Plastic flange assembly injection mold

Abstract

The utility model relates to injection mold technical field discloses a kind of plastic flange assembly injection molds, including base, upper die, forming cavity mounting seat and partition post mounting seat, the lower die is fixedly connected with the upper end middle part of base, the lower end center of forming cavity mounting seat is fixedly connected with partition post main body, the lower end of lower die is provided with adjustable material feeding assembly, forming cavity mounting seat and partition post mounting seat are respectively with the installation component between corresponding lower die and upper die are provided, the adjustable material feeding assembly includes two second hydraulic cylinders and multiple sliding jacks, two second hydraulic cylinders are fixedly arranged on base. In the utility model, through adjustable material feeding assembly, can be flexibly adjusted material feeding block spacing according to different specifications flange, ensure that material feeding effect passes through installation component, without additional tool, single person can quickly complete the dismounting of forming cavity mounting seat and partition post mounting seat, substantially shorten mould change time.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold for a plastic flange assembly. Background Technology

[0002] Plastic flange assemblies are important components in pipe connections and equipment installation, and are widely used in many fields such as chemical industry, water conservancy, and construction. As a key piece of equipment for the mass production of plastic flanges, the structural design of injection molds directly affects product quality, production efficiency, and changeover costs.

[0003] However, existing plastic flange injection molds have many shortcomings in actual use: On the one hand, the ejector block position of the ejector assembly is mostly fixed and cannot be flexibly adjusted according to the size of different flange specifications. When producing different models of flanges, the uneven force during product demolding is often caused by the mismatch of the ejector position, which can easily lead to deformation and damage. The mold has poor adaptability to multi-specification products. On the other hand, key components such as the molding cavity and partition columns of the mold are mostly fixedly connected to the mold body or require special tools for disassembly and assembly. When it is necessary to change the product specification, the changeover process is cumbersome and time-consuming, which not only increases the difficulty and cost of manual operation, but also leads to extended production downtime, seriously affecting production efficiency and the flexible production capacity of the equipment.

[0004] Therefore, those skilled in the art have provided a plastic flange assembly injection mold to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a plastic flange assembly injection mold. Through the adjustable ejector assembly, the spacing of the ejector blocks can be flexibly adjusted according to different flange specifications to ensure the ejection effect and improve the mold's adaptability to different products. By installing the assembly, no additional tools are required, and a single person can quickly complete the disassembly and assembly of the molding cavity mounting seat and the partition column mounting seat, which greatly shortens the mold changeover time, improves production efficiency, and reduces the difficulty of operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic flange assembly injection mold includes a base, an upper mold, a molding cavity mounting seat, and a partition column mounting seat. A lower mold is fixedly connected to the upper middle part of the base. A partition column body is fixedly connected to the lower center of the molding cavity mounting seat. An adjustable ejector assembly is provided at the lower end of the lower mold. Mounting components are provided between the molding cavity mounting seat and the partition column mounting seat and the corresponding lower mold and upper mold, respectively.

[0008] The adjustable ejector assembly includes two second hydraulic cylinders and multiple sliding ejector blocks. The two second hydraulic cylinders are fixedly mounted on the base. The telescopic ends of the two bases are fixedly connected to lifting seats. The lifting seats are movably mounted inside the lower mold. The upper end of the lifting seats has multiple moving slots. The inner walls of the two sides of the multiple moving slots are rotatably connected to moving screws. The outer walls of the multiple moving screws are threaded with moving sliders. The upper ends of the multiple moving sliders are fixedly connected to ejector blocks via connecting rods. The lower inner wall of the molding cavity mounting base has multiple first sliding slots. The multiple sliding ejector blocks are slidably mounted in the corresponding first sliding slots. The front end of the lower mold is fixedly mounted with a controller.

[0009] Through the above technical solution, by controlling the rotation of the moving screw, the moving slider moves, which in turn drives the ejector block to move through the connecting rod. This allows for flexible adjustment of the ejector block spacing according to different flange specifications, ensuring ejection effect and improving the mold's adaptability to different products. The second hydraulic cylinder can drive the lifting seat to rise and fall, working in conjunction with the ejector block to achieve the ejection action.

[0010] Furthermore, the mounting assembly includes multiple spring clips. Each of the upper and lower molds has a mounting groove at one opposite end. The forming cavity mounting seat and the partition column mounting seat are engaged within their respective mounting grooves. Each of the two mounting grooves has two reset grooves on its inner wall. One end of each spring clip is fixedly connected to the inner wall of the corresponding reset groove. Each of the forming cavity mounting seat and the partition column mounting seat has two fixing slots on its outer side. Each of the multiple spring clips engages with its corresponding fixing slot. The upper and lower inner walls of each of the multiple reset grooves have second... The sliding groove has a connecting block slidably disposed inside each of the multiple second sliding grooves. Each of the multiple connecting blocks is fixedly connected to a corresponding spring clip. A third sliding groove is opened on one side of each of the two second sliding grooves located at the same reset groove. A sliding rod and a sliding plate are slidably disposed inside each of the multiple third sliding grooves. Each of the multiple sliding plates is fixedly connected to a corresponding sliding rod and a connecting block. One end of each of the multiple sliding rods passes through the corresponding lower mold and upper mold and is rotatably connected to a rotatable pull head. Two storage slots are opened on the outer side of the lower mold and upper mold near the corresponding rotatable pull head.

[0011] With the above technical solution, during installation, the molding cavity mounting seat or the partition column mounting seat is inserted into the mounting groove. The spring block moves in the reset groove after being squeezed. When aligned with the fixed slot, the spring block springs into the fixed slot to complete the fixation. During disassembly, the rotatable pull head is pulled, and the spring block is disassembled from the fixed slot through the sliding rod, sliding plate, and connecting block. No additional tools are required, and a single person can quickly complete the disassembly and assembly of the molding cavity mounting seat and the partition column mounting seat, which greatly shortens the mold changeover time, improves production efficiency, and reduces the difficulty of operation.

[0012] Furthermore, the lifting seat has a drive groove inside, and a drive shaft is rotatably connected to the lower inner wall of the drive groove. A first bevel gear is fixedly connected to the upper end of the drive shaft. One end of each of the multiple moving screws passes through the lifting seat into the drive groove and is fixedly connected to a second bevel gear. The multiple second bevel gears mesh with the first bevel gear. A drive motor is fixedly installed in the middle of the lower end of the lifting seat. The output end of the drive motor passes through the lifting seat and is fixedly connected to the drive shaft. The drive motor is electrically connected to the controller. Both of the two second hydraulic cylinders are electrically connected to the controller.

[0013] Through the above technical solution, the controller drives the motor to work, and the output end drives the drive shaft to rotate. The first bevel gear on the drive shaft rotates, and the multiple second bevel gears meshing with the first bevel gear rotate accordingly, thereby driving the corresponding moving lead screw to rotate, thus realizing the driving of the moving slider.

[0014] Furthermore, spring grooves are provided on both sides of the inner walls of the plurality of first sliding grooves, and spring blocks are fixedly connected to the upper inner walls of the plurality of spring grooves, and the plurality of spring blocks are fixedly connected to the corresponding sliding top blocks.

[0015] With the above technical solution, when the sliding top block slides in the first sliding groove, it will squeeze the spring block, and the spring block will undergo elastic deformation. When the top block no longer applies pressure to the sliding top block, the elastic force of the spring block can push the sliding top block to reset.

[0016] Furthermore, each of the multiple rotatable pull heads has a stop bar fixedly connected to one end near the top or bottom, and the multiple stop bars are movably arranged within the corresponding storage slots;

[0017] With the above technical solution, when the rotatable pull head is pulled to disengage the spring block from the fixed slot, the abutment moves with the rotatable pull head and disengages from the storage slot. When the rotatable pull head is rotated, the abutment rotates to a position away from the storage slot. At this point, even if the rotatable pull head is released, the spring block cannot be reset due to the obstruction of the abutment. This facilitates the disassembly process for a single person to operate independently, avoids increasing the difficulty of operation due to the need to continuously pull the rotatable pull head, and improves the convenience of disassembly.

[0018] Furthermore, the upper end of the base is fixedly connected to a fixed plate by multiple support rods, and a first hydraulic cylinder is fixedly installed in the middle of the fixed plate. The first hydraulic cylinder is electrically connected to the controller. The telescopic end of the first hydraulic cylinder passes through the fixed plate and is fixedly connected to a connecting seat. The upper mold is fixedly connected to the connecting seat, and the connecting seat is slidably installed on multiple support rods.

[0019] Through the above technical solution, the controller controls the extension and retraction of the first hydraulic cylinder. The extension and retraction end of the first hydraulic cylinder drives the connecting seat to slide along the support rod, thereby driving the upper mold to rise and fall, realizing the mold closing and opening actions.

[0020] Furthermore, the plurality of movable sliders are slidably disposed within corresponding movable slots, and the plurality of top material blocks are movablely disposed within corresponding first sliding slots;

[0021] Through the above technical solution, the movable slider slides in the movable groove, providing guidance for the movement of the top block, and also enabling the movable slider to move stably in the first sliding groove. The top block is movably set in the first sliding groove, so that when the top block moves up and down, it can smoothly push the sliding top block.

[0022] Furthermore, positioning telescopic rods are fixedly connected to the opposite ends of the lifting seat and the base at the front and rear positions;

[0023] With the above technical solution, when the lifting seat is raised or lowered, the positioning telescopic rod passively and synchronously extends and retracts, which plays a positioning and guiding role in the raising and lowering of the lifting seat.

[0024] This utility model has the following beneficial effects:

[0025] 1. The present invention proposes a plastic flange assembly injection mold, which, through an adjustable ejector assembly, enables the synchronous adjustment of the spacing of multiple ejector blocks, thereby allowing for flexible adjustment of the multiple ejector blocks according to different flange specifications, ensuring ejection effect, and improving the mold's adaptability to different products.

[0026] 2. The plastic flange assembly injection mold proposed in this utility model, through the installation of the components, uses a quick-locking structure of spring clips and fixed slots, combined with the linkage design of rotatable pull head and push rod, to complete the disassembly and assembly of the molding cavity mounting seat and the partition column mounting seat without additional tools. The mold can be quickly changed by a single person, which significantly shortens the downtime caused by specification changes, reduces the difficulty of operation and labor costs, and effectively improves production efficiency and the flexible production capability of the equipment. Attached Figure Description

[0027] Figure 1 This is an isometric schematic diagram of an injection mold for a plastic flange assembly proposed in this utility model.

[0028] Figure 2 This is a partial orthogonal cross-sectional view of an injection mold for a plastic flange assembly proposed in this utility model;

[0029] Figure 3 This is a front sectional view of the lifting seat of the injection mold for a plastic flange assembly proposed in this utility model;

[0030] Figure 4 This is a top view schematic diagram of the lifting seat of the injection mold for a plastic flange assembly proposed in this utility model;

[0031] Figure 5 for Figure 2Enlarged structural diagram at point A;

[0032] Figure 6 for Figure 2 Enlarged structural diagram at point B;

[0033] Figure 7 for Figure 2 A magnified schematic diagram of the structure at point C.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Base; 2. Support rod; 3. Fixing plate; 4. First hydraulic cylinder; 5. Connecting seat; 6. Upper mold; 7. Lower mold; 8. Separator column body; 9. Molding cavity mounting seat; 10. Mounting assembly; 11. Adjustable ejector assembly; 12. Second hydraulic cylinder; 13. Lifting seat; 14. Moving groove; 15. Moving screw; 16. Moving slider; 17. Connecting rod; 18. Ejector block; 19. Drive groove; 20. Drive shaft; 21. First bevel gear; 22. ... 23. Two bevel gears; 24. Drive motor; 25. First sliding groove; 26. Sliding top block; 27. Spring groove; 28. Spring block; 29. ​​Controller; 30. Mounting groove; 31. Divider column mounting base; 32. Reset groove; 33. Spring clip; 34. Fixing groove; 35. Second sliding groove; 36. Connecting block; 37. Third sliding groove; 38. Sliding plate; 39. Sliding rod; 40. Rotatable pull head; 41. Storage groove; 42. Support rod; 43. Positioning telescopic rod. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Reference Figure 1-5 This utility model provides a specific embodiment: a plastic flange assembly injection mold, including a base 1, an upper mold 6, a molding cavity mounting seat 9 and a partition column mounting seat 30. The upper middle part of the base 1 is fixedly connected to a lower mold 7, the lower center of the molding cavity mounting seat 9 is fixedly connected to a partition column body 8, the lower end of the lower mold 7 is provided with an adjustable ejector assembly 11, and the molding cavity mounting seat 9 and the partition column mounting seat 30 are respectively provided with mounting assemblies 10 between them and the corresponding lower mold 7 and upper mold 6.

[0038] The adjustable top material assembly 11 includes two second hydraulic cylinders 12 and multiple sliding top blocks 25. Both second hydraulic cylinders 12 are fixedly mounted on the base 1. A lifting seat 13 is fixedly connected to the telescopic ends of the two bases 1. The lifting seat 13 is movably mounted inside the lower mold 7. Positioning telescopic rods 42 are fixedly connected to the front and rear ends of the lifting seat 13 and the base 1, respectively. When the lifting seat 13 rises and falls, the positioning telescopic rods 42 passively and synchronously extend and retract, providing positioning and guidance for the rise and fall of the lifting seat 13. Multiple moving slots 14 are provided at the upper end of the lifting seat 13. Moving screws 15 are rotatably connected between the inner walls of both sides of the multiple moving slots 14. Moving sliders 16 are threaded onto the outer walls of the multiple moving screws 15. The upper ends of the multiple moving sliders 16 are connected via... Rod 17 is fixedly connected to a top material block 18. Multiple first sliding grooves 24 are formed on the lower inner wall of the molding cavity mounting base 9. Multiple sliding top blocks 25 are slidably disposed within their respective first sliding grooves 24. Multiple movable sliders 16 are slidably disposed within their respective movable grooves 14. Multiple top material blocks 18 are movablely disposed within their respective first sliding grooves 24. The movable sliders 16 slide within their movable grooves 14, providing guidance for the movement of the top material blocks 18 and enabling them to move stably within the first sliding grooves 24. The movable top material blocks 18 are movable within the first sliding grooves 24, allowing them to smoothly push against the sliding top blocks 25 during lifting and lowering movements. Springback grooves 26 are formed on both sides of the inner walls of the multiple first sliding grooves 24. The upper ends of the multiple springback grooves 26... Each wall is fixedly connected with a spring block 27, and multiple spring blocks 27 are fixedly connected to corresponding sliding top blocks 25. When the sliding top block 25 slides in the first sliding groove 24, it will squeeze the spring block 27, and the spring block 27 will undergo elastic deformation. When the top block 18 no longer applies pressure to the sliding top block 25, the elastic force of the spring block 27 can push the sliding top block 25 to reset. A controller 28 is fixedly installed at the front end of the lower mold 7. By controlling the rotation of the moving screw 15, the moving slider 16 moves, which in turn drives the top block 18 to move through the connecting rod 17. Thus, the spacing of the top blocks 18 can be flexibly adjusted according to different flange specifications to ensure the ejection effect and improve the mold's adaptability to different products. The second hydraulic cylinder 12 can drive the lifting seat 13 to rise and fall, cooperating with the top block 18 to move. The material block 18 performs the pushing action. A drive groove 19 is provided inside the lifting seat 13. A drive shaft 20 is rotatably connected to the lower inner wall of the drive groove 19. A first bevel gear 21 is fixedly connected to the upper end of the drive shaft 20. One end of each of the multiple moving screws 15 passes through the lifting seat 13 into the drive groove 19 and is fixedly connected to a second bevel gear 22. All the second bevel gears 22 mesh with the first bevel gear 21. A drive motor 23 is fixedly installed in the middle of the lower end of the lifting seat 13. The output end of the drive motor 23 passes through the lifting seat 13 and is fixedly connected to the drive shaft 20. The drive motor 23 is electrically connected to the controller 28. Both second hydraulic cylinders 12 are electrically connected to the controller 28. The controller 28 drives the motor 23 to work, and the output end drives the drive shaft 20 to rotate.The first bevel gear 21 on the drive shaft 20 rotates, and the multiple second bevel gears 22 meshing with the first bevel gear 21 rotate accordingly, thereby driving the corresponding moving screw 15 to rotate, thus driving the moving slider 16. A fixed plate 3 is fixedly connected to the upper end of the base 1 via multiple support rods 2. A first hydraulic cylinder 4 is fixedly installed in the middle of the fixed plate 3. The first hydraulic cylinder 4 is electrically connected to the controller 28. The telescopic end of the first hydraulic cylinder 4 passes through the fixed plate 3 and is fixedly connected to a connecting seat 5. The upper mold 6 is fixedly connected to the connecting seat 5, which is slidably mounted on the multiple support rods 2. The controller 28 controls the telescopic extension and retraction of the first hydraulic cylinder 4. The telescopic end of the first hydraulic cylinder 4 drives the connecting seat 5 to slide along the support rods 2, thereby driving the upper mold 6 to rise and fall, realizing the mold closing and opening actions.

[0039] Reference Figure 2 , Figure 6 and Figure 7The mounting assembly 10 includes multiple spring clips 32. Mounting grooves 29 are provided at opposite ends of the upper mold 6 and lower mold 7. The molding cavity mounting seat 9 and the partition column mounting seat 30 are engaged within their respective mounting grooves 29. Two reset grooves 31 are provided on the inner walls of each mounting groove 29. One end of the spring of each of the multiple spring clips 32 is fixedly connected to one side of the inner wall of the corresponding reset groove 31. Two fixing grooves 33 are provided on the outer sides of both the molding cavity mounting seat 9 and the partition column mounting seat 30. The multiple spring clips 32 are engaged with their corresponding fixing grooves 33. Second sliding grooves are provided on the upper and lower inner walls of the multiple reset grooves 31. The moving groove 34 and the multiple second sliding grooves 34 each have a connecting block 35 slidably disposed inside. Each connecting block 35 is fixedly connected to a corresponding spring clip 32. Two second sliding grooves 34 located at the same reset groove 31 each have a third sliding groove 36 on one side. Each of the multiple third sliding grooves 36 has a sliding rod 38 and a sliding plate 37 slidably disposed inside. Each sliding plate 37 is fixedly connected to a corresponding sliding rod 38 and a connecting block 35. One end of each sliding rod 38 passes through the corresponding lower mold 7 and upper mold 6 and is rotatably connected to a rotatable pull head 39. The outer sides of the lower mold 7 and upper mold 6 are near the corresponding rotatable pull head 39. Each component has two storage slots 40. During installation, the molding cavity mounting base 9 or the partition column mounting base 30 is inserted into the mounting slot 29. The spring clip 32 moves within the reset slot 31 after being compressed. When aligned with the fixing slot 33, the spring clip 32 springs into the fixing slot 33 to complete the fixation. During disassembly, the rotatable pull head 39 is pulled, and the spring clip 32 is disengaged from the fixing slot 33 via the sliding rod 38, sliding plate 37, and connecting block 35, allowing for easy disassembly. No additional tools are required, and a single person can quickly complete the assembly and disassembly of the molding cavity mounting base 9 and the partition column mounting base 30, significantly shortening mold changeover time, improving production efficiency, and reducing operational costs. The difficulty is reduced by the fact that each of the multiple rotatable pull heads 39 has a stop rod 41 fixedly connected to one end near the top or bottom. The multiple stop rods 41 are all movable within the corresponding storage slots 40. When the rotatable pull head 39 is pulled to disengage the spring block 32 from the fixed slot 33, the stop rod 41 moves with the rotatable pull head 39 and disengages from the storage slot 40. When the rotatable pull head 39 is rotated, the stop rod 41 rotates to a position away from the storage slot 40. At this point, even if the rotatable pull head 39 is released, the spring block 32 cannot be reset due to the obstruction of the stop rod 41. This facilitates the disassembly process for a single person to operate independently, avoids increasing the difficulty of operation due to the need to continuously pull the rotatable pull head 39, and improves the convenience of disassembly.

[0040] Working principle: When the mold is working, firstly, according to the specifications of the flange to be produced, the molding cavity mounting seat 9 and the partition column mounting seat 30 are replaced and fixed through the mounting component 10. During installation, the mounting seat of the corresponding specification is inserted into the mounting groove 29 of the upper mold 6 or the lower mold 7, and the spring block 32 automatically springs into the fixing groove 33 to achieve fixation. If replacement is required, pull the rotatable pull head 39 to disengage the spring block 32 from the groove, rotate the rotatable pull head 39 to lock the stop rod 41 to prevent reset, and the old mounting seat can be removed. The operation is reversed to complete the fixing of the new mounting seat. Before injection molding, the drive motor 23 is started by the controller 28, which drives the moving screw 15 to rotate through the bevel gear transmission, so that the moving slider 16 moves along the moving groove 14. Then, the spacing of the ejector blocks 18 is adjusted to fit the current flange specifications. During the injection molding process (the injection port is on the partition column mounting seat 30), the controller 28 controls the extension and retraction of the first hydraulic cylinder 4, which drives the upper mold 6 to rise and fall along the support rod 2 to realize mold closing and mold opening. After mold closing, the flange assembly is injection molded. When the mold is opened after molding, the controller 28 starts the second hydraulic cylinder 12 to push the lifting seat 13 to rise. The ejector blocks 18 then lift the molded flange assembly. During the ejection process, the sliding ejector block 25 moves along the first sliding groove 24 under the action of the ejector block 18 and compresses the spring block 27. After the ejection is completed, the second hydraulic cylinder 12 drives the lifting seat 13 to fall, and the sliding ejector block 25 resets under the elastic force of the spring block 27.

[0041] The following points should be noted in this article:

[0042] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0043] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic flange assembly injection mold, comprising a base (1), an upper mold (6), a molding cavity mounting seat (9), and a partition column mounting seat (30), characterized in that: The lower mold (7) is fixedly connected to the middle of the upper end of the base (1), and the partition column body (8) is fixedly connected to the center of the lower end of the molding cavity mounting seat (9). An adjustable ejector assembly (11) is provided at the lower end of the lower mold (7). The molding cavity mounting seat (9) and the partition column mounting seat (30) are respectively provided with mounting components (10) between the lower mold (7) and the upper mold (6). The adjustable top material assembly (11) includes two second hydraulic cylinders (12) and multiple sliding top blocks (25). The two second hydraulic cylinders (12) are fixedly mounted on the base (1). The telescopic ends of the two bases (1) are fixedly connected to the lifting seats (13). The lifting seats (13) are movably mounted inside the lower mold (7). The upper end of the lifting seats (13) is provided with multiple moving grooves (14). The inner walls on both sides of the multiple moving grooves (14) are rotatably connected to moving screws (15). The outer walls of the multiple moving screws (15) are threaded with moving sliders (16). The upper ends of the multiple moving sliders (16) are fixedly connected to top material blocks (18) through connecting rods (17). The inner wall of the lower end of the molding cavity mounting base (9) is provided with multiple first sliding grooves (24). The multiple sliding top blocks (25) are slidably mounted in the corresponding first sliding grooves (24). The front end of the lower mold (7) is fixedly provided with a controller (28).

2. The injection mold for a plastic flange assembly according to claim 1, characterized in that: The mounting assembly (10) includes multiple spring clips (32). The upper mold (6) and lower mold (7) each have a mounting groove (29) at one end. The molding cavity mounting seat (9) and the partition column mounting seat (30) are engaged within their respective mounting grooves (29). The inner walls of both mounting grooves (29) have two reset grooves (31). One end of the spring of each of the multiple spring clips (32) is fixedly connected to one side of the inner wall of the corresponding reset groove (31). The outer sides of both the molding cavity mounting seat (9) and the partition column mounting seat (30) have two fixing grooves (33). The multiple spring clips (32) engage with their corresponding fixing grooves (33). The upper and lower inner walls of the multiple reset grooves (31) each have a second sliding groove (34). The interior of each of the second sliding grooves (34) is slidably provided with a connecting block (35), and each of the connecting blocks (35) is fixedly connected to a corresponding spring clip (32). Each of the two second sliding grooves (34) located at the same reset groove (31) has a third sliding groove (36) on one side. Each of the third sliding grooves (36) has a sliding rod (38) and a sliding plate (37) slidably provided inside. Each of the sliding plates (37) is fixedly connected to a corresponding sliding rod (38) and a connecting block (35). One end of each of the sliding rods (38) passes through the corresponding lower mold (7) and upper mold (6) and is rotatably connected to a rotatable pull head (39). Two storage slots (40) are opened on the outer side of the lower mold (7) and upper mold (6) near the corresponding rotatable pull head (39).

3. The injection mold for a plastic flange assembly according to claim 1, characterized in that: The lifting seat (13) has a drive groove (19) inside. The lower inner wall of the drive groove (19) is rotatably connected to a drive shaft (20). The upper end of the drive shaft (20) is fixedly connected to a first bevel gear (21). One end of each of the multiple moving screws (15) passes through the lifting seat (13) into the drive groove (19) and is fixedly connected to a second bevel gear (22). The multiple second bevel gears (22) mesh with the first bevel gear (21). A drive motor (23) is fixedly installed in the middle of the lower end of the lifting seat (13). The output end of the drive motor (23) passes through the lifting seat (13) and is fixedly connected to the drive shaft (20). The drive motor (23) is electrically connected to the controller (28). The two second hydraulic cylinders (12) are electrically connected to the controller (28).

4. The injection mold for a plastic flange assembly according to claim 1, characterized in that: Each of the first sliding grooves (24) has a spring groove (26) on both sides of its inner wall. Each of the spring grooves (26) has a spring block (27) fixedly connected to its upper inner wall. Each of the spring blocks (27) is fixedly connected to a corresponding sliding top block (25).

5. The injection mold for a plastic flange assembly according to claim 2, characterized in that: Each of the multiple rotatable pull heads (39) has a stop bar (41) fixedly connected to one end near the top or bottom, and the multiple stop bars (41) are movably set in the corresponding storage slots (40).

6. The injection mold for a plastic flange assembly according to claim 1, characterized in that: The upper end of the base (1) is fixedly connected to a fixing plate (3) by multiple support rods (2). A first hydraulic cylinder (4) is fixedly installed in the middle of the fixing plate (3). The first hydraulic cylinder (4) is electrically connected to the controller (28). The telescopic end of the first hydraulic cylinder (4) passes through the fixing plate (3) and is fixedly connected to a connecting seat (5). The upper mold (6) is fixedly connected to the connecting seat (5). The connecting seat (5) is slidably installed on multiple support rods (2).

7. The injection mold for a plastic flange assembly according to claim 1, characterized in that: Multiple movable sliders (16) are slidably disposed within their respective movable grooves (14), and multiple top material blocks (18) are movably disposed within their respective first sliding grooves (24).

8. The injection mold for a plastic flange assembly according to claim 1, characterized in that: Positioning telescopic rods (42) are fixedly connected to the front and rear ends of the lifting seat (13) and the base (1).

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