Injection molding mold of cable junction box

Abstract

The utility model discloses an injection molding mold of a cable junction box, which comprises a fixed mold, a support plate and a movable mold, the top of the fixed mold is provided with a molding groove, and the bottom of the movable mold is integrally molded with a molding block; a positioning through hole is formed in an inner cavity of the movable mold, a circular groove is formed in the top of the positioning through hole, a flow guide pipe is inserted into the positioning through hole, an injection molding pipe is in threaded connection with the interior of the circular groove, and the top of the flow guide pipe is connected to the bottom of the injection molding pipe. Due to the fact that the flow guide pipe is designed to be detachable, when unsmooth discharging occurs in the flow guide pipe, the flow guide pipe can be taken down from the movable mold to be cleaned, through the mode, overall cleaning of the flow guide pipe can be achieved, limitation of the operation space is avoided, smoothness of the flow guide pipe can be guaranteed faster and better, and normal use of the injection molding mold is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology for junction boxes, specifically to an injection molding mold for a cable junction box. Background Technology

[0002] A cable junction box is a device used in electrical wiring systems. It primarily connects electrical conduits to electrical equipment or components, enabling a smooth transition between exposed and concealed wiring and flexible conversion between rigid and flexible conduits. Junction boxes protect and connect wires at the connection point between the conduit and the box, facilitating wire threading, branching, and transition connections. They are commonly used for wiring and branching in conduits, lighting fixtures, and other applications.

[0003] One of the common production methods for cable junction boxes is injection molding. Injection molding requires the use of injection molds, which are usually equipped with injection ports to facilitate the entry of plastic material.

[0004] As mentioned in the Chinese patent application CN202322464107.9 for a junction box injection mold: "The moving mold has an injection hole inside, which is used to discharge the injection molding material of the refrigerator junction box. The finished refrigerator junction box will be formed between the fixed mold and the moving mold."

[0005] Through a search of the aforementioned patented technologies, we found that after injecting plastic into the mold cavity of the fixed mold through the injection hole, a certain amount of plastic will remain in the injection hole or at the bottom outlet. Over time, the injection hole may become blocked due to the accumulation and solidification of the plastic, thus affecting the normal feeding of the injection hole. Although tools can be used to clean the injection hole, the limited operating space and the depth of the injection hole make cleaning inconvenient and incomplete, making it difficult to ensure the normal feeding of the injection hole. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an injection molding mold for a cable junction box, comprising a fixed mold, a support plate, and a moving mold. The top of the fixed mold has a molding groove, and the bottom of the moving mold has an integrally formed molding block. A positioning through hole is provided in the inner cavity of the moving mold, and a circular groove is provided at the top of the positioning through hole. A guide tube is inserted into the positioning through hole, and an injection tube is threaded into the circular groove. The top of the guide tube is connected to the bottom of the injection tube. An opening is provided on one side of the fixed mold, and a fixing rod is fixed on the inner wall of the opening. A cleaning scraper is fixed at one end of the fixing rod.

[0008] As a further embodiment of this utility model: a docking ring is fixed at the top of the guide tube, a docking groove is provided at the bottom of the injection tube, a rubber ring is fixed on the inner top wall of the docking groove, and the docking ring is threadedly connected in the docking groove.

[0009] As a further embodiment of this utility model: the inner diameter of the guide tube is the same as the inner diameter of the injection molding tube and they are interconnected; the inner wall of the guide tube has a smooth mirror surface structure; the bottom of the guide tube is at the same horizontal line as the bottom of the molding block; and the bottom of the guide tube is connected to the molding groove.

[0010] As a further embodiment of this utility model: a positioning ring is fixed on the injection tube, and after the injection tube is threaded into the circular groove, the bottom of the positioning ring is tightly fitted with the top of the moving mold.

[0011] As a further embodiment of this utility model: the opening is arc-shaped, the length of the fixing rod is longer than the length of the guide tube, the cleaning scraper is circular, and the diameter of the cleaning scraper is adapted to the inner diameter of the guide tube.

[0012] As a further embodiment of this utility model: limit rods are fixed at the top four corners of the fixed mold, and a support plate is fixed between the tops of the four limit rods. The four corners of the moving mold are respectively movably sleeved with the four limit rods.

[0013] As a further embodiment of this utility model: a cylinder is installed on the top of the support plate, and the power output shaft of the cylinder moves through the support plate and is fixed at the top center of the moving mold.

[0014] As a further embodiment of this utility model: the size of the molding block is adapted to the size of the molding groove, and a gap for forming cable junction boxes is provided between the molding block and the molding groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this application, the designed injection tube, positioning through hole, and guide tube structure enable effective delivery of injection plastic through the guide tube. Since the guide tube adopts a detachable design, when the discharge inside the guide tube is obstructed, the guide tube can be removed from the moving mold for cleaning. This method can achieve overall cleaning of the guide tube without being limited by the operating space, and can ensure the smoothness of the guide tube more quickly and better, ensuring the normal use of the injection molding mold. In addition, the designed cleaning scraper can scrape the inside of the guide tube to ensure the smoothness of the inside of the guide tube, which is conducive to the flow of injection plastic. Attached Figure Description

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

[0018] Figure 2 This is a cross-sectional view of the front of this utility model;

[0019] Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A in the diagram;

[0020] Figure 4 This is a three-dimensional structural diagram of the guide tube and injection molding tube after separation of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the cleaning scraper of this utility model;

[0022] Figure 6 This is a cross-sectional view of the guide tube of this utility model during cleaning on a cleaning scraper.

[0023] The reference numerals and names in the figure are as follows:

[0024] 1. Fixed mold; 2. Support plate; 3. Moving mold; 301. Molding block; 4. Limiting rod; 5. Cylinder; 6. Injection tube; 601. Positioning ring; 602. Docking groove; 7. Opening; 8. Molding groove; 9. Positioning through hole; 10. Guide tube; 11. Docking ring; 12. Circular groove; 13. Rubber ring; 14. Fixing rod; 1401. Cleaning scraper. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0026] Please see Figure 1-6 An injection molding mold for a cable junction box includes a fixed mold 1, a support plate 2, and a moving mold 3. The top of the fixed mold 1 is provided with a molding groove 8, and the bottom of the moving mold 3 is integrally formed with a molding block 301. A positioning through hole 9 is provided in the inner cavity of the moving mold 3, and a circular groove 12 is provided at the top of the positioning through hole 9. A guide tube 10 is inserted into the positioning through hole 9, and an injection tube 6 is threaded into the circular groove 12. The top of the guide tube 10 is connected to the bottom of the injection tube 6. An opening 7 is provided on one side of the fixed mold 1, and a fixing rod 14 is fixed on the inner wall of the opening 7. A cleaning scraper 1401 is fixed at one end of the fixing rod 14.

[0027] Please see Figure 1 , Figure 3 and Figure 4In this embodiment, a docking ring 11 is fixed at the top of the guide tube 10, and a docking groove 602 is provided at the bottom of the injection tube 6. A rubber ring 13 is fixed on the inner top wall of the docking groove 602, and the docking ring 11 is threadedly connected in the docking groove 602.

[0028] Specifically, the docking ring 11 is circular, and the docking groove 602 is also circular. The docking ring 11 can be screwed into the docking groove 602 to ensure the stable connection between the guide tube 10 and the injection tube 6. The docking groove 602 is also equipped with a rubber ring 13, which can improve the sealing after screwing in and provide a certain amount of damping when screwing in, thereby improving the stability after screwing in.

[0029] Please see Figure 2 and Figure 3 In this embodiment, the inner diameter of the guide tube 10 is the same as the inner diameter of the injection molding tube 6 and they are interconnected. The inner wall of the guide tube 10 is a smooth mirror structure. The bottom of the guide tube 10 is at the same horizontal line as the bottom of the molding block 301, and the bottom of the guide tube 10 is connected to the molding groove 8.

[0030] Specifically, the inner diameter of the guide tube 10 is the same as that of the injection tube 6, which ensures the smooth flow of the injection plastic and avoids obstruction or slowing down of the flow rate due to the difference in inner diameter. At the same time, the inside of the guide tube 10 is a smooth surface, which can improve the smoothness of the injection plastic and minimize the possibility of the injection plastic adhering, thereby reducing the number of times disassembly and cleaning are required.

[0031] Please see Figure 3 and Figure 4 In this embodiment, a positioning ring 601 is fixed on the injection tube 6. After the injection tube 6 is threaded into the circular groove 12, the bottom of the positioning ring 601 fits tightly against the top of the moving mold 3.

[0032] Specifically, the positioning ring 601 can provide feedback on the screwing distance of the injection tube 6. When the positioning ring 601 is tightly fitted with the top of the moving mold 3, the surface injection tube 6 is tightened at this point, ensuring stability.

[0033] Please see Figure 2 , Figure 5 and Figure 6 In this embodiment, the opening 7 is arc-shaped, the length of the fixing rod 14 is longer than the length of the guide tube 10, the cleaning scraper 1401 is circular, and the diameter of the cleaning scraper 1401 is adapted to the inner diameter of the guide tube 10.

[0034] Specifically, the arc-shaped opening 7 facilitates the insertion of the guide tube 10 and limits and guides the guide tube 10, ensuring the stability of the guide tube 10 during sliding. The cleaning scraper 1401 is circular and can be inserted well into the interior of the guide tube 10. The cleaning scraper 1401 is used to scrape the interior of the guide tube 10, making it easy to clean the residual material inside the guide tube 10. By scraping the interior of the guide tube 10 with the cleaning scraper 1401, and with the length of the fixing rod 14 being longer than the length of the guide tube 10, it can be ensured that the entire interior of the guide tube 10 can be cleaned.

[0035] Please see Figure 1 and Figure 2 In this embodiment, limit rods 4 are fixed at the top four corners of the fixed mold 1, and a support plate 2 is fixed between the tops of the four limit rods 4. The four corners of the moving mold 3 are respectively movably sleeved with the four limit rods 4. A cylinder 5 is installed on the top of the support plate 2. The power output shaft of the cylinder 5 moves through the support plate 2 and is fixed at the top center of the moving mold 3. The size of the forming block 301 is adapted to the size of the forming groove 8, and a gap for forming the cable junction box is provided between the forming block 301 and the forming groove 8.

[0036] Specifically, the moving mold 3 moves up or down by starting the cylinder 5. When the moving mold 3 moves down, it can drive the molding block 301 into the molding groove 8, which facilitates the injection molding of the cable junction box. When the moving mold 3 moves up, it can drive the molding block 301 away from the molding groove 8, which can remove the cable junction box molded inside the molding groove 8. When the moving mold 3 is moving, it can obtain the limiting effect of the four limiting rods 4 to maintain the stability during the movement, which is conducive to the stable placement of the molding block 301 into the molding groove 8.

[0037] When using:

[0038] The injection tube 6 can be used to transport the injection plastic inside the guide tube 10. The injection plastic comes into the gap between the molding block 301 and the molding groove 8 and is formed into a cable junction box.

[0039] When the guide tube 10 needs to be cleaned after long-term use, the staff can directly twist the injection tube 6, the injection tube 6 will be twisted out of the circular groove 12, and the guide tube 10 can be moved upward from the positioning through hole 9 and pulled out from the positioning through hole 9. Then the guide tube 10 can be twisted to separate the guide tube 10 from the bottom of the injection tube 6.

[0040] Workers can clean the injection tube 6 and the guide tube 10 separately. Since the guide tube 10 has a certain depth, workers can insert the guide tube 10 into the opening 7 and place the cleaning scraper 1401 into the inside of the guide tube 10. Then, push the guide tube 10 so that the cleaning scraper 1401 scrapes the inner wall of the guide tube 10, thereby removing the residual material adhering to the inner wall of the guide tube 10 and ensuring the smoothness of the inner wall of the guide tube 10.

[0041] After the injection tube 6 and the guide tube 10 are cleaned, the staff can screw the guide tube 10 back into the bottom of the injection tube 6 and insert the guide tube 10 into the positioning through hole 9 from the circular groove 12. Finally, the injection tube 6 is tightened in the circular groove 12 for convenient continued use.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An injection molding mold for a cable junction box, comprising a fixed mold (1), a support plate (2), and a moving mold (3), characterized in that, The top of the fixed mold (1) is provided with a forming groove (8), and the bottom of the moving mold (3) is integrally formed with a forming block (301); The moving mold (3) has a positioning through hole (9) in its inner cavity. A circular groove (12) is provided at the top of the positioning through hole (9). A guide tube (10) is inserted into the positioning through hole (9). An injection tube (6) is threaded into the circular groove (12). The top of the guide tube (10) is connected to the bottom of the injection tube (6). An opening (7) is provided on one side of the fixed mold (1), and a fixing rod (14) is fixed on the inner wall of the opening (7). A cleaning scraper (1401) is fixed at one end of the fixing rod (14).

2. The injection molding mold for a cable junction box according to claim 1, characterized in that, The top of the guide tube (10) is fixed with a docking ring (11), the bottom of the injection tube (6) is provided with a docking groove (602), the inner top wall of the docking groove (602) is fixed with a rubber ring (13), and the docking ring (11) is threadedly connected in the docking groove (602).

3. The injection molding mold for a cable junction box according to claim 1, characterized in that, The inner diameter of the guide tube (10) is the same as that of the injection tube (6) and they are connected to each other. The inner wall of the guide tube (10) is a smooth mirror structure. The bottom of the guide tube (10) is at the same horizontal line as the bottom of the molding block (301), and the bottom of the guide tube (10) is connected to the molding groove (8).

4. The injection molding mold for a cable junction box according to claim 1, characterized in that, A positioning ring (601) is fixed on the injection tube (6). After the injection tube (6) is threaded into the circular groove (12), the bottom of the positioning ring (601) fits tightly against the top of the moving mold (3).

5. The injection molding mold for a cable junction box according to claim 1, characterized in that, The opening (7) is arc-shaped, the length of the fixing rod (14) is longer than the length of the guide tube (10), the cleaning scraper (1401) is circular, and the diameter of the cleaning scraper (1401) is adapted to the inner diameter of the guide tube (10).

6. The injection molding mold for a cable junction box according to claim 1, characterized in that, Limiting rods (4) are fixed at the top four corners of the fixed mold (1), and a support plate (2) is fixed between the tops of the four limiting rods (4). The four corners of the moving mold (3) are respectively movably sleeved with the four limiting rods (4).

7. The injection molding mold for a cable junction box according to claim 1, characterized in that, A cylinder (5) is installed on the top of the support plate (2), and the power output shaft of the cylinder (5) moves through the support plate (2) and is fixed at the top center of the moving mold (3).

8. The injection molding mold for a cable junction box according to claim 1, characterized in that, The size of the molding block (301) is adapted to the size of the molding groove (8), and a gap for forming the cable junction box is provided between the molding block (301) and the molding groove (8).

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