Sweeping robot shell injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a sweeping robot shell injection mold which comprises a base, a lower mold is installed at the upper end of the base, an upper mold is arranged at the upper end of the lower mold in a mold closing mode, a cooling chamber is arranged at the lower end of the lower mold, and an injection molding shell body is arranged between the upper mold and the lower mold in a mold closing injection molding mode. Compared with the prior art, the cooling device has the advantages that indirect cooling is performed on high temperature after injection molding is completed in a cold air heat exchange mode, the heat dissipation effect is effectively improved, the cooling efficiency is improved, and the service life of the cooling device is prolonged. The problems of shrinkage deformation, burr increase, influence on product quality and the like due to the fact that a shell is cooled due to excessive cooling caused by contact between traditional water cooling and a mold are avoided, the cooling effect is effectively improved, automatic material jacking and demolding are achieved through linkage cooperation between the cooling mechanism and the material jacking mechanism, and the using effect is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold for the shell of a sweeping robot. Background Technology

[0002] Robotic vacuum cleaners are a type of smart home appliance that can utilize a certain level of artificial intelligence. The outer shell of a robotic vacuum cleaner is basically formed by injection molding, which has the advantages of fast production speed and high efficiency.

[0003] Currently, the injection molding process for robot vacuum cleaner shells typically generates high temperatures. After injection molding, the shell cannot be removed until the mold reaches room temperature, resulting in a long cooling time and reduced injection efficiency. While some shell injection molds use water cooling for rapid cooling, this direct contact with the high-temperature mold can cause the hot-molded shell to shrink, deform, and develop burrs, affecting product quality. Furthermore, demolding after shrinkage and deformation is difficult. Therefore, this cooling method is not very effective. To address this issue, we provide a robot vacuum cleaner shell injection mold. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an injection mold for the outer shell of a sweeping robot.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a vacuum cleaner shell injection mold, including a base, a lower mold installed on the upper end of the base, an upper mold closed on the upper end of the lower mold, a cooling chamber provided at the lower end of the lower mold, an injection molded shell body between the upper mold and the lower mold, a cooling mechanism installed in the inner cavity of the cooling chamber, and mounting holes provided around the upper end of the base.

[0007] The cooling mechanism includes an air guide pipe, a spiral pipe, and an exhaust pipe disposed in the cooling chamber. One end of the air guide pipe and the exhaust pipe both penetrate the lower mold and extend to the outside. The air guide pipe is connected to the spiral pipe. The spiral pipe is connected to the exhaust pipe and the ejector mechanism through a three-way connector. A first solenoid valve is installed on the outside of the exhaust pipe.

[0008] Furthermore, a spiral blade is connected to the outer side of the spiral tube, and the side of the spiral blade away from the spiral tube is in contact with the inner wall of the cooling chamber. Both the spiral blade and the spiral tube are made of copper.

[0009] Furthermore, the ejector mechanism includes an air inlet pipe connected to a three-way connector, a second solenoid valve installed on the outside of the air inlet pipe, an air storage cylinder installed on the upper end of the base, one end of the air inlet pipe connected to the air storage cylinder, a piston rod movably disposed in the inner cavity of the air storage cylinder, a support plate connected to the upper end of the piston rod, and symmetrically connected top columns to the upper end of the support plate. The inner cavity of the cooling chamber is provided with two through holes corresponding to the position of the injection molded shell body, a sealing groove is provided in the inner cavity of the through holes, the upper end of the top column passes through the through holes and is connected to a top plate, and the top plate is located in the inner cavity of the sealing groove.

[0010] Furthermore, an annular groove is provided at the bottom of the inner cavity of the sealing groove, and an annular block is integrally connected to the lower end of the top plate for insertion.

[0011] Furthermore, the upper end of the base is symmetrically connected with a fixing frame, and the upper end of each fixing frame is connected with a positioning post that is movably inserted into the support plate.

[0012] Furthermore, the upper end of the lower mold is connected with positioning pins around its perimeter, and the upper end of the upper mold is provided with positioning holes for insertion.

[0013] Furthermore, the upper end of the base is connected to limit posts around its perimeter, and the upper end of the upper mold is provided with limit holes for insertion.

[0014] The beneficial effects of the injection mold for the outer shell of a sweeping robot proposed in this utility model are as follows:

[0015] 1. Cold air is delivered from the air duct to the spiral tube. The heat absorbed by the spiral tube and the spiral blades is exchanged with the cold air, turning the cold air into hot air, which is then discharged through the exhaust pipe. This facilitates rapid heat exchange after injection molding and discharge of hot air, avoiding the problems caused by excessive cooling due to contact between water cooling and the mold, which can lead to shrinkage and deformation of the outer shell and increased burrs, affecting product quality. This effectively improves the cooling effect.

[0016] 2. By closing the first solenoid valve and opening the second solenoid valve, the incoming cold air then enters the air inlet pipe through the spiral tube and the three-way connector, and then enters the air storage cylinder. As the cold air in the inner cavity of the air storage cylinder gradually increases, the pressure of the cold air gradually compresses and increases until the compressed cold air pushes the piston rod upward. The piston rod drives the support plate and the top column to move upward, and the top column drives the top plate to lift the injection molded shell body, thereby realizing automated and rapid demolding and effectively improving the use effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the overall disassembled three-dimensional structure proposed in this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the lower mold proposed in this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the cooling mechanism proposed in this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the top material mechanism proposed in this utility model;

[0022] Figure 6 This is a schematic diagram of the front sectional view of the lower mold and upper mold combined according to the present invention;

[0023] Figure 7 This is a three-dimensional half-section view of the lower mold proposed in this utility model.

[0024] In the diagram: 1. Base; 2. Lower mold; 3. Upper mold; 4. Positioning pin; 5. Limiting post; 6. Mounting hole; 7. Positioning hole; 8. Limiting hole; 9. Cooling mechanism; 91. Air guide pipe; 92. Spiral pipe; 93. Spiral blade; 94. Three-way connector; 95. Exhaust pipe; 96. First solenoid valve; 97. Ejector mechanism; 971. Air inlet pipe; 972. Second solenoid valve; 973. Air storage cylinder; 974. Piston rod; 975. Support plate; 976. Ejector column; 977. Ejector plate; 978. Annular block; 979. Fixing frame; 9710. Positioning post; 10. Cooling chamber; 11. Injection molded shell body; 12. Through hole; 13. Sealing groove; 14. Annular groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-7A vacuum cleaner robot shell injection mold includes a base 1, with mounting holes 6 around the upper circumference of the base 1; a lower mold 2 is mounted on the upper end of the base 1, an upper mold 3 is closed on the upper end of the lower mold 2, and a cooling chamber 10 is provided at the lower end of the lower mold 2; the upper mold 3 and the lower mold 2 are closed together to injection mold the injection molded shell body 11; a cooling mechanism 9 is installed in the inner cavity of the cooling chamber 10, and the cooling mechanism 9 includes an air guide pipe 91, a spiral pipe 92, and an exhaust pipe 930 disposed in the inner cavity of the cooling chamber 10. 5. One end of the air guide pipe 91 and the exhaust pipe 95 both penetrate the lower mold 2 and extend to the outside. The air guide pipe 91 is connected to the spiral pipe 92. The spiral pipe 92 is connected to the exhaust pipe 95 and the ejector mechanism 97 through the three-way connector 94. The first solenoid valve 96 is installed on the outside of the exhaust pipe 95. The spiral blade 93 is connected to the outside of the spiral pipe 92. The side of the spiral blade 93 away from the spiral pipe 92 is in contact with the inner wall of the cooling chamber 10. The spiral blade 93 and the spiral pipe 92 are both made of copper.

[0027] After connecting the external cold air delivery device to the air duct 91, the cold air delivery valve is opened, allowing the cold air delivery device to deliver cold air from the air duct 91 to the spiral tube 92. Since the lower mold 2 and the upper mold 3 have already closed to produce the injection molded shell body 11, the temperatures of the lower mold 2, the upper mold 3, and the injection molded shell body 11 are all high, resulting in a high temperature inside the cooling chamber 10. The spiral tube 9 and the spiral blades 93 that are in contact with the inner wall of the cooling chamber 10 have absorbed a large amount of heat. Therefore, when the copper spiral tube 92 delivers cold air into the cooling chamber 10, the cold air in the air quickly exchanges heat with the heat absorbed by the spiral tube 9, turning the cold air into hot air, which is then discharged through the exhaust pipe 95. This facilitates rapid heat exchange after injection molding and discharge of hot air, avoiding the problems of excessive cooling caused by the traditional water cooling system contacting the mold, which leads to shrinkage and deformation of the shell due to cold, increased burrs, and other issues affecting product quality. This effectively improves the cooling effect.

[0028] The ejector mechanism 97 includes an air inlet pipe 971 connected to a three-way connector 94. A second solenoid valve 972 is installed on the outside of the air inlet pipe 971. An air storage cylinder 973 is installed on the upper end of the base 1. One end of the air inlet pipe 971 is connected to the air storage cylinder. A piston rod 974 is movably arranged in the inner cavity of the air storage cylinder 973. A support plate 975 is connected to the upper end of the piston rod 974. A top column 976 is symmetrically connected to the upper end of the support plate 975. The inner cavity of the cooling chamber 10 is provided with two through holes 12 corresponding to the position of the injection molded shell body 11. A sealing groove 13 is provided in the inner cavity of the through hole 12. The upper end of the top column 976 passes through the through hole 12 and is connected to a top plate 977. The top plate 977 is located in the inner cavity of the sealing groove 13. An annular groove 14 is provided at the bottom end of the inner cavity of the sealing groove 13. An annular block 978 is integrally connected to the lower end of the top plate 977.

[0029] The temperature of the air discharged from the exhaust pipe 95 is measured by an external temperature detector. When the temperature reaches the mold opening temperature, the upper mold 3 is removed. The first solenoid valve 96 is automatically closed and the second solenoid valve 972 is opened by an external controller. The incoming cold air then enters the intake pipe 971 through the spiral tube 92 and the three-way connector 94, and then enters the air storage cylinder 973. As the amount of cold air in the inner cavity of the air storage cylinder 973 gradually increases, and the inner volume of the air storage cylinder 973 is relatively small, the pressure of the cold air gradually increases due to compression. The compressed cold air pushes the piston rod 974 upward, which in turn moves the support plate 975 and the top column 976 upward. The top column 976 then moves the top plate 977 to lift the injection molded shell body 11, thereby achieving automated and rapid demolding and effectively improving the performance. Furthermore, the annular block 978 at the lower end of the top plate engages with the annular groove 14 inside the sealing groove 13. Under normal injection conditions, the top plate 977 is embedded in the sealing groove 13, and the annular block 978 is engaged in the annular groove 14, effectively achieving a seal and preventing leakage of the injection molded plastic.

[0030] The upper end of the base 1 is symmetrically connected with a fixing frame 979. The upper end of each fixing frame 979 is connected with a positioning column 9710 that is movably inserted into the support plate 975. When the support plate 975 moves the top material upward, it is limited to move on the outside of the positioning column 9710, which effectively improves the moving stability of the support plate 975.

[0031] The upper end of the lower mold 2 is connected with positioning pins 4 around its top, and the upper end of the upper mold 3 is provided with positioning holes 7 that are inserted into it. The upper end of the base 1 is connected with limit posts 5 around its top, and the upper end of the upper mold 3 is provided with limit holes 8 that are inserted into it.

[0032] When the upper mold 3 moves down to close the mold, the limiting pin 5 is first inserted through the limiting hole 8 at the upper end of the upper mold 3 to initially limit its movement. Then, the positioning pin 4 at the upper end of the lower mold 2 is inserted through the positioning hole 7 at the upper end of the upper mold 3, which effectively and accurately positions and closes the lower mold 2 and the upper mold 3, thus effectively improving the performance.

[0033] Working Principle: In use, this invention is controlled by an external controller connected to the first solenoid valve 96 and the second solenoid valve 972. During operation, an external cold air delivery device is connected to the air duct 91. Opening the cold air delivery valve allows the device to deliver cold air from the air duct 91 to the spiral tube 92. The spiral tube 92 and the spiral blades 93, which are in contact with the inner wall of the cooling chamber 10, have already absorbed a large amount of heat. Therefore, when the copper spiral tube 92 delivers cold air into the cooling chamber 10, the cold air in the air quickly exchanges heat with the heat absorbed by the spiral tube 92, turning the cold air into hot air, which is then discharged through the exhaust pipe 95. This facilitates rapid heat exchange after injection molding and discharge of hot air, avoiding the excessive cooling caused by contact between water cooling and the mold, which can lead to shrinkage, deformation, and increased burrs on the outer shell. This effectively improves the cooling effect, addressing issues such as product quality. An external temperature sensor measures the temperature of the air discharged from the exhaust pipe 95. When the temperature reaches the mold-opening temperature, the upper mold 3 is removed. An external controller automatically closes the first solenoid valve 96 and opens the second solenoid valve 972. The incoming cold air then passes through the spiral tube 92 and the three-way connector 94 into the air inlet pipe 971, and subsequently into the air storage cylinder 973. As the amount of cold air in the air storage cylinder 973 gradually increases, the pressure of the cold air gradually compresses and increases until the compressed cold air pushes the piston rod 974 upwards. The piston rod 974 then moves the support plate 975 and the top column 976 upwards. The top column 976 then moves the top plate 977 to lift the injection molded shell body 11, thus achieving automated and rapid demolding and effectively improving the performance.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sweeping robot shell injection mold comprising a base (1), characterized in that, The upper end of the base (1) is provided with a lower mold (2), the upper end of the lower mold (2) is provided with an upper mold (3), the lower end of the lower mold (2) is provided with a cooling chamber (10), the upper mold (3) and the lower mold (2) are injection molded with an injection shell body (11), the inner cavity of the cooling chamber (10) is provided with a cooling mechanism (9), and the upper end of the base (1) is provided with mounting holes (6) around. The cooling mechanism (9) comprises a gas guide pipe (91), a spiral pipe (92) and an exhaust pipe (95) arranged in the inner cavity of the cooling chamber (10), one end of the gas guide pipe (91) and the exhaust pipe (95) penetrates the lower mold (2) and extends to the outside, the gas guide pipe (91) is connected with the spiral pipe (92), the spiral pipe (92) is connected with the exhaust pipe (95) and the material feeding mechanism (97) through a three-way connector (94), and the outer side of the exhaust pipe (95) is provided with a first electromagnetic valve (96).

2. The shell injection mold for a robotic vacuum cleaner of claim 1, wherein, The outer side of the spiral pipe (92) is connected with a spiral fin (93), one side of the spiral fin (93) away from the spiral pipe (92) is attached to the inner wall of the cooling chamber (10), and the spiral fin (93) and the spiral pipe (92) are both made of copper material.

3. The robotic vacuum cleaner shell injection mold of claim 1, wherein, The material feeding mechanism (97) comprises an air inlet pipe (971) connected with the three-way connector (94), the outer side of the air inlet pipe (971) is provided with a second electromagnetic valve (972), the upper end of the base (1) is provided with an air cylinder (973), one end of the air inlet pipe (971) is connected with the air cylinder, the inner cavity of the air cylinder (973) is movably provided with a piston rod (974), the upper end of the piston rod (974) is connected with a support plate (975), the upper end of the support plate (975) is connected with a plurality of top columns (976) symmetrically, the inner cavity of the cooling chamber (10) is provided with two through holes (12) corresponding to the position of the injection shell body (11), the inner cavity of the through hole (12) is provided with a sealing groove (13), the upper end of the top column (976) penetrates the through hole (12) and is connected with a top disc (977), and the top disc (977) is located in the inner cavity of the sealing groove (13).

4. The robotic vacuum cleaner housing injection mold of claim 3, wherein, The inner cavity of the sealing groove (13) is provided with an annular groove (14) at the bottom end, and the lower end of the top disc (977) is integrally connected with an annular block (978) inserted therein.

5. The robotic vacuum cleaner housing injection mold of claim 3, wherein, The upper end of the base (1) is symmetrically connected with a fixing frame (979), and the upper end of the fixing frame (979) is connected with a positioning column (9710) movably inserted with the support plate (975).

6. The robotic vacuum cleaner housing injection mold of claim 1, wherein, The upper end of the lower mold (2) is connected with a positioning pin (4) around, and the upper end of the upper mold (3) is provided with a positioning hole (7) inserted therewith.

7. The robotic vacuum cleaner shell injection mold of claim 1, wherein, The upper end of the base (1) is connected with a limiting column (5) around, and the upper end of the upper mold (3) is provided with a limiting hole (8) inserted therewith.

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