Injection mold

Abstract

The injection mold comprises a movable mold set, a fixed mold set, a core rod, a shifting rod and an oil cylinder, the movable mold set abuts against the fixed mold set so as to form a mold cavity in a matched mode, the core rod is embedded and slides in the fixed mold set, and the core rod extends into the movable mold set and abuts against the movable mold set so as to be matched with the movable mold set to form an annular cavity; the shifting rod is embedded in the fixed die set and slides in the direction close to or away from the movable die set, one end of the shifting rod penetrates through and slides on the core rod, the end, penetrating through the core rod, of the shifting rod and the core rod are arranged in an inclined mode, the oil cylinder is fixedly connected to the fixed die base, a piston rod of the oil cylinder is connected with one end of the shifting rod, and the other end of the shifting rod is connected with the movable die set. And when the shifting rod is driven by the oil cylinder to be far away from the movable mold seat, the core rod is driven by the shifting rod to be separated from the movable mold. The shifting rod is driven by the oil cylinder to slide, so that the core rod is driven to be separated from the movable mold before mold opening, and the effect of reducing the loss of the core rod in the injection mold opening process is achieved.

Description

Technical Field

[0001] This application relates to the field of molds, and more particularly to an injection mold. Background Technology

[0002] Injection molds are various molds and tools used in industrial production to mold desired products. They mainly achieve the shaping of objects by changing the physical state of the material being molded. The mandrel is an important component of an injection mold, primarily serving a supporting and shaping function.

[0003] In related technologies, refer to Figure 1 and Figure 2 An injection mold includes a moving mold assembly 2, a fixed mold assembly 1, and a mandrel 3. The moving mold assembly 2 and the fixed mold assembly 1 abut against each other to form a mold cavity 5 for injecting molten plastic. The fixed mold assembly 1 has an insert hole 122 that communicates with the mold cavity 5. The mandrel 3 is embedded in the insert hole 122. The moving mold assembly 2 has a circular groove 222. A boss 223 is fixedly connected to the bottom of the circular groove 222. One end of the mandrel 3 extends into the circular groove 222 and abuts against the boss 223 to cooperate with the moving mold assembly 2 to form an annular cavity 224 that is injection molded into a ring. The working principle of the injection mold is as follows: molten plastic is injected into the mold cavity 5, cooled and solidified, and then the moving mold assembly 2 is moved to separate the fixed mold assembly 1 and the moving mold assembly 2. The molded product is then removed from the mold cavity 5.

[0004] Regarding the aforementioned technologies, the inventors believe that when injection molding is performed using the aforementioned injection mold, since the two ends of the mandrel are located in the fixed mold group and the moving mold group respectively, during the mold opening process, the end of the mandrel extending into the moving mold group moves with the movement of the moving mold group, while the end of the mandrel located in the fixed mold group is constrained and fixed by the fixed mold group. At this time, the mandrel is subjected to shearing forces from the fixed mold group and the moving mold group, which can easily lead to the breakage of the mandrel. There is still room for improvement. Utility Model Content

[0005] In order to improve the problem that the mandrel is subjected to shearing forces from the fixed mold assembly and the moving mold assembly during the mold opening process, which easily leads to the breakage of the mandrel, this application provides an injection mold.

[0006] The injection mold provided in this application adopts the following technical solution:

[0007] An injection mold includes a movable mold base, a movable mold, a fixed mold base, a fixed mold, a mandrel, a pusher rod, and a hydraulic cylinder. The movable mold base abuts against the fixed mold base to form a cavity for mounting the movable mold and the fixed mold. The movable mold is fixedly connected to the movable mold base, and the fixed mold is fixedly connected to the fixed mold base. The movable mold abuts against the fixed mold to form a mold cavity for injecting molten plastic. The fixed mold has an insert hole that communicates with the mold cavity. The mandrel is inserted into and slides within the insert hole. The movable mold has a circular groove, and a boss is fixedly connected to the bottom of the groove. The mandrel extends into the circular groove and abuts against the boss to cooperate with the movable mold to form an injection-molded ring. The ring cavity includes an insert and a drive. The insert is embedded in the fixed mold and the fixed mold base and slides in a direction close to or away from the moving mold base. One end of the insert penetrates the fixed mold base. The drive is fixedly connected to the other end of the insert and slides on the mandrel. The drive and the mandrel are inclined. The hydraulic cylinder is fixedly connected to the fixed mold base. The piston rod of the hydraulic cylinder is connected to one end of the drive. When the drive is driven by the hydraulic cylinder to move away from the moving mold base, the mandrel is driven by the drive and slides away from the boss along the axial direction of the mandrel, thus disengaging from the moving mold.

[0008] By adopting the above technical solution, after the injection mold completes the injection molding of the product, the hydraulic cylinder drives the actuating rod to slide away from the moving mold base. Since the driving part is installed on the mandrel and the driving part and the mandrel are arranged at an angle, the connection between the driving part and the mandrel moves away from the boss as the driving part slides. However, since the mandrel is restricted by the insert hole, the mandrel moves away from the boss along its own axial direction. The mandrel is disengaged from the moving mold. At this time, the injection mold is opened, and the mandrel is no longer subjected to the force of the moving mold, which avoids the mandrel from breaking and reduces the wear of the mandrel during the injection molding process.

[0009] Optionally, a slider is fixedly connected to the piston rod of the hydraulic cylinder. A guide groove is provided on the side of the slider away from the hydraulic cylinder. The guide groove and the side of the fixed mold base away from the moving mold base are inclined. The two ends of the guide groove pass through the slider. A limiting groove is provided at the bottom of the guide groove. The limiting groove and the guide groove are arranged in the same direction. The two ends of the limiting groove pass through the slider. The actuating rod also includes a through part and a limiting part. The through part is fixedly connected to the end of the embedded part away from the driving part. The through part passes through and slides in the guide groove. The limiting part is fixedly connected to the end of the through part away from the embedded part. The limiting part is embedded in the limiting groove. The limiting part abuts against the groove wall of the limiting groove near the guide groove. When the hydraulic cylinder drives the slider to slide, the actuating rod slides in a direction perpendicular to the sliding of the slider.

[0010] By adopting the above technical solution, the sliding connection between the actuating rod and the slider is achieved by inserting the through part into the guide groove and embedding the limiting part into the limiting groove. The limiting part abuts against the groove wall of the limiting groove near the guide groove to prevent the limiting part from disengaging from the limiting groove at the guide groove, thereby improving the stability of the sliding connection between the actuating rod and the slider. On the other hand, since the actuating rod is restricted by the fixed template and can only slide in the direction close to or away from the moving mold base, the sliding direction of the actuating rod on the slider is guided by the guide groove and the limiting groove. This allows the actuating rod to move away from the moving mold base when the hydraulic cylinder drives the slider to slide towards the side close to the hydraulic cylinder, thus improving the convenience of sliding the actuating rod by driving it with the hydraulic cylinder.

[0011] Optionally, a first through block is fixedly connected to the piston rod of the hydraulic cylinder. A first embedding block is integrally provided on the side of the first through block away from the hydraulic cylinder. A first through groove is provided on the side of the slider close to the hydraulic cylinder. A first embedding groove is provided at the bottom of the first through groove. The first through block passes through the first through groove. The first embedding block is embedded in the first embedding groove. The first embedding block abuts against the groove wall of the first embedding groove close to the first embedding block.

[0012] By adopting the above technical solution, the first through block is inserted into the first through groove, and the first insert block is inserted into the first insert groove, so as to fix the slider to the piston rod of the oil cylinder, so that the slider slides on the fixed mold base as the piston rod moves, thereby improving the stability of the fixed connection between the slider and the oil cylinder.

[0013] Optionally, it also includes a locking rod and a locking hole rod. The locking hole rod is fixedly connected to the moving mold base, the locking rod is slidably connected to the fixed mold base, and the locking rod is fixedly connected to the slider. The locking hole rod is provided with a locking hole. When the hydraulic cylinder drives the slider to slide towards the side close to the locking hole rod, the locking rod passes through the locking hole, and the fixed mold base and the moving mold base are locked and cannot be separated.

[0014] By adopting the above technical solution, the locking rod is inserted into the lock hole to lock the moving mold base and the fixed mold base, so that the fixed mold and the moving mold are locked and cannot be separated. This avoids damage to the mandrel when the mandrel is not detached from the moving mold during mold opening, thus improving the safety of the mandrel during the mold opening process. On the other hand, when the slider is driven by the hydraulic cylinder to slide away from the lock hole rod, the locking rod disengages from the lock hole, and the locking of the fixed mold base and the moving mold base is released. At this time, the actuating rod is guided by the slider to move away from the moving mold base, and the mandrel is driven by the driving part to detach from the moving mold. This ensures that the mandrel is not subjected to shearing force from the fixed mold and the moving mold during the mold opening process, thus improving the safety of the mandrel during the mold opening process.

[0015] Optionally, the fixed mold base is provided with a mounting groove on the side away from the moving mold base. The mounting groove is arranged along the sliding direction of the slider. The oil cylinder, the slider and the locking rod are all embedded in the mounting groove. Both sides of the slider are integrally provided with extensions, and the extensions abut against the groove wall of the mounting groove.

[0016] By adopting the above technical solution, the movement of the slider along the sliding direction perpendicular to itself is restricted by the extension abutting against the groove wall of the mounting groove, thereby improving the stability of the slider sliding connection to the fixed mold base.

[0017] Optionally, a limiting block is fixedly connected to the bottom of the mounting groove, and when the slider slides away from the oil cylinder, the slider abuts against the limiting block on the side closer to the oil cylinder.

[0018] By adopting the above technical solution, the sliding distance of the slider is limited by the limiting block to avoid the slider sliding a long distance away from the oil cylinder, which would cause the actuating rod to move a long distance closer to the moving mold base. This would cause the mandrel to squeeze the moving mold closer to the boss, thereby improving the service life of the mandrel.

[0019] Optionally, the sidewall of the end of the driving part away from the embedding part is arranged parallel to the moving direction of the actuating rod.

[0020] By adopting the above technical solution, the mandrel, as a vulnerable part in the injection mold, needs to be replaced periodically. The side wall of the drive unit away from the insert part is set parallel to the moving direction of the actuating bar, so that when the hydraulic cylinder drives the slider to slide a certain distance closer to itself, the drive unit disengages from the mandrel. This shortens the distance the slider needs to slide to disengage from the mandrel and improves the convenience of installing and disassembling the mandrel and the drive unit.

[0021] Optionally, a number of positioning pins are fixedly connected to the fixed mold, and the moving mold is provided with a number of positioning slots that are the same as the number of positioning pins. When the positioning pins are inserted into the positioning slots one by one, the fixed mold and the moving mold are completely fitted together.

[0022] By adopting the above technical solution, the positioning pin is inserted into the positioning groove to position the relative positions of the fixed mold and the moving mold, avoiding the misalignment of the fixed mold and the moving mold, which would lead to inconsistencies between the shape of the injection molded product and the expected shape. This improves the efficiency and stability of the fixed mold and the moving mold to meet and fit together for product injection molding.

[0023] Optionally, the fixed mold is provided with a flow channel for cooling water to flow through, and the embedded part is provided with a clearance groove to avoid the flow channel.

[0024] By adopting the above technical solution, the setting of the clearance groove ensures that there is no interference between the actuating rod and the flow channel, thereby improving the smoothness of the cooling water flow within the flow channel.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The mandrel is driven to slide by the hydraulic cylinder, thereby driving the mandrel to disengage from the moving mold, avoiding the mandrel from breaking due to the shearing force applied by the moving mold and the fixed mold, and reducing the wear of the mandrel during the injection molding process.

[0027] 2. The actuating bar is guided by the guide groove and the limiting groove, so that when the hydraulic cylinder drives the slider to slide, the actuating bar moves synchronously, which improves the convenience of sliding the actuating bar by driving it with the hydraulic cylinder.

[0028] 3. The first through block is inserted into the first through groove, and the first embedding block is embedded into the first embedding groove, so as to fix the slider to the piston rod of the oil cylinder, thereby improving the stability of the fixed connection between the slider and the oil cylinder. Attached Figure Description

[0029] Figure 1 This is a side view of an injection mold in related technologies.

[0030] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0031] Figure 3 This is a schematic diagram of the structure of an injection mold in an embodiment of this application.

[0032] Figure 4 This is an exploded view of an injection mold according to an embodiment of this application.

[0033] Figure 5 This is a side view of an injection mold according to an embodiment of this application.

[0034] Figure 6 yes Figure 5 A cross-sectional view along the BB direction.

[0035] Figure 7 This is an exploded view of the moving mold and the fixed mold in the embodiments of this application.

[0036] Figure 8 This is an exploded view of the core-pulling assembly and the fixed module in the embodiments of this application.

[0037] Figure 9 yes Figure 8 Enlarged diagram of section C.

[0038] Figure 10 yes Figure 8 Enlarged schematic diagram of section D in the middle.

[0039] Explanation of reference numerals in the attached drawings: 1. Fixed mold assembly; 11. Fixed mold base; 111. Mounting groove; 112. Limiting block; 113. Flow channel; 114. Locking rod; 1141. Second through block; 1142. Second insert block; 1143. Locking tongue; 12. Fixed mold; 121. Positioning pin; 122. Inserting hole; 2. Moving mold assembly; 21. Moving mold base; 211. Locking rod; 2111. Locking hole; 22. Moving mold; 221. Positioning groove; 222. Circular groove; 223. Boss; 224. Annular cavity 3. Core rod; 4. Core pulling assembly; 41. Hydraulic cylinder; 411. First through block; 412. First insert block; 42. Slider; 421. Extension; 422. First through groove; 423. First insert groove; 424. Guide groove; 425. Limiting groove; 426. Second through groove; 427. Second insert groove; 43. Actuating rod; 431. Insertion part; 4311. Clearance groove; 432. Through part; 433. Limiting part; 434. Driving part; 5. Mold cavity; 6. Hollow cavity. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 3-10 This application will be described in further detail.

[0041] This application discloses an injection mold.

[0042] Reference Figure 3 and Figure 4 The injection mold includes a fixed mold assembly 1, a movable mold assembly 2, a mandrel 3, and a core-pulling assembly 4. The fixed mold assembly 1 and the movable mold assembly 2 abut against each other to form a mold cavity 5 for injecting molten plastic. The mandrel 3 passes through the fixed mold assembly 1 and extends into the movable mold assembly 2. The core-pulling assembly 4 is fixedly connected to the side of the fixed mold assembly 1 away from the movable mold assembly 2 so that the mandrel 3 can be pulled out from the movable mold assembly 2 when mold opening is required.

[0043] Reference Figure 5 and Figure 6 The fixed mold assembly 1 includes a fixed mold base 11 and a fixed mold 12. The movable mold assembly 2 includes a movable mold base 21 and a movable mold 22. The movable mold base 21 abuts against the fixed mold base 11 to form a cavity 6 for mounting the fixed mold 12 and the movable mold 22. The movable mold 22 is fixedly connected to the movable mold base 21, and the fixed mold 12 is fixedly connected to the fixed mold base 11. The fixed mold 12 abuts against the movable mold 22 to form a mold cavity 5.

[0044] Reference Figure 6 and Figure 7 To facilitate the positioning of the relative positions of the fixed mold 12 and the moving mold 22, several positioning pins 121 are fixedly connected to the fixed mold 12. The moving mold 22 has the same number of positioning slots 221 as the positioning pins 121. Positioning is completed when the positioning pins 121 are respectively inserted into the positioning slots 221. The moving mold 22 has a circular groove 222 on the side near the fixed mold 12, and a boss 223 is fixedly connected to the bottom of the circular groove 222. The fixed mold 12 has an insert hole 122, in which the mandrel 3 is inserted and slides within the insert hole 122. One end of the mandrel 3 extends into the circular groove 222 and abuts against the boss 223 to cooperate with the moving mold 22 to form an annular cavity 224 that is injection molded into a ring.

[0045] Reference Figure 8 and Figure 9The core-pulling assembly 4 includes a hydraulic cylinder 41, a slider 42, and a lever 43. The fixed mold base 11 has a mounting groove 111 on the side away from the moving mold base 21, and both the hydraulic cylinder 41 and the slider 42 are embedded in the mounting groove 111. The hydraulic cylinder 41 is fixedly connected to the bottom of the mounting groove 111. The slider 42 slides within the mounting groove 111, and extensions 421 are integrally connected to both sides of the slider 42. The sides of the two extensions 421 away from the slider 42 respectively abut against the groove wall of the mounting groove 111 to restrict the slider 42 from moving in a direction perpendicular to its own sliding direction. The side of the slider 42 near the hydraulic cylinder 41 has a first through-groove 422, and the bottom of the first through-groove 422 has a first fitting groove 423. A first through-block 411 is fixedly connected to the piston rod of the hydraulic cylinder 41, and the first through-block 411 passes through the first through-groove 422. The first through block 411 is integrally connected to the first insert block 412 away from the cylinder 41. The first insert block 412 is embedded in the first insert groove 423. The side of the first insert block 412 near the cylinder 41 abuts against the groove wall of the first insert groove 423 near the first through groove 422, so that the slider 42 moves closer to or away from the cylinder 41 as the piston rod of the cylinder 41 extends and retracts. To prevent the slider 42 from sliding too far under the drive of the cylinder 41, a limit block 112 is fixedly connected to the bottom of the mounting groove 111. When the slider 42 slides away from the cylinder 41, the slider 42 abuts against the side of the limit block 112 near the cylinder 41.

[0046] Reference Figure 8 and Figure 10The actuating rod 43 includes an insert portion 431, a through portion 432, a limiting portion 433, and a driving portion 434. The insert portion 431 is inserted into and slides within the fixed mold 12 and the fixed mold base 11, and abuts against the fixed mold 12 so that the actuating rod 43 slides only in the direction approaching or away from the moving mold base 21. The fixed mold 12 has a flow channel 113 for cooling water to flow through, so as to accelerate the cooling of the plastic melt. The insert portion 431 has a clearance groove 4311 to avoid the flow channel 113. The slider 42 has a guide groove 424 on the side away from the oil cylinder 41. The guide groove 424 and the side of the fixed mold base 11 away from the moving mold base 21 are inclined, and the two ends of the guide groove 424 pass through the slider 42. The bottom of the guide groove 424 has a limiting groove 425, which is arranged in the same direction as the guide groove 424. The two ends of the limiting groove 425 pass through the slider 42. The through part 432 is fixedly connected to the side of the fitting part 431 near the slider 42 and passes through the guide groove 424. The limiting part 433 is fixedly connected to the side of the through part 432 away from the fitting part 431 and is fitted into the limiting groove 425. The side of the limiting part 433 near the through part 432 abuts against the groove wall of the limiting groove 425 near the guide groove 424, so that the actuating rod 43 slides and connects to the slider 42. The driving part 434 is fixedly connected to the side of the fitting part 431 away from the through part 432. The driving part 434 and the core rod 3 are inclined. The driving part 434 passes through and slides on the core rod 3. When the hydraulic cylinder 41 drives the slider 42 to slide closer to itself, the actuating rod 43 is guided by the limiting groove 425 and the guide groove 424 to slide away from the moving mold base 21. The mandrel 3 is driven by the driving part 434 to slide along its own axial direction. At this time, the mandrel 3 is disengaged from the moving mold 22. In order to facilitate the replacement of the mandrel 3 when it is damaged, the side wall of the driving part 434 away from the insert part 431 is arranged parallel to the moving direction of the actuating rod 43.

[0047] Reference Figure 8 and Figure 10To prevent the mandrel 3 from breaking prematurely when the mold opens before it detaches from the moving mold 22, a locking rod 114 is installed on the fixed mold base 11, and a locking hole rod 211 is fixedly connected to the moving mold base 21. The locking rod 114 is embedded in the mounting groove 111. The slider 42 has a second through groove 426 on the side near the locking rod 114, and the bottom of the second through groove 426 has a second embedding groove 427. A second through block 1141 is integrally connected to the side of the locking rod 114 near the slider 42, and the second through block 1141 passes through the second through groove 426. A second insert block 1142 is integrally connected to the side of the second through groove 426 away from the locking rod 114. The second insert block 1142 is embedded in the second insert groove 427 and abuts against the groove wall of the second insert groove 427 near the second through groove 426. This allows the locking rod 114 to slide synchronously with the slider 42 when the slider 42 is driven by the hydraulic cylinder 41 and slides into the mounting groove 111. A locking tongue 1143 is integrally connected to the side of the locking rod 114 away from the slider 42. The locking rod 211 has a locking hole 2111. When the locking rod 114 slides towards the side near the locking rod 2111, the locking tongue 1143 passes through the locking hole 2111, locking the fixed mold base 11 and the moving mold base 21 and preventing them from separating.

[0048] The implementation principle of an injection mold according to an embodiment of this application is as follows: When the slider 42 is driven by the oil cylinder 41 to move away from the locking hole rod 211, on the one hand, the actuating rod 43 is guided by the guide groove 424 and the limiting groove 425 and moves away from the moving mold base 21. At this time, the core rod 3 is driven by the driving part 434 and moves away from the boss 223 and disengages from the moving mold 22. On the other hand, the locking rod 114 slides away from the locking hole rod 211 as the slider 42 moves, and the locking tongue 1143 disengages from the locking hole 2111. At this time, the locking of the relative position of the fixed mold base 11 and the moving mold base 21 is released.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An injection mold, characterized in that: The assembly includes a moving mold base (21), a moving mold (22), a fixed mold base (11), a fixed mold (12), a mandrel (3), a lever (43), and a hydraulic cylinder (41). The moving mold base (21) abuts against the fixed mold base (11) to form a cavity (6) for mounting the moving mold (22) and the fixed mold (12). The moving mold (22) is fixedly connected to the moving mold base (21), and the fixed mold (12) is fixedly connected to the fixed mold base (11). The moving mold (22) abuts against the fixed mold (12) to form a cavity (6). The mold cavity (5) is formed to accommodate the injection of molten plastic. The fixed mold (12) has an insert hole (122) that communicates with the mold cavity (5). The mandrel (3) is inserted into and slides within the insert hole (122). The moving mold (22) has a circular groove (222) with a boss (223) fixedly connected to the bottom of the groove. The mandrel (3) extends into the circular groove (222) and abuts against the boss (223) to cooperate with the moving mold (22) to form an injection molded product. The annular cavity (224) is circular in shape. The actuating rod (43) includes an embedded part (431) and a driving part (434). The embedded part (431) is embedded in the fixed mold (12) and the fixed mold base (11) and slides in a direction close to or away from the moving mold base (21). One end of the embedded part (431) passes through the fixed mold base (11). The driving part (434) is fixedly connected to the other end of the embedded part (431). The driving part (434) passes through and slides on the core rod (3). The moving part (434) and the core rod (3) are inclined. The oil cylinder (41) is fixedly connected to the fixed mold base (11). The piston rod of the oil cylinder (41) is connected to one end of the actuating rod (43). When the actuating rod (43) is driven by the oil cylinder (41) to move away from the moving mold base (21), the core rod (3) is driven by the driving part (434) and slides away from the boss (223) along the axial direction of the core rod (3) and disengages from the moving mold (22).

2. The injection mold according to claim 1, characterized in that: A slider (42) is fixedly connected to the piston rod of the oil cylinder (41). A guide groove (424) is provided on the side of the slider (42) away from the oil cylinder (41). The guide groove (424) and the fixed mold base (11) are inclined on the side away from the moving mold base (21). The two ends of the guide groove (424) pass through the slider (42). A limiting groove (425) is provided at the bottom of the guide groove (424). The limiting groove (425) and the guide groove (424) are arranged in the same direction. The two ends of the limiting groove (425) pass through the slider (42). The actuating rod (43) also includes a through part (432) and a limiting part (433). The through part (432) is fixedly connected to the end of the embedded part (431) away from the driving part (434). The through part (432) passes through and slides in the guide groove (424). The limiting part (433) is fixedly connected to the end of the through part (432) away from the embedded part (431). The limiting part (433) is embedded in the limiting groove (425). The limiting part (433) abuts against the groove wall of the limiting groove (425) near the guide groove (424). When the oil cylinder (41) drives the slider (42) to slide, the actuating rod (43) slides in a direction perpendicular to the sliding direction of the slider (42).

3. The injection mold according to claim 2, characterized in that: A first through block (411) is fixedly connected to the piston rod of the oil cylinder (41). A first embedding block (412) is integrally provided on the side of the first through block (411) away from the oil cylinder (41). A first through groove (422) is provided on the side of the slider (42) close to the oil cylinder (41). A first embedding groove (423) is provided at the bottom of the first through groove (422). The first through block (411) passes through the first through groove (422). The first embedding block (412) is embedded in the first embedding groove (423). The first embedding block (412) abuts against the groove wall of the first embedding groove (423) close to the first embedding block (412).

4. The injection mold according to claim 2, characterized in that: It also includes a locking rod (114) and a locking hole rod (211). The locking hole rod (211) is fixedly connected to the moving mold base (21), and the locking rod (114) is slidably connected to the fixed mold base (11). The locking rod (114) is fixedly connected to the slider (42). The locking hole rod (211) is provided with a locking hole (2111). When the oil cylinder (41) drives the slider (42) to slide towards the side close to the locking hole rod (211), the locking rod (114) passes through the locking hole (2111), and the fixed mold base (11) and the moving mold base (21) are locked and cannot be separated.

5. An injection mold according to claim 4, characterized in that: The fixed mold base (11) is provided with a mounting groove (111) on the side away from the moving mold base (21). The mounting groove (111) is arranged along the sliding direction of the slider (42). The oil cylinder (41), the slider (42) and the locking rod (114) are all embedded in the mounting groove (111). Both sides of the slider (42) are integrally provided with extensions (421), and the extensions (421) abut against the groove wall of the mounting groove (111).

6. The injection mold according to claim 5, characterized in that: The bottom of the mounting groove (111) is fixedly connected to a limiting block (112). When the slider (42) slides away from the oil cylinder (41), the slider (42) abuts against the limiting block (112) on the side close to the oil cylinder (41).

7. An injection mold according to claim 1, characterized in that: The sidewall of the drive unit (434) at the end away from the embedded part (431) is arranged parallel to the moving direction of the actuating rod (43).

8. The injection mold according to claim 1, characterized in that: The fixed mold (12) is fixedly connected with a number of positioning posts (121), and the moving mold (22) is provided with a number of positioning slots (221) that are the same as the number of positioning posts (121). When the positioning posts (121) are inserted into the positioning slots (221) one by one, the fixed mold (12) and the moving mold (22) are completely fitted together.

9. An injection mold according to claim 1, characterized in that: The fixed mold (12) is provided with a flow channel (113) through which cooling water flows, and the embedded part (431) is provided with a relief groove (4311) to avoid the flow channel (113).

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