A refrigerator accessory injection mold facilitating replacement of a core block

Abstract

The present application relates to injection mold technical field, specifically to a kind of refrigerator fittings injection mold of core block convenient to replace, including mould base assembly and the movable mould core and fixed mould core of detachable setting on mould base assembly, further include: ejector pin driven mechanism, it is set on movable mould core, for driven push injection product demoulding;Ejector pin driving mechanism, it is set on mould base assembly, for with ejector pin driven mechanism connection and driven drive ejector pin driven mechanism action.This application is detachably set on mould base assembly by locking mechanism to movable mould core, the quick replacement of movable mould core is realized, while ejector pin is set as the structure of ejector pin driven mechanism, ejector pin driving mechanism combination, the length, position and quantity of ejector pin driven mechanism can follow the movable mould core design of different cavity, and ejector pin driving mechanism can be adaptively adjusted according to the position of ejector pin driven mechanism on different movable mould core, and after the connection of the two, ejector pin driven mechanism is driven by ejector pin driving mechanism to demoulding.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to an injection mold for refrigerator parts that facilitates the replacement of the core block. Background Technology

[0002] Injection molding is a processing method used for mass production of plastic parts. Specifically, it involves injecting molten plastic under high pressure into the cavity of an injection mold using an injection molding machine. After cooling and solidification, the molded product is obtained. This production method is now widely used in the production of plastic parts for refrigerators. Currently, to reduce costs and improve production efficiency, a common method is to use a shared mold base and change different mold cores to achieve rapid production of different products.

[0003] For example, patent CN216465918U discloses a mold with a replaceable mold core, including a mold frame assembly and a detachable mold core assembly. The mold core assembly is horizontally slidably mounted on the mold frame assembly. The mold frame assembly includes an upper mold frame and a lower mold frame arranged opposite each other. The mold core assembly includes an upper mold core and a lower mold core arranged opposite each other. The upper mold core is slidably mounted on the side of the upper mold frame facing the lower mold frame, and the lower mold core is slidably connected to the side of the lower mold frame facing the upper mold frame. The upper mold frame is provided with a positioning component for fixing the sliding position of the upper mold core, and the lower mold frame is also provided with a positioning component for fixing the sliding position of the lower mold core. The mold core is detachably mounted on the mold frame assembly through the positioning components.

[0004] In the prior art of the aforementioned patent, the molded product is demolded by ejecting it with ejector pins. However, the length, working position, and number of ejector pins are fixed. Since the mold core is replaceable, different cavities of the mold core have different requirements for the length, working position, and number of ejector pins. When the mold core is replaced, there is a problem that the ejector pins are difficult to adapt to the mold cores of different cavities. Therefore, there is an urgent need for a refrigerator accessory injection mold that is easy to replace the core block to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an injection mold for refrigerator parts that facilitates the replacement of the core, thereby overcoming the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a refrigerator accessory injection mold for easy replacement of the core block, comprising a mold frame assembly and detachable movable and fixed mold cores disposed on the mold frame assembly, further comprising: an ejector pin driven mechanism disposed on the movable mold core for being driven to push the injection molded product out of the mold; an ejector pin driving mechanism disposed on the mold frame assembly for being connected to the ejector pin driven mechanism and driven to drive the ejector pin driven mechanism to move; the ejector pin driving mechanism and the ejector pin driven mechanism are detachably connected;

[0007] The ejector pin drive mechanism includes a connecting component for connecting the ejector pin driven mechanism and the ejector pin drive mechanism; a power component for generating power to drive the ejector pin driven mechanism; and a transmission component for transmitting power to the ejector pin driven mechanism.

[0008] After the ejector drive mechanism is connected to the ejector driven mechanism through the connecting component, the power component is driven to generate power, and the power is transmitted to the ejector driven mechanism through the transmission component, driving the ejector driven mechanism to push the injection molded product to demold.

[0009] Preferably, the mold frame assembly includes a moving mold plate and a fixed mold plate. The moving mold core is detachably mounted on the moving mold plate through a set of locking mechanisms, and the fixed mold core is detachably mounted on the fixed mold plate through another set of locking mechanisms.

[0010] Preferably, the ejector pin driven mechanism includes a driven ejector rod, which is movably mounted on the moving mold core, and the driven ejector rod is driven to move along its axial direction.

[0011] Preferably, the transmission assembly includes a drive tube, which is coaxially arranged with the driven push rod. A piston push rod is installed inside the drive tube, and the piston push rod is driven to push the driven push rod to move along its axial direction.

[0012] Preferably, the transmission component further includes a connecting pipe, one end of which is fixedly connected to the power component, and the other end is rotatably connected to the drive pipe.

[0013] Preferably, the power assembly includes a fixedly installed extrusion cylinder and an extrusion piston rod fitted inside it. The extrusion cylinder is filled with hydraulic oil, and the extrusion piston rod is driven to extrude the hydraulic oil inside the extrusion cylinder.

[0014] Preferably, the mold frame assembly further includes a fixed plate that is fixedly installed and a push plate that is movably installed, the push plate being driven to move the extrusion piston rod.

[0015] Preferably, the connecting assembly includes an adjusting seat, the bottom of which is fixedly connected to an elastic snap-fit ​​seat for snapping and limiting the drive tube.

[0016] Preferably, the adjusting seat is provided with a push rod control assembly located at the top of the drive tube, which is used to control the number of piston push rods that are open.

[0017] Preferably, after the drive tube is snapped onto the elastic snap-fit ​​seat, when the drive tube rotates axially, it can be retracted by pushing the push rod control assembly through one of the sets of piston push rods.

[0018] In the above technical solution, the beneficial effects of the present invention are: the mold core is detachably set on the mold frame assembly by the locking mechanism, so as to realize the quick replacement of the mold core. At the same time, the ejector pin is set as a combination of ejector pin driven mechanism and ejector pin driving mechanism. The length, position and number of ejector pin driven mechanism can follow the mold core design of different cavities. The ejector pin driving mechanism can adaptively adjust the position according to the ejector pin driven mechanism on different mold cores. After the two are connected, the ejector pin driven mechanism drives the ejector pin driven mechanism to perform demolding, so that the ejector pin structure of the mold can be adapted to the mold core of different cavities.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0020] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall assembled structure of the present invention;

[0023] Figure 2 This invention provides an exploded view of a portion of the fixed mold core structure.

[0024] Figure 3 A cross-sectional view of the locking mechanism is shown to highlight the invention.

[0025] Figure 4 The cross-sectional view of the ejector pin driven mechanism and the ejector pin driving mechanism is shown to highlight the present invention.

[0026] Figure 5 This is a schematic diagram of the connection between the ejector pin driven mechanism and the ejector pin driving mechanism of the present invention;

[0027] Figure 6 This invention is presented to highlight the structural schematic diagram of the ejector pin driven mechanism;

[0028] Figure 7 This is a structural schematic diagram highlighting the cross-section of the drive tube in this invention;

[0029] Figure 8 This is an exploded view of part of the structure of the ejector pin driving mechanism of the present invention;

[0030] Figure 9 This is a schematic diagram of the inner structure of the adjusting seat and the elastic snap-fit ​​seat of the present invention;

[0031] Figure 10 This is a schematic diagram of the retracted structure of the push rod control assembly of the present invention;

[0032] Figure 11 This is a schematic diagram of the top rod control assembly to highlight the structure of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] In the diagram: 1. Moving mold base; 2. Fixed mold base; 3. Moving mold plate; 4. Moving mold core; 5. Fixed mold plate; 6. Fixed mold core; 7. Locking mechanism; 71. Locking screw; 72. Transmission slide; 73. Connecting rod; 74. Locking insert; 8. Ejector pin driven mechanism; 81. Screw seat; 82. Driven ejector rod; 83. Return spring 1; 9. Ejector pin drive mechanism; 91. Extrusion cylinder; 92. Extrusion piston rod; 93. Connecting rod. 94. Drive tube; 95. Piston rod; 96. Return spring 2; 97. Adjusting seat; 98. Elastic snap-fit ​​seat; 99. Rod control assembly; 991. Mounting arm; 992. Central shaft; 993. Rotating sleeve; 994. Clock spring; 995. Spinning baffle; 910. Snap-fit ​​block; 911. Elastic clamp; 912. Snap-fit ​​ring; 10. Square iron; 11. Push plate; 12. Fixing plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0036] Please see Figure 1-11 This invention provides a technical solution: a refrigerator accessory injection mold for easy replacement of the core block, including a mold frame assembly and detachable movable mold core 4 and fixed mold core 6 disposed on the mold frame assembly, further including: an ejector pin driven mechanism 8, disposed on the movable mold core 4, for being driven to push the injection molded product out of the mold; an ejector pin driving mechanism 9, disposed on the mold frame assembly, for being connected to the ejector pin driven mechanism 8 and driven to drive the ejector pin driven mechanism 8 to move; the ejector pin driving mechanism 9 and the ejector pin driven mechanism 8 are detachably connected;

[0037] The ejector drive mechanism 9 includes a connecting component for connecting the ejector driven mechanism 8 and the ejector drive mechanism 9; a power component for generating power to drive the ejector driven mechanism 8; and a transmission component for transmitting power to the ejector driven mechanism 8.

[0038] After the ejector drive mechanism 9 is connected to the ejector driven mechanism 8 through the connecting component, the power component is driven to generate power, and the power is transmitted to the ejector driven mechanism 8 through the transmission component, driving the ejector driven mechanism 8 to push the injection molded product to demold.

[0039] Specifically, the moving mold core 4 is detachably mounted on the moving platen 3 via a set of locking mechanisms 7, and the fixed mold core 6 is detachably mounted on the fixed platen 5 via another set of locking mechanisms 7. Adjusting the two sets of locking mechanisms 7 allows for quick replacement of the moving mold core 4 and the fixed mold core 6. The traditional ejector pins are configured as a combination of ejector pin driven mechanisms 8 and ejector pin driven mechanisms 9. The length, position, and number of ejector pin driven mechanisms 8 follow the design of the moving mold core 4 for different cavities. After the moving mold core 4 is replaced, the number and position of ejector pin driven mechanisms 9 are adjusted according to the position and number of ejector pin driven mechanisms 8 on the moving mold core 4. The ejector pin driven mechanism 9 is detachably connected to the ejector pin driven mechanism 8 via a connecting component, completing the connection between the ejector pin driven mechanism 9 and the ejector pin driven mechanism 8 and the power transmission between them. The injection molding machine drives the power component to move, and the power is transmitted through the transmission component, driving the ejector pin driven mechanism 8 to push the molded product on the moving mold core 4 for demolding.

[0040] Compared with the prior art, the present invention uses a locking mechanism 7 to detachably mount the mold core on the mold frame assembly, enabling quick replacement of the mold core. At the same time, the ejector pin is configured as a combination of an ejector pin driven mechanism 8 and an ejector pin driving mechanism 9. The length, position, and number of ejector pin driven mechanisms 8 can follow the mold core design of the cavity. The ejector pin driving mechanism 9 can adaptively adjust the position of the ejector pin driven mechanisms 8 on different mold cores. After the two are connected, the ejector pin driven mechanism 9 drives the ejector pin driven mechanism 8 to perform demolding, so that the ejector pin structure of the mold can be adapted to mold cores of different cavities.

[0041] As a preferred embodiment, the mold frame assembly includes a movable mold plate 3 and a fixed mold plate 5. The movable mold core 4 is detachably mounted on the movable mold plate 3 via a set of locking mechanisms 7, and the fixed mold core 6 is detachably mounted on the fixed mold plate 5 via another set of locking mechanisms 7. Specifically, the locking mechanisms 7 are installed in the same way on both the fixed mold core 6 and the movable mold core 4. Both the fixed mold plate 5 and the movable mold plate 3 are provided with locking slots that cooperate with the locking mechanisms 7, and both the fixed mold core 6 and the movable mold core 4 are provided with mounting grooves that cooperate with the locking mechanisms 7. Figure 3As shown, the locking mechanism 7 includes a locking screw 71, which is helically connected to the fixed mold core 6. The end of the locking screw 71 near the inside of the fixed mold core 6 is rotatably connected to a transmission slide 72, and two sets of connecting rods 73 are hinged on the transmission slide 72. The ends of the two sets of connecting rods 73 away from the transmission slide 72 are each hinged to a locking insert 74. Rotating the locking screw 71 drives the transmission slide 72 to move, and through the two sets of connecting rods 73, drives the two sets of locking inserts 74 to extend and retract, which can realize the quick assembly and disassembly of the moving mold core 4 or the fixed mold core 6. It should be noted that, in order to achieve accurate positioning when installing the moving mold core 4 and the fixed mold core 6, positioning blocks are fixedly installed on the side of the moving template 3 and the fixed template 5 away from the locking mechanism 7.

[0042] As a preferred technical solution of this embodiment, the ejector pin driven mechanism 8 includes a driven ejector rod 82, which is movably mounted on the moving mold core 4. The driven ejector rod 82 can be driven to move along its axial direction. Specifically, the ejector pin driven mechanism 8 also includes a screw seat 81, which is threadedly connected to the side of the moving mold core 4 away from the cavity. The driven ejector rod 82 is movably fitted in the middle of the screw seat 81, and the end of the driven ejector rod 82 away from the screw seat 81 extends to the cavity surface of the moving mold core 4. A return spring 83 is movably fitted on the outside of the driven ejector rod 82 for driving the driven ejector rod 82 to return to its original position after demolding.

[0043] As a preferred technical solution of this embodiment, the transmission component includes a drive tube 94, which is coaxially arranged with the driven ejector rod 82. A piston ejector rod 95 is installed inside the drive tube 94. The piston ejector rod 95 is driven to push the driven ejector rod 82 along its axial direction. Specifically, a stepped hole that cooperates with the piston ejector rod 95 is opened inside the drive tube 94. A return spring 96 is movably fitted outside the piston ejector rod 95 to drive the piston ejector rod 95 to return after the injection molded product is demolded. The piston ejector rod 95 is driven by the power component to move along its axial direction, which can push the driven ejector rod 82 to move and push the injection molded product to demold.

[0044] As a preferred technical solution in this embodiment, the transmission component also includes a connecting pipe 93, one end of which is fixedly connected to the power component, and the other end is rotatably connected to the drive pipe 94. Specifically, the connecting pipe 93 is filled with hydraulic oil. One end of the connecting pipe 93 can be connected to the power component through a ferrule nut, and the other end can be connected to the drive pipe 94 through a rotary joint. The connecting pipe 93 is preferably a metal bellows. While realizing hydraulic oil transmission, the shape of the connecting pipe 93 can be changed, thereby adaptively adjusting the drive pipe 94 according to the position of the ejector pin driven mechanism 8 on the moving mold core 4.

[0045] As a preferred technical solution in this embodiment, the power assembly includes a fixedly installed extrusion cylinder 91 and an extrusion piston rod 92 fitted inside it. The extrusion cylinder 91 is filled with hydraulic oil. The extrusion piston rod 92 is driven to extrude the hydraulic oil inside the extrusion cylinder 91. Specifically, the extrusion piston rod 92 is driven to move inside the extrusion cylinder 91, pushing the hydraulic oil inside the extrusion cylinder 91 and the connecting pipe 93 to move into the drive pipe 94. The hydraulic oil can then push the piston rod 95 to move inside the drive pipe 94, thereby pushing the driven ejector rod 82 to move and demold the injection molded product.

[0046] As a preferred embodiment, the mold frame assembly further includes a fixed plate 12 and a movable push plate 11. The push plate 11 is driven to move the extrusion piston rod 92. Specifically, the mold frame assembly also includes a fixed mold base 2, with a fixed template 5 fixedly installed on the fixed mold base 2; a movable mold base 1 and a square iron 10, with the square iron 10 fixedly installed on the movable mold base 1 and the movable template 3 fixedly installed on the square iron 10; the fixed plate 12 is fixedly installed on the side of the movable mold base 1 near the square iron 10 by screws and a support tube, and the push plate 11... The device is mounted on the moving mold base 1 and located between the moving mold base 1 and the fixed plate 12. Several power components are provided on the fixed plate 12. The extrusion cylinder 91 of the power components is fixedly mounted on the fixed plate 12, and the extrusion piston rod 92 is fixedly connected to the push plate 11. When demolding the injection molded product, the injection molding machine drives the push plate 11 to move closer to the fixed plate 12, thereby driving the extrusion piston rod 92 to move inside the extrusion cylinder 91, so as to extrude the hydraulic oil inside the extrusion cylinder 91 and the connecting pipe 93 into the drive pipe 94.

[0047] As a preferred technical solution of this embodiment, the connecting component includes an adjusting seat 97, and an elastic snap-fit ​​seat 98 is fixedly connected to the bottom of the adjusting seat 97 for snap-fit ​​limiting of the drive tube 94. Specifically, the adjusting seat 97 is fixedly installed on the screw seat 81 by screws, so that the elastic snap-fit ​​seat 98 is fixedly installed on the bottom of the screw seat 81. The overall shape of the elastic snap-fit ​​seat 98 is "Ω". A snap-fit ​​ring 912 is provided on the outside of the drive tube 94. A snap-fit ​​groove adapted to the snap-fit ​​ring 912 is opened inside the elastic snap-fit ​​seat 98. After the drive tube 94 is snapped into the inside of the elastic snap-fit ​​seat 98 along the opening of the elastic snap-fit ​​seat 98, the radial and axial directions of the drive tube 94 can be limited by the snap-fit ​​ring 912 and the snap-fit ​​groove, so as to achieve a stable connection of the drive tube 94 at the bottom of the ejector pin driven mechanism 8.

[0048] As can be seen from the above embodiments, the moving mold core 4 and the fixed mold core 6 are replaceable. For moving mold core 4 with different cavity depths, the demolding distance required for demolding is different. That is, the moving mold core 4 with a larger cavity depth requires a longer demolding distance. If the distance that the piston ejector rod 95 pushes the driven ejector rod 82 to move is always fixed, it is difficult to adapt to moving mold core 4 with different cavity depths. Therefore, the following embodiments are proposed to solve the above problems.

[0049] In another embodiment of the present invention, an ejector rod control assembly 99 is provided inside the adjusting seat 97, located at the top of the drive tube 94, for controlling the number of open piston ejector rods 95. Specifically, a plurality of piston ejector rods 95 are movably installed inside the drive tube 94. In this embodiment, the number of piston ejector rods 95 inside the drive tube 94 is four sets, and the included angle between adjacent piston ejector rods 95 is ninety degrees. After the drive tube 94 is snapped into the elastic snap-fit ​​seat 98, the drive tube 94 is rotated and adjusted, and the angle of rotation of the drive tube 94 is ninety degrees each time. The set of piston ejector rods 95 near the opening of the adjusting seat 97 at the initial position pushes the ejector rod control assembly 99 to retract, thereby adjusting the number of open piston ejector rods 95 when the injection molded product is demolded. It should be noted that in this embodiment, the number of piston ejector rods 95 is four sets, and the number of open piston ejector rods 95 when the drive tube 94 rotates ninety degrees from the initial position is two sets, and the number of open piston ejector rods 95 when rotating one hundred and eighty degrees is... The number of open sections is three. It should also be noted that, in order for one set of piston rods 95 to retract by actuating the rod control assembly 99 when the drive tube 94 rotates, the initial end of one set of piston rods 95 in the drive tube 94 extends beyond the top of the drive tube 94, with the extension length sufficient to actuate the rod control assembly 99. During installation of the drive tube 94, this piston rod 95 is positioned at the opening of the adjusting seat 97. Several locking blocks 910 are provided on the outside of the drive tube 94, and elastic clamps 911 that cooperate with the locking blocks 910 are provided inside the adjusting seat 97. The angle between adjacent locking blocks 910 is ninety degrees. When the drive tube 94 is locked into the elastic locking seat 98, the locking blocks 910 are simultaneously locked into the corresponding elastic clamps 911, thus providing auxiliary restriction on the position of the drive tube 94. Simultaneously, after each ninety-degree rotation adjustment of the drive tube 94, the locking blocks 910 and elastic clamps 911 ensure the stability of the drive tube 94 after rotation adjustment.

[0050] As a preferred technical solution in this embodiment, after the drive tube 94 is engaged with the elastic engagement seat 98, when the drive tube 94 rotates axially, it can push the push rod control assembly 99 to retract through one of the sets of piston push rods 95. Specifically, the push rod control assembly 99 includes a mounting arm 991, which is fixedly installed inside the adjusting seat 97; a central shaft 992, which is fixedly installed at one end of the mounting arm 991, and the central shaft 992 is located on the central axis of the adjusting seat 97; a rotating sleeve 993, which is rotatably installed outside the central shaft 992; a spring spring 994 that cooperates with the rotating sleeve 993 is provided at the top of the central shaft 992 to drive the rotating sleeve 993 to reset; the external thread array of the rotating sleeve 993 has several rotating baffles 995, and the lowermost rotating baffle 995 is fixedly fitted with the rotating sleeve 993. The remaining rotating baffles 995 and rotating sleeves 993 are connected by a movable assembly. The uppermost rotating baffle 995 is fixed to the mounting arm 991 by a pin. The mounting arm 991 is provided with a positioning block that cooperates with the lowermost rotating baffle 995 to limit the initial position of the lowermost rotating baffle 995. Adjacent rotating baffles 995 are connected by mutually cooperating hooks. The ejector rod control assembly 99 is initially in the fully extended position. After the drive tube 94 is initially installed on the elastic snap-fit ​​seat 98, the portion of the piston ejector rod 95 near the opening of the adjusting seat 97 that extends beyond the drive tube 94 abuts against the lowermost rotating baffle 995. This ensures that when the drive tube 94 drives the piston ejector rod 95 to rotate, the ejector rod control assembly 99 can be retracted by the piston ejector rod 95, adjusting the number of piston ejector rods 95 open during demolding of the injection molded product.

[0051] It should be noted that when demolding injection molded products, the movement of the extrusion piston rod 92 in the extrusion cylinder 91 is fixed, and thus the volume of hydraulic oil extruded into the drive tube 94 is fixed. By adjusting the number of open piston rods 95, the number of piston rods 95 pushed by the hydraulic oil entering the drive tube 94 can be selected. When there is one set of open piston rods 95, all the hydraulic oil entering the drive tube 94 acts on one set of piston rods 95, and the distance that the piston rods 95 push the driven ejector rod 82 is the longest. When there are three sets of open piston rods 95, the hydraulic oil entering the drive tube 94 acts on all three sets of piston rods 95, and the distance that the piston rods 95 push the driven ejector rod 82 is the shortest. By adjusting the number of open piston rods 95, the ejection distance of the driven ejector rod 82 can be adjusted, so that the ejection distance of the driven ejector rod 82 can be adapted to the moving mold core 4 with different cavity depths.

[0052] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A refrigerator accessory injection mold facilitating replacement of a core block, comprising a mold frame assembly and a movable mold core (4) and a fixed mold core (6) detachably provided on the mold frame assembly, characterized in that, Also include: The ejector pin driven mechanism (8) is provided on the movable mold core (4), which is used to drive the injection product to push the mold; the ejector pin driving mechanism (9) is provided on the mold base assembly, which is used to connect with the ejector pin driven mechanism (8) and drive the ejector pin driven mechanism (8) to move; the ejector pin driving mechanism (9) and the ejector pin driven mechanism (8) are connected in a detachable manner; The ejector pin driving mechanism (9) includes a connecting assembly for connecting the ejector pin driven mechanism (8) and the ejector pin driving mechanism (9), a power assembly for generating power to drive the ejector pin driven mechanism (8) to move, and a transmission assembly for transmitting power to the ejector pin driven mechanism (8); The ejector pin driving mechanism (9) is connected with the ejector pin driven mechanism (8) through the connecting assembly, the power assembly is driven to generate power, and the power is transmitted to the ejector pin driven mechanism (8) through the transmission assembly, which drives the ejector pin driven mechanism (8) to push the injection product to demould; The mold base assembly includes a movable mold plate (3) and a fixed mold plate (5), the movable mold core (4) is detachably installed on the movable mold plate (3) through a set of locking mechanisms (7), and the fixed mold core (6) is detachably installed on the fixed mold plate (5) through another set of locking mechanisms (7); The ejector pin driven mechanism (8) includes a driven ejector rod (82) movably installed on the movable mold core (4), and the driven ejector rod (82) is driven to move along its axial direction; The transmission assembly includes a driving pipe (94), the driving pipe (94) is coaxially arranged with the driven ejector rod (82), the inside of the driving pipe (94) is provided with a piston rod (95), the piston rod (95) is driven to move the driven ejector rod (82) along its axial direction; a connecting pipe (93) is fixedly connected with the power assembly at one end and rotatably connected with the driving pipe (94) at the other end; The power assembly includes a fixedly installed extrusion cylinder (91) and an extrusion piston rod (92) sleeved in the inside of the extrusion cylinder (91), the inside of the extrusion cylinder (91) is filled with hydraulic oil, and the extrusion piston rod (92) is driven to extrude the hydraulic oil in the inside of the extrusion cylinder (91); The mold base assembly further includes a fixedly installed fixed plate (12) and a movably installed push plate (11), the push plate (11) is driven to move the extrusion piston rod (92); The connecting assembly includes an adjusting seat (97), the bottom of the adjusting seat (97) is fixedly connected with an elastic clamping seat (98) for clamping and limiting the driving pipe (94); The locking mechanism (7) includes a locking screw (71) screw-connected to the fixed mold core (6), the locking screw (71) is rotatably connected with a transmission slide (72) at one end close to the inside of the fixed mold core (6), and two sets of connecting rods (73) are hinged to the transmission slide (72), and the two sets of connecting rods (73) are hinged with locking insertion rods (74) at the ends away from the transmission slide (72).

2. The refrigerator accessory injection mold with easy replacement of the core block according to claim 1, wherein, The inside of the adjusting seat (97) is provided with a top rod control assembly (99) at the top end of the driving pipe (94), which is used to control the opening number of the piston rod (95).

3. The refrigerator accessory injection mold with easy replacement of the core block according to claim 2, wherein, After the driving pipe (94) is clamped on the elastic clamping seat (98), the driving pipe (94) can be retracted by pushing the top rod control assembly (99) through one group of piston top rods (95) when the driving pipe (94) rotates axially.

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