Auxiliary device and method for preparing spraying-free charging pile injection molding shell

Abstract

The invention discloses an auxiliary device and method for preparing a spraying-free charging pile injection molding shell, and relates to the technical field of injection molding, the auxiliary device comprises an injection molding assembly used for providing an injection molding material for a mold, and the mold is arranged on a base; the spraying-free paint supply assembly is used for preparing spraying-free paint and supplying the spraying-free paint to the injection molding assembly through a material control pipe; the motor is used for providing power for the injection molding assembly and the spraying-free paint supply assembly; wherein the spraying-free paint supply assembly comprises a supply bin, a second rotating shaft and a limiting cylinder, the second rotating shaft is rotationally arranged in the supply bin, crushing blades are further fixed to the second rotating shaft, the limiting cylinder is further vertically arranged in the supply bin in a sliding mode, a heater is arranged in the supply bin, and the heater is connected with the second rotating shaft. And the spraying-free material supply assembly has a good melting effect on a material body in the spraying-free material supply assembly, and efficient and environment-friendly preparation of the spraying-free charging pile injection molding shell is achieved.

Description

Technical Field

[0001] The present invention relates to the field of injection molding technology, and in particular to an auxiliary device and method for preparing an injection-molded shell of a spray-free charging pile. Background Art

[0002] With the rapid development of the electric vehicle industry, charging piles, as important supporting facilities for electric vehicles, have a growing market demand. As a key component of charging piles, the injection molded shell of the charging pile is not only required to have good mechanical and electrical properties, but also excellent appearance quality and weather resistance. In the traditional preparation process of the injection molded shell of the charging pile, the spraying process is usually used to treat the surface of the injection molded shell to achieve the desired appearance effect and weather resistance. However, the spraying process not only increases the production cost, but may also cause environmental pollution.

[0003] In recent years, spray-free technology has gradually been applied in the injection molding industry. By selecting specific spray-free materials, it directly forms the required appearance and weather resistance during the injection molding process without the need for subsequent spraying treatment. The application of spray-free technology not only reduces production costs, but also reduces environmental pollution, which meets the requirements of sustainable development.

[0004] However, there are still some problems in the preparation process of the injection molded shell of the spray-free charging pile. First of all, the spray-free material has high requirements for the crushing and mixing uniformity of the raw materials to ensure the thoroughness of the subsequent melting process, as well as the uniform distribution of the materials during the injection molding process and the formation of a good appearance effect. In the prior art, the crushing efficiency and effect of the raw materials are generally average, and it mainly relies on synchronous or asynchronous melting processing to ensure the uniformity of the materials. Therefore, the overall processing time is lengthened and energy-consuming. In addition, in the prior art, the degree of automation is low, which affects the stability and efficiency of the production line, resulting in errors in the injection molding process of the spray-free material, affecting product quality.

[0005] Therefore, it is necessary to provide an auxiliary device and method for preparing a spray-free charging pile injection molding shell to solve the above problems. Summary of the invention

[0006] In order to solve the above problems, the present invention provides the following technical solution: an auxiliary device for preparing an injection-molded shell of a spray-free charging pile, comprising:

[0007] An injection molding assembly, the injection molding assembly is used to provide an injection molding body into a mold, and the mold is arranged on a base;

[0008] A spray-free paint supply component is used to prepare the spray-free paint and supply the material to the injection molding component through a material control pipe;

[0009] A motor, used to provide power to the transmission assembly and the spray-free paint supply assembly;

[0010] The spray-free paint supply assembly includes a supply bin, a second rotating shaft and a limiting cylinder, wherein the second rotating shaft is rotatably arranged in the supply bin, a crushing blade is also fixed on the second rotating shaft, a limiting cylinder is also vertically slidably arranged in the supply bin, the limiting cylinder can be sleeved on the outside of the crushing blade, and a heater is arranged in the supply bin;

[0011] The injection molding assembly includes an injection molding chamber and a hollow auger, wherein the injection molding chamber has an injection molding head for providing an injection molding body into the mold, the hollow auger is rotatably disposed in the injection molding chamber, and one end of the hollow auger extends out of the injection molding chamber;

[0012] The motor has a first output end and a second output end, the first output end is used to provide power to the transmission component, the second output end is connected to the second rotating shaft, and the transmission component is used to provide power to the hollow auger.

[0013] Preferably, a flow channel is provided in the middle of the second rotating shaft, and a collecting hopper connected to the flow channel is fixed on the top of the second rotating shaft;

[0014] A plurality of material equalizing pipes in communication with the second rotating shaft are fixed to the side of the second rotating shaft.

[0015] Preferably, the spray-free paint supply assembly further comprises a telescopic rod, a chuck is fixed to the telescopic end of the rod, and the chuck can be mutually engaged with the limiting cylinder.

[0016] Preferably, a limiting plate is fixed inside the supply bin for limiting the sliding connection with the limiting cylinder.

[0017] Preferably, the transmission assembly comprises:

[0018] Transmission compartment;

[0019] A driving bevel gear, which is rotatably mounted inside the transmission compartment by a first rotating shaft;

[0020] The driven bevel gear is fixedly sleeved on the outside of the hollow auger and meshes with the driving bevel gear.

[0021] Preferably, a one-way transmission mechanism is provided between the first rotating shaft and the first output end of the motor.

[0022] Preferably, the hollow auger has a accommodating chamber in the middle, the two ends of the accommodating chamber are interconnected, a piston rod is sealingly and slidingly arranged in the accommodating chamber, a first spring is connected between the piston rod and the accommodating chamber, and a pull rope is also connected to the tail of the piston rod, the other end of the pull rope is retracted and released by a retracting roller, and the retracting roller is arranged in the transmission assembly.

[0023] Preferably, the inner wall of the limiting cylinder is provided with at least two slots;

[0024] The outer wall of the chuck is provided with a mounting groove corresponding to the clamping groove, which is used for slidingly mounting a clamping column, and a second spring is connected between the clamping column and the mounting groove;

[0025] The chuck is also provided with a driving device for driving the clamping column to move toward the direction of the second spring.

[0026] Preferably, the driving device is an electromagnet or a negative pressure suction device.

[0027] A method for preparing a spray-free charging pile injection molding shell comprises the following steps:

[0028] S1. Supply plastic raw materials, pigments and additives to the supply bin;

[0029] S2. The second output end of the motor drives the second shaft to rotate, while the supply bin is preheated;

[0030] S3. Lower the limit cylinder, the motor continues to drive the second shaft to rotate, and the supply bin continues to heat;

[0031] S4. The material control pipe supplies the injection molding body to the injection molding chamber;

[0032] S5. The first output end of the motor provides power to the transmission assembly, and the transmission assembly provides power to the hollow auger;

[0033] S6. The injection molding chamber supplies the injection molding body to the mold through a hollow auger to realize the preparation of the injection molding shell of the spray-free charging pile.

[0034] Compared with the prior art, the present invention provides an auxiliary device and method for preparing a spray-free charging pile injection molding shell, which has the following beneficial effects:

[0035] The present invention adds special pigments and additives to plastic raw materials, and then uses melt blending and injection molding to evenly distribute these pigments and additives in the plastic matrix, thereby forming a new composite material with aesthetic effects such as high gloss, dazzling colors, and pearlescent glitter, without the need for re-spraying.

[0036] The design of the crushing blades and the limiting cylinder in the spray-free paint supply assembly of the present invention can ensure the sufficient crushing and uniform mixing of the plastic raw materials, thereby improving the material utilization rate and product quality. The secondary crushing is achieved by lowering the limiting cylinder, making the plastic raw materials more finely crushed and uniform, thereby improving the subsequent melting effect and injection molding quality.

[0037] In the present invention, the entire preparation and injection molding process is powered by a motor, which realizes automatic control, reduces the difficulty and cost of manual operation, and provides strong support for the production of charging piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of an auxiliary device for preparing the injection-molded shell of a spray-free charging pile;

[0039] Figure 2 It is a structural schematic diagram of an injection molding component and a spray-free paint supply component in an auxiliary device for preparing an injection-molded shell of a spray-free charging pile;

[0040] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0041] Figure 4 This is a schematic diagram of the structure of a limiting cylinder and a chuck in an auxiliary device for preparing an injection-molded shell of a spray-free charging pile;

[0042] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B;

[0043] In the figure: 1. base; 2. mold; 3. injection molding component; 4. transmission component; 5. feed seat; 6. motor; 7. material control pipe; 8. spray-free paint supply component; 31. injection molding bin; 32. hollow auger; 33. piston rod; 34. first spring; 35. pull rope; 36. retractable roller; 41. transmission bin; 42. active bevel gear; 43. driven bevel gear; 44. first rotating shaft; 81. supply bin; 82. second rotating shaft; 83. collecting hopper; 84. material equalizing pipe; 85. crushing blade; 86. limit plate; 87. limit cylinder; 88. chuck; 89. telescopic rod; 871. slot; 881. mounting slot; 882. clamping column; 883. second spring. DETAILED DESCRIPTION

[0044] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0045] Please refer to Figure 1-Figure 5 In an embodiment of the present invention, an auxiliary device for preparing an injection-molded shell of a spray-free charging pile is provided, comprising:

[0046] An injection molding component 3, the injection molding component 3 is used to provide an injection molding body into a mold 2, and the mold 2 is arranged on a base 1;

[0047] The spray-free paint supply component 8 is used to prepare the spray-free paint and supply the material to the injection molding component 3 through the material control pipe 7;

[0048] The motor 6 is used to provide power to the transmission assembly 4 and the spray-free paint supply assembly 8;

[0049] The spray-free paint supply assembly 8 includes a supply bin 81, a second rotating shaft 82 and a limiting cylinder 87, wherein the second rotating shaft 82 is rotatably arranged in the supply bin 81, a crushing blade 85 is also fixed on the second rotating shaft 82, a limiting cylinder 87 is also vertically slidably arranged in the supply bin 81, the limiting cylinder 87 can be sleeved on the outside of the crushing blade 85, and a heater is arranged in the supply bin 81;

[0050] The injection molding assembly 3 includes an injection molding chamber 31 and a hollow auger 32. The injection molding chamber 31 has an injection molding head for providing an injection molding body into the mold 2. The hollow auger 32 is rotatably disposed in the injection molding chamber 31, and one end of the hollow auger 32 extends out of the injection molding chamber 31.

[0051] The motor 6 has a first output end and a second output end, the first output end is used to provide power to the transmission component 4 , the second output end is connected to the second rotating shaft 82 , and the transmission component 4 is used to provide power to the hollow auger 32 .

[0052] That is to say, in this embodiment, the motor 6 can provide power for the spray-free paint supply component 8 and the injection molding component 3 at the same time, reducing the overall cost; in addition, the spray-free paint supply component 8 can process the plastic raw materials very well to improve the later molding effect and reduce the re-spraying process.

[0053] Therefore, the implementation includes the following steps:

[0054] S1. Supply plastic raw materials, pigments and additives to the supply bin 81;

[0055] S2. The second output end of the motor 6 drives the second shaft 82 to rotate, while the supply bin 81 is preheated;

[0056] S3. Lower the limit cylinder 87, the motor 6 continues to drive the second shaft 82 to rotate, and the supply bin 81 continues to heat;

[0057] S4. The material control pipe 7 supplies the injection molding body to the injection molding chamber 31;

[0058] S5. The first output end of the motor 6 provides power to the transmission assembly 4, and the transmission assembly 4 provides power to the hollow auger 32;

[0059] S6. The injection molding chamber 31 supplies the injection molding body to the mold 2 through the hollow auger 32, thereby realizing the preparation of the injection molding shell of the spray-free charging pile.

[0060] Among them, special pigments and additives, such as metal powder, pearlescent powder, etc., are mainly added to the plastic raw materials, and then these pigments and additives are evenly distributed in the plastic matrix through melt blending and injection molding, thereby forming a new type of composite material with aesthetic effects such as high gloss, dazzling colors, and pearlescent glitter. There is no need to spray again, avoiding environmental pollution problems such as volatile organic compounds generated in the traditional spraying process, and saving the energy required for spraying.

[0061] In this embodiment, the crushing blades 85 and the limiting cylinder 87 provided in the spray-free paint supply assembly 8 can ensure the sufficient crushing and uniform mixing of the plastic raw materials, thereby improving the material utilization rate and product quality. Among them, secondary crushing is achieved by lowering the limiting cylinder 87, making the plastic raw materials more finely crushed and uniform, thereby improving the subsequent melting effect and injection molding quality.

[0062] In addition, the preheating and continuous heating process of the supply bin 81 optimizes the melting efficiency of the plastic raw materials and reduces energy consumption.

[0063] Furthermore, a flow channel is provided in the middle of the second rotating shaft 82, and a collecting hopper 83 connected to the flow channel is fixed on the top of the second rotating shaft 82;

[0064] A plurality of material equalizing tubes 84 in communication with the second rotating shaft 82 are fixed to the side of the second rotating shaft 82 .

[0065] The middle of the second rotating shaft 82 has a flow channel for conveying the mixture of molten plastic raw materials, pigments and additives, and the collecting hopper 83 is located at the top of the second rotating shaft 82 and is connected to the flow channel. Its function is to collect and guide the mixture of plastic raw materials, pigments and additives falling from the supply bin 81 into the flow channel.

[0066] A plurality of material distribution pipes 84 in communication with the second rotating shaft 82 are fixed to the side of the second rotating shaft 82. The material distribution pipes 84 are evenly distributed along the side of the second rotating shaft 82 and are in communication with the flow channel. Their function is to evenly distribute the mixture of plastic raw materials, pigments and additives in the flow channel to the vicinity of the crushing blades 85 to ensure that the mixture of plastic raw materials, pigments and additives can be fully crushed and mixed.

[0067] In addition, the mixture of the crushed and mixed plastic raw materials, pigments and additives is continuously heated and melted in the supply bin 81. The molten injection plastic is transported to the feed seat 5 through the material control pipe 7, and enters the injection molding bin 31 through the feed seat 5, and is evenly transported to the injection molding head by the hollow auger 32. The injection molding head injects the injection plastic into the mold 2, and after cooling and solidification, the injection molding shell of the charging pile is formed.

[0068] In this embodiment, the spray-free paint supply assembly 8 further includes a telescopic rod 89 , a chuck 88 is fixed to the telescopic end of the telescopic rod, and the chuck 88 can be mutually engaged with the limiting cylinder 87 .

[0069] The inner wall of the limiting cylinder 87 is provided with at least two slots 871;

[0070] The outer wall of the chuck 88 is provided with a mounting groove 881 corresponding to the clamping groove 871 for slidingly mounting a clamping column 882, and a second spring 883 is connected between the clamping column 882 and the mounting groove 881;

[0071] The chuck 88 is also provided with a driving device for driving the chuck column 882 to move toward the second spring 883 .

[0072] Wherein, the driving device is an electromagnet or a negative pressure suction device.

[0073] Taking the negative pressure suction device as an example, the negative pressure suction device performs suction into the installation groove 881, and at this time, the clamping column 882 overcomes the elastic force of the second spring 883 to move, thereby leaving the clamping groove 871;

[0074] Taking the electromagnet as an example, when the electromagnet is energized to generate magnetic force, the clamping column 882 overcomes the elastic force of the second spring 883 and moves, thereby disengaging from the clamping slot 871 .

[0075] Then, in implementation, when the chuck 88 and the limiting cylinder 87 are mutually engaged, the limiting cylinder 87 can be driven to move up and down by the telescopic rod 89, wherein the limiting cylinder 87 is driven to move up to achieve resetting;

[0076] When the chuck 88 and the limiting cylinder 87 are separated from each other, the chuck 88 can be independently driven downward by the telescopic rod 89 (at this time, the limiting cylinder 87 has moved down to the outside of the crushing blade 85), so that the fluid in the limiting cylinder 87 is pressed downward to accelerate discharge, thereby improving the mixing ability.

[0077] Furthermore, a limiting plate 86 is fixed inside the supply bin 81 for limiting and slidingly connecting the limiting cylinder 87 .

[0078] In this embodiment, the transmission assembly 4 includes:

[0079] Transmission compartment 41;

[0080] A driving bevel gear 42 is rotatably mounted inside the transmission compartment 41 by a first rotating shaft 44;

[0081] The driven bevel gear 43 is fixedly sleeved on the outside of the hollow auger 32 and meshes with the driving bevel gear 42 .

[0082] In addition, a one-way transmission mechanism is provided between the first rotating shaft 44 and the first output end of the motor 6 .

[0083] The one-way transmission mechanism may be an existing ratchet transmission mechanism, which will not be described in detail here.

[0084] In this embodiment, the purpose of setting the one-way transmission mechanism is that when the first output end of the motor 6 rotates in the first direction, the first rotating shaft 44 rotates at the same time, and when the first output end of the motor 6 rotates in the second direction, the first rotating shaft 44 will not be driven by the first output end of the motor 6, wherein the first direction can be clockwise rotation or counterclockwise rotation;

[0085] Of course, the motor 6 is actually a double-headed motor.

[0086] In this embodiment, the middle part of the hollow auger 32 has a accommodating chamber, the two ends of the accommodating chamber are interconnected, a piston rod 33 is sealingly and slidably arranged in the accommodating chamber, a first spring 34 is connected between the piston rod 33 and the accommodating chamber, and a pull rope 35 is also connected to the tail of the piston rod 33, and the other end of the pull rope 35 is retracted and released by a retracting roller 36, and the retracting roller 36 is arranged in the transmission assembly 4.

[0087] Then, after the injection molding body is supplied by the hollow auger 32 , the pull rope 35 can be reeled in by the retracting roller 36 to drive the piston rod 33 away from the mold 2 , thereby temporarily storing the excess injection molding body and improving the injection molding quality.

[0088] Based on this, in this embodiment, a method for preparing a spray-free charging pile injection molded shell is also provided, comprising the following steps:

[0089] S1. Plastic raw materials, pigments and additives are supplied to the supply bin 81. This is the first step in preparing the spray-free coating. The required plastic raw materials, pigments and additives are added to the supply bin 81 in a certain proportion;

[0090] S2. The second output end of the motor 6 drives the second rotating shaft 82 to rotate, and at the same time, the supply bin 81 is preheated. After the motor 6 is started, the second rotating shaft 82 is driven to rotate through the second output end, thereby driving the crushing blades 85 to preliminarily crush and mix the plastic raw materials in the supply bin 81. At the same time, the supply bin 81 starts to preheat to prepare for the subsequent heating and melting process;

[0091] S3. The limiting cylinder 87 is lowered, and the motor 6 continues to drive the second rotating shaft 82 to rotate, and the supply bin 81 is continuously heated. On the basis of preliminary crushing and mixing, the limiting cylinder 87 is lowered to further deepen the degree of crushing, realize secondary crushing, and make the plastic raw material more finely crushed and uniform.

[0092] The motor 6 continues to drive the second rotating shaft 82 to rotate, and the supply bin 81 continues to heat to ensure that the plastic raw materials can be fully melted and mixed;

[0093] S4. The material control pipe 7 supplies the injection plastic to the injection molding chamber 31. When the plastic raw material is fully melted and mixed in the supply chamber 81, the molten injection plastic is transported to the injection molding chamber 31 through the material control pipe 7;

[0094] S5. The first output end of the motor 6 provides power to the transmission assembly 4, and the transmission assembly 4 provides power to the hollow auger 32. The first output end of the motor 6 is started, and the hollow auger 32 is powered by the transmission assembly 4, so that it rotates in the injection molding chamber 31;

[0095] S6. The injection molding chamber 31 supplies the injection plastic to the mold 2 through the hollow auger 32 to realize the preparation of the injection molded shell of the spray-free charging pile. The hollow auger 32 rotates in the injection molding chamber 31 to evenly transport the molten injection plastic to the injection molding head. The injection molding head injects the injection plastic into the mold 2, and after cooling and solidification, the injection molded shell of the charging pile is formed.

[0096] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An auxiliary device for preparing a spray-free charging pile injection molding shell, characterized in that: include: An injection molding component (3), the injection molding component (3) being used to provide an injection molding body into a mold (2), the mold (2) being arranged on a base (1); A spray-free paint supply component (8) is used to prepare the spray-free paint and supply the material to the injection molding component (3) through a material control pipe (7); A motor (6) for providing power to the transmission assembly (4) and the spray-free paint supply assembly (8); The spray-free paint supply assembly (8) comprises a supply bin (81), a second rotating shaft (82) and a limiting cylinder (87), wherein the second rotating shaft (82) is rotatably arranged in the supply bin (81), a crushing blade (85) is also fixed on the second rotating shaft (82), a limiting cylinder (87) is also vertically slidably arranged in the supply bin (81), the limiting cylinder (87) can be sleeved on the outside of the crushing blade (85), and a heater is arranged in the supply bin (81); The injection molding assembly (3) comprises an injection molding chamber (31) and a hollow auger (32), wherein the injection molding chamber (31) has an injection molding head for providing an injection plastic body into the mold (2), and the hollow auger (32) is rotatably disposed in the injection molding chamber (31), and one end of the hollow auger (32) extends out of the injection molding chamber (31); The motor (6) has a first output end and a second output end, the first output end is used to provide power to the transmission component (4), the second output end is connected to the second rotating shaft (82), and the transmission component (4) is used to provide power to the hollow auger (32).

2. The auxiliary device for preparing the injection-molded shell of the spray-free charging pile according to claim 1, characterized in that: The middle part of the second rotating shaft (82) is provided with a flow channel, and the top of the second rotating shaft (82) is fixed with a collecting hopper (83) connected with the flow channel; A plurality of material equalizing tubes (84) in communication with the second rotating shaft (82) are fixed to the side of the second rotating shaft (82).

3. The auxiliary device for preparing the injection-molded shell of a spray-free charging pile according to claim 1, characterized in that: The spray-free paint supply assembly (8) further comprises a telescopic rod (89), a chuck (88) being fixed to the telescopic end thereof, and the chuck (88) can be mutually engaged with the limiting cylinder (87).

4. The auxiliary device for preparing the injection-molded shell of the spray-free charging pile according to claim 1, characterized in that: A limiting plate (86) is also fixed inside the supply bin (81) for limiting and slidingly connecting the limiting cylinder (87).

5. The auxiliary device for preparing the injection-molded shell of a spray-free charging pile according to claim 1, characterized in that: The transmission assembly (4) comprises: Transmission compartment (41); A driving bevel gear (42) is rotatably mounted inside the transmission compartment (41) by means of a first rotating shaft (44); The driven bevel gear (43) is fixedly sleeved on the outside of the hollow auger (32) and meshes with the driving bevel gear (42).

6. The auxiliary device for preparing the injection-molded shell of the spray-free charging pile according to claim 5, characterized in that: A one-way transmission mechanism is provided between the first rotating shaft (44) and the first output end of the motor (6).

7. The auxiliary device for preparing the injection-molded shell of a spray-free charging pile according to claim 1, characterized in that: The hollow auger (32) has a receiving chamber in the middle, the two ends of the receiving chamber are interconnected, a piston rod (33) is sealingly and slidably arranged in the receiving chamber, a first spring (34) is connected between the piston rod (33) and the receiving chamber, and a pull rope (35) is also connected to the tail of the piston rod (33), and the other end of the pull rope (35) is retracted and released by a retractable roller (36), and the retractable roller (36) is arranged in the transmission assembly (4).

8. The auxiliary device for preparing the injection-molded shell of a spray-free charging pile according to claim 3, characterized in that: The inner wall of the limiting cylinder (87) is provided with at least two slots (871); The outer wall of the chuck (88) is provided with a mounting groove (881) corresponding to the clamping groove (871) for slidingly mounting a clamping column (882), and a second spring (883) is connected between the clamping column (882) and the mounting groove (881); The chuck (88) is also provided with a driving device for driving the chuck column (882) to move in the direction of the second spring (883).

9. The auxiliary device for preparing the injection-molded shell of the spray-free charging pile according to claim 8, characterized in that: The driving device is an electromagnet or a negative pressure suction device.

10. A method for preparing a spray-free charging pile injection-molded shell, which uses the auxiliary device for preparing a spray-free charging pile injection-molded shell as described in any one of claims 1 to 9, characterized in that: The steps include: S1. supplying plastic raw materials, pigments and additives to the supply bin (81); S2. The second output end of the motor (6) drives the second shaft (82) to rotate, while the supply bin (81) is preheated; S3. The limiting cylinder (87) is lowered, and the motor (6) continues to drive the second shaft (82) to rotate, and the supply bin (81) continues to be heated; S4. The material control pipe (7) supplies the injection molding body to the injection molding chamber (31); S5. The first output end of the motor (6) provides power to the transmission assembly (4), and the transmission assembly (4) provides power to the hollow auger (32); S6. The injection molding chamber (31) supplies the injection molding body to the mold (2) through the hollow auger (32), thereby realizing the preparation of the injection molding shell of the spray-free charging pile.

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