Photovoltaic junction box body forming mold

Abstract

The utility model discloses a photovoltaic junction box box body forming die, concretely relates to junction box forming die technical field, including base, be provided with forming assembly on the base, the forming assembly includes the top plate of setting at the top of base, the top of top plate is provided with the shunt plate. The utility model discloses through the collaborative design of multiple shunt mouth and multiple forming cavities, the several shunt mouths of top die plate and the several forming cavities of lower die plate correspond, and after injection material is guided by the shunt plate, can be filled to all forming cavities through the shunt mouth synchronization, realizes the forming processing of multiple photovoltaic junction box box body of single injection molding, and adapts the batch assembly line mode of photovoltaic module, and the production cycle of single batch product is reduced greatly, and the overall production efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of junction box molding technology, and more specifically, to a photovoltaic junction box body molding mold. Background Technology

[0002] A photovoltaic junction box is a core electrical component that connects photovoltaic modules (such as solar panels) to external circuits. Its main functions are to collect the direct current generated by the solar panels, protect the circuit from overcurrent / overvoltage damage, and provide a safe wiring interface. It is a key node in a photovoltaic system to achieve both "power output" and "safety protection".

[0003] Among them, patent CN209454080U discloses a molding die for a junction box, including an upper cover plate, a lower cover plate, a cavity disposed between the upper cover plate and the lower cover plate, a set of cores disposed in the cavity, and a sliding core-pulling system disposed on both sides of the cavity; the set of cores are respectively symmetrically disposed on both sides of the cavity and connected to the sliding core-pulling system, and are pulled out from the side by the sliding core-pulling system; the upper cover plate is provided with a point gate, the back of the upper cover plate is provided with a pouring channel, the point gate is connected to the pouring channel, the cavity is provided with a pouring hole, and the melt in the point gate enters the cavity through the pouring channel and the pouring hole; When in use, this structure solves the problem of damage to the inner wall of the product by adopting an internal core pulling and point gate design and realizes automated shearing gate production. However, the production of photovoltaic modules is a "mass production line mode", and the molding mold is difficult to produce multiple junction box components in one injection, resulting in low molding efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a photovoltaic junction box molding mold, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a photovoltaic junction box molding mold, including a base, on which a molding component is provided; The molding assembly includes a top plate disposed on the top of the base, and a flow divider is disposed at the top of the top plate; An upper template is provided between the top plate and the diversion plate. Several diversion ports for guiding flow are provided through the upper template. A lower template is provided at the bottom of the upper template. The lower template is embedded in the top plate and has several forming cavities. The multiple forming cavities are respectively located at the bottom of the corresponding diversion ports.

[0006] Optionally, in a possible implementation, a pressure plate is provided on the top of the diversion plate, and a feed valve is provided between the diversion plate and the pressure plate. The top end of the feed valve extends to the pressure plate, and the bottom end of the feed valve extends to the diversion plate. A plurality of hydraulic rods are provided on the top of the top plate, and each hydraulic rod has a push rod at its output end. The push rod passes through the diversion plate and extends to the bottom of the pressure plate. A plurality of water guide pipes are provided on both sides of the upper template, and each water guide pipe is connected to the upper template. A horizontal plate is provided in the middle of the base, and a plurality of electric push rods are provided on the horizontal plate. Each of the electric push rods has a push rod at its output end, and the top end of each push rod passes through the top plate and the lower template and extends to the bottom of the inner wall of the corresponding lower template. The technical effects and advantages of this utility model are as follows: Through the collaborative design of multiple flow outlets and multiple molding cavities, the several flow outlets opened on the upper mold plate correspond to the several molding cavities of the lower mold plate. After the injection molding raw material is guided by the flow distribution plate, it can be simultaneously filled into all molding cavities through the flow outlets, so that multiple photovoltaic junction box bodies can be molded in a single injection. This is suitable for the batch production line mode of photovoltaic modules, greatly reduces the production cycle of a single batch of products, and significantly improves the overall production efficiency. The raw material fed by the feed valve first enters the internal channel of the flow divider plate. After being buffered and distributed by the flow divider plate, it then flows precisely into the molding cavity through the evenly distributed flow outlets on the upper template. This process avoids problems such as uneven filling speed and inconsistent pressure caused by differences in the flow path of the raw material, ensuring that the amount and density of raw material in each molding cavity are the same. As a result, the photovoltaic junction box bodies produced are highly consistent in dimensional accuracy and structural strength, reducing the risk of subsequent assembly failures due to product differences. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0008] Figure 1 This is a front view of the overall structure of this utility model.

[0009] Figure 2 This is a schematic diagram of the flow divider, feed valve, and pressure plate of this utility model.

[0010] Figure 3 This is a schematic diagram of the hydraulic rod, top plate, base, water guide pipe and upper template of this utility model.

[0011] Figure 4 This is a schematic diagram of the upper template, diversion port, water guide pipe, base, top plate, lower template and forming cavity of this utility model.

[0012] The attached diagram is labeled as follows: 1. Base; 2. Top plate; 3. Diverter plate; 4. Pressure plate; 5. Hydraulic rod; 6. Feed valve; 7. Upper template; 8. Diverter port; 9. Lower template; 10. Forming cavity; 11. Water guide pipe; 12. Horizontal plate; 13. Electric push rod. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] This embodiment discloses a photovoltaic junction box molding die, which aims to solve the problems in the prior art where photovoltaic junction box molding dies are difficult to adapt to mass production lines and multiple parts cannot be manufactured in one injection molding, resulting in low molding efficiency. Through multi-chamber synchronous molding and efficient flow guidance design, the production efficiency and product consistency of photovoltaic junction box bodies are significantly improved.

[0015] Specifically, such as Figure 1 As shown, the photovoltaic junction box molding mold includes a base 1, which serves as the supporting foundation for the entire mold and provides a stable mounting platform for all components above. A core molding component is integrated on the base 1. This component is a key structure for achieving the injection molding of the box body. It includes a top plate 2 positioned on top of the base 1. The top plate 2 has a horizontal plate-like structure, which not only connects the base 1 to the components above but also provides space for the embedded installation of the lower mold plate 9. A flow divider 3 is fixedly installed at the top of the top plate 2. The flow divider 3 has a hidden flow channel inside, which can evenly distribute the injection molding material to the subsequent structures.

[0016] like Figure 4As shown, an upper template 7 is tightly fitted between the top plate 2 and the flow divider 3. The upper template 7 is made of a high-temperature resistant alloy material to withstand the high-temperature environment during injection molding. Several flow dividers 8 are formed through the upper template 7 for guiding flow. These flow dividers 8 are evenly distributed in an array, and the inner diameter of each flow divider 8 matches the flow characteristics of the injection molding material, preventing blockages or uneven flow rates during the material flow process. A lower template 9 is detachably connected to the bottom of the upper template 7. The lower template 9 is fully embedded in a pre-set groove in the top plate 2, with the embedding depth ensuring that the top of the lower template 9 is completely flush with the bottom of the upper template 7, effectively preventing material leakage during injection molding. Several molding cavities 10 are formed on the lower template 9 corresponding to the flow dividers 8. The inner wall contour of each molding cavity 10 is completely consistent with the shape of the photovoltaic junction box body, and the multiple molding cavities 10 are located directly below the corresponding flow dividers 8, ensuring that the material flowing out of the flow dividers 8 can directly and quickly fill the molding cavity 10.

[0017] like Figure 2 As shown, a pressure plate 4 is fixed to the top of the manifold 3 by bolts. The area of ​​the pressure plate 4 is the same as the top surface area of ​​the manifold 3, which can seal and protect the top of the manifold 3. A feed valve 6 is installed between the manifold 3 and the pressure plate 4. The top of the feed valve 6 passes through the pressure plate 4 and extends above the pressure plate 4, which facilitates connection with the discharge pipe of the external injection molding machine. Its bottom extends into the guide channel inside the manifold 3 to achieve precise delivery of injection molding raw materials. By controlling the opening and closing state and degree of opening of the feed valve 6, the feeding speed and feeding amount of the raw materials can be flexibly adjusted.

[0018] like Figure 3 As shown, several hydraulic rods 5 are symmetrically arranged on the top of the top plate 2. These hydraulic rods 5 are located at the four corners of the top plate 2, and each hydraulic rod 5 has a push rod vertically upward at its output end. The diameter of the push rod is slightly smaller than the diameter of the output end of the hydraulic rod 5, and the end of the push rod away from the hydraulic rod 5 passes through a pre-set through hole on the manifold 3 and extends to the bottom of the pressure plate 4. When it is necessary to fine-tune the position of the pressure plate 4 or to open and close the mold, the hydraulic rod 5 is activated, and its output end drives the push rod to move up and down. The push rod can then push the pressure plate 4 to move synchronously, thereby controlling the tightness of the fit between the manifold 3 and the upper mold plate 7, ensuring the sealing during the injection molding process.

[0019] like Figure 3As shown, several water guide pipes 11 are provided on both sides of the upper mold plate 7. These water guide pipes 11 are connected to the cooling water channels opened inside the upper mold plate 7. One end of the water guide pipe 11 can be connected to an external cold water circulation system, and the other end serves as a return port for the cooling water. After injection molding, cooling water is introduced into the cooling water channels of the upper mold plate 7 through the water guide pipes 11. The cooling water can quickly absorb the heat transferred between the upper mold plate 7 and the lower mold plate 9, accelerate the cooling and solidification of the raw material in the molding cavity 10, shorten the product molding cycle, and at the same time avoid quality problems such as deformation and cracking of the box due to uneven cooling.

[0020] like Figure 1 As shown, a horizontal plate 12 is fixed in the middle of the base 1. Several electric push rods 13 are arranged on the horizontal plate 12 at positions corresponding to the molding cavity 10. Each electric push rod 13 has a vertically upward-pointing ejector rod at its output end. The top of the ejector rod passes through the through holes on the top plate 2 and the lower template 9, and extends to the bottom of the inner wall of the corresponding lower template 9. The top of the ejector rod is flush with the bottom of the inner wall of the lower template 9, so as not to affect the normal molding of the raw material in the molding cavity 10. After the box body cools and forms in the molding cavity 10, the electric push rod 13 is activated. Its output end drives the ejector rod to move upward, and the ejector rod can push the formed box body out of the molding cavity 10, realizing automatic demolding of the product without manual material handling, further adapting to the needs of mass production on the assembly line. The specific working principle is as follows: During the production of photovoltaic junction box bodies, firstly, the discharge pipe of the external injection molding machine is connected to the feed valve 6. The hydraulic rod 5 is activated, causing the push rod to move the pressure plate 4 downwards, ensuring a tight fit between the manifold 3, upper mold plate 7, and lower mold plate 9. Next, the feed valve 6 is opened, and the injection molding machine delivers molten raw material to the guide channel of the manifold 3. After being evenly distributed through the guide channel, the raw material flows synchronously into the corresponding molding cavities 10 through several manifold ports 8 on the upper mold plate 7 until all molding cavities 10 are filled with raw material. Then, the feed valve 6 is closed, and cooling water is introduced through the water pipes 11 on both sides of the upper mold plate 7 to cool the raw material in the molding cavities 10. Once the raw material has completely solidified to form the box body, the cooling water supply is stopped. Finally, the electric push rod 13 on the horizontal plate 12 is activated, and the push rod moves upwards, synchronously ejecting each molded box body from the molding cavity 10, completing one batch production process. Repeating the above steps allows for continuous, batch injection molding production of photovoltaic junction box bodies.

[0021] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A photovoltaic junction box molding mold, including a base (1), characterized in that: A molding component is provided on the base (1); The molding assembly includes a top plate (2) disposed on the top of the base (1), and a diversion plate (3) is disposed on the top of the top plate (2). An upper template (7) is provided between the top plate (2) and the diversion plate (3). Several diversion ports (8) for guiding flow are provided through the upper template (7). A lower template (9) is provided at the bottom of the upper template (7). The lower template (9) is embedded in the top plate (2), and several forming cavities (10) are provided on the lower template (9). The multiple forming cavities (10) are located at the bottom of the corresponding diversion ports (8).

2. The photovoltaic junction box molding mold according to claim 1, characterized in that: A pressure plate (4) is provided on the top of the flow divider (3), and a feed valve (6) is provided between the flow divider (3) and the pressure plate (4). The top end of the feed valve (6) extends to the pressure plate (4), and the bottom end of the feed valve (6) extends to the flow divider (3).

3. The photovoltaic junction box molding mold according to claim 1, characterized in that: The top plate (2) is provided with a number of hydraulic rods (5), and each hydraulic rod (5) has a push rod at its output end, and the push rod passes through the diversion plate (3) and extends to the bottom of the pressure plate (4).

4. The photovoltaic junction box molding mold according to claim 1, characterized in that: Several water pipes (11) are provided on both sides of the upper template (7), and each water pipe (11) is connected to the upper template (7).

5. The photovoltaic junction box molding mold according to claim 1, characterized in that: A horizontal plate (12) is provided in the middle of the base (1), and a number of electric push rods (13) are provided on the horizontal plate (12).

6. The photovoltaic junction box molding mold according to claim 5, characterized in that: Each of the multiple electric push rods (13) has a top material rod at its output end, and the top of each top material rod penetrates the top plate (2) and the lower template (9) and extends to the bottom of the inner wall of the corresponding lower template (9).

Images