Injection molding device for smart meter housing and production method thereof

Abstract

The application relates to the technical field of intelligent electric meter, in particular to an injection molding device for an intelligent electric meter shell and a production method thereof, which comprises a base, the top of the base is fixedly connected with a molding mechanism, the molding mechanism comprises a closing frame, the inner side of the closing frame is provided with an injection molding group frame, the base and the molding mechanism are arranged, integrated injection molding processing of the intelligent electric meter shell is realized, mold closing, feeding, mold opening and automatic discharging are continuously completed in an integrated mode, manual step-by-step operation is not needed, the front side and the rear side are synchronously closed and aligned during the mold closing process, feeding and injection molding can be directly carried out after the mold closing is completed, the processing procedure is shortened, the processing efficiency is effectively improved, the molding shell is directly pushed out of the mold and demolded through the heating nozzle during the mold opening, an additional demolding and material taking step is saved, the automation degree of the overall processing is further improved, and the process dispersion of the existing intelligent electric meter shell injection molding device is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of smart meter technology, and more specifically, to an injection molding apparatus and a method for producing a smart meter housing. Background Technology

[0002] Smart meters are new types of meters equipped with electronic chips that can measure, transmit, and manage electricity usage data in real time. Compared with traditional mechanical meters, they have advantages such as higher metering accuracy, more convenient data collection, and support for remote management. They are widely used in various electricity metering scenarios, including residential and industrial electricity consumption. The meter casing, as the structure that protects the internal electronic components of the smart meter, is mostly manufactured using injection molding, which places high demands on the dimensional accuracy, sealing performance, and structural strength of the structure.

[0003] According to patent document CN113770875B, a smart meter injection molding equipment is disclosed, comprising a support platform, a material fixing device, and a finishing device. This invention can solve the following problems that may be encountered in the finishing and polishing process of the upper shell of existing smart water meter shells: a. Manually finishing and polishing the inner walls of the upper groove and circular groove of the upper shell using deburring tools is labor-intensive and time-consuming, and only one smart water meter shell can be finished and polished at a time, resulting in low polishing efficiency; b. During manual finishing and polishing, uneven finishing or incomplete finishing is prone to occur, causing the subsequent installation of the glass plate on the water meter shell to be impossible, thus requiring secondary processing and reducing the production efficiency of smart water meters.

[0004] When injection molding the casing of an electric meter, molten injection material is usually injected into the pre-closed mold cavity. After the material cools and solidifies, the mold is opened and the pre-formed casing blank is removed. However, traditional injection molding equipment has a decentralized process, which usually requires multiple sets of power mechanisms to drive multiple steps such as mold closing, mold shut-off, feeding, demolding, and unloading. The equipment structure is complex, the power cost is high, and there is a lot of manual intervention. The processing efficiency and automation level may not be able to meet the needs of mass production. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an injection molding device and production method for a smart meter housing. The technical problem to be solved by the present invention is that multiple sets of power mechanisms are required to drive multiple steps such as mold closing, mold shut-off, feeding, demolding, and unloading. The equipment structure is complex, the power cost is high, and there is a lot of manual intervention. The processing efficiency and automation level may not be able to meet the needs of mass production.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An injection molding device for a smart meter housing includes a base, and a molding mechanism is fixedly connected to the top of the base. The molding mechanism includes a closing frame, and an injection molding assembly is provided on the inner side of the closing frame; The closed frame includes an upright plate, a top plate is fixedly connected to the top of the upright plate, an injection molding material heating chamber is fixedly connected to the top of the top plate, and material conveying pipes are fixedly connected to both the left and right sides of the injection molding material heating chamber.

[0007] As a further embodiment of the present invention: A horizontal L-shaped side plate is slidably connected to the left and right sides of the front side of the bottom of the top plate; a horizontal push-pull plate is fixedly connected to the bottom of the front side of the two horizontal L-shaped side plates; a guide inclined plate connecting rod is fixedly connected to the outer side of the bottom of the two horizontal push-pull plates; a front closing cover is fixedly connected to the outer side of the rear side of the two horizontal push-pull plates; a guide inclined plate is fixedly connected to the rear side of the two guide inclined plate connecting rods; a rear L-shaped push-pull plate is fixedly connected to the rear side of the bottom of the two horizontal L-shaped side plates; an electric push rod is provided on the inner side of the two rear L-shaped push-pull plates; a push-pull horizontal plate is fixedly connected to the front end of the electric push rod; and triangular abutments are fixedly connected to the left and right sides of the front side of the push-pull horizontal plate.

[0008] As a further embodiment of the present invention: the injection molding frame includes two sets of side plates. Horizontal bars are fixedly connected to the top and bottom rear sides of both sets of side plates. The middle of the outer sides of the two top horizontal bars is fixedly connected to the bottom of the upright plate. The middle of the inner sides of the two bottom horizontal bars is fixedly connected to the bottom of the electric push rod. Rectangular side plates are fixedly connected to the inner sides of both sets of side plates. Rectangular frames are fixedly connected to the outer sides of both sets of side plates near the rectangular side plates. Rear closing plate sliders are slidably connected to the rear inner sides of both sets of rectangular frames. Rear closing plates are fixedly connected to the outer sides of both sets of rear closing plate sliders.

[0009] As a further embodiment of the present invention: A horizontal L-shaped guide plate is fixedly connected to the front side of the outer sides of both sets of rectangular frames; a columnar lifting rod is slidably connected to the inner wall of the outer side of both sets of horizontal L-shaped guide plates; a stop block is fixedly connected to the rear side of both sets of columnar lifting rods away from the horizontal L-shaped guide plate; an inverted L-shaped push-pull side rod is fixedly connected to the outer side of both sets of columnar lifting rods; a mold plate is fixedly connected to the inner end of both sets of columnar lifting rods on the left and right sides; the inner sides of both sets of inverted L-shaped push-pull side rods on the left and right sides are fixedly connected to the outer sides of both sets of mold plates; rectangular side plate guide grooves are opened on both sides of the middle portion of the two rectangular side plates; and hinge blocks are fixedly connected to the top and bottom of the front side of the outer sides of the two rectangular side plates.

[0010] As a further embodiment of the present invention: an inner guide plate is fixedly connected to the front side of both sets of side plates; a heating nozzle is provided on the rear side of the middle inner side of both sets of mold plates; the rear ends of both heating nozzles are fixedly connected to the ends of the two material conveying pipes away from the injection material heating chamber; the rear sides of the outer walls of both heating nozzles are fixedly connected to the inner walls of the outer sides of the two rear L-shaped push-pull plates; the rear sides of the middle inner side of both rectangular side plates are slidably connected to the left and right sides of the push-pull horizontal plate; and a top hinged upright is fixedly connected to the front side of the outer side of both sets of rectangular frames.

[0011] As a further embodiment of the present invention: Z-shaped rotating rods are rotatably connected to the outer sides of both sets of top hinged uprights, and Z-shaped rotating rod grooves are provided on the outer sides of both sets of Z-shaped rotating rods. Vertical Z-shaped abutments are fixedly connected to the inner sides of both sets of Z-shaped rotating rods that are close to each other. The rear sides of both sets of vertical Z-shaped abutments that are close to each other are beveled. The rear sides of both sets of vertical Z-shaped abutments are in contact with the front sides of two triangular abutments. The inner walls of one side of the Z-shaped rotating rod grooves provided by the top and bottom sets of Z-shaped rotating rods are slidably connected to the outer walls of the left and right sets of abutments.

[0012] As a further embodiment of the present invention: the inner walls of the front sides of the left and right sets of hinge blocks are rotatably connected to arc-shaped rotating crossbars, the inner sides of the arc-shaped rotating crossbars are rotatably connected to bidirectional hinge blocks, the inner sides of the bidirectional hinge blocks are rotatably connected to push-pull side rods, the outer sides of the push-pull side rods are slidably connected to the inner sides of the left and right sets of inner guide plates, the outer sides of the arc-shaped rotating crossbars are rotatably connected to front and rear push-pull side plates, and the rear sides of the front and rear push-pull side plates are fixedly connected to the inner sides of the left and right sets of rear closing plate sliders.

[0013] As a further embodiment of the present invention: a horizontal U-shaped push-pull rod is fixedly connected to the middle of the inner side of the two front and rear push-pull side plates on the left and the two front and rear push-pull side plates on the right. The inner sides of the two sets of horizontal U-shaped push-pull rods extend to the inner sides of the two rectangular side plates through the two rectangular side plate guide grooves. The rear sides of the inner sides of the two sets of horizontal U-shaped push-pull rods are fixedly connected to the top and bottom of the left and right sides of the push-pull horizontal plate. The front sides of the inner sides of the two sets of push-pull side rods are fixedly connected to the two sides of the front sides of the outer sides of the two horizontal L-shaped side plates.

[0014] As a further embodiment of the present invention: the base includes a base plate, and guide base plates are fixedly connected to the left and right sides of the top center of the base plate. Connecting side plates are fixedly connected to the sides of the top of the two guide base plates that are close to each other. The tops of the two connecting side plates are fixedly connected to the rear sides of the outer sides of the two bottom side plates. Material guide chute is provided on the left and right sides of the top of the base plate. Conveyor belts are fixedly connected to the left and right sides of the bottom of the base plate. The middle of the top of the two guide base plates is slidably connected to the bottom of the two material guide chute.

[0015] In addition, the present invention also relates to a method for producing an injection molding apparatus for a smart meter housing, comprising the following steps: Step 1: Process and prepare each component of the injection molding device. According to the assembly requirements, assemble the base plate, guide base plate, connecting side plate, guide chute, and conveyor belt into the bottom support and conveying mechanism of the device. Then, fix and install the injection material heating chamber, side support upright plate, drive mechanism, mold closing and sealing mechanism, and material pushing and discharging mechanism in sequence to complete the assembly and debugging of the entire injection molding device and confirm that each mechanism moves smoothly without jamming. Step 2: Based on the specifications of the smart meter housing to be processed, adjust the mold closing accuracy of the two mold plates, adjust the stroke parameters of the electric push rod, confirm the sealing effect of the front closing cover, the rear closing plate and the mold plate after mold closing, confirm that the feeding channel of the guide plate is aligned with the opening position of the molding cavity, adjust the discharge parameters and movement position of the heating nozzle, and complete the equipment debugging before injection molding. Step 3: Add the mixed injection molding raw materials to the injection molding material heating chamber, start the heating mechanism to heat and melt the raw materials, and continuously maintain the temperature to keep the raw materials in a molten and flowing state, waiting for injection molding to begin; Step 4: Start the mold closing process of the equipment. The electric push rod starts and pushes the push-pull horizontal plate forward. Through the triangular abutment block extrusion transmission, it drives the Z-shaped rotating rod to rotate, which in turn pushes the column-shaped lifting upright to move closer to the left and right sets of mold plates to complete the mold closing. During the synchronous transmission, the push-pull horizontal plate drives the horizontal U-shaped push-pull rod to move forward, which in turn drives the front closing cover to move backward to close the front side of the mold plate. The guide plate is aligned with the feeding opening of the forming cavity. At the same time, it drives the heating nozzle to move to the notch on the inner rear side of the mold plate and fix it. The rear closing plate moves forward to close the rear side of the mold plate, completing the mold closing, sealing and positioning. Step 5: Open the discharge valve of the injection material heating chamber. The molten injection material is transported to the heating nozzle through the material conveying pipe and evenly injected into the molding cavity formed by the closed mold plate. After the injection feeding is completed, close the discharge valve and keep it still to wait for the injection material to cool and solidify in the molding cavity. Step Six: After the injection molding material has completely cooled and solidified, start the mold opening and material discharge process. The electric push rod drives the push-pull horizontal plate to return to its original position, the triangular stop block disengages from the vertical Z-shaped stop block, the Z-shaped rotating rod rotates in the opposite direction, driving the columnar lifting upright and the mold plate to move outward to complete the mold opening. The synchronous transmission drives the horizontal L-shaped side plate, the front closing cover, and the guide inclined plate to move forward to open the front side of the molding cavity. The rear L-shaped push-pull plate drives the heating nozzle to return to its original position. The front side of the heating nozzle pushes the molded smart meter housing forward to disengage from the mold cavity to complete the material discharge. Step 7: The molded shell, detached from the mold cavity, slides down along the two guide ramps and falls onto the conveyor belt below through the guide chute. The conveyor belt transports the molded shell to the next processing station, thus completing the injection molding process of a single batch of smart meter shells. Repeating the above steps allows for continuous batch production.

[0016] The beneficial effects of this invention are as follows: This invention, through the inclusion of a base and a molding mechanism, achieves integrated injection molding of smart meter housings. Mold closing, feeding, mold opening, and automatic unloading are completed continuously and in one integrated process, eliminating the need for manual step-by-step operations. During mold closing, the front and rear sides are simultaneously aligned and sealed. After mold closing, injection molding can proceed directly, reducing processing steps and effectively improving efficiency. Furthermore, the heated nozzle directly ejects the molded housing during mold opening, eliminating additional demolding and material removal steps, further enhancing the overall automation level of the process and effectively solving the problems of existing smart meter housing injection molding processes. The process of molding is scattered, requiring multiple sets of power mechanisms to drive the mold closing, mold shut-off, feeding, demolding, and unloading actions. This results in complex equipment structures, high power costs, and a lot of manual intervention, making it difficult to meet the needs of mass production in terms of processing efficiency and automation. By using a transmission design that synchronizes multiple actions, the original independent processing steps are integrated into a single push rod drive that can be completed synchronously. This greatly simplifies the equipment structure, reduces power configuration costs, and achieves integrated processing with automatic unloading upon mold opening, effectively adapting to the continuous batch injection molding production of smart meter housings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the present invention; Figure 3 This is a three-dimensional structural diagram of the molding mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional separation structure of the molding mechanism of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the closure frame of the present invention; Figure 6This is a schematic diagram of the three-dimensional separation structure of the closure frame of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the injection molding frame of the present invention; Figure 8 This is a schematic diagram of the three-dimensional separation structure of the injection molding frame of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a three-dimensional structural diagram of the base of the present invention.

[0018] In the diagram: 1. Base; 11. Base plate; 12. Guide base plate; 13. Connecting side plate; 14. Material guide chute; 15. Conveyor belt; 2. Molding mechanism; 21. Closing frame; 211. Vertical plate; 212. Top plate; 213. Injection material heating chamber; 214. Material conveying pipe; 215. Horizontal L-shaped side plate; 216. Horizontal push-pull plate; 217. Front closing cover; 218. Material guide chute connecting rod; 219. Material guide chute; 2110. Rear L-shaped push-pull plate; 2111. Electric push rod; 2112. Push-pull horizontal plate; 2113. Triangular stop block; 22. Injection molding assembly frame; 221. Side plate; 222. Horizontal bar; 223. Rectangular frame; 224. Rear... 225. Closed plate slider; 226. Rear closed plate; 227. Horizontal L-shaped guide plate; 228. Column-shaped lifting upright; 229. Abutment block; 220. Inverted L-shaped push-pull side rod; 2210. Mold plate; 2211. Rectangular side plate; 2212. Rectangular side plate guide groove; 2213. Hinge block; 2214. Inner guide plate; 2215. Heating nozzle; 2216. Top hinge upright; 2217. Z-shaped rotating rod; 2218. Vertical Z-shaped abutment block; 2219. Z-shaped rotating rod slide groove; 22110. Push-pull side rod; 22111. Two-way hinge block; 22112. Arc-shaped rotating crossbar; 22113. Front and rear push-pull side plates; 22114. Horizontal U-shaped push-pull rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-2 As shown, the present invention provides an injection molding device for a smart meter housing, including a base 1, and a molding mechanism 2 fixedly connected to the top of the base 1.

[0021] like Figure 3-9As shown, the molding mechanism 2 includes a closing frame 21. An injection molding assembly frame 22 is arranged inside the closing frame 21. The closing frame 21 includes a vertical plate 211. A top plate 212 is fixedly connected to the top of the vertical plate 211. An injection material heating chamber 213 is fixedly connected to the top of the top plate 212. Material conveying pipes 214 are fixedly connected to both the left and right sides of the injection material heating chamber 213. Horizontal L-shaped side plates 215 are slidably connected to the left and right sides of the bottom front side of the top plate 212. Horizontal push-pull plates 216 are fixedly connected to the bottom of the outer front side of the two horizontal L-shaped side plates 215. Guide inclined plate connecting rods 218 are fixedly connected to the outer bottom of the two horizontal push-pull plates 216. Front closing covers 217 are fixedly connected to the outer rear side of the two horizontal push-pull plates 216. Two guide... The rear side of the inclined plate connecting rod 218 is fixedly connected to the guide inclined plate 219. The rear side of the bottom of the two horizontal L-shaped side plates 215 is fixedly connected to the rear L-shaped push-pull plate 2110. The inner side of the two rear L-shaped push-pull plates 2110 is provided with an electric push rod 2111. The front end of the electric push rod 2111 is fixedly connected to the push-pull horizontal plate 2112. The left and right sides of the front side of the push-pull horizontal plate 2112 are fixedly connected to the triangular abutment 2113. The injection molding frame 22 includes two sets of side plates 221. The top and bottom rear sides of the left and right sets of side plates 221 are fixedly connected to the horizontal bars 222. The middle of the outer side of the two top horizontal bars 222 is fixedly connected to the bottom of the vertical plate 211. The middle of the inner side of the two bottom horizontal bars 222 is fixedly connected to the electric push rod 2111. At the bottom, rectangular side plates 2211 are fixedly connected to the inner sides of both left and right side plates 221. Rectangular frames 223 are fixedly connected to the outer sides of both left and right side plates 221 near the rectangular side plates 2211. Rear closing plate sliders 224 are slidably connected to the rear inner sides of both left and right rectangular frames 223. Rear closing plates 225 are fixedly connected to the outer sides of both left and right rear closing plate sliders 224. Horizontal L-shaped guide plates 226 are fixedly connected to the front outer sides of both left and right rectangular frames 223. Columnar lifting uprights 227 are slidably connected to the inner walls of the outer sides of both left and right horizontal L-shaped guide plates 226. Abutments 228 are fixedly connected to the rear sides of both left and right columnar lifting uprights 227 away from the horizontal L-shaped guide plates 226. The outer sides of each upright post 227 are fixedly connected with inverted L-shaped push-pull side rods 229. The inner ends of the two sets of columnar lifting upright posts 227 on the left and the two sets of columnar lifting upright posts 227 on the right are fixedly connected with mold plates 2210. The inner sides of the two sets of inverted L-shaped push-pull side rods 229 on the left and the two sets of inverted L-shaped push-pull side rods 229 on the right are fixedly connected to the outer sides of the two sets of mold plates 2210. Rectangular side plate guide grooves 2212 are opened on both sides of the middle of the two rectangular side plates 2211. The top and bottom of the front side of the two rectangular side plates 2211 are fixedly connected with hinge blocks 2213. The front side of the two sets of side plates 221 is fixedly connected with inner guide plates 2214. Heating nozzles 2215 are provided on the rear side of the middle of the inner side of the two sets of mold plates 2210.The rear ends of the two heating nozzles 2215 are fixedly connected to the ends of the two material conveying pipes 214 away from the injection material heating chamber 213. The rear sides of the outer walls of the two heating nozzles 2215 are fixedly connected to the inner walls of the outer sides of the two rear L-shaped push-pull plates 2110. The rear sides of the inner middle of the two rectangular side plates 2211 are slidably connected to the left and right sides of the push-pull horizontal plate 2112. The front sides of the outer sides of the two sets of rectangular frames 223 are fixedly connected to the top hinged uprights 2216. The outer sides of the two sets of top hinged uprights 2216 are rotatably connected to Z-shaped rotating rods 2217. The outer sides of the two sets of Z-shaped rotating rods 2217 are rotatably connected to the outer sides of the two sets of Z-shaped rotating rods 2217. Each set of Z-shaped rotating rods 2219 is provided with a Z-shaped rotating rod groove 2219. A vertical Z-shaped abutment 2218 is fixedly connected to the inner side of each of the top and bottom sets of Z-shaped rotating rods 2217, with the rear side of each set of vertical Z-shaped abutments 2218 being chamfered. The rear side of each of the top and bottom sets of vertical Z-shaped abutments 2218 is in contact with the front side of two triangular abutments 2113. One inner wall of the Z-shaped rotating rod groove 2219 provided with the top and bottom sets of Z-shaped rotating rods 2217 is slidably connected to the outer wall of the left and right sets of abutments 228. The front inner walls of the left and right sets of hinge blocks 2213 are rotatably connected to... There is an arc-shaped rotating crossbar 22112. The inner sides of both left and right sets of arc-shaped rotating crossbars 22112 are rotatably connected to bidirectional hinge blocks 22111. The inner sides of both left and right sets of bidirectional hinge blocks 22111 are rotatably connected to push-pull side rods 22110. The outer sides of both left and right sets of push-pull side rods 22110 are slidably connected to the inner sides of both left and right sets of inner guide plates 2214. The outer sides of both left and right sets of arc-shaped rotating crossbars 22112 are rotatably connected to front and rear push-pull side plates 22113. The rear sides of both left and right sets of front and rear push-pull side plates 22113 are fixedly connected to the inner sides of both left and right sets of rear closing plate sliders 224. The two front... A horizontal U-shaped push-pull rod 22114 is fixedly connected to the middle of the inner side of the rear push-pull side plate 22113 and the two front and rear push-pull side plates 22113 on the right. The inner sides of the two sets of horizontal U-shaped push-pull rods 22114 extend to the inner sides of the two rectangular side plates 2211 through the two rectangular side plate guide grooves 2212. The rear sides of the inner sides of the two sets of horizontal U-shaped push-pull rods 22114 are fixedly connected to the top and bottom of the left and right sides of the push-pull horizontal plate 2112. The front sides of the inner sides of the two sets of push-pull side rods 22110 are fixedly connected to the front sides of the outer sides of the two horizontal L-shaped side plates 215. When it is necessary to injection mold the housing of the smart meter, firstly, start the electric push rod 2111 of the equipment. The electric push rod 2111 starts to push the push-pull horizontal plate 2112 to move forward inside the two rectangular side plates 2211. As the triangular block 2113 moves forward, it presses the inclined surface of the vertical Z-shaped block 2218, which drives the Z-shaped rotating rod 2217 to rotate around the top hinged vertical rod 2216. The Z-shaped rotating rod slide groove 2219 presses the block 228, which drives the columnar lifting vertical rod 227 to move inward along the horizontal L-shaped guide plate 226, thereby pushing the left and right sets of mold plates 2210 to move closer to each other to complete the mold closing. Simultaneously, during the rotation of the Z-shaped rotating rod 2217, the forward movement of the push-pull horizontal plate 2112 will drive the horizontal U-shaped push-pull rod 22114 to move forward. The horizontal U-shaped push-pull rod 22114 will drive the front and rear push-pull side plates 22113 to move forward. The front and rear push-pull side plates 22113 will push the arc-shaped rotating horizontal rod 22112 to rotate. The arc-shaped rotating horizontal rod 22112 will drive the push-pull side rod 22110 to move backward through the bidirectional hinge block 22111. The push-pull side rod 22110 will drive the horizontal L-shaped side plate 215 to move backward. The horizontal L-shaped side plate 215 will drive the front closing cover 217 and the guide inclined plate 219 to move backward. The front closing cover 217 will move backward and fit against the front of the two closed mold plates 2210 to seal. After the guide inclined plate 219 moves backward, it will precisely align the injection material feeding channel with the front of the molding cavity formed after the two mold plates 2210 are closed. The side opening is further enhanced by the rearward movement of two horizontal L-shaped side plates 215, which in turn move two rear L-shaped push-pull plates 2110 to the rearward movement and move the heating nozzles 2215 on the inner wall to the rearward movement away from the inner side of the mold plate 2210 that is about to close. When the two mold plates 2210 close, the nozzles are fixed at the notches on the rear inner side of the two mold plates 2210. After the mold is closed, the heated injection material is transported from the injection material heating chamber 213 to the heating nozzles 2215 through the material conveying pipe 214, and then evenly injected into the molding cavity formed by the closure of the two mold plates 2210 to complete the injection feeding. In addition, as the two sets of front and rear push-pull side plates 22113 move forward, they also move the two sets of rear closing plate sliders 224 and heating nozzles 2215 to the front to fit and fix the rear side of the two sets of mold plates 2210 after they are closed. After the injection molding material cools and solidifies, the electric push rod 2111 drives the push-pull horizontal plate 2112 to reset backward, which in turn drives the triangular stop block 2113 to disengage from the vertical Z-shaped stop block 2218. The Z-shaped rotating rod 2217 rotates in the opposite direction, which drives the columnar lifting upright rod 227 and the mold plate 2210 to move outward to open the mold. At the same time, the push-pull horizontal plate 2112 resets backward, which drives the horizontal U-shaped push-pull rod 22114 to move backward, which in turn drives the front and rear push-pull side plates 22113 and the arc-shaped rotating horizontal rod 22112 to move, which drives the push-pull side rod 22110 to move forward, which in turn drives the horizontal L-shaped side plate 215, the front closing cover 217, and the guide inclined plate 219 to move forward to open the front side of the molding cavity. At the same time, the rear L-shaped push-pull plate 2110 drives the heating nozzle 2215 to reset forward, and pushes the already formed smart meter housing forward from the mold cavity through the front side of the heating nozzle 2215. Finally, the formed housing falls out of the mold cavity to complete the material discharge.

[0022] like Figure 10 As shown, the base 1 includes a base plate 11. Guide base plates 12 are fixedly connected to the left and right sides of the top center of the base plate 11. Connecting side plates 13 are fixedly connected to the sides of the top of the two guide base plates 12 that are close to each other. The tops of the two connecting side plates 13 are fixedly connected to the rear side of the outer side of the two bottom side plates 221. Material guide chutes 14 are opened on the left and right sides of the top of the base plate 11. Conveyor belts 15 are fixedly connected to the left and right sides of the bottom of the base plate 11. The middle of the top of the two guide base plates 12 is slidably connected to the bottom of the two material guide chutes 219. After being ejected, the molded housing is guided downwards by two guide ramps 219 and falls along the guide ramp 14 onto the conveyor belt 15 below. The conveyor belt 15 then transports the molded housing to the next processing station, completing the entire injection molding process of the smart meter housing. This device simultaneously performs multiple actions—mold closing, cavity closure, inlet alignment, pre-positioning of the ejector mechanism, and rear mold closing and fixing—through a single push rod action. This greatly simplifies the injection molding process, reduces the configuration of the power mechanism, and improves production efficiency. At the same time, during the mold opening and reset process, the mold opening, opening of the front side of the cavity, ejection of the molded housing, and automatic material feeding are completed simultaneously, realizing an automated process of material feeding upon mold opening, further enhancing the automation level of the smart meter housing injection molding process.

[0023] In addition, the present invention also relates to a method for producing an injection molding apparatus for a smart meter housing, comprising the following steps: Step 1: Process and prepare each component of the injection molding device. According to the assembly requirements, assemble the base plate 11, guide base plate 12, connecting side plate 13, guide chute 14, and conveyor belt 15 into the bottom support conveying mechanism of the device. Then, fix and install the injection material heating chamber 213, side support plate 21, drive mechanism, mold closing and sealing mechanism, and material pushing and discharging mechanism in sequence to complete the assembly and debugging of the entire injection molding device and confirm that each mechanism moves smoothly without jamming. Step 2: Based on the specifications of the smart meter housing to be processed, adjust the mold closing accuracy of the two mold plates 2210, adjust the stroke parameters of the electric push rod 2111, confirm the sealing effect of the front closing cover 217, the rear closing plate 225 and the mold plate 2210 after mold closing, confirm that the feeding channel of the guide plate 219 is aligned with the opening of the molding cavity, adjust the discharge parameters and moving position of the heating nozzle 2215, and complete the equipment debugging before injection molding. Step 3: Add the mixed injection molding raw materials into the injection molding material heating chamber 213, start the heating mechanism to heat and melt the raw materials, and continuously keep the temperature to maintain the molten flow state of the raw materials, waiting for injection molding to start; Step 4: Start the mold closing process of the equipment. The electric push rod 2111 starts to push the push-pull horizontal plate 2112 forward. Through the extrusion transmission of the triangular block 2113, the Z-shaped rotating rod 2217 is driven to rotate, which in turn pushes the columnar lifting upright 227 to move closer to the left and right sets of mold plates 2210 to complete the mold closing. During the synchronous transmission, the push-pull horizontal plate 2112 drives the horizontal U-shaped push-pull rod 22114 to move forward. In sequence, the transmission drives the front closing cover 217 to move backward to close the front side of the mold plate 2210. The guide plate 219 is aligned with the feeding opening of the forming cavity. At the same time, the heating nozzle 2215 is moved to the notch on the rear side of the inner side of the mold plate 2210 and fixed. The rear closing plate 225 moves forward to close the rear side of the mold plate 2210, completing the mold closing, sealing and positioning. Step 5: Open the discharge valve of the injection material heating chamber 213. The molten injection material is transported to the heating nozzle 2215 through the material conveying pipe 214 and evenly injected into the molding cavity formed by the closed mold plate 2210. After the injection feeding is completed, close the discharge valve and keep it still to wait for the injection material to cool and solidify in the molding cavity. Step Six: After the injection molding material has completely cooled and solidified, the mold opening and material discharge process is started. The electric push rod 2111 drives the push-pull horizontal plate 2112 to return to its original position. The triangular stop block 2113 disengages from the vertical Z-shaped stop block 2218. The Z-shaped rotating rod 2217 rotates in the opposite direction, driving the columnar lifting upright rod 227 and the mold plate 2210 to move outward to complete the mold opening. The synchronous transmission drives the horizontal L-shaped side plate 215, the front closing cover 217, and the guide inclined plate 219 to move forward to open the front side of the molding cavity. The rear L-shaped push-pull plate 2110 drives the heating nozzle 2215 to return to its original position. The front side of the heating nozzle 2215 pushes the molded smart meter housing forward to disengage from the mold cavity to complete the material discharge. Step 7: The molded shell, detached from the mold cavity, slides down along the two guide ramps 219 and falls onto the conveyor belt 15 below via the guide chute 14. The conveyor belt 15 transports the molded shell to the next processing station, thus completing the injection molding process of a single batch of smart meter shells. Repeating the above steps allows for continuous batch production.

[0024] Working principle of this invention: When injection molding the housing of a smart meter is required, firstly, the electric push rod 2111 of the equipment is activated. The electric push rod 2111 pushes the push-pull horizontal plate 2112 to move forward inside the two rectangular side plates 2211. As the triangular abutment block 2113 moves forward, it presses the oblique surface of the vertical Z-shaped abutment block 2218, causing the Z-shaped rotating rod 2217 to rotate around the top hinged vertical rod 2216. The Z-shaped rotating rod slide groove 2219, through pressing the abutment block 228, drives the columnar lifting vertical rod 227 to move inward along the horizontal L-shaped guide plate 226, thereby pushing the left and right sets of mold plates 2210 closer together to complete the mold closing. At the same time, during the rotation of the Z-shaped rotating rod 2217, the forward movement of the push-pull horizontal plate 2112 will drive the horizontal U-shaped... The push-pull rod 22114 moves forward, causing the horizontal U-shaped push-pull rod 22114 to drive the front and rear push-pull side plates 22113 to move forward. The front and rear push-pull side plates 22113 push the arc-shaped rotating crossbar 22112 to rotate. The arc-shaped rotating crossbar 22112 drives the push-pull side rod 22110 to move backward through the bidirectional hinge block 22111. The push-pull side rod 22110 drives the horizontal L-shaped side plate 215 to move backward. The horizontal L-shaped side plate 215 drives the front closing cover 217 and the guide plate 219 to move backward. The front closing cover 217 moves backward and fits against the front side of the two closed mold plates 2210 to seal. After the guide plate 219 moves backward, it aligns the injection material feeding channel with the front opening of the molding cavity formed after the two mold plates 2210 are closed. Two horizontal L-shaped side plates 215 move rearward, thereby driving two rear L-shaped push-pull plates 2110 to move rearward and causing the heating nozzles 2215 on the inner wall to move rearward away from the inner side of the mold plate 2210 that is about to close. When the two mold plates 2210 close, the nozzles are fixed at the notches on the rear inner side of the two mold plates 2210. After the mold is closed, the heated injection material is transported from the injection material heating chamber 213 to the heating nozzles 2215 through the material conveying pipe 214, and then evenly injected into the molding cavity formed by the closure of the two mold plates 2210, completing the injection feeding. In addition, while the two sets of front and rear push-pull side plates 22113 move forward, they also drive the two sets of rear closing plate sliders 224 and heating nozzles 2215 to move forward. After the two sets of mold plates 2210 are closed, their rear sides are fitted together to fix them. After the injection molding material cools and solidifies, the electric push rod 2111 drives the push-pull horizontal plate 2112 to return to its original position, which in turn drives the triangular stop block 2113 to disengage from the vertical Z-shaped stop block 2218. The Z-shaped rotating rod 2217 rotates in the opposite direction, driving the columnar lifting upright rod 227 and the mold plate 2210 to move outward to open the mold. At the same time, the push-pull horizontal plate 2112 returns to its original position, which drives the horizontal U-shaped push-pull rod 22114 to move backward, which in turn drives the front and rear push-pull side plates 22113 and the arc-shaped rotating horizontal rod 22112 to move, driving the push-pull side rod 22110 to move forward, which in turn drives the horizontal L-shaped side plate 215, the front closing cover 217, and the guide inclined plate 219 to move forward to open the front side of the molding cavity.Simultaneously, the rear L-shaped push-pull plate 2110 drives the heating nozzle 2215 to reset forward, and the front side of the heating nozzle 2215 pushes the already formed smart meter housing forward and pushes it out of the mold cavity. Finally, the formed housing falls out of the mold cavity to complete the material discharge. After being pushed out, the formed housing is guided downward by two guide plates 219 and falls along the guide chute 14 onto the conveyor belt 15 below. The conveyor belt 15 transports the formed housing to the next processing station, completing the entire injection molding process of the smart meter housing.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for a smart meter housing, comprising a base (1), characterized in that: A molding mechanism (2) is fixedly connected to the top of the base (1); The molding mechanism (2) includes a closing frame (21), and an injection molding assembly frame (22) is provided on the inner side of the closing frame (21). The closed frame (21) includes a vertical plate (211), a top plate (212) is fixedly connected to the top of the vertical plate (211), an injection molding material heating chamber (213) is fixedly connected to the top of the top plate (212), and material conveying pipes (214) are fixedly connected to both the left and right sides of the injection molding material heating chamber (213).

2. The injection molding apparatus for a smart meter housing according to claim 1, characterized in that: The top plate (212) has horizontal L-shaped side plates (215) slidably connected to the left and right sides of the bottom front side. The bottom of the outer front side of the two horizontal L-shaped side plates (215) is fixedly connected to a horizontal push-pull plate (216). The bottom outer side of the two horizontal push-pull plates (216) is fixedly connected to a guide plate connecting rod (218). The rear outer side of the two horizontal push-pull plates (216) is fixedly connected to a front closing cover (217). The two guide plate connecting rods (218) The rear side of each of the two horizontal L-shaped side plates (215) is fixedly connected with a guide plate (219). The rear side of the bottom of each of the two horizontal L-shaped side plates (215) is fixedly connected with a rear L-shaped push-pull plate (2110). The inner side of the two rear L-shaped push-pull plates (2110) is provided with an electric push rod (2111). The front end of the electric push rod (2111) is fixedly connected with a push-pull horizontal plate (2112). The left and right sides of the front side of the push-pull horizontal plate (2112) are fixedly connected with triangular blocks (2113).

3. The injection molding apparatus for a smart meter housing according to claim 1, characterized in that: The injection molding frame (22) includes two sets of side plates (221). The top and bottom rear sides of the left and right sets of side plates (221) are fixedly connected with crossbars (222). The middle of the outer side of the two top crossbars (222) is fixedly connected to the bottom of the upright plate (211). The middle of the inner side of the two bottom crossbars (222) is fixedly connected to the bottom of the electric push rod (2111). The inner side of the left and right sets of side plates (221) is fixedly connected with rectangular side plates (2211). The outer side of the left and right sets of side plates (221) near the rectangular side plates (2211) is fixedly connected with rectangular frames (223). The rear side of the inner side of the left and right sets of rectangular frames (223) is slidably connected with rear closing plate sliders (224). The outer side of the left and right sets of rear closing plate sliders (224) is fixedly connected with rear closing plates (225).

4. The injection molding device for a smart meter housing according to claim 3, characterized in that: Both sides of the rectangular frames (223) are fixedly connected to the front side of the outer side of the two sets of rectangular frames (223). Both sides of the inner wall of the outer side of the two sets of rectangular frames (226) are slidably connected to columnar lifting rods (227). Both sides of the rear side of the columnar lifting rods (227) away from the horizontal L-shaped guide plate (226) are fixedly connected to a stop block (228). Both sides of the outer side of the columnar lifting rods (227) are fixedly connected to inverted L-shaped push-pull side rods (229). The two sets of columnar lifting rods on the left side... 227) The inner ends of the two sets of columnar lifting poles (227) on the right are all fixedly connected to mold plates (2210). The inner sides of the two sets of inverted L-shaped push-pull side rods (229) on the left and the two sets of inverted L-shaped push-pull side rods (229) on the right are all fixedly connected to the outer sides of the two sets of mold plates (2210). The two rectangular side plates (2211) are provided with rectangular side plate guide grooves (2212) on both sides of the middle part. The top and bottom of the front side of the two rectangular side plates (2211) are fixedly connected to hinge blocks (2213).

5. The injection molding apparatus for a smart meter housing according to claim 4, characterized in that: The front sides of the left and right sets of side plates (221) are fixedly connected to inner guide plates (2214). The rear sides of the inner middle of the left and right sets of mold plates (2210) are provided with heating nozzles (2215). The rear ends of the two heating nozzles (2215) are fixedly connected to the end of the two material conveying pipes (214) away from the injection material heating chamber (213). The rear sides of the outer walls of the two heating nozzles (2215) are fixedly connected to the inner walls of the outer sides of the two rear L-shaped push-pull plates (2110). The rear sides of the inner middle of the two rectangular side plates (2211) are slidably connected to the left and right sides of the push-pull horizontal plate (2112). The front sides of the outer sides of the left and right sets of rectangular frames (223) are fixedly connected to top hinged uprights (2216).

6. The injection molding apparatus for a smart meter housing according to claim 5, characterized in that: Both the left and right sets of top hinged uprights (2216) are rotatably connected to Z-shaped rotating rods (2217) on their outer sides. Both the left and right sets of Z-shaped rotating rods (2217) are provided with Z-shaped rotating rod grooves (2219) on their outer sides. Both the top and bottom sets of Z-shaped rotating rods (2217) are fixedly connected to upright Z-shaped blocks (2218) on their inner sides that are close to each other. Both the top and bottom sets of upright Z-shaped blocks (2218) are chamfered on their rear sides that are close to each other. Both the top and bottom sets of upright Z-shaped blocks (2218) are in contact with the front sides of two triangular blocks (2113) on their rear sides. Both the top and bottom sets of upright Z-shaped blocks (2218) are slidably connected to the outer walls of the left and right sets of blocks (228) on one side of the inner wall of the Z-shaped rotating rod grooves (2219) provided by the top and bottom sets of Z-shaped rotating rods (2217).

7. The injection molding apparatus for a smart meter housing according to claim 4, characterized in that: The front inner walls of the left and right sets of hinge blocks (2213) are rotatably connected to arc-shaped rotating crossbars (22112). The inner sides of the left and right sets of arc-shaped rotating crossbars (22112) are rotatably connected to bidirectional hinge blocks (22111). The inner sides of the left and right sets of bidirectional hinge blocks (22111) are rotatably connected to push-pull side rods (22110). The outer sides of the left and right sets of push-pull side rods (22110) are slidably connected to the inner sides of the left and right sets of inner guide plates (2214). The outer sides of the left and right sets of arc-shaped rotating crossbars (22112) are rotatably connected to front and rear push-pull side plates (22113). The rear sides of the left and right sets of front and rear push-pull side plates (22113) are fixedly connected to the inner sides of the left and right sets of rear closing plate sliders (224).

8. The injection molding apparatus for a smart meter housing according to claim 7, characterized in that: The two front and rear push-pull side plates (22113) on the left and the two front and rear push-pull side plates (22113) on the right are all fixedly connected to the middle of the inner side of the horizontal U-shaped push-pull rods (22114). The inner sides of the two sets of horizontal U-shaped push-pull rods (22114) extend to the inner side of the two rectangular side plates (2211) through the two rectangular side plate guide grooves (2212) opened on the two rectangular side plates (2211). The rear side of the inner side of the two sets of horizontal U-shaped push-pull rods (22114) is fixedly connected to the top and bottom of the left and right sides of the push-pull horizontal plate (2112). The front side of the inner side of the two sets of push-pull side rods (22110) is fixedly connected to the two sides of the front side of the outer side of the two horizontal L-shaped side plates (215).

9. The injection molding apparatus for a smart meter housing according to claim 1, characterized in that: The base (1) includes a base plate (11). Guide base plates (12) are fixedly connected to the left and right sides of the top center of the base plate (11). Connecting side plates (13) are fixedly connected to the sides of the top of the two guide base plates (12) that are close to each other. The top of the two connecting side plates (13) is fixedly connected to the rear side of the two bottom side plates (221). Guide chute (14) is provided on the left and right sides of the top of the base plate (11). Conveyor belts (15) are fixedly connected to the left and right sides of the bottom of the base plate (11). The middle of the top of the two guide base plates (12) is slidably connected to the bottom of the two guide chute (219).

10. A method for producing an injection molding apparatus for a smart meter housing, wherein the injection molding apparatus for a smart meter housing according to any one of claims 1-9 is characterized in that: Includes the following steps: Step 1: Process and prepare each component of the injection molding device. According to the assembly requirements, assemble the bottom plate (11), guide bottom plate (12), connecting side plate (13), guide chute (14), and conveyor belt (15) into the bottom support conveying mechanism of the device. Then, fix and install the injection material heating chamber (213), side support upright plate (21), drive mechanism, mold closing and sealing mechanism, and material pushing and discharging mechanism in sequence to complete the assembly and debugging of the entire injection molding device and confirm that the operation of each mechanism is smooth and without jamming. Step 2: Based on the specifications of the smart meter housing to be processed, adjust the mold closing accuracy of the two mold plates (2210), adjust the stroke parameters of the electric push rod (2111), confirm the sealing effect of the front closing cover (217), the rear closing plate (225) and the mold plate (2210) after mold closing, confirm that the feeding channel of the guide plate (219) is aligned with the opening position of the molding cavity, adjust the discharge parameters and moving position of the heating nozzle (2215), and complete the equipment debugging before injection molding; Step 3: Add the mixed injection molding raw materials into the injection molding material heating chamber (213), start the heating mechanism to heat and melt the raw materials, and continuously keep the temperature to maintain the molten flow state of the raw materials, waiting for injection molding to start; Step 4: Start the mold closing process of the equipment. The electric push rod (2111) starts to push the push-pull horizontal plate (2112) forward. Through the extrusion transmission of the triangular block (2113), the Z-shaped rotating rod (2217) is driven to rotate, which in turn pushes the columnar lifting upright (227) and the left and right sets of mold plates (2210) to approach each other to complete the mold closing. During the synchronous transmission process, the push-pull horizontal plate (2112) drives the horizontal U-shaped push-pull rod (22114) to move forward. In sequence, the transmission drives the front closing cover (217) to move backward to close the front side of the mold plate (2210). The guide plate (219) is aligned with the feeding opening of the forming cavity. At the same time, the heating nozzle (2215) is moved to the notch on the inner rear side of the mold plate (2210) and fixed. The rear closing plate (225) moves forward to close the rear side of the mold plate (2210) to complete the mold closing and sealing positioning. Step 5: Open the discharge valve of the injection material heating chamber (213), and the molten injection material is transported to the heating nozzle (2215) through the material conveying pipe (214) and evenly injected into the molding cavity formed by the closed mold plate (2210). After the injection material feeding is completed, close the discharge valve and keep it still to wait for the injection material to cool and solidify in the molding cavity. Step 6: After the injection molding material has completely cooled and solidified, start the mold opening and material discharge process. The electric push rod (2111) drives the push-pull horizontal plate (2112) to return to its original position. The triangular block (2113) disengages from the vertical Z-shaped block (2218). The Z-shaped rotating rod (2217) rotates in the opposite direction, driving the columnar lifting upright (227) and mold plate (2210) to move outward to complete the mold opening. The synchronous transmission drives the horizontal L-shaped side plate (215), the front closing cover (217), and the guide inclined plate (219) to move forward to open the front side of the molding cavity. The rear L-shaped push-pull plate (2110) drives the heating nozzle (2215) to return to its original position. The front side of the heating nozzle (2215) pushes the molded smart meter housing forward to disengage from the mold cavity to complete the material discharge. Step 7: The molded shell, detached from the mold cavity, slides down along the two guide sloping plates (219) and falls onto the conveyor belt (15) below through the guide sloping groove (14). The conveyor belt (15) transports the molded shell to the next processing station, thus completing the injection molding process of a single batch of smart meter shells. Repeating the above steps will enable continuous batch production.

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