A mold frame for injection mold capable of quickly replacing mold core

Abstract

The invention discloses a mold frame for an injection mold with a quickly replaceable mold core, belonging to the technical field of injection mold equipment; a mold frame for an injection mold with a quickly replaceable mold core comprises a movable mold, a fixed mold and a locking assembly; the movable mold and the fixed mold are arranged opposite to each other, the fixed mold is fixedly arranged on one side of the movable mold, and a driving rod is horizontally arranged on the end surface of the movable mold so that the movable mold can move horizontally toward the fixed mold side; the movable mold comprises a movable mold seat and a movable mold core, and the fixed mold comprises a fixed mold seat and a fixed mold core; locking pieces are arranged on the outer peripheral sides of the movable mold core and the fixed mold core, and locking grooves corresponding to the positions of the locking pieces are arranged on the movable mold seat and the fixed mold seat, and the locking piece and the locking groove are connected by screws so that the movable mold seat and the movable mold core can be nested and clamped, and the fixed mold seat and the fixed mold core can be nested and clamped; the positioning accuracy requirements and installation steps during installation can be reduced, the movable mold and the fixed mold can be quickly installed, and the installation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of injection mold equipment, and more specifically, relates to an injection mold frame with a mold core that can be quickly replaced. Background Art

[0002] At present, the development trend of injection molds is mainly towards high-precision and high-tech. The process of injection molding can be roughly divided into several processes: mold closing, injection, pressure holding, cooling, mold opening, product removal, etc. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] For example, the injection mold for a center control panel disclosed in the patent document with patent number CN115091705B (application date August 25, 2022) includes: a connecting assembly, including a positioning member, a locking member and a snap-in member, the positioning member and the locking member are horizontally snap-connected and limited; a male mold plate, including a male mold core, a corresponding mold base and a sealing plate, and the four corners of the outer side of the male mold core and the outer side of the mold base are horizontally snap-connected and limited by the snap-in member. The snap-in member can be used to clamp and limit the female mold core, the snap-in member and the mold base at the four corners, and the horizontal limit of the positioning member and the locking member can also limit the axial position of the snap-in member, so as to realize a method of using horizontal snap connection to reduce the axial wear of the injection mold, and also realize the quick disassembly and assembly of the injection mold; However, the male and female mold cores lack a guiding mechanism when inserted into the corresponding templates. Four sets of clips need to be aligned with the corners of the mold base to complete the installation. This requires high positioning accuracy and numerous installation steps. The positioning parts need to be inserted multiple times. If there is a deviation, the mold core cannot be installed into the mold base and needs to be re-positioned and inserted, which seriously affects the installation efficiency. Therefore, a mold frame for an injection mold with a quick-change mold core and an installation guide mechanism is needed to solve the above technical problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mold frame for an injection mold with a quickly replaceable mold core, which can reduce the positioning accuracy requirements and installation steps during installation, quickly install the movable mold and the fixed mold, and improve the installation efficiency.

[0005] The present invention discloses a mold frame for an injection mold with a mold core that can be quickly replaced, which includes a movable mold, a fixed mold and a locking assembly. The movable mold and the fixed mold are arranged opposite to each other, the fixed mold is fixedly arranged on one side of the movable mold, and a driving rod is horizontally arranged on the end face of the movable mold so that the movable mold can move horizontally toward the fixed mold side. The movable mold includes a movable mold base and a movable mold core, and the fixed mold includes a fixed mold base and a fixed mold core. Locking pieces are arranged on the outer peripheral sides of the movable mold core and the fixed mold core, and locking grooves corresponding to the positions of the locking pieces are arranged on the movable mold base and the fixed mold base, and the locking pieces and the locking grooves are connected by screws so that the movable mold base and the movable mold core can be nested and clamped, and the fixed mold base and the fixed mold core can be nested and clamped.

[0006] As a further improvement of the present invention, the locking member includes a guide block, a first locking block and a second locking block. The locking groove includes a guide groove, a first locking groove and a second locking groove. A guide block is provided on one side surface of the movable mold core or the fixed mold core, and a group of first locking blocks and second locking blocks are fixedly provided at each of its four corners. The first locking block is provided on the upper side of the second locking block, and the lower side surface of the first locking block is connected to the upper side surface of the second locking block to form a step surface protruding outward. A through hole is provided on the second locking block. A locking hole coaxial with the through hole is provided on the side wall of the movable mold core or the fixed mold core.

[0007] As a further improvement of the present invention, the movable mold further comprises a movable die block which is fixedly arranged on the surface of the movable mold core facing outwards and protrudes outwards so that the movable mold and the fixed mold can form a closed cavity when the movable mold and the fixed mold are closed.

[0008] As a further improvement of the present invention, it also includes an ejection assembly. The ejection assembly includes an ejector pin, an ejector plate, an ejector rod and a base. A penetrating sliding cavity is provided on the movable mold core and the movable mold block, and the ejector pin is arranged in the sliding cavity, and the ejector pin is slidably connected to the sliding cavity. One end of the ejector pin extends out of the outer side of the movable mold, and an ejector spring is sleeved on the outer side. One end of the ejector pin is fixedly connected to the surface of the ejector plate, and the other side of the ejector plate is connected to the ejector rod. A bottom plate is fixedly arranged on one side of the ejector rod, and a base is fixedly arranged on the side of the bottom plate close to the ejector rod, and the base and the ejector rod are located on the same axis. When demolding, the driving rod drives the movable mold to move toward the side of the bottom plate, and the bottom end of the ejector rod abuts against the base, compressing the ejector spring, and the ejector pin extends outward to eject the injection molded product.

[0009] As a further improvement of the present invention, the guide block is a convex structure, and the length of the guide block is equal to the thickness of the movable mold core or the fixed mold core. The first locking groove is connected to the second locking groove up and down, the first locking block is matched with the side wall of the first locking groove, and the second locking block is matched with the side wall of the second locking groove to cooperate to form a step limit.

[0010] As a further improvement of the present invention, the fixed mold further comprises a fixed mold cavity, which is opened at the center of the fixed mold core and extends into the fixed mold core. A gate is arranged at the center of the fixed mold cavity, which passes through the fixed mold core, and one end of the gate is connected to an external injection molding device for injecting heated and liquefied plastic between the movable mold and the fixed mold.

[0011] As a further improvement of the present invention, the fixed mold further comprises a sealing plate, which is fixedly arranged on one side of the fixed mold base and has a filling nozzle, one end of which is connected to the inside of the fixed mold and the other end of which is connected to an external injection molding device for injecting heated and liquefied plastic into the fixed mold.

[0012] As a further improvement of the present invention, it also includes a cleaning component, which is arranged between the movable mold and the fixed mold. The cleaning component includes a transverse guide rail, a spray module and a wiping module. The spray module and the wiping module are respectively slidably arranged on both sides of the transverse guide rail, the spray module is used to spray the cleaning agent on the surface of the movable mold or the fixed mold, and the wiping module is used to wipe the surface of the movable mold or the fixed mold sprayed with the cleaning agent. When the movable mold and the fixed mold are in a mold closing state, the spray module and the wiping module are respectively located at both ends of the transverse guide rail so that the edges of the movable mold and the fixed mold do not contact the cleaning component.

[0013] As a further improvement of the present invention, the spray module includes a first lifting rod, a nozzle and a transmission tube. The upper end of the first lifting rod is slidably connected to the transverse guide rail, and the lower end is fixedly connected to the nozzle. One end of the transmission tube is connected to the nozzle, and the other end is connected to the external power device, so that the nozzle can at least spray the cleaning agent to any side of the movable mold or the fixed mold. The wiping module includes a second lifting rod and a wiping head. The upper end of the second lifting rod is slidably connected to the transverse guide rail, and the lower end is fixedly connected to the wiping head, and the wiping head is used to wipe the surface of the movable mold or the fixed mold sprayed with the cleaning agent. The first lifting rod and the second lifting rod both have the ability to rise and fall independently to drive the nozzle and the wiping head to move respectively.

[0014] As a further improvement of the present invention, the nozzle includes output ends symmetrically arranged on the left and right, each output end facing the surface of the movable mold and the fixed mold respectively, so as to synchronously spray the cleaning agent to both sides. The wiping head includes wiping ends symmetrically arranged on the left and right, and when wiping, the distance between the movable mold and the fixed mold matches the length of the wiping head, so that the wiping head can synchronously wipe the surfaces of the movable mold and the fixed mold.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the movable mold, fixed mold and locking components, when installing the fixed mold core or the movable mold core, the fixed mold core or the movable mold core is inserted and installed through the guide block and the guide groove, and then the mold core and the mold base are directly installed and connected through the thread. There is no need to insert the positioning parts multiple times, which reduces the number of installation components. When disassembling, there is no need to take out multiple positioning parts one by one, which can reduce the positioning accuracy requirements and installation steps during installation, quickly install the movable mold and the fixed mold, and improve the installation efficiency.

[0016] 2. By setting up a cleaning component, the fixed mold core and the movable mold core are sprayed with cleaning agent at the same time, and then the surfaces of the two are wiped synchronously at the same time, the fixed mold core and the movable mold core can be cleaned at one time. It is possible to directly clean the glue stains formed on the mold surface before and after the mold is changed. The cleaning agent can evaporate directly after spraying and wiping, and there is no need to clean the mold after unmolding, thereby improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention when the mold is closed; Figure 3 It is a structural schematic diagram of the movable mold and the ejection assembly of the present invention; Figure 4 It is another structural schematic diagram of the movable mold of the present invention; Figure 5 It is a structural schematic diagram of the fixed mold of the present invention; Figure 6 It is another structural schematic diagram of the fixed mold of the present invention; Figure 7 It is a schematic diagram of the structure of the cleaning component of the present invention; Figure 8 It is a schematic diagram of the overall structure of the cleaning component of the present invention.

[0018] Description of the numbers in the figure: Movable mold 1, movable mold base 11, movable mold core 12, movable mold block 13, driving rod 14, fixed mold 2, fixed mold base 21, fixed mold core 22, sealing plate 23, fixed mold cavity 24, filling nozzle 25, gate 26, locking assembly 3, guide groove 31, guide block 32, first locking groove 33, first locking block 34, second locking groove 35, second locking block 36, locking hole 37, ejector assembly 4, ejector pin 41, ejector spring 42, ejector plate 43, ejector rod 44, bottom plate 45, base 46, cleaning assembly 5, transverse guide rail 51, first lifting rod 52, nozzle 53, second lifting rod 54, wiping head 55. DETAILED DESCRIPTION

[0019] Specific embodiment 1: Please refer to Figure 1-Figure 6A mold frame for an injection mold with a quickly replaceable mold core comprises a movable mold 1, a fixed mold 2 and a locking assembly 3. The movable mold 1 and the fixed mold 2 are arranged opposite to each other, and the fixed mold 2 is fixedly arranged on one side of the movable mold 1. A driving rod 14 is horizontally arranged on the end surface of the movable mold 1 so that the movable mold 1 can move horizontally toward the side of the fixed mold 2. The movable mold 1 comprises a movable mold base 11 and a movable mold core 12, and the fixed mold 2 comprises a fixed mold base 21 and a fixed mold core 22. Locking pieces are arranged on the outer peripheral sides of the movable mold core 12 and the fixed mold core 22, and locking grooves corresponding to the positions of the locking pieces are arranged on the movable mold base 11 and the fixed mold base 21, and the locking pieces and the locking grooves are connected by screws so that the movable mold base 11 and the movable mold core 12 can be nested and clamped, and the fixed mold base 21 and the fixed mold core 22 can be nested and clamped.

[0020] The locking member includes a guide block 32, a first locking block 34 and a second locking block 36. The locking groove includes a guide groove 31, a first locking groove 33 and a second locking groove 35. A guide block 32 is provided on one side of the movable mold core 12 or the fixed mold core 22, and a group of first locking blocks 34 and second locking blocks 36 are fixedly provided at each of its four corners. The first locking block 34 is provided on the upper side of the second locking block 36, and the lower side surface of the first locking block 34 is connected to the upper side surface of the second locking block 36 to form a stepped surface protruding outward. A through hole is provided on the second locking block 36. A locking hole 37 coaxial with the through hole is provided on the side wall of the movable mold core 12 or the fixed mold core 22.

[0021] In this embodiment, the guide block 32 is a convex structure, and the length of the guide block 32 is equal to the thickness of the movable mold core 12 or the fixed mold core 22. The first locking groove 33 is connected to the second locking groove 35 in vertical communication, the first locking block 34 is fitted and matched with the side wall of the first locking groove 33, and the second locking block 36 is fitted and matched with the side wall of the second locking groove 35 to form a step limit.

[0022] The movable mold 1 further comprises a movable die block 13. The movable die block 13 is fixedly arranged on the surface of the movable mold core 12 facing outwards, and the movable die block 13 protrudes outwards, so that the movable mold 1 and the fixed mold 2 can form a closed cavity when the molds are closed.

[0023] The fixed mold 2 also includes a sealing plate 23 and a fixed mold cavity 24. The fixed mold cavity 24 is opened at the center of the fixed mold core 22, and the fixed mold cavity 24 extends into the fixed mold core 22. A gate 26 is arranged at the center of the fixed mold cavity 24, and the gate 26 passes through the fixed mold core 22. One end of the gate 26 is connected to an external injection molding device, and is used to inject heated and liquefied plastic into the space between the movable mold 1 and the fixed mold 2. The sealing plate 23 is fixedly arranged on one side of the fixed mold base 21, and a filling nozzle 25 is arranged on the sealing plate 23. One end of the filling nozzle 25 is connected to the inside of the fixed mold 2, and the other end is connected to the external injection molding device, and is used to inject heated and liquefied plastic into the inside of the fixed mold 2.

[0024] It should be noted that a cooling pipeline is arranged inside the movable mold 2, and the cooling pipeline can be adaptively arranged according to the locking assembly 3, which will not affect the arrangement of the internal cooling pipeline. This belongs to the existing conventional technical means and will not be described in detail here.

[0025] It also includes an ejector assembly 4. The ejector assembly 4 includes an ejector pin 41, an ejector plate 43, an ejector rod 44 and a base 46. A penetrating sliding cavity is provided on the movable mold core 12 and the movable mold block 13, and the ejector pin 41 is arranged in the sliding cavity, and the ejector pin 41 is slidably connected to the sliding cavity. One end of the ejector pin 41 extends out of the outer side of the movable mold 1, and an ejector spring 42 is sleeved on the outer side. One end of the ejector pin 41 is fixedly connected to the surface of the ejector plate 43, and the other side of the ejector plate 43 is connected to the ejector rod 44. A bottom plate 45 is fixedly arranged on one side of the ejector rod 44 at intervals, and a base 46 is fixedly arranged on the side of the bottom plate 45 close to the ejector rod 44, and the base 46 and the ejector rod 44 are located on the same axis. When demolding, the driving rod 14 drives the movable mold 1 to move toward the side of the bottom plate 45, and the bottom end of the ejector rod 44 abuts against the base 46, compressing the ejector spring 42, and the ejector pin 41 extends outward to eject the injection molded product.

[0026] Working process: It should be noted that the installation principle of the fixed mold core 22 is the same as that of the movable mold core 12. The installation process of the movable mold core 12 is taken as an example here for explanation; first, the movable mold core 12 is inserted into the movable mold base 11, wherein the guide block 32 is fitted with the guide groove 31 to guide the movement of the movable mold core 12, and at the same time, the first locking block 34 is fitted with the side wall of the first locking groove 33, and the second locking block 36 is fitted with the side wall of the second locking groove 35 to cooperate to form a step limit; the through hole and the locking hole 37 are arranged on the same axis, and the movable mold core 12 and the movable mold base 11 are connected with screws; when the fixed mold 2 and the movable mold 1 are closed for injection cooling, the product is ejected by the ejection assembly 4.

[0027] Specific embodiment 2: Please refer to Figure 7-Figure 8 A mold frame for an injection mold with a quickly replaceable mold core is disclosed, and the similarities with the specific embodiment 1 are not repeated here, and the difference lies in that it also includes a cleaning component 5.

[0028] The cleaning assembly 5 is arranged between the movable mold 1 and the fixed mold 2. The cleaning assembly 5 includes a transverse guide rail 51, a spray module and a wiping module. The spray module and the wiping module are respectively slidably arranged on both sides of the transverse guide rail 51, the spray module is used to spray the cleaning agent on the surface of the movable mold 1 or the fixed mold 2, and the wiping module is used to wipe the surface of the movable mold 1 or the fixed mold 2 sprayed with the cleaning agent. When the movable mold 1 and the fixed mold 2 are in a mold-closing state, the spray module and the wiping module are respectively located at both ends of the transverse guide rail 51, so that the edges of the movable mold 1 and the fixed mold 2 do not contact the cleaning assembly 5.

[0029] It should be noted that the cleaning agent in this embodiment is a general glue removing cleaning agent, which is a cleaning agent that can be directly purchased on the market. The cleaning agent contains an organic solvent, is volatile, and has no residue after wiping.

[0030] The spray module includes a first lifting rod 52, a nozzle 53 and a transmission tube. The upper end of the first lifting rod 52 is slidably connected to the transverse guide rail 51, and the lower end is fixedly connected to the nozzle 53. One end of the transmission tube is connected to the nozzle 53, and the other end is connected to the external power device, so that the nozzle 53 can at least spray the cleaning agent to any side of the movable mold 1 or the fixed mold 2. The wiping module includes a second lifting rod 54 and a wiping head 55. The upper end of the second lifting rod 54 is slidably connected to the transverse guide rail 51, and the lower end is fixedly connected to the wiping head 55, and the wiping head 55 is used to wipe the surface of the movable mold 1 or the fixed mold 2 sprayed with the cleaning agent. The first lifting rod 52 and the second lifting rod 54 both have the ability to rise and fall independently to drive the nozzle 53 and the wiping head 55 to move respectively.

[0031] Specific embodiment three: A mold frame for an injection mold with a quickly replaceable mold core, the same points as the specific embodiment two are not repeated here, and the difference is that the nozzle 53 and the wiper head 55 can work on the fixed mold 2 and the movable mold 1 at the same time.

[0032] The nozzle 53 includes output ends that are symmetrically arranged on the left and right sides, and each output end is respectively facing the surface of the movable mold 1 and the fixed mold 2 to synchronously spray the cleaning agent to both sides. The wiping head 55 includes wiping ends that are symmetrically arranged on the left and right sides. When wiping, the distance between the movable mold 1 and the fixed mold 2 matches the length of the wiping head 55, so that the wiping head 55 can synchronously wipe the surfaces of the movable mold 1 and the fixed mold 2.

[0033] The fixed mold core 22 and the movable mold core 12 are sprayed with cleaning agent at the same time, and then the surfaces of the two are wiped synchronously at the same time. The fixed mold core 22 and the movable mold core 12 are cleaned at one time, and the glue stains formed on the mold surface before and after the mold operation is replaced can be cleaned directly. The cleaning agent can evaporate directly after spraying and wiping, and there is no need to clean the mold after demolding, which avoids delays in production progress and improves cleaning efficiency and production efficiency.

[0034] Working process: When the product processing is completed and the fixed mold 2 and the movable mold 1 are separated, the cleaning component 5 is started to clean the mold surface, and the driving rod 14 drives the movable mold 1 to move close to the cleaning component 5, while ensuring that the wiping head 55 can abut against the movable mold 1 and the fixed mold 2 at the same time. First, the transverse guide rail 51 drives the first lifting rod 52 to move left and right, and at the same time drives the nozzle 52 to spray the cleaning agent on the surface of the movable mold 1 and the fixed mold 2, so that the cleaning agent is evenly distributed on the surfaces of the two; then the guide rail 51 drives the second lifting rod 54 to move left and right, and at the same time drives the wiping head 55 to wipe the surfaces of the movable mold 1 and the fixed mold 2.

Claims

1. A mold frame for an injection mold capable of quickly replacing a mold core, characterized in that: The invention comprises a movable mold (1), a fixed mold (2) and a locking assembly (3); the movable mold (1) and the fixed mold (2) are arranged opposite to each other, the fixed mold (2) is fixedly arranged on one side of the movable mold (1), and a driving rod (14) is horizontally arranged on the end surface of the movable mold (1) so that the movable mold (1) can move horizontally toward the side of the fixed mold (2); the movable mold (1) comprises a movable mold base (11) and a movable mold core (12), and the fixed mold (2) comprises a fixed mold base (21) and a fixed mold core (22); locking pieces are arranged on the outer peripheral side surfaces of the movable mold core (12) and the fixed mold core (22), and locking grooves corresponding to the positions of the locking pieces are arranged on the movable mold base (11) and the fixed mold base (21), and the locking pieces and the locking grooves are connected by screws so that the movable mold base (11) and the movable mold core (12) can be nested and clamped, and the fixed mold base (21) and the fixed mold core (22) can be nested and clamped.

2. The mold frame for an injection mold with a quickly replaceable mold core according to claim 1, characterized in that: The locking member comprises a guide block (32), a first locking block (34) and a second locking block (36); the locking groove comprises a guide groove (31), a first locking groove (33) and a second locking groove (35); a guide block (32) is arranged on one side surface of the movable mold core (12) or the fixed mold core (22); a group of first locking blocks (34) and second locking blocks (36) are fixedly arranged at each of the four corners; the first locking block (34) is arranged on the upper side of the second locking block (36); the lower side surface of the first locking block (34) is connected to the upper side surface of the second locking block (36) to form a stepped surface protruding outward; the second locking block (36) is provided with a through hole; and a locking hole (37) coaxial with the through hole is provided on the side wall of the movable mold core (12) or the fixed mold core (22).

3. The mold frame for an injection mold with a quickly replaceable mold core according to claim 1, characterized in that: The movable mold (1) further comprises a movable die block (13); the movable die block (13) is fixedly arranged on the surface of the movable mold core (12) facing outwards, and the movable die block (13) protrudes outwards, so that the movable mold (1) and the fixed mold (2) can form a closed cavity when the molds are closed.

4. The mold frame for an injection mold with a quickly replaceable mold core according to claim 3, characterized in that: The mold assembly (4) further comprises an ejector assembly (4); the ejector assembly (4) comprises an ejector pin (41), an ejector plate (43), an ejector rod (44) and a base (46); a sliding cavity extending therethrough is provided on the movable mold core (12) and the movable mold block (13); the ejector pin (41) is arranged in the sliding cavity, and the ejector pin (41) is slidably connected to the sliding cavity; one end of the ejector pin (41) extends out of the movable mold (1), and an ejector spring (42) is sleeved on the outer side; one end of the ejector pin (41) is fixedly connected to the surface of the ejector plate (43); the ejector plate (44) is 3) the other side is connected to the ejector rod (44); a bottom plate (45) is fixedly arranged at intervals on one side of the ejector rod (44); a base (46) is fixedly arranged on the side of the bottom plate (45) close to the ejector rod (44); the base (46) and the ejector rod (44) are located on the same axis; when demoulding, the driving rod (14) drives the movable mold (1) to move toward the side of the bottom plate (45), the bottom end of the ejector rod (44) abuts against the base (46), compresses the ejector spring (42), and the ejector pin (41) extends outward to eject the injection molded product.

5. The mold frame for an injection mold with a quickly replaceable mold core according to claim 2, characterized in that: The guide block (32) is a convex structure, and the length of the guide block (32) is equal to the thickness of the movable mold core (12) or the fixed mold core (22); the first locking groove (33) and the second locking groove (35) are connected up and down, the first locking block (34) is fitted and matched with the side wall of the first locking groove (33), and the second locking block (36) is fitted and matched with the side wall of the second locking groove (35) to form a step limit.

6. The mold frame for an injection mold with a quickly replaceable mold core according to claim 1, characterized in that: The fixed mold (2) further comprises a fixed mold cavity (24), which is opened at the center of the fixed mold core (22) and extends into the interior of the fixed mold core (22); a gate (26) is arranged at the center of the fixed mold cavity (24), the gate (26) passes through the fixed mold core (22), and one end of the gate (26) is connected to an external injection molding device for injecting heated liquefied plastic into between the movable mold (1) and the fixed mold (2).

7. The mold frame for an injection mold with a quickly replaceable mold core according to claim 1, characterized in that: The fixed mold (2) further comprises a sealing plate (23) which is fixedly arranged on one side of the fixed mold base (21). A filling nozzle (25) is provided on the sealing plate (23); one end of the filling nozzle (25) is connected to the interior of the fixed mold (2), and the other end of the filling nozzle (25) is connected to an external injection molding device, and is used for injecting heated and liquefied plastic into the interior of the fixed mold (2).

8. The mold frame for an injection mold with a quickly replaceable mold core according to claim 1, characterized in that: The invention also comprises a cleaning component (5), which is arranged between the movable mold (1) and the fixed mold (2); the cleaning component (5) comprises a transverse guide rail (51), a spray module and a wiping module; the spray module and the wiping module are respectively slidably arranged on both sides of the transverse guide rail (51); the spray module is used to spray a cleaning agent onto the surface of the movable mold (1) or the fixed mold (2); and the wiping module is used to wipe the surface of the movable mold (1) or the fixed mold (2) sprayed with the cleaning agent; when the movable mold (1) and the fixed mold (2) are in a mold closing state, the spray module and the wiping module are respectively located at both ends of the transverse guide rail (51) so that the edges of the movable mold (1) and the fixed mold (2) do not contact the cleaning component (5).

9. The mold frame for an injection mold with a quickly replaceable mold core according to claim 8, characterized in that: The spray module comprises a first lifting rod (52), a nozzle (53) and a transmission pipe; the upper end of the first lifting rod (52) is slidably connected to the transverse guide rail (51), and the lower end is fixedly connected to the nozzle (53); one end of the transmission pipe is connected to the nozzle (53), and the other end is connected to an external power device, so that the nozzle (53) can at least spray a cleaning agent to any one side of the movable mold (1) or the fixed mold (2); the wiping module comprises a second lifting rod (54) and a wiping head (55); the upper end of the second lifting rod (54) is slidably connected to the transverse guide rail (51), and the lower end is fixedly connected to the wiping head (55), and the wiping head (55) is used to wipe the surface of the movable mold (1) or the fixed mold (2) sprayed with the cleaning agent; the first lifting rod (52) and the second lifting rod (54) both have the ability to be lifted and lowered independently, so as to drive the nozzle (53) and the wiping head (55) to move respectively.

10. The mold frame for an injection mold with a quickly replaceable mold core according to claim 9, characterized in that: The nozzle (53) includes output ends that are symmetrically arranged on the left and right, each output end facing the surface of the movable mold (1) and the fixed mold (2) respectively, so as to synchronously spray the cleaning agent to both sides; the wiping head (55) includes wiping ends that are symmetrically arranged on the left and right, and when wiping, the distance between the movable mold (1) and the fixed mold (2) matches the length of the wiping head (55), so that the wiping head (55) can synchronously wipe the surfaces of the movable mold (1) and the fixed mold (2).

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