in a plastic toy injection mold of the present invention;

[0024] Figure 4 The schematic diagram of the local structure of the movable mold in the plastic toy injection mold of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0026] Figure 6 The schematic diagram of the local structure of the movable mold in the plastic toy injection mold of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 7 It is a schematic diagram of a partial cross-sectional structure of a movable mold in a plastic toy injection mold of the present invention;

[0028] Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle;

[0029] The main component symbols are described as follows:

[0030] Workbench 1, heating screw conveyor 11, work box 12, fixed mold 13, fixed mold groove 131, injection port 132, positioning groove 133, correction groove 134, movable mold 14, movable mold groove 141, positioning column 142, correction pile 143, screw 15, threaded barrel 151, slide groove 152, slide rod 153, slider 154, cooling box 16, assembly groove 161, semiconductor refrigeration plate 162, micro water pump 163, serpentine tube 164, cooling cavity 165, support plate 17, support column 171, strip air groove 172, air pipe 173, heat dissipation box 174, heat sink 175, cooling fan 176, hydraulic cylinder 18, mounting groove 181, ejection groove 182, ejection rod 183, slide plate 184, limit plate 185, limit rod 186. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figure 1-3 As shown, a plastic toy injection mold of the present invention comprises a workbench 1, a heating screw conveyor 11 and a work box 12, wherein the heating screw conveyor 11 is mounted on the upper left side of the workbench 1, and the plastic is melted and spirally conveyed quantitatively by the heating screw conveyor 11, the work box 12 is fixedly mounted on the upper right side of the workbench 1, a servo motor is fixedly mounted inside the work box 12, an injection molding mechanism is mounted in the middle of the workbench 1, and a moving component is mounted between the injection molding mechanism and the work box 12;

[0033] The injection molding mechanism includes a fixed mold 13 and a movable mold 14. The fixed mold 13 and the movable mold 14 are respectively provided with a fixed mold groove 131 and a movable mold groove 141. The fixed mold 13 is provided with an injection port 132. A positioning component is provided between the fixed mold 13 and the movable mold 14. The movable mold 14 is equipped with an ejection component and a cooling component.

[0034] The moving assembly includes a screw 15, which is rotatably assembled on the working box 12, and the output end of the servo motor is connected to the screw 15 in a transmission manner. The movable mold 14 is fixedly assembled with a threaded barrel 151 at one end close to the working box 12, and the screw 15 is threadedly rotatably connected to the threaded barrel 151. The servo motor is started to drive the screw 15 to rotate, thereby controlling the movable mold 14 to move left and right. Slide grooves 152 are provided on both the front and rear sides of the upper end of the workbench 1, and a slide rod 153 is fixedly assembled inside the slide groove 152. A slider 154 matching the slide rod 153 for sliding left and right is fixedly provided at the lower end of the fixed mold 13;

[0035] like Figure 2 , 6As shown in FIG. 7 , the cooling assembly includes a cooling box 16. A mounting groove 161 is provided on the right side of the movable mold 14. The cooling box 16 is mounted inside the mounting groove 161. The cooling box 16 is fixedly mounted on the right side of the semiconductor refrigeration plate 162. The cold end of the semiconductor refrigeration plate 162 is arranged close to the cooling box 16. A heat sink 174 is mounted on the right end of the semiconductor refrigeration plate 162. A plurality of evenly distributed heat sinks 175 are fixedly mounted inside the heat sink 174. A heat sink fan 176 is fixedly mounted inside the heat sink 174. The cooperation of the heat sheet 175 and the heat dissipation box 174 can dissipate heat from the hot end of the semiconductor refrigeration plate 162. A micro water pump 163 is connected to the left side of the cooling box 16. The input end of the micro water pump 163 is connected to the cooling box 16. The output end of the micro water pump 163 is connected to a serpentine tube 164. The serpentine tube 164 is connected to the cooling box 16. The cooling box 16 and the serpentine tube 164 are filled with coolant. A cooling cavity 165 is opened on the left side of the movable mold 14. The serpentine tube 164 is fixedly assembled inside the cooling cavity 165.

[0036] like Figure 3-6 As shown, the positioning assembly includes four positioning columns 142 and four correction piles 143. The four positioning columns 142 are fixedly assembled at the four corners of the left end of the movable mold 14. The fixed mold 13 is provided with positioning grooves 133 that slide and match with the positioning columns 142. The four correction piles 143 are fixedly assembled at the left end of the movable mold 14. The four correction piles 143 are respectively located at the four corners of the movable mold groove 141. The fixed mold 13 is provided with correction grooves 134 that slide and match with the correction piles 143. The correction piles 143 cooperate with the correction grooves 134 to improve the accuracy of injection molding and avoid the displacement of the movable mold groove 141 and the fixed mold groove 131. The cooling box 16 is sealed and slidably assembled on the inner side of the assembly groove 161 on the left and right sides. The upper end of the workbench 1 is fixedly assembled with a support plate 17, and the upper end of the support plate 17 is fixed to the working box 12 The support plate 17 is tilted toward the upper right, and the tilted support plate 17 can guide the hot air upward to prevent the hot air from contacting the working box 12. A support column 171 is fixedly connected between the support plate 17 and the cooling box 16. The support plate 17 is slidably connected to the threaded tube 151 left and right. A strip air groove 172 is opened at one end of the correction pile 143 near the movable mold groove 141. An air pipe 173 is installed inside the movable mold 14. The air pipe 173 connects the strip air groove 172 and the assembly groove 161. When the movable mold 14 moves to the right, the cold air inside the assembly groove 161 can be blown out from the strip air groove 172, thereby cooling the surface of the molded toy, and after the molded toy falls, the inside of the movable mold groove 141 can be blown and cleaned to avoid residual plastic in the groove.

[0037] like Figure 5-8As shown, the ejection assembly includes a hydraulic cylinder 18, and the movable mold 14 is provided with a mounting groove 181. The hydraulic cylinder 18 is fixedly assembled inside the mounting groove 181. The movable mold 14 is provided with a plurality of evenly distributed ejection grooves 182, and the plurality of ejection grooves 182 are connected to the movable mold groove 141. The ejection groove 182 is slidably mounted with an ejection rod 183. The ejection groove 182 and the left side of the ejection rod 183 are both stepped. After the stepped ejection rod 183 and the ejection groove 182 are retracted, the sealing performance can be enhanced, and it can also ensure The ejection point of the molded toy is of fixed size to avoid uneven plastic usage each time. A plurality of ejection rods 183 are fixedly provided with a slide plate 184 at the right end, and the right end of the slide plate 184 is fixedly connected to the output end of the hydraulic cylinder 18. A limit plate 185 is fixedly provided at the left end of the hydraulic cylinder 18. The limit plate 185 is slidably assembled with a limit rod 186, and the left end of the limit rod 186 is fixedly connected to the slide plate 184. A collection tank can be opened in the middle of the workbench 1, and the molded parts ejected by the ejection mechanism can directly enter the collection tank for storage;

[0038] When the device is used to perform injection molding on plastic toys, the servo motor in the working box 12 is first started, so that the screw 15 rotates to drive the threaded barrel 151 and the movable mold 14 to move to the left, so that the fixed mold 13 and the movable mold 14 are closed. During this period, the positioning column 142 and the positioning groove 133 are used to position and close the movable mold 141 and the fixed mold groove 131, and the correction pile 143 and the correction groove 134 are used to correct the position of the movable mold groove 141 and the fixed mold groove 131. After the fixed mold 13 and the movable mold 14 are closed, the heating screw conveyor 11 is started to transport plastic to the movable mold groove 141 and the fixed mold groove 131, and then the micro water pump 163 is started to transport cooling coolant from the cooling box 16 to the serpentine tube 164, so as to cool the movable mold groove 141. After cooling to a certain temperature range, the servo motor is started to drive the screw 15 to rotate, so that the movable mold 14 moves to the right and separates. The movable mold 14 and the fixed mold 13, during which the cooling box 16 is stabilized, the movement of the movable mold 14 will compress the air inside the assembly groove 161, so that the cold air inside the assembly groove 161 is transmitted through the air pipe 173 and rushes out from the strip air groove 172, and the plastic toy inside the movable mold groove 141 is cooled for a second time by the rushing cold air, and then the hydraulic cylinder 18 is started to push the ejector rod 183 to move toward the movable mold groove 141, so that the plastic toy is pushed out of the movable mold groove 141, and then the moving end of the hydraulic cylinder 18 drives the ejector rod 183 to reset. At this time, the movable mold 14 is still in the moving process, so the cold air blown out of the strip air groove 172 can be used to clean the movable mold groove 141, so that the injection molding step of the plastic toy is completed, and the above steps can be repeated to continuously perform injection molding on the plastic toy.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A plastic toy injection mold, comprising a workbench, a heated screw conveyor and a work box, characterized in that: The heated screw conveyor is mounted on the left side of the upper end of the workbench, the work box is fixedly mounted on the right side of the upper end of the workbench, a servo motor is fixedly mounted inside the work box, an injection molding mechanism is mounted in the middle of the workbench, and a moving component is mounted between the injection molding mechanism and the work box; The injection molding mechanism comprises a fixed mold and a movable mold, the fixed mold and the movable mold are respectively provided with a fixed mold groove and a movable mold groove, the fixed mold is provided with an injection port, a positioning component is provided between the fixed mold and the movable mold, and the movable mold is equipped with an ejection component and a cooling component; The moving assembly includes a screw, which is rotatably assembled on the working box, the output end of the servo motor is drivingly connected to the screw, the movable mold is fixedly assembled with a threaded barrel at one end close to the working box, the screw is threadedly rotatably connected to the threaded barrel, the front and rear sides of the upper end of the workbench are both provided with a slide groove, a slide rod is fixedly assembled inside the slide groove, and a slider matching the slide rod sliding left and right is fixedly arranged at the lower end of the fixed mold; The cooling assembly includes a cooling box, an assembly groove is provided on the right side of the movable mold, the cooling box is assembled inside the assembly groove, the cooling box is fixedly assembled on the right side of the semiconductor refrigeration plate, the cold end of the semiconductor refrigeration plate is arranged close to the cooling box, a micro water pump is connected to the left side of the cooling box, the input end of the micro water pump is communicated with the cooling box, the output end of the micro water pump is connected to a serpentine tube, the serpentine tube is communicated with the cooling box, the cooling box and the serpentine tube are filled with coolant, a cooling cavity is provided on the left side of the movable mold, and the serpentine tube is fixedly assembled inside the cooling cavity; The positioning assembly includes four positioning posts and four correction piles. The four positioning posts are fixedly assembled at the four corners of the left end of the movable mold. The fixed mold is provided with positioning grooves that are slidably matched with the positioning posts. The four correction piles are fixedly assembled at the left end of the movable mold. The four correction piles are respectively located at the four corners of the movable mold groove. The fixed mold is provided with correction grooves that are slidably matched with the correction piles. The cooling box is sealed and slidably assembled on the inner side of the assembly groove left and right, a support plate is fixedly assembled on the upper end of the workbench, the upper end of the support plate is fixedly connected to the work box, a support column is fixedly connected between the support plate and the cooling box, the support plate is slidably connected to the threaded tube left and right, a strip air groove is opened on one end of the correction pile close to the movable mold groove, an air pipe is assembled inside the movable mold, and the air pipe connects the strip air groove and the assembly groove.

2. A plastic toy injection mold according to claim 1, characterized in that: A heat sink is mounted on the right end of the semiconductor refrigeration plate, a plurality of evenly distributed heat sinks are fixedly mounted inside the heat sink, and a heat sink fan is fixedly mounted inside the heat sink.

3. A plastic toy injection mold according to claim 2, characterized in that: The support plate is arranged to be inclined toward the upper right.

4. A plastic toy injection mold according to claim 1, characterized in that: The ejection assembly includes a hydraulic cylinder, the movable mold is provided with a mounting groove, the hydraulic cylinder is fixedly assembled inside the mounting groove, the movable mold is provided with a plurality of evenly distributed ejection grooves, a plurality of the ejection grooves are connected with the movable mold grooves, the ejection grooves are slidably equipped with ejection rods left and right, a plurality of the ejection rods are fixedly provided with slides at the right ends, and the right ends of the slides are fixedly connected to the output end of the hydraulic cylinder.

5. A plastic toy injection mold according to claim 4, characterized in that: The ejection groove and the left side of the ejection rod are both stepped.

6. A plastic toy injection mold according to claim 4, characterized in that: A limit plate is fixedly provided at the left end of the hydraulic cylinder. The limit plate is slidably mounted on a limit rod, and the left end of the limit rod is fixedly connected to the slide plate.

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