An injection molding device for producing a plastic shell of a washing machine

Abstract

The present invention belongs to the field of intelligent manufacturing technology, and in particular, relates to an injection molding device for producing a plastic shell of a washing machine, comprising a base, and also comprising: a mold assembly, fixedly mounted on the upper end of the base, a screw feeder located on one side of the mold assembly also fixedly mounted on the upper end of the base, and an injection port of the screw feeder is connected to a feed port of the mold assembly, and a melting mechanism. The present invention can realize rapid injection molding of a plastic shell of a washing machine, separate the raw material melting and injection molding work, ensure that in the injection molding process of a high-quality washing machine shell, the raw material can be fully and completely melted, can realize rapid cooling of the processed mold assembly, and can automatically adjust the flow rate of the cooling medium according to the viscosity of the raw material, can automatically calculate the degree of wear of the mold assembly, and when the expected loss degree is reached, promptly remind the staff to take corresponding measures.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent manufacturing, and in particular relates to an injection molding device for producing a plastic shell of a washing machine. Background Art

[0002] In the production of washing machine plastic shells, injection molding machines are often used for one-piece molding. After the plastic particles are heated and melted, the molten plastic is injected into the mold through the action of a spiral conveyor.

[0003] The outer shell of a washing machine usually needs to use plastic materials with high strength, wear resistance, corrosion resistance and aging resistance. This type of special material often has a high melting point and a more complex molecular structure, and requires more energy input to make it reach a molten state, thereby ensuring good fluidity and filling performance. Higher temperature and time are required to achieve heating and melting of plastic particles. At present, the heating and melting only through the spiral conveyor barrel during the conveying process not only has insufficient melting temperature, but also a short melting time, resulting in incomplete melting of plastic particles, affecting the molding quality of the entire washing machine outer shell. Due to the high molding quality requirements of the washing machine outer shell, the viscosity of the raw materials used after melting is generally large, which makes the fluidity of the raw materials poor. In order to ensure that the plastic can fully fill the mold cavity, it is necessary to increase the injection pressure and injection speed, which will make the raw materials stay in the spiral conveyor barrel for a shorter time, making it more likely that the raw materials will not be completely melted, affecting the processing quality of the washing machine outer shell. Summary of the invention

[0004] The object of the present invention is to provide an injection molding device for producing a plastic shell of a washing machine in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: an injection molding device for producing a plastic shell of a washing machine, comprising a base, and also comprising:

[0006] A mold assembly is fixedly mounted on the upper end of the base, and a screw feeder located on one side of the mold assembly is also fixedly mounted on the upper end of the base, and an injection port of the screw feeder is connected to a feed port of the mold assembly;

[0007] A melting mechanism is fixedly mounted on the upper end of the base and is connected to the screw feeder;

[0008] A raw material viscosity detection feedback mechanism is fixedly mounted on the melting mechanism;

[0009] A cooling mechanism is installed on the mold assembly;

[0010] A cooling intensity control mechanism is fixedly mounted on the mold assembly and electrically connected to the cooling mechanism, and the raw material viscosity detection feedback mechanism is electrically connected to the cooling intensity control mechanism;

[0011] The loss reaching standard warning mechanism is fixedly mounted on the outer wall of the melting mechanism and is electrically connected to the raw material viscosity detection feedback mechanism.

[0012] In the above-mentioned injection molding device for producing the plastic shell of a washing machine, the melting mechanism includes an L-shaped supporting plate fixedly mounted on the upper end of the base, the upper end of the L-shaped supporting plate is fixedly sleeved with a melting box, the lower end of the melting box is fixedly mounted with a feeding pipe connected to the feeding port of the screw feeder, an electric valve is mounted on the feeding pipe, the upper end of the melting box is rotatably sleeved with a driving cylinder, a stirring shaft is rotatably sleeved in the driving cylinder through a bearing, a plurality of stirring blades located in the melting box are symmetrically fixedly connected to the shaft wall of the stirring shaft, a motor rotating assembly for driving the driving cylinder to rotate is fixedly mounted on the upper end of the melting box, a lower extending ring plate is fixedly sleeved on the upper end outer wall of the driving cylinder, an upper extending ring plate is fixedly sleeved on the upper end shaft wall of the stirring shaft, a torsion connecting spring sleeved outside the stirring shaft is fixedly connected between the lower extending ring plate and the upper extending ring plate, and a limiting connecting mechanism for locking and fixing the lower extending ring plate is fixedly mounted on the upper extending ring plate.

[0013] In the above-mentioned injection molding device for producing the plastic shell of a washing machine, the raw material viscosity detection feedback mechanism includes an arc-shaped mounting shell fixedly mounted on the upper end of a lower extension ring plate, a viscosity feedback resistor rod with an arc structure is fixedly mounted in the arc-shaped mounting shell, an arc-shaped opening is opened at the upper end of the arc-shaped mounting shell, and an arc-shaped guide slide rod is fixedly connected to the inner wall corresponding to the arc-shaped opening, a sliding block is slidably sleeved outside the arc-shaped guide slide rod, a damping sleeve is covered outside the arc-shaped guide slide rod, a viscosity feedback conductive contact piece electrically contacting the viscosity feedback resistor rod is fixedly connected to the lower end of the sliding block, and a toggle plate located on one side of the sliding block is fixedly connected to one side of the lower end of the upper extension ring plate.

[0014] In the above-mentioned injection molding device for producing a plastic shell of a washing machine, the cooling mechanism includes a support plate fixedly mounted outside the mold assembly, the mold assembly is covered with a cooling coil, a cooling pump is installed on the cooling coil, and the cooling pump is fixedly mounted on the support plate.

[0015] In the above-mentioned injection molding device for producing the plastic shell of a washing machine, the cooling intensity control mechanism includes a control shell fixedly mounted on the supporting plate, a plurality of friction rods arranged side by side are fixedly connected inside the control shell, a plurality of friction rods are externally slidingly sleeved with the same force-bearing plate, a resistance cylinder connected to the friction rod sleeve is fixedly sleeved on the side wall of the force-bearing plate, a thrust permanent magnet plate is fixedly connected to the side wall of the force-bearing plate, a thrust electromagnetic plate corresponding to the position of the thrust permanent magnet plate is fixedly mounted on the inner wall of the control shell, a plurality of control switches are equidistantly fixedly mounted on the bottom of the inner wall of the control shell, and a trigger round head corresponding to the position of the control switch is fixedly mounted on the lower end of the force-bearing plate.

[0016] In the above-mentioned injection molding device for producing the plastic shell of a washing machine, the loss standard warning mechanism includes a warning shell and a reduction gear box fixedly mounted on the outer wall of the L-shaped support plate, a servo motor is fixedly mounted at the input end of the reduction gear box, a reciprocating screw is rotatably connected inside the warning shell, one end of the reciprocating screw extends through the warning shell and is fixedly connected to the output end of the reduction gear box, a reciprocating plate is threadedly sleeved on the rod wall of the reciprocating screw, a warning switch is fixedly mounted on one side of the inner wall of the warning shell, and an alarm is fixedly mounted on the outer wall of the warning shell.

[0017] In the above-mentioned injection molding device for producing the plastic shell of a washing machine, the limit connection mechanism includes a plurality of limit rods movably inserted into the surface of the upper extension ring plate, the plurality of limit rods are arranged in a ring-shaped distribution, the surface of the lower extension ring plate is provided with a plurality of limit holes matching and plugged with the limit rods, the upper ends of the plurality of limit rods are fixedly connected with the same reset pull plate, the reset pull plate and the upper extension ring plate have a plurality of reset springs fixedly connected on the opposite side thereof and sleeved on the outside of the limit rods, the upper end of the upper extension ring plate is fixedly provided with a cover shell covering the outside of the reset pull plate, the upper end of the reset pull plate is fixedly connected with a reset permanent magnet plate, and the inner wall of the cover shell is fixedly provided with a reset electromagnetic plate.

[0018] In the above-mentioned injection molding device for producing a plastic shell of a washing machine, one end of the reciprocating plate is fixedly connected to a limiting slider, and the inner wall of the warning shell is provided with a limiting sliding groove that matches and slides with the limiting slider.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the provided melting mechanism, limiting connection mechanism, mold assembly, screw feeder, and raw material viscosity detection feedback mechanism, rapid injection molding of the plastic shell of the washing machine can be achieved, and the raw material melting and injection molding work can be carried out separately to ensure that in the injection molding process of the high-quality washing machine shell, the raw material can be fully and completely melted, thereby ensuring the subsequent injection molding quality. At the same time, the viscosity of the injection molding raw material can be quickly detected, and the injection molding pressure and speed can be automatically adjusted according to the viscosity of the raw material. Specifically, the greater the raw material viscosity, the greater the injection molding pressure and the faster the injection molding speed, so as to ensure that the plastic can fully fill the mold cavity. On the contrary, when the raw material viscosity is small, the injection molding pressure and speed are automatically reduced to avoid the defect of flash caused by overfilling.

[0021] 2. Through the cooling mechanism, raw material viscosity detection feedback mechanism, and cooling intensity control mechanism, the completed mold components can be cooled quickly, and the flow rate of the cooling medium can be automatically adjusted according to the viscosity of the raw materials. When the viscosity of the raw materials is large, the injection speed and pressure are large, which will generate more heat. At this time, increasing the flow rate of the cooling medium accordingly can take away the heat more quickly, avoiding uneven cooling caused by untimely heat removal, thereby preventing the final product from affecting the processing quality due to uneven shrinkage.

[0022] 3. Through the set loss reaching standard warning mechanism and raw material viscosity detection feedback mechanism, the wear degree of the mold assembly can be automatically calculated during the injection molding process. When the expected loss degree is reached, the staff will be reminded in time to take corresponding measures to prevent the mold assembly from being excessively worn, resulting in injection size deviation, thereby affecting the production size accuracy of the washing machine shell and failing to meet the requirements of subsequent installation and use. In addition, the calculation time for the mold assembly to reach the standard of wear can be automatically adjusted according to the injection speed and pressure, making the calculation of wear more accurate, because excessive injection pressure and speed will cause greater impact force when the plastic is injected into the mold assembly, further increasing the degree of mold loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of the melting mechanism of the present invention;

[0025] Figure 3 yes Figure 2 The middle part is an enlarged structural diagram;

[0026] Figure 4 It is a cross-sectional structural schematic diagram of the raw material viscosity detection feedback mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the cooling mechanism of the present invention;

[0028] Figure 6 It is a cross-sectional structural schematic diagram of the cooling intensity control mechanism of the present invention;

[0029] Figure 7 It is a schematic cross-sectional view of the structure of the loss reaching standard warning mechanism of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the position-limiting connection mechanism of the present invention.

[0031] In the figure: 1 base, 2 melting mechanism, 21 L-shaped support plate, 22 melting box, 23 feeding tube, 24 electric valve, 25 driving cylinder, 26 stirring shaft, 27 stirring blade, 28 motor rotating assembly, 29 lower extension ring plate, 210 upper extension ring plate, 211 torsion connection spring, 3 raw material viscosity size detection feedback mechanism, 31 arc-shaped installation shell, 32 viscosity feedback resistor rod, 33 arc-shaped opening, 34 arc-shaped guide slide bar, 35 sliding block, 36 viscosity feedback conductive contact piece, 37 toggle plate, 4 cooling and cooling mechanism, 41 support plate, 42 cooling coil, 43 cooling pump, 5 cooling intensity control Mechanism, 51 control shell, 52 friction rod, 53 force plate, 54 resistance cylinder, 55 thrust permanent magnet plate, 56 thrust electromagnetic plate, 57 control switch, 58 trigger round head, 6 loss reaching warning mechanism, 61 warning shell, 62 reduction gear box, 63 servo motor, 64 reciprocating screw, 65 reciprocating plate, 66 warning switch, 67 alarm, 7 limit connection mechanism, 71 limit plug rod, 72 limit plug hole, 73 reset pull plate, 74 reset spring, 75 cover shell, 76 reset permanent magnet plate, 77 reset electromagnetic plate, 8 mold assembly, 9 screw feeder. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] like Figure 1-Figure 8 As shown, an injection molding device for producing a plastic shell of a washing machine includes a base 1 and also includes:

[0034] The mold assembly 8 is fixedly mounted on the upper end of the base 1. A screw feeder 9 located on one side of the mold assembly 8 is also fixedly mounted on the upper end of the base 1. The injection port of the screw feeder 9 is connected to the feed port of the mold assembly 8.

[0035] The melting mechanism 2 is fixedly mounted on the upper end of the base 1 and is connected to the screw feeder 9. The melting mechanism 2 includes an L-shaped support plate 21 fixedly mounted on the upper end of the base 1. A melting box 22 is fixedly inserted on the upper end of the L-shaped support plate 21. A feeding pipe 23 connected to the feeding port of the screw feeder 9 is fixedly mounted on the lower end of the melting box 22. An electric valve 24 is mounted on the feeding pipe 23. A driving cylinder 25 is rotatably sleeved on the upper end of the melting box 22. A stirring shaft 26 is rotatably sleeved in the driving cylinder 25 through a bearing. A plurality of stirring shafts 26 located in the melting box 22 are symmetrically fixedly connected to the shaft wall. A motor rotating assembly 28 for driving the driving cylinder 25 to rotate is fixedly installed on the upper end of the melting box 22, a lower extending ring plate 29 is fixedly sleeved on the upper end outer wall of the driving cylinder 25, an upper extending ring plate 210 is fixedly sleeved on the upper end shaft wall of the stirring shaft 26, and a torsion connecting spring 211 sleeved on the outside of the stirring shaft 26 is fixedly connected between the lower extending ring plate 29 and the upper extending ring plate 210, which can separate the raw material melting and injection molding work, ensure that the raw material can be fully and completely melted during the injection molding process of the high-quality washing machine shell, thereby ensuring the subsequent injection molding quality.

[0036] A limit connection mechanism 7 for locking and fixing the lower extension ring plate 29 is fixedly installed on the upper extension ring plate 210, and the limit connection mechanism 7 includes a plurality of limit rods 71 ​​movably inserted on the surface of the upper extension ring plate 210, and the plurality of limit rods 71 ​​are arranged in a ring-shaped distribution. The surface of the lower extension ring plate 29 is provided with a plurality of limit holes 72 matching and plugged with the limit rods 71. The upper ends of the plurality of limit rods 71 ​​are fixedly connected to the same reset pull plate 73, and the reset pull plate 73 and the upper extension ring plate 210 are fixedly connected on the opposite side with a plurality of reset springs 74 sleeved on the outside of the limit rods 71. A cover shell 75 covering the reset pull plate 73 is fixedly installed on the upper end of the upper extension ring plate 210, and a reset permanent magnet plate 76 is fixedly connected to the upper end of the reset pull plate 73, and a reset electromagnetic plate 77 is fixedly installed on the inner wall of the cover shell 75, so that the connection mode of the drive cylinder 25 and the stirring shaft 26 is automatically switched according to the use requirements.

[0037] The raw material viscosity detection feedback mechanism 3 is fixedly mounted on the melting material mechanism 2. The raw material viscosity detection feedback mechanism 3 includes an arc-shaped mounting shell 31 fixedly mounted on the upper end of the lower extension ring plate 29. An arc-shaped viscosity feedback resistor rod 32 is fixedly mounted in the arc-shaped mounting shell 31. An arc-shaped opening 33 is opened at the upper end of the arc-shaped mounting shell 31, and an arc-shaped guide slide rod 34 is fixedly connected to the inner wall corresponding to the arc-shaped opening 33. A sliding block 35 is slidably sleeved on the outer side of the arc-shaped guide slide rod 34. The arc-shaped guide slide rod 34 is covered with a damping sleeve. The lower end of the sliding block 35 is fixedly connected to a viscosity feedback conductive contact 36 that is in electrical contact with the viscosity feedback resistor rod 32. A toggle plate 37 located on one side of the sliding block 35 is fixedly connected to one side of the lower end of the upper extension ring plate 210. The viscosity of the raw material can be quickly detected, and the detection feedback work can be completed during the stirring and mixing process, which is more convenient, faster and saves cost.

[0038] The cooling mechanism 4 is installed on the mold assembly 8. The cooling mechanism 4 includes a support plate 41 fixedly installed outside the mold assembly 8. The mold assembly 8 is covered with a cooling coil 42. A cooling pump 43 is installed on the cooling coil 42. The cooling pump 43 is fixedly installed on the support plate 41, which can achieve rapid cooling of the processed mold assembly 8.

[0039] The cooling intensity control mechanism 5 is fixedly mounted on the mold assembly 8 and electrically connected to the cooling mechanism 4. The raw material viscosity detection feedback mechanism 3 is electrically connected to the cooling intensity control mechanism 5. The cooling intensity control mechanism 5 includes a control shell 51 fixedly mounted on the supporting plate 41. A plurality of friction rods 52 arranged side by side are fixedly connected inside the control shell 51. The plurality of friction rods 52 are externally slidably sleeved with the same force-bearing plate 53. The side wall of the force-bearing plate 53 is fixedly sleeved with a resistance cylinder 54 connected to the sleeve of the friction rod 52. The side wall of the force-bearing plate 53 is fixedly connected with a thrust permanent magnet plate 55. A thrust electromagnetic plate 56 corresponding to the position of the thrust permanent magnet plate 55 is fixedly mounted on the inner wall of the control shell 51. A plurality of control switches 57 are equidistantly fixedly mounted on the bottom of the inner wall of the control shell 51. A trigger round head 58 corresponding to the position of the control switch 57 is fixedly mounted on the lower end of the force-bearing plate 53. The flow rate of the cooling medium can be automatically regulated according to the viscosity of the raw material.

[0040] The loss standard warning mechanism 6 is fixedly installed on the outer wall of the melting mechanism 2 and is electrically connected to the raw material viscosity detection feedback mechanism 3. The loss standard warning mechanism 6 includes a warning shell 61 and a reduction gear box 62 fixedly installed on the outer wall of the L-shaped support plate 21. A servo motor 63 is fixedly installed at the input end of the reduction gear box 62. A reciprocating screw rod 64 is rotatably connected in the warning shell 61. One end of the reciprocating screw rod 64 extends through the warning shell 61 and is fixedly connected to the output end of the reduction gear box 62. The rod wall of the reciprocating screw rod 64 is threadedly sleeved with a reciprocating plate. 65, a warning switch 66 is fixedly installed on one side of the inner wall of the warning shell 61, and an alarm 67 is fixedly installed on the outer wall of the warning shell 61. One end of the reciprocating plate 65 is fixedly connected to a limit slider, and the inner wall of the warning shell 61 is provided with a limit slide groove that matches and slides with the limit slider. It can automatically calculate the wear degree of the mold assembly 8. When the expected loss degree is reached, it will promptly remind the staff to take corresponding measures to prevent the mold assembly 8 from being excessively worn, resulting in injection molding size deviation, thereby affecting the production size accuracy of the washing machine shell and failing to meet the requirements of subsequent installation and use.

[0041] A PLC controller is also installed at the upper end of the base 1, and the PLC controller is electrically connected to the melting mechanism 2, the raw material viscosity detection feedback mechanism 3, the cooling mechanism 4, the cooling intensity control mechanism 5, the loss reaching warning mechanism 6 and the limit connection mechanism 7 respectively.

[0042] The operating principle of the present invention is described as follows: the raw materials are fed into the melting box 22, the melting box 22 heats the raw materials inside, and the PLC controller controls the motor rotating assembly 28 to drive the driving cylinder 25 to rotate. At this time, the limit rod 71 is inserted into the limit plug hole 72 under the action of the reset spring 74, so that the upper extension ring plate 210 and the lower extension ring plate 29 are relatively connected together, so that the self-rotation of the driving cylinder 25 drives the stirring shaft 26 to rotate synchronously, and the stirring shaft 26 cooperates with a plurality of stirring blades 27 to quickly mix and stir the raw materials in the melting box 22. When the raw materials are completely melted, the PLC controller controls the power supply device to supply power to the reset electromagnetic plate 77, and the reset electromagnetic plate 77 is energized to generate a magnetic force opposite to the reset permanent magnet plate 76, thereby providing an attraction to the reset pull plate 73, so that the limit rod 71 overcomes the elastic force of the reset spring 74 and is disengaged from the limit plug hole 72. At this time, the driving cylinder 25 and the stirring shaft 26 are connected together by the torsion connection spring 211;

[0043] When the viscosity of the raw material is relatively high, the relative rotational resistance of the raw material to the stirring blade 27 is greater, so that the torsion connection spring 211 needs to produce a larger deformation to provide sufficient connection force so that the driving cylinder 25 drives the stirring shaft 26 to rotate, thereby making the upper extension ring plate 210 rotate more relative to the lower extension ring plate 29. The displacement distance of the sliding block 35 pushed by the toggle plate 37 along the arc-shaped guide slide rod 34 is larger, and the sliding distance of the viscosity feedback conductive contact 36 on the viscosity feedback resistor rod 32 is larger, so that the access resistance value of the viscosity feedback resistor rod 32 is smaller;

[0044] After the viscosity of the raw material is detected, the PLC controller controls the motor rotating assembly 28 to stop, and synchronously opens the electric valve 24 on the feeding pipe 23, and drives the screw feeder 9 to move. The screw feeder 9 pushes the molten raw material into the mold assembly 8 for injection molding. The viscosity feedback conductive contact 36 and the viscosity feedback resistor rod 32 are connected in series to the power supply circuit of the screw feeder 9. The screw feeder 9 is a DC motor device. When the viscosity of the raw material is large and the access resistance of the viscosity feedback resistor rod 32 is small, the power supply current to the screw feeder 9 is larger, thereby making the screw feeder 9 generate a larger injection pressure and speed, and automatically regulating and using;

[0045] After the injection molding process is completed, the PLC controller controls the cooling pump 43 to work. The cooling pump 43 cooperates with the cooling coil 42 to transport and cool the cooling medium outside the mold assembly 8, and quickly cools the mold assembly 8. The viscosity feedback conductive contact 36 and the viscosity feedback resistor rod 32 are also connected in series to the power supply circuit of the thrust electromagnetic plate 56. The thrust electromagnetic plate 56 is energized to generate the same magnetism as the thrust permanent magnet plate 55, thereby pushing the force plate 53 to move relatively backward using the sliding connection between the resistance cylinder 54 and the friction rod 52. Specifically, when the viscosity of the raw material is greater, the access resistance of the viscosity feedback resistor rod 32 is smaller, indicating that the current injection molding pressure and speed are greater, and the power supply current of the thrust electromagnetic plate 56 is simultaneously greater, so that the relative displacement of the force plate 53 is greater, so that the trigger round head 58 at the lower end of the force plate 53 can press on the control switch 57 at the rear side, thereby controlling the cooling pump 43 to work at a higher power;

[0046] During the injection molding operation, the PLC controller synchronously controls the servo motor 63 to work. The servo motor 63 drives the input end of the reduction gear box 62 to rotate, and then drives the reciprocating screw 64 to rotate synchronously through the output end of the reduction gear box 62. The reciprocating plate 65 is slowly moved in the warning shell 61 through the threaded sleeve effect of the reciprocating screw 64 and the reciprocating plate 65 until the reciprocating plate 65 presses on the warning switch 66, indicating that the wear of the mold assembly 8 has reached the degree that needs to be processed. The warning switch 66 controls the alarm 67 to sound, and promptly reminds the staff to deal with it. The viscosity feedback conductive contact 36 and the viscosity feedback resistor rod 32 are also connected in series to the power supply circuit of the servo motor 63. The servo motor 63 is a DC motor. When the injection pressure and speed are large, the resistance of the viscosity feedback resistor rod 32 is small, which increases the power supply current of the servo motor 63, speeds up the speed of the servo motor 63, and triggers the alarm 67 more quickly, which can remind the staff to make corresponding treatment more timely and accurately based on the wear degree of the mold assembly 8.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding device for producing a plastic shell of a washing machine, comprising a base (1), characterized in that: Also includes: A mold assembly (8) is fixedly mounted on the upper end of the base (1); a screw conveyor (9) located on one side of the mold assembly (8) is also fixedly mounted on the upper end of the base (1); an injection port of the screw conveyor (9) is connected to a feed port of the mold assembly (8); A melting mechanism (2) is fixedly mounted on the upper end of the base (1) and is connected to the screw conveyor (9); A raw material viscosity detection feedback mechanism (3) is fixedly mounted on the melting mechanism (2); A cooling mechanism (4) is mounted on the mold assembly (8); A cooling intensity control mechanism (5) is fixedly mounted on the mold assembly (8) and is electrically connected to the cooling mechanism (4); the raw material viscosity detection feedback mechanism (3) is electrically connected to the cooling intensity control mechanism (5); A loss reaching standard warning mechanism (6) is fixedly mounted on the outer wall of the melting mechanism (2) and is electrically connected to the raw material viscosity detection feedback mechanism (3); The melting mechanism (2) comprises an L-shaped support plate (21) fixedly mounted on the upper end of the base (1); a melting box (22) is fixedly sleeved on the upper end of the L-shaped support plate (21); a driving cylinder (25) is rotatably sleeved on the upper end of the melting box (22); a stirring shaft (26) is rotatably sleeved in the driving cylinder (25) via a bearing; a motor rotating assembly (28) for driving the driving cylinder (25) to rotate is fixedly mounted on the upper end of the melting box (22); A lower extension ring plate (29) is fixedly sleeved on the outer wall of the upper end of the driving cylinder (25); an upper extension ring plate (210) is fixedly sleeved on the shaft wall of the upper end of the stirring shaft (26); a torsion connection spring (211) sleeved on the outside of the stirring shaft (26) is fixedly connected between the lower extension ring plate (29) and the upper extension ring plate (210); and a limit connection mechanism (7) for locking and fixing the lower extension ring plate (29) is provided on the upper extension ring plate (210); The raw material viscosity detection feedback mechanism (3) comprises an arc-shaped mounting shell (31) fixedly mounted on the upper end of the lower extension ring plate (29), a viscosity feedback resistor rod (32) with an arc structure fixedly mounted in the arc-shaped mounting shell (31), an arc-shaped opening (33) is opened at the upper end of the arc-shaped mounting shell (31), and an arc-shaped guide slide rod (34) is fixedly connected to the inner wall corresponding to the arc-shaped opening (33), a sliding block (35) is slidably sleeved on the outer side of the arc-shaped guide slide rod (34), and a damping sleeve is coated on the outer side of the arc-shaped guide slide rod (34), a viscosity feedback conductive contact piece (36) electrically contacting the viscosity feedback resistor rod (32) is fixedly connected to the lower end of the upper extension ring plate (210), and a toggle plate (37) located on one side of the sliding block (35) is fixedly connected to one side of the lower end of the upper extension ring plate (210); The loss reaching standard warning mechanism (6) comprises a warning shell (61) fixedly mounted on the outer wall of the L-shaped support plate (21) and a reduction gear box (62); a servo motor (63) is fixedly mounted at the input end of the reduction gear box (62); a reciprocating screw rod (64) is rotatably connected inside the warning shell (61); one end of the reciprocating screw rod (64) extends through the warning shell (61) and is fixedly connected to the output end of the reduction gear box (62); a reciprocating plate (65) is threadedly sleeved on the rod wall of the reciprocating screw rod (64); a warning switch (66) is fixedly mounted on one side of the inner wall of the warning shell (61); and an alarm (67) is fixedly mounted on the outer wall of the warning shell (61); The viscosity feedback conductive contact (36) and the viscosity feedback resistor rod (32) are connected in series to the power supply circuit of the servo motor (63).

2. The injection molding device for producing a plastic shell of a washing machine according to claim 1, characterized in that: A feed pipe (23) connected to a feed port of the screw feeder (9) is fixedly mounted at the lower end of the melt box (22), an electric valve (24) is mounted on the feed pipe (23), and a plurality of stirring blades (27) located in the melt box (22) are symmetrically fixedly connected to the shaft wall of the stirring shaft (26).

3. The injection molding device for producing a plastic shell of a washing machine according to claim 1, characterized in that: The cooling mechanism (4) comprises a support plate (41) fixedly mounted outside the mold assembly (8); the mold assembly (8) is coated with a cooling coil (42); a cooling pump (43) is mounted on the cooling coil (42); and the cooling pump (43) is fixedly mounted on the support plate (41).

4. The injection molding device for producing a plastic shell of a washing machine according to claim 3, characterized in that: The cooling intensity control mechanism (5) comprises a control shell (51) fixedly mounted on the support plate (41), a plurality of friction rods (52) arranged in parallel are fixedly connected inside the control shell (51), a plurality of friction rods (52) are slidably sleeved outside the same force-bearing plate (53), a resistance cylinder (54) connected to the friction rod (52) sleeve is fixedly sleeved on the side wall of the force-bearing plate (53), a thrust permanent magnet plate (55) is fixedly connected to the side wall of the force-bearing plate (53), a thrust electromagnetic plate (56) corresponding to the position of the thrust permanent magnet plate (55) is fixedly mounted on the inner wall of the control shell (51), a plurality of control switches (57) are fixedly mounted at equal distances on the bottom of the inner wall of the control shell (51), and a trigger round head (58) corresponding to the position of the control switch (57) is fixedly mounted on the lower end of the force-bearing plate (53).

5. The injection molding device for producing a plastic shell of a washing machine according to claim 1, characterized in that: The limit connection mechanism (7) comprises a plurality of limit rods (71) movably inserted on the surface of the upper extension ring plate (210), the plurality of limit rods (71) being arranged in an annular distribution, the surface of the lower extension ring plate (29) being provided with a plurality of limit holes (72) matching and plugging with the limit rods (71), the upper ends of the plurality of limit rods (71) being fixedly connected to a same reset pull plate (73), the reset pull plate (73) and the upper extension ring plate (210) being fixedly connected on one side thereof opposite to each other with a plurality of reset springs (74) sleeved on the outside of the limit rods (71), the upper end of the upper extension ring plate (210) being fixedly provided with a cover shell (75) sleeved on the outside of the reset pull plate (73), the upper end of the reset pull plate (73) being fixedly connected to a reset permanent magnet plate (76), and the inner wall of the cover shell (75) being fixedly provided with a reset electromagnetic plate (77).

6. The injection molding device for producing a plastic shell of a washing machine according to claim 1, characterized in that: One end of the reciprocating plate (65) is fixedly connected to a limit sliding block, and the inner wall of the warning shell (61) is provided with a limit sliding groove that matches and slides with the limit sliding block.

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