A plastic bottom shell injection molding die structure of an electric meter box

Abstract

The application provides an injection molding die structure for a plastic bottom shell of an electric meter box, which comprises a push plate, an upper die plate and a lower die plate. A lower molding block and an external sliding block jointly enclose an injection molding cavity. A receiving groove is formed in the lower molding block for a reverse buckle on the molding bottom plate. A protrusion is connected in the receiving groove. A molding plate is transversely and slidably connected in the receiving groove. A supplementary block is longitudinally and slidably connected in a bottom wall sliding groove. During demolding, the first pull plate moves downward to make the supplementary block longitudinally exit and release the internal space. Then, the second pull plate is synchronously moved downward by a delay mechanism. The molding plate is driven by a connecting mechanism to transversely and inwardly shrink in a direction away from the protrusion, and the product reverse buckle is safely separated. The application does not need the external sliding block to penetrate the enclosing plate, and completely solves the technical problem that the reverse buckle on the internal bottom plate of the deep cavity cannot be demolded.

Description

Technical Field

[0001] This invention relates to injection molds, and more particularly, to an injection mold structure for a plastic bottom shell of an electric meter box. Background Technology

[0002] Existing plastic base shells for electricity meter boxes typically consist of a base plate and surrounding panels, which together form a cavity for housing the main body of the meter box. To ensure a secure assembly of the meter box body and the base shell, inverted clips are usually provided on the base plate of such plastic base shells, allowing the mounting plates on the meter box to be directly fitted onto these clips through their hanging holes.

[0003] Currently, for plastic parts with undercut structures, the industry typically uses a slider mechanism to assist in demolding. For example, Chinese utility model patent CN205969789U discloses an injection mold that facilitates demolding of undercut plastic parts. This patented technology, by setting a positioning groove on the outer slider, not only facilitates the forming of the stop of the injection molded part, but also utilizes the thermoplastic deformation of the injection molded part. During demolding, the sliding of the outer slider drives the stop to move, causing the injection molded part to deform and open, thereby achieving inner demolding. This design effectively avoids the appearance of the product with embedded lines or scratches, improving the yield rate.

[0004] However, the demolding mechanism of this mold relies heavily on the external slider moving laterally to apply force, thus it is only suitable for molding undercuts located outside the bottom shell. For the aforementioned meter box bottom shell with undercuts on the bottom plate, the external slider of the mold cannot penetrate deep into the cavity bottom plate for core pulling or avoidance actions due to the physical obstruction of the surrounding plate. Therefore, the existing injection mold structure cannot be directly used to mold undercuts located on the bottom plate. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide an injection molding mold structure for the plastic bottom shell of an electric meter box, which solves the technical problem that the obstruction of the surrounding plate causes the inner side of the bottom plate to be inverted and unable to be injected and demolded.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a plastic bottom shell injection molding mold structure for an electric meter box, comprising a push plate, an upper template, and a lower template. An upper molding area is formed on the side of the upper template facing the lower template. A lower molding block is connected to the side of the lower template facing the upper template. A first lower molding area is formed on the lower molding block. A first slider and a second slider are arranged around the lower molding block on the lower template. Two first sliders are arranged opposite each other, and two second sliders are arranged opposite each other. A second lower molding area for forming a surrounding plate is formed between the lower molding block and the sliders. A cavity is formed between the upper molding area, the first lower molding area, and the second lower molding area. The push plate is located on the side of the lower template away from the upper template. An ejector pin is connected to the push plate, passing through the lower molding block and placed in the cavity. The invention is characterized by further comprising a first draw plate and a second draw plate. A receiving groove is provided on the side of the block facing the upper template. A protrusion is connected in the receiving groove. A forming plate located on both sides of the protrusion is slidably connected to the receiving groove along its own transverse direction. A forming part with a forming inverted buckle is formed between the forming plate, the protrusion and the receiving groove. A sliding groove is provided on the bottom wall of the receiving groove. A supplementary block that moves longitudinally along the receiving groove is slidably connected in the sliding groove. One side of the forming plate abuts against the supplementary block, and the other side of the forming plate abuts against the protrusion. The first drawer is located on the side of the push plate away from the lower template and is connected to the supplementary block. The second drawer is located between the first drawer and the push plate. The first drawer moves away from the lower template to separate the supplementary block from the forming plate. Then, the first drawer drives the second drawer to move away from the lower template through a delay mechanism. The second drawer then moves the forming plate away from the protrusion through a connecting mechanism and separates it from the inverted buckle.

[0007] To achieve the above technical solution, in the mold-closed state, the upper forming area on the upper mold plate, the first lower forming area on the lower forming block, and the second lower forming area enclosed by the lower forming block, two first sliders, and two second sliders, together form the cavity. After injection molding, the first pull plate moves away from the lower mold plate, causing the supplementary block to move along the slide groove, separating the supplementary block from the forming plate. Subsequently, the first pull plate, through a delay mechanism, drives the second pull plate to move synchronously away from the lower mold plate. The second pull plate, through a connecting mechanism, causes the forming plate to move laterally away from the protrusion, thus separating the forming plate from the undercut. Finally, the push plate drives the ejector pin through the lower forming block to eject the product from the cavity. This achieves internal integration of the demolding mechanism, and through step-by-step core-pulling actions, successfully completes the demolding of the undercut inside the base plate without interfering with the surrounding plates.

[0008] In a preferred embodiment of the present invention, the delay mechanism includes an elastic element, a fixing recess, a fixing ring, a fixing rod, and a fixing block. The fixing recess is formed on the second drawer plate, the fixing ring is fixed to the inner wall of the fixing recess, one end of the fixing rod is connected to the first drawer plate, and the other end of the fixing rod is connected to the fixing block. The fixing block is located in the fixing recess and is used to abut against the fixing ring. After the first drawer plate moves a certain distance away from the second drawer plate, the fixing block abuts against the fixing ring. One end of the elastic element is connected to the lower template, and the other end of the elastic element passes through the push plate and is connected to the second drawer plate.

[0009] To achieve the above technical solution, when the first drawer plate moves away from the lower template, the fixing rod fixed to the first drawer plate drives the fixing block to move within the fixing recess of the second drawer plate. In this initial stage, the elastic element applies elastic force to the second drawer plate using its own elastic force, keeping the second drawer plate relatively stationary; until the first drawer plate moves a certain distance, the supplementary block separates from the forming plate, and then the fixing block abuts against the fixing ring on the inner wall of the fixing recess, thereby overcoming the elastic force of the elastic element and pulling the second drawer plate to move synchronously. This achieves two-stage timing delay control, ensuring that the forming plate only begins to perform lateral retraction after the supplementary block has completely exited and released sufficient clearance space.

[0010] As a preferred embodiment of the present invention, the connecting mechanism includes an inclined groove and an inclined column. The inclined groove is formed on the forming plate, one end of the inclined column is connected to the second draw plate, and the other end of the inclined column is slidably connected in the inclined groove.

[0011] To achieve the above technical solution, when the second drawer moves away from the lower template, the inclined column connected to the second drawer moves downward synchronously. Since the inclined column is slidably connected to the inclined groove on the forming plate, its sidewalls press against the inner wall of the inclined groove as it moves downward, generating a lateral thrust that drives the forming plate to move laterally along the receiving groove. This converts the longitudinal tension into a lateral force on the forming plate, ensuring stable transmission.

[0012] As a preferred embodiment of the present invention, a straight groove is provided on the side wall of the protrusion for forming a guide post inside the inverted opening, and the length direction of the straight groove is parallel to the length direction of the sliding groove.

[0013] To achieve the above technical solution, during the injection molding process, the molten plastic fills the straight groove opened on the side wall of the protrusion, thereby forming a guide post inside the inverted plastic bottom shell of the meter box. Since the length direction of the straight groove is parallel to the length direction of the slide, when the push plate pushes out the plastic bottom shell of the meter box, the formed guide post can slide out smoothly and unobstructed along the straight groove.

[0014] As a preferred embodiment of the present invention, the molding plate has an arc-shaped groove for molding anti-slip strips on the side facing the protrusion.

[0015] To achieve the above technical solution, during the injection molding process, the arc-shaped groove on the side of the molding plate facing the protrusion can form an anti-slip strip on the undercut surface of the corresponding plastic bottom shell of the meter box. This increases the structural strength and friction of the undercut part of the product; at the same time, the arc-shaped groove moves laterally away from the protrusion along with the molding plate, and its movement trajectory is consistent with the protrusion direction of the anti-slip strip, ensuring that the anti-slip strip can be smoothly demolded laterally.

[0016] In a preferred embodiment of the present invention, a T-shaped rod is fixedly connected to the side wall of the receiving groove, the molding plate includes an upper molding part and a lower molding part, and L-shaped guide grooves are provided on the side walls of the upper molding part and the lower molding part. The two sides of the T-shaped rod are respectively slidably connected to the two L-shaped guide grooves, and the upper molding part and the lower molding part are fixedly connected.

[0017] To achieve the above technical solution, the molding plate is composed of an upper molding part and a lower molding part fixedly connected together. When the molding plate moves laterally, the two sides of the T-shaped rod fixedly connected to the side wall of the receiving groove slide relative to each other in two L-shaped guide grooves. The split molding part reduces the processing difficulty of the L-shaped guide grooves; at the same time, the sliding cooperation between the T-shaped rod and the L-shaped guide groove provides a horizontal guiding mechanism for the molding plate. After the supplementary block separates from the molding plate, this horizontal guiding mechanism can limit its longitudinal displacement and improve the smoothness of the lateral movement of the molding plate.

[0018] In a preferred embodiment of the present invention, a plurality of inclined guide rods are connected to the lower template, and the first slider and the second slider are both provided with inclined guide holes. The inclined guide rods are slidably connected in the guide holes. A push rod is connected to the push plate for contacting the side of the first slider away from the upper template. The first slider drives the second slider to move synchronously through a linkage structure.

[0019] To achieve the above technical solution, after the lower mold plate separates from the upper mold plate, the push plate moves towards the lower mold plate, and the push rod on the push plate pushes the first slider upward. When the first slider is subjected to the upward pushing force, it is guided outward by the inclined guide rod and guide hole on the lower mold plate, and in this process, the second slider moves synchronously through the linkage structure. By using the push plate and push rod as the power source for the demolding of the outer slider, the core-pulling action of the slider is combined with the ejection action of the product, simplifying the relevant ejection block structure of the upper mold plate.

[0020] As a preferred embodiment of the present invention, the linkage structure includes a linkage rod and a linkage groove. The linkage rod is horizontally disposed and fixed to the end of the first slider. The linkage groove is opened at the end of the second slider. The linkage rod is slidably connected in the linkage groove. The linkage rod abuts against the inner wall of the linkage groove and causes the first slider and the second slider to move synchronously.

[0021] To achieve the above technical solution, when the first slider moves outward, the linkage rod fixed to the end of the first slider slides in the linkage groove at the end of the second slider. The linkage rod abuts against the inner wall of the linkage groove and applies a horizontal traction force, causing the second slider to move outward synchronously. Through the rigid traction of the linkage rod and the linkage groove, the power of the first slider can be directly transmitted to the second slider, realizing the simultaneous driving of multiple directions of synchronous core pulling by a single power source.

[0022] As a preferred embodiment of the present invention, a plurality of pressure blocks are connected to the upper template, and pressure grooves are formed on the first slider and the second slider, and the pressure blocks are used to abut against the inner wall of the pressure grooves.

[0023] To achieve the above technical solution, when the upper and lower mold plates are closed, multiple pressure blocks connected to the upper mold plate are pressed into the pressure grooves of the first and second sliders, with the pressure blocks in close contact with the inner walls of the pressure grooves. During high-pressure injection in the injection molding machine, the pressure blocks provide pressure to the first and second sliders. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the plastic bottom shell of the meter box, mainly showing the back structure of the plastic bottom shell of the meter box; Figure 2 This is a structural diagram of the plastic bottom shell of the meter box, mainly showing the internal structure of the plastic bottom shell of the meter box; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a structural diagram of the upper mold, mainly showing the location of the gate; Figure 5 To illustrate the three-dimensional structure of the upper mold; Figure 6 To illustrate the planar structure of the upper mold; Figure 7 To illustrate the planar structure of the lower mold; Figure 8 To illustrate the three-dimensional structure of the lower mold; Figure 9 To illustrate the connection structure between the molding plate and the supplementary block; Figure 10 for Figure 9 Enlarged view of point B; Figure 11 To illustrate the structure of the elastic component; Figure 12 To illustrate the structural diagram of the inclined column; Figure 13 for Figure 12 Enlarged view of point C; Figure 14 A cross-sectional view showing the delay mechanism; Figure 15 This is a structural diagram illustrating the inclined groove.

[0025] Reference numerals: 1. Upper template; 2. Lower template; 3. Push plate; 4. Second drawer plate; 5. First drawer plate; 6. Upper forming area; 7. Lower forming block; 8. First lower forming area; 9. First slider; 10. Second slider; 11. Second lower forming area; 13. Pressure block; 14. Pressure groove; 15. Ejector pin; 16. Angled guide rod; 17. Guide hole; 18. Push rod; 19. Linkage structure; 20. Linkage rod; 21. Linkage groove; 22. Receiving groove; 23. Protrusion; 24. 25. Molding plate; 26. Upper molding part; 27. Lower molding part; 28. Molding section; 29. ​​Straight groove; 30. Arc-shaped groove; 31. T-shaped rod; 32. L-shaped guide groove; 33. Slide groove; 34. Supplementing block; 35. Delay mechanism; 36. Elastic element; 37. Fixing recess; 38. Fixing ring; 39. Fixing rod; 40. Fixing block; 41. Inclined groove; 42. Inclined column; 100. Plastic bottom shell of meter box; 101. Guide column; 102. Inverted buckle; 103. Anti-slip strip. Detailed Implementation

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and mastered.

[0027] A molding die structure for injection molding a plastic bottom shell of an electric meter box includes an upper mold plate 1, a lower mold plate 2, a push plate 3, a second drawer plate 4, and a first drawer plate 5. An upper molding area 6 is formed on the side of the upper mold plate 1 facing the lower mold plate 2. A lower molding block 7 is fixedly connected to the side of the lower mold plate 2 facing the upper mold plate 1, and a first lower molding area 8 is formed on the lower molding block 7. An injection port communicating with the upper molding area 6 is formed on the upper mold plate 1.

[0028] To form the surrounding panels of the plastic base shell 100 of the meter box, a first slider 9 and a second slider 10 are provided on the lower mold plate 2, surrounding the lower molding block 7. The two first sliders 9 are arranged opposite each other, and the two second sliders 10 are arranged opposite each other. The lower molding block 7, the first sliders 9, and the second sliders 10 together form a second lower molding area 11 for molding the surrounding panels. The upper molding area 6, the first lower molding area 8, and the second lower molding area 11 combine together in the mold-closed state to form an injection cavity.

[0029] Multiple pressure blocks 13 are fixedly connected to the upper template 1, and pressure grooves 14 are correspondingly provided on the first slider 9 and the second slider 10. When the mold is closed, the pressure blocks 13 are in close contact with the inner wall of the pressure grooves 14, providing reliable pressure to the first slider 9 and the second slider 10.

[0030] The push plate 3 is located on the side of the lower mold plate 2 away from the upper mold plate 1. Multiple ejector pins 15 are fixedly connected to the push plate 3, passing through the lower forming block 7 and placed in the cavity. Multiple oblique guide rods 16 are fixedly connected to the lower mold plate 2. The first slider 9 and the second slider 10 each have obliquely set guide holes 17, and the oblique guide rods 16 are slidably connected to the corresponding guide holes 17.

[0031] A push rod 18 is also fixedly connected to the push plate 3. The push rod 18 is used to abut against the side of the first slider 9 away from the upper mold plate 1 after the mold is opened. The first slider 9 drives the second slider 10 to move synchronously through the linkage structure 19. The linkage structure 19 includes a linkage rod 20 that is horizontally arranged and fixed to the end of the first slider 9, and a linkage groove 21 that is opened at the end of the second slider 10. The linkage rod 20 is slidably connected in the linkage groove 21.

[0032] When the push plate 3 moves closer to the lower template 2, the push rod 18 pushes the first slider 9 to move. The first slider 9 is guided by the inclined guide rod 16 to move outward. The linkage rod 20 abuts against the inner wall of the linkage groove 21, causing the second slider 10 to move synchronously.

[0033] A receiving groove 22 is provided on the side of the lower molding block 7 facing the upper template 1. A protrusion 23 is fixedly connected to the center of the receiving groove 22. Molding plates 24 located on both sides of the protrusion 23 are slidably connected to the receiving groove 22 along its own transverse direction. The molding plates 24, the protrusion 23 and the receiving groove 22 together form a molding part 27, which is used to mold the undercut 102.

[0034] A straight groove 28 is provided on the side wall of the protrusion 23 for forming guide posts 101 inside the undercut 102, and an arc-shaped groove 29 is provided on the side of the forming plate 24 facing the protrusion 23 for forming anti-slip strips 103. Multiple straight grooves 28 are provided, and multiple formed guide posts 101 are used to guide self-tapping screws.

[0035] A T-shaped rod 30 is fixedly connected to the side wall of the receiving groove 22. The forming plate 24 is welded from an upper forming part 25 and a lower forming part 26. L-shaped guide grooves 31 are correspondingly formed on the side walls of the upper forming part 25 and the lower forming part 26. The two sides of the T-shaped rod 30 are slidably connected to the two L-shaped guide grooves 31 respectively. A sliding groove 32 is formed on the bottom wall of the receiving groove 22. A supplementary block 33 that moves longitudinally along the receiving groove 22 is slidably connected in the sliding groove 32.

[0036] In the molded injection state, one side of the molding plate 24 is in close contact with the supplementary block 33, and the other side of the molding plate 24 is in contact with the protrusion 23. The supplementary block 33 provides support for the molding plate 24, and the length direction of the straight groove 28 is parallel to the length direction of the slide groove 32.

[0037] The first drawer plate 5 is located on the side of the pusher plate 3 away from the lower template 2 and is fixedly connected to the supplementary block 33. The second drawer plate 4 is located between the first drawer plate 5 and the pusher plate 3. The first drawer plate 5 pulls the second drawer plate 4 through the delay mechanism 34, and the second drawer plate 4 drives the forming plate 24 to move through the connecting mechanism.

[0038] The delay mechanism 34 includes an elastic element 35, a fixing recess 36, a fixing ring 37, a fixing rod 38, and a fixing block 39. The fixing recess 36 is formed on the second drawer plate 4, and the fixing ring 37 is fixed to the inner wall of the fixing recess 36. One end of the fixing rod 38 is connected to the first drawer plate 5, and the other end is connected to the fixing block 39, which is located inside the fixing recess 36 and serves to abut against the fixing ring 37. One end of the elastic element 35 is fixedly connected to the lower template 2, and the other end of the elastic element 35 passes through a clearance hole on the push plate 3 and is fixedly connected to the second drawer plate 4. The elastic element 35 is a tension spring.

[0039] The connecting mechanism includes a sloping groove 41 and a sloping column 42. The sloping groove 41 is formed on the forming plate 24. One end of the sloping column 42 is connected to the second draw plate 4, and the other end of the sloping column 42 is slidably connected in the sloping groove 41.

[0040] The operation process is as follows: The mold opens, the upper mold plate 1 moves away from the lower mold plate 2, and the pressure block 13 disengages from the pressure groove 14. The first draw plate 5 is driven by the hydraulic cylinder to move away from the lower mold plate 2, which drives the supplementary block 33 to move, so that the supplementary block 33 separates from the forming plate 24, releasing clearance space for the forming plate 24 in the receiving groove 22. In the initial stage of the first draw plate 5 moving downward, the second draw plate 4 remains stationary due to the elastic force of the elastic element 35. At this time, the fixing rod 38 drives the fixing block 39 to run a distance in the fixing recess 36. When the first draw plate 5 continues to move downward a certain distance, the fixing block 39 abuts against the fixing ring 37, overcomes the elastic force of the elastic element 35 and pulls the second draw plate 4 to move synchronously. The downward movement of the second draw plate 4 drives the inclined column 42 to move downward. The side wall of the inclined column 42 squeezes the inner wall of the inclined groove 41, converting the downward pulling force into a lateral thrust, forcing the forming plate 24 to move away from the protrusion 23 along the T-shaped rod 30, so that the forming part 27 can be smoothly separated from the undercut 102.

[0041] Subsequently, the push plate 3 is driven by the ejection mechanism, and the ejector pin 15 on the push plate 3 pushes the product. At the same time, the push rod 18 pushes the first slider 9. The first slider 9 and the second slider 10 move by the cooperation of the inclined guide rod 16 and the linkage structure 19, so as to realize the demolding of the product.

[0042] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A plastic bottom shell injection molding mold structure for an electric meter box, comprising a push plate (3), an upper template (1), and a lower template (2), wherein the upper template (1) has an upper molding area (6) on the side facing the lower template (2), and the lower template (2) is connected to a lower molding block (7) on the side facing the upper template (1), wherein a first lower molding area (8) is provided on the lower molding block (7), and a first slider (9) and a second slider (10) are provided on the lower template (2) surrounding the lower molding block (7), wherein the two first sliders (9) are arranged opposite to each other, and the two second sliders (10) are arranged opposite to each other, wherein a second lower molding area (11) for molding a surrounding plate is formed between the lower molding block (7) and the sliders, and a cavity is formed between the upper molding area (6), the first lower molding area (8), and the second lower molding area (11), wherein the push plate (3) is located on the side of the lower template (2) away from the upper template (1), and an ejector pin (15) is connected on the push plate (3) passing through the lower molding block (7) and placed in the cavity, characterized in that: It also includes a first drawer plate (5) and a second drawer plate (4). The lower forming block (7) has a receiving groove (22) on the side facing the upper template (1). A protrusion (23) is connected in the receiving groove (22). The receiving groove (22) is slidably connected to forming plates (24) located on both sides of the protrusion (23) along its own transverse direction. A forming part (27) of forming undercut (102) is formed between the forming plate (24), the protrusion (23) and the receiving groove (22). A sliding groove (32) is provided on the bottom wall of the receiving groove (22). A supplementary block (33) that moves longitudinally along the receiving groove (22) is slidably connected in the sliding groove (32). One side of the forming plate (24) is connected to the supplementary block (33). The filling block (33) abuts, and the other side of the forming plate (24) abuts against the protrusion (23). The first draw plate (5) is located on the side of the push plate (3) away from the lower template (2) and is connected to the supplementary block (33). The second draw plate (4) is located between the first draw plate (5) and the push plate (3). The first draw plate (5) moves away from the lower template (2) to separate the supplementary block (33) from the forming plate (24). Then the first draw plate (5) drives the second draw plate (4) to move away from the lower template (2) through the delay mechanism (34), so that the second draw plate (4) moves the forming plate (24) away from the protrusion (23) and separates from the buckle (102) through the connecting mechanism.

2. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 1, characterized in that: The delay mechanism (34) includes an elastic element (35), a fixing recess (36), a fixing ring (37), a fixing rod (38), and a fixing block (39). The fixing recess (36) is opened on the second drawer plate (4). The fixing ring (37) is fixed on the inner wall of the fixing recess (36). One end of the fixing rod (38) is connected to the first drawer plate (5), and the other end of the fixing rod (38) is connected to the fixing block (39). The fixing block (39) is located in the fixing recess (36) and is used to abut against the fixing ring (37). After the first drawer plate (5) moves a certain distance away from the second drawer plate (4), the fixing block (39) abuts against the fixing ring (37). One end of the elastic element (35) is connected to the lower template (2), and the other end of the elastic element (35) passes through the push plate (3) and is connected to the second drawer plate (4).

3. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 1 or 2, characterized in that: The connecting mechanism includes a sloping groove (41) and a sloping column (42). The sloping groove (41) is formed on the molding plate (24). One end of the sloping column (42) is connected to the second draw plate (4), and the other end of the sloping column (42) is slidably connected in the sloping groove (41).

4. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 1, characterized in that: The side wall of the protrusion (23) is provided with a straight groove (28) for forming a guide post (101) inside the buckle (102), and the length direction of the straight groove (28) is parallel to the length direction of the slide groove (32).

5. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 1 or 4, characterized in that: The molding plate (24) has an arc-shaped groove (29) for molding the anti-slip strip (103) on the side facing the protrusion (23).

6. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 1, characterized in that: A T-shaped rod (30) is fixedly connected to the side wall of the receiving groove (22). The molding plate (24) includes an upper molding part (25) and a lower molding part (26). An L-shaped guide groove (31) is provided on the side wall of both the upper molding part (25) and the lower molding part (26). The two sides of the T-shaped rod (30) are slidably connected in the two L-shaped guide grooves (31). The upper molding part (25) and the lower molding part (26) are fixedly connected.

7. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 1, characterized in that: The lower template (2) is connected to a plurality of inclined guide rods (16). The first slider (9) and the second slider (10) are both provided with inclined guide holes (17). The inclined guide rods (16) are slidably connected in the guide holes (17). The push plate (3) is connected to a push rod (18) for contacting the side of the first slider (9) away from the upper template (1). The first slider (9) drives the second slider (10) to move synchronously through the linkage structure (19).

8. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 7, characterized in that: The linkage structure (19) includes a linkage rod (20) and a linkage groove (21). The linkage rod (20) is horizontally positioned and fixed to the end of the first slider (9). The linkage groove (21) is opened at the end of the second slider (10). The linkage rod (20) is slidably connected in the linkage groove (21). The linkage rod (20) abuts against the inner wall of the linkage groove (21) and causes the first slider (9) and the second slider (10) to move synchronously.

9. The injection molding die structure for a plastic bottom shell of an electric meter box according to claim 8, characterized in that: Multiple pressure blocks (13) are connected to the upper template (1). The first slider (9) and the second slider (10) are provided with pressure grooves (14). The pressure blocks (13) are used to abut against the inner wall of the pressure grooves (14).

Images