Injection mold

Abstract

The invention provides an injection mold which comprises a mold base, a first mold body, a second mold body, a first mold core, a second mold core and a push rod, and the mold base and the second mold body can move relative to the first mold body in the first direction; the first mold core is detachably arranged on the first mold body, a groove is formed in the surface, away from the mold base, of the first mold core, an ejector pin mounting hole communicated with the groove is formed in the surface, close to the mold base, of the first mold core, and a demolding ejector pin capable of moving in the first direction is arranged at the ejector pin mounting hole; the second mold core is arranged on the surface, close to the first mold body, of the second mold body, so that an injection molding cavity is formed by closing the groove through the second mold body; the push rod is arranged on the die holder; when the mold base is located at the demolding position, one end of the push rod extends into the ejector pin mounting hole to abut against the demolding ejector pin, and the end, away from the push rod, of the demolding ejector pin extends into the groove. The multiple first mold cores are arranged, and the structures of the grooves in the multiple first mold cores are different from one another. Quick die change can be realized, and cost reduction and benefit increase are realized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of injection molds, and in particular to an injection mold. Background Art

[0002] In today's automotive industry, market competition is intensifying, and the phenomenon of "involution" is becoming increasingly prominent. To meet increasingly diverse consumer demands, automakers are increasingly adopting a high-variety, small-batch production model. This production model not only requires auto parts suppliers to quickly respond to market changes and flexibly adjust production plans, but also effectively reduce costs and improve production efficiency while ensuring product quality.

[0003] In the automotive parts manufacturing industry, injection molds are a critical link in the production process. However, to meet the current demands of high-variety, low-volume production, multiple different injection molds must be designed and developed. This situation presents numerous challenges: long mold changeover times, high production costs, limited production system flexibility, and difficulty in quality control. These issues severely hinder improvements in production efficiency and economic benefits. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide an injection mold, aiming to solve the current problem that in order to meet the production needs of multiple varieties and small batches, it is usually necessary to design and develop multiple different injection molds.

[0005] To solve the above technical problems, an embodiment of the present invention provides an injection mold, comprising a mold base, a first mold body, and a second mold body arranged in sequence along a first direction, wherein the mold base and the second mold body are both movable relative to the first mold body along the first direction; the injection mold further comprises:

[0006] a first mold core, the first mold core being detachably disposed on a surface of the first mold body away from the mold base, the first mold core being provided with a groove on the surface away from the mold base, and an ejector pin mounting hole being provided on a surface of the first mold core close to the mold base and communicating with the groove, the ejector pin mounting hole being provided with a demolding ejector pin capable of moving along the first direction;

[0007] a second mold core, the second mold core being disposed on a surface of the second mold body close to the first mold body, so as to close the groove through the second mold body to form an injection molding cavity;

[0008] A push rod is provided on the mold base; when the mold base is in the standby position, the push rod is located on a side of the first mold core close to the mold base; when the mold base is in the demoulding position, one end of the push rod extends into the ejector pin mounting hole and abuts against the demoulding ejector pin, and the end of the demoulding ejector pin away from the push rod extends into the groove;

[0009] There are multiple first mold cores, and the structures of the grooves on the multiple first mold cores are different, so that the multiple first mold cores can be selectively installed on the first mold body.

[0010] In some embodiments, a first slot is provided on the surface of the first mold body away from the mold base, and one end of the first slot in a second direction perpendicular to the first direction passes through the first mold body to form a first insertion port, so that the first mold core can be inserted into the first slot from the first insertion port.

[0011] In some embodiments, one end of the first slot away from the first insertion port passes through the first mold body, and a first blocking member is provided on the surface of the first mold body away from the first insertion port, and the first blocking member abuts against the side of the first mold core away from the first insertion port.

[0012] In some embodiments, a first limiting rib extending along the second direction is protruded on the inner groove side wall of the first slot, and a first limiting groove extending along the second direction is penetrated through the first mold core, and the first limiting groove and the first limiting rib form a limiting fit in the first direction.

[0013] In some embodiments, a first threaded hole is provided on at least one surface of the first mold body in the slot width direction of the first slot, the first threaded hole passes through the inner slot side wall of the first slot, a first fastening screw is provided in the first threaded hole, and the first fastening screw abuts the first mold core.

[0014] In some embodiments, a second slot is provided on the surface of the second mold body close to the first mold body, and one end of the second slot in a second direction perpendicular to the first direction passes through the second mold body to form a second insertion port, so that the second mold core can be inserted into the second slot from the second insertion port.

[0015] In some embodiments, the end of the second slot away from the second insertion port passes through the second mold body, and a second blocking member is provided on the surface of the second mold body away from the second insertion port, and the second blocking member abuts against the side of the second mold core away from the second insertion port.

[0016] In some embodiments, a second limiting rib extending along the second direction is protruded on the inner groove side wall of the second slot, and a second limiting groove extending along the second direction is provided through the second mold core, and the second limiting groove and the second limiting rib form a limiting fit in the first direction.

[0017] In some embodiments, the second mold body is provided with a second threaded hole on at least one surface in the slot width direction of the second slot, the second threaded hole passes through the inner slot side wall of the second slot, and a second fastening screw is provided in the second threaded hole, and the second fastening screw abuts the second mold core.

[0018] In some embodiments, a first through hole extending along the first direction is provided through the first mold body, and one end of the push rod away from the mold base extends into the first through hole.

[0019] In some embodiments, a mounting groove is provided on the surface of the first mold core close to the mold base, a panel is embedded in the mounting groove, a second through hole is penetrated through the panel, the bottom wall of the mounting groove is provided with the ejector pin mounting hole, and one end of the demolding ejector close to the mold base extends into the second through hole; an annular abutting surface facing the panel is provided on the inner hole wall of the ejector pin mounting hole, and an annular abutting boss located between the annular abutting surface and the panel is provided on the demolding ejector, and a first return spring is provided in the ejector pin mounting hole, the first return spring is sleeved on the demolding ejector, and the two ends of the first return spring respectively abut the annular abutting boss and the annular abutting surface; when the mold base is in the standby position, the annular abutting boss abuts the panel.

[0020] In some embodiments, a second return spring and a connecting rod extending along the first direction are provided between the mold base and the first mold body, one end of the connecting rod can be movably provided on the mold base or the first mold body along the first direction, the second return spring is sleeved on the connecting rod, and the second return spring respectively abuts the mold base and the first mold body.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The injection mold of the present invention adopts a common mold frame structure. By configuring multiple different first mold cores, it can meet the production needs of multiple varieties and small batches, which significantly reduces the mold development cost. In addition, since only the first mold core needs to be replaced when replacing the mold, the mold replacement time is greatly reduced, thereby realizing rapid mold change and achieving the purpose of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 This is a structural diagram of an injection mold configured with multiple first mold cores and multiple second mold cores in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the injection mold;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of the injection mold from another perspective;

[0027] Figure 4 for Figure 2 One of the cross-sectional views of the injection mold;

[0028] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0029] Figure 6 for Figure 2 Sectional view 2 of the injection mold;

[0030] Figure 7 for Figure 2 Sectional view of the injection mold (part 3);

[0031] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0032] Figure 9 for Figure 2 Schematic diagram of the structure of the middle injection mold after removing the second mold body and the second mold core;

[0033] Figure 10 for Figure 2 Schematic diagram of the structure of the components of the second mold body and the second mold core.

[0034] Description of the accompanying drawings of the present invention:

[0035] Injection mold 100, mold base 1, first mold body 2, first slot 21, first insertion port 22, first blocking member 23, first limiting rib 24, first threaded hole 25, first fastening screw 26, first template 27, first through hole 271, first fixing plate 28, second mold body 3, second slot 31, second insertion port 32, second blocking member 33, second limiting rib 34, second threaded hole 35, second fastening screw 36, second template 37, second fixing plate 38, first mold core 4, groove 41, ejector pin mounting hole 42, annular abutment surface 421, demoulding ejector 43, annular abutment boss 431, first limiting groove 44, mounting groove 45, panel 46, second through hole 461, first return spring 47, first positioning hole 48, second mold core 5, second limiting slot 51, second positioning hole 52, push rod 6, second return spring 7, connecting rod 8.

[0036] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The present invention provides an injection mold, Figures 1 to 10 A preferred embodiment of the injection mold provided by the present invention is shown.

[0041] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 5 In this embodiment, the injection mold 100 includes a mold base 1, a first mold body 2, a second mold body 3, a first mold core 4, a second mold core 5 and a push rod 6; the mold base 1, the first mold body 2 and the second mold body 3 are arranged in sequence along the first direction, and the mold base 1 and the second mold body 3 can both move relative to the first mold body 2 along the first direction; the first mold core 4 is detachably arranged on the surface of the first mold body 2 away from the mold base 1, and a groove 41 is provided on the surface of the first mold core 4 away from the mold base 1, and a ejector pin mounting hole 42 connected to the groove 41 is provided on the surface of the first mold core 4 close to the mold base 1, and a demolding ejector pin that can move along the first direction is provided at the ejector pin mounting hole 42. Needle 43; the second mold core 5 is arranged on the surface of the second mold body 3 close to the first mold body 2, so as to form an injection molding cavity by closing the groove 41 through the second mold body 3; the push rod 6 is arranged on the mold base 1; when the mold base 1 is in the standby position, the push rod 6 is located on the side of the first mold core 4 close to the mold base 1; when the mold base 1 is in the demolding position, one end of the push rod 6 extends into the ejector pin mounting hole 42 and abuts against the demolding ejector pin 43, and the demolding ejector pin 43 extends into the groove 41 away from the end of the push rod 6; wherein, the first mold core 4 is provided with multiple, and the structures of the grooves 41 on the multiple first mold cores 4 are different, so that the multiple first mold cores 4 can be selectively installed on the first mold body 2.

[0042] Specifically, the mold base 1, the first mold body 2 and the second mold body 3 are arranged in sequence along the first direction. The first direction can be up and down or horizontal, etc. Optionally, please refer to Figure 2 In this embodiment, the first direction is the horizontal direction. The first direction is defined as the left and right direction below. The side of the first mold body 2 close to the second mold body 3 is the left side of the first mold body 2, and the side of the first mold body 2 close to the mold base 1 is the right side of the first mold body 2.

[0043] The first mold core 4 is detachably mounted on the left surface of the first mold body 2, and the second mold core 5 is mounted on the right surface of the second mold body 3, with the first mold core 4 and the second mold core 5 facing each other left and right. A groove 41 is provided on the left surface of the first mold core 4, and an injection port and an injection channel are provided on the second mold body 3 and the second mold core 5, respectively. The injection channel runs through the second mold core 5 from left to right, and the left end of the injection channel is connected to the injection port of the second mold body 3. The second mold body 3 can move left and right relative to the first mold body 2. Within the movable range of the second mold body 3, the second mold body 3 has an open mold position and a closed mold position. When the second mold body 3 is in the open mold position, the first mold core 4 and the second mold core 5 are spaced apart from each other left and right. When the second mold body 3 is in the mold closing position, the left surface of the first mold core 4 is completely fitted with the right surface of the second mold core 5, and the right surface of the second mold core 5 covers the notch of the groove 41 to form a closed injection molding cavity. At this time, the right end of the injection channel on the second mold core 5 is connected to the groove 41, so that the injection molding cavity is connected to the injection port on the second mold core 5, so that the injection plastic can be injected into the injection molding cavity from the injection port to form a product.

[0044] The right surface of the first mold core 4 is provided with one or more ejector pin mounting holes 42 extending in the left-right direction. The left end of each ejector pin mounting hole 42 extends through the bottom wall of the groove 41, connecting the ejector pin mounting hole 42 with the groove 41. Each ejector pin mounting hole 42 houses a demolding pin 43 that can move left and right, extending in the left-right direction.

[0045] The mold base 1 is provided with one or more push rods 6 extending in the left and right directions. Each push rod 6 is opposite to a demolding pin 43 on the left and right sides, and the right end of each push rod 6 is fixedly provided on the mold base 1. Since the mold base 1 can move left and right relative to the first mold body 2, the mold base 1 can drive the push rods 6 to move left and right together. Within the movable stroke of the mold base 1, the mold base 1 has a standby position and a demolding position. Before the product is injection molded, the mold base 1 is located in the standby position, the push rod 6 is located on the right side of the first mold core 4, the left end of the push rod 6 does not extend into the ejector mounting hole 42, and the demolding pin 43 is completely located in the ejector mounting hole 42, and the left end of the demolding pin 43 does not extend into the groove 41. After the product is injection molded in the injection molding cavity, the first mold body 2 located at the mold closing position is first moved to the left to the mold opening position to separate the first mold core 4 from the second mold core 5; then the mold base 1 located at the standby position is moved to the left to the demolding position. In the process of the mold base 1 driving the push rod 6 to move to the left, the left end of the push rod 6 can be extended into the ejector pin mounting hole 42 and abut against the right end of the demolding ejector pin 43, so that the push rod 6 pushes the demolding ejector pin 43 to move to the left, so that the left end of the demolding ejector pin 43 can be extended into the groove 41 and eject the product in the groove 41, thereby realizing the demolding function of the injection mold 100.

[0046] There are multiple first mold cores 4, and the structures of the grooves 41 on the multiple first mold cores 4 are different. The structures of the grooves 41 of the multiple first mold cores 4 are roughly the same except for the grooves 41. In this way, in the production process of multiple varieties and small batches, a first mold core 4 that meets the production needs can be selected and installed on the injection mold 100 according to the actual production needs. The specific number of the first mold cores 4 can be set according to the actual situation. For example, see Figure 1 In this embodiment, seven first mold cores 4 are provided.

[0047] The injection mold 100 of the present invention adopts a common mold frame structure. By configuring multiple different first mold cores 4, it can meet the production needs of multiple varieties and small batches, which significantly reduces the mold development cost. Moreover, since only the first mold core 4 needs to be replaced when replacing the mold, the mold replacement time is greatly reduced, thereby realizing rapid mold change and achieving the purpose of reducing costs and increasing efficiency.

[0048] The specific installation method of the first mold core 4 on the first mold body 2 can be set according to actual conditions. For example, the first mold core 4 can be detachably arranged on the first mold body 2 by means of bolt fixing. Figure 2 、 Figure 3 、 Figure 7 and Figure 9 In this embodiment, a first slot 21 is provided on the surface of the first mold body 2 away from the mold base 1. One end of the first slot 21 in a second direction perpendicular to the first direction passes through the first mold body 2 to form a first insertion port 22 for the first mold core 4 to be inserted into the first slot 21 from the first insertion port 22.

[0049] Specifically, the second direction can be up and down or horizontal. Figure 2 In this embodiment, the second direction is the up-down direction, and the first insertion port 22 is set to face upward or downward. The following will be introduced as an example in which the second direction is the up-down direction and the first insertion port 22 is set to face upward. A first slot 21 extending along the up-down direction is provided on the left surface of the first mold body 2. The shape of the first slot 21 is generally compatible with the shape of the first mold core 4. The upper end of the first slot 21 passes through the upper surface of the first mold body 2 upward to form an upward-facing first insertion port 22 on the upper surface of the first mold body 2. In this way, the first mold core 4 can be inserted into the first slot 21 downward from the first insertion port 22, making the disassembly and assembly of the first mold core 4 more convenient and labor-saving.

[0050] The lower end of the first slot 21 may pass through the lower surface of the first mold body 2; the lower end of the first slot 21 may not pass through the lower surface of the first mold body 2. Figure 3 and Figure 9In this embodiment, the end of the first slot 21 away from the first insertion port 22 passes through the first mold body 2, and a first blocking member 23 is provided on the surface of the first mold body 2 away from the first insertion port 22. The first blocking member 23 abuts against the side of the first mold core 4 away from the first insertion port 22.

[0051] Specifically, the lower end of the first slot 21 passes downward through the lower surface of the first mold body 2 to form a downward first through-opening on the lower surface of the first mold body 2. A first blocking member 23 is provided on the lower surface of the first mold body 2. Part of the first blocking member 23 is blocked on the lower side of the first through-opening, so that the first blocking member 23 abuts against the lower side of the first mold core 4 to limit the first mold core 4 from sliding downward out of the first slot 21 from the first through-opening.

[0052] Optionally, see Figure 2 、 Figure 7 、 Figure 8 and Figure 9 In this embodiment, a first limiting rib 24 extending along the second direction is protruded on the inner groove side wall of the first slot 21, and a first limiting groove 44 extending along the second direction is penetrated through the first mold core 4. The first limiting groove 44 and the first limiting rib 24 form a limiting fit in the first direction.

[0053] Specifically, a first limiting rib 24 extending in the vertical direction is convexly provided on the front groove side wall and / or the rear groove side wall of the first slot 21, and a first limiting groove 44 extending in the vertical direction is opened on the front surface and / or the rear surface of the first mold core 4. The first limiting groove 44 passes through the first mold core 4 vertically, so that the first limiting groove 44 cooperates with the first limiting rib 24 in the left and right upward directions to limit the first mold core 4 in the left and right upward directions. The specific arrangement of the first limiting groove 44 on the first mold core 4 may not be particularly limited. For example, in this embodiment, the first limiting groove 44 is arranged at the connection between the front surface and the left surface of the first mold core 4, or at the connection between the rear surface and the left surface of the first mold core 4.

[0054] Optionally, see Figure 2 、 Figure 7 、 Figure 8 and Figure 9 In this embodiment, the first mold body 2 is provided with a first threaded hole 25 on at least one surface in the groove width direction of the first slot 21. The first threaded hole 25 passes through the inner groove side wall of the first slot 21. A first fastening screw 26 is provided in the first threaded hole 25, and the first fastening screw 26 abuts the first mold core 4.

[0055] Specifically, a first threaded hole 25 is provided through the front surface and / or rear surface of the first mold core 4, the first threaded hole 25 is connected to the first slot 21, and a first fastening screw 26 is provided in the first threaded hole 25. The first fastening screw 26 in the first threaded hole 25 is tightened so that the tail of the first fastening screw 26 abuts against the front surface or rear surface of the first mold core 4, so that the first fastening screw 26 can limit the first mold core 4.

[0056] Further, see Figure 8 and Figure 9 In this embodiment, a first positioning hole 48 is provided on the first mold core 4 corresponding to the first fastening screw 26, and one end of the first fastening screw 26 extends into the first positioning hole 48. Thus, the first fastening screw 26 cooperates with the first positioning hole 48, so that the first fastening screw 26 can better limit the position of the first mold core 4.

[0057] Optionally, see Figure 2 、 Figure 3 and Figure 9 In this embodiment, the first mold body 2 includes a first template 27 and a first fixed plate 28. Two parallel first fixed plates 28 are provided on the plate surface of the first template 27 close to the second mold body 3, and a first limiting groove 44 is formed between the two first fixed plates 28.

[0058] Specifically, the two first fixing plates 28 are both extended in the up and down directions. The two first fixing plates 28 are arranged on the left plate surface of the first template 27, and the two first fixing plates 28 are spaced apart from each other in the front and back directions, so that a first limiting groove 44 is formed between the two first fixing plates 28. The two first fixing plates 28 form the side walls of the first limiting groove 44, and the first template 27 forms the bottom wall of the first limiting groove 44.

[0059] The vertical dimension of the first fixing plate 28 is the length of the first fixing plate 28. The lengths of the two first fixing plates 28 can be equal or unequal. Figure 2 、 Figure 3 and Figure 9 In this embodiment, one end of a first fixing plate 28 close to the first insertion port 22 protrudes from the first template 27 , and one end of another first fixing plate 28 close to the first insertion port 22 is flush with the first template 27 .

[0060] Specifically, the two first fixing plates 28 are one long and one short. The lower end surfaces of the short first fixing plates 28 and the lower end surfaces of the long first fixing plates 28 are flush with the lower end surface of the first template 27. The upper end surface of the short first fixing plates 28 is flush with the upper end surface of the first template 27, and the upper end of the long first fixing plates 28 extends upward beyond the first template 27. In this way, the first mold core 4 can be inserted into the first slot 21 through the first insertion opening 22, along the portion of the long first fixing plates 28 that extends beyond the first template 27. This allows the long first fixing plates 28 to serve as a guide for the insertion of the first mold core 4.

[0061] The second mold core 5 is also usually detachably arranged on the second mold body 3. For example, the second mold core 5 can be detachably arranged on the second mold body 3 by means of bolt fixing. Figure 2 、 Figure 3 、 Figure 7 and Figure 10 In this embodiment, a second slot 31 is provided on the surface of the second mold body 3 close to the first mold body 2. The second slot 31 passes through the second mold body 3 at one end in a second direction perpendicular to the first direction to form a second insertion port 32 for the second mold core 5 to be inserted into the second slot 31 from the second insertion port 32.

[0062] Specifically, the orientation of the second insertion port 32 can be the same as that of the first insertion port 22; the orientation of the second insertion port 32 can also be opposite to that of the first insertion port 22. The following will take the example of the second insertion port 32 being the same as that of the first insertion port 22 as an example, then the second insertion port 32 is also set upward.

[0063] A second slot 31 extending in the up and down directions is provided on the right surface of the second mold body 3. The shape of the second slot 31 is generally adapted to the shape of the second mold core 5. The upper end of the second slot 31 passes through the upper surface of the second mold body 3 upward to form an upward second insertion port 32 on the upper surface of the second mold body 3. In this way, the second mold core 5 can be inserted downward into the second slot 31 from the second insertion port 32, making the disassembly and assembly of the second mold core 5 more convenient and labor-saving.

[0064] The lower end of the second slot 31 may pass through the lower surface of the second mold body 3; the lower end of the second slot 31 may not pass through the lower surface of the second mold body 3. Figure 3 and Figure 10 In this embodiment, the end of the second slot 31 away from the second insertion port 32 passes through the second mold body 3, and a second blocking member 33 is provided on the surface of the second mold body 3 away from the second insertion port 32. The second blocking member 33 abuts against the side of the second mold core 5 away from the second insertion port 32.

[0065] Specifically, the lower end of the second slot 31 passes downward through the lower surface of the second mold body 3 to form a second downward through-opening on the lower surface of the second mold body 3. A second blocking member 33 is provided on the lower surface of the second mold body 3. Part of the second blocking member 33 is blocked on the lower side of the second through-opening, so that the second blocking member 33 abuts against the lower side of the second mold core 5 to limit the second mold core 5 from sliding downward out of the second slot 31 from the second through-opening.

[0066] Optionally, see Figure 2 、 Figure 7 、 Figure 8 and Figure 10 In this embodiment, a second limiting rib 34 extending along the second direction is protruded on the inner groove side wall of the second slot 31, and a second limiting groove 51 extending along the second direction is penetrated and provided on the second mold core 5. The second limiting groove 51 and the second limiting rib 34 form a limiting fit in the first direction.

[0067] Specifically, a second limiting rib 34 extending in the vertical direction is convexly provided on the front groove side wall and / or the rear groove side wall of the second slot 31, and a second limiting groove 51 extending in the vertical direction is opened on the front surface and / or the rear surface of the second mold core 5. The second limiting groove 51 passes through the second mold core 5 vertically, so that the second limiting groove 51 cooperates with the second limiting rib 34 in the left and right upward direction to limit the second mold core 5 in the left and right upward direction. The specific arrangement of the second limiting groove 51 on the second mold core 5 may not be particularly limited. For example, in this embodiment, the second limiting groove 51 is arranged at the connection between the front surface and the left surface of the second mold core 5, or at the connection between the rear surface and the left surface of the second mold core 5.

[0068] Optionally, see Figure 2 、 Figure 7 、 Figure 8 and Figure 10 In this embodiment, the second mold body 3 is provided with a second threaded hole 35 on at least one surface in the groove width direction of the second slot 31, the second threaded hole 35 passes through the inner groove side wall of the second slot 31, and a second fastening screw 36 is provided in the second threaded hole 35, and the second fastening screw 36 abuts the second mold core 5.

[0069] Specifically, a second threaded hole 35 is provided through the front surface and / or rear surface of the second mold core 5, the second threaded hole 35 is connected to the second slot 31, and a second fastening screw 36 is provided in the second threaded hole 35. The second fastening screw 36 in the second threaded hole 35 is tightened so that the tail of the second fastening screw 36 abuts against the front surface or rear surface of the second mold core 5, so that the second fastening screw 36 can limit the second mold core 5.

[0070] Further, see Figure 8 and Figure 9 In this embodiment, a second positioning hole 52 is provided on the second mold core 5 corresponding to the second fastening screw 36, and one end of the second fastening screw 36 extends into the second positioning hole 52. Thus, the second fastening screw 36 cooperates with the second positioning hole 52, so that the second fastening screw 36 can better limit the position of the second mold core 5.

[0071] Optionally, see Figure 2 、 Figure 3 and Figure 10 In this embodiment, the second mold body 3 includes a second template 37 and a second fixed plate 38. Two parallel second fixed plates 38 are provided on the plate surface of the second template 37 close to the second mold body 3, and a second limiting groove 51 is formed between the two second fixed plates 38.

[0072] Specifically, the two second fixing plates 38 are both extended in the up and down directions, and the two second fixing plates 38 are arranged on the right plate surface of the second template 37, and the two second fixing plates 38 are spaced apart from each other in the front and back directions, so that a second limiting groove 51 is formed between the two second fixing plates 38, and the two second fixing plates 38 form the side walls of the second limiting groove 51, and the second template 37 forms the bottom wall of the second limiting groove 51.

[0073] The vertical dimension of the second fixing plate 38 is the length of the second fixing plate 38. The lengths of the two second fixing plates 38 can be equal or unequal. Figure 2 、 Figure 3 and Figure 10 In this embodiment, one end of a second fixing plate 38 close to the second insertion opening 32 protrudes from the second template 37 , and another end of a second fixing plate 38 close to the second insertion opening 32 is flush with the second template 37 .

[0074] Specifically, the two second fixing plates 38 are one long and one short. The lower end surfaces of the short second fixing plates 38 and the lower end surfaces of the long second fixing plates 38 are flush with the lower end surface of the second template 37. The upper end surface of the short second fixing plates 38 is flush with the upper end surface of the second template 37, and the upper end of the long second fixing plates 38 extends upward beyond the second template 37. In this way, the second mold core 5 can be inserted into the second slot 31 through the second insertion opening 32, along the portion of the long second fixing plates 38 that extends beyond the second template 37. This allows the long second fixing plates 38 to serve as a guide for the insertion of the second mold core 5.

[0075] Optionally, see Figure 1In this embodiment, a plurality of second mold cores 5 are provided so that the plurality of second mold cores 5 can be selectively installed on the second mold body 3. In this way, in the production process of multiple varieties and small batches, a second mold core 5 that meets the production needs can be selected and installed on the injection mold 100 according to the actual production needs. The specific number of the second mold cores 5 can be set according to the actual situation. For example, see Figure 1 In this embodiment, two second mold cores 5 are provided, the right surface of one second mold core 5 is mirror-polished, and the right surface of the other second mold core 5 is not mirror-polished.

[0076] Optionally, see Figure 4 and Figure 5 In this embodiment, a first through hole 271 extending along the first direction is provided through the first mold body 2 , and one end of the push rod 6 away from the mold base 1 extends into the first through hole 271 .

[0077] Specifically, a first through hole 271 is provided on the first template 27 corresponding to the push rod 6, and the left end of the push rod 6 extends into the first through hole 271, and the left end of the push rod 6 and the first through hole 271 form a sliding guide cooperation in the left and right upward directions. In this way, when the mold base 1 drives the push rod 6 to move left and right, the first through hole 271 can guide the push rod 6 to move left and right.

[0078] Optionally, see Figure 4 and Figure 5 In this embodiment, a mounting groove 45 is provided on the surface of the first mold core 4 close to the mold base 1, and a panel 46 is embedded in the mounting groove 45. A second through hole 461 is penetrated on the panel 46, and a pin mounting hole 42 is provided on the bottom wall of the mounting groove 45. One end of the demoulding ejector 43 close to the mold base 1 extends into the second through hole 461; an annular abutting surface 421 facing the panel 46 is provided on the inner hole wall of the ejector mounting hole 42, and an annular abutting boss 431 located between the annular abutting surface 421 and the panel 46 is provided on the demoulding ejector 43. A first return spring 47 is provided in the ejector mounting hole 42, and the first return spring 47 is sleeved on the demoulding ejector 43. The two ends of the first return spring 47 respectively abut the annular abutting boss 431 and the annular abutting surface 421; when the mold base 1 is in the standby position, the annular abutting boss 431 abuts the panel 46.

[0079] Specifically, a mounting groove 45 is defined on the right surface of the first mold core 4. The shape of the mounting groove 45 generally matches that of the panel 46, allowing the panel 46 to fit within the mounting groove 45. An ejector mounting hole 42 is provided on the bottom wall of the mounting groove 45. A second through-hole 461 is provided on the panel 46, corresponding to and extending from the ejector mounting hole 42. The second through-hole 461 communicates with the ejector mounting hole 42. The ejector mounting hole 42 is a stepped hole, forming a rightward-facing annular abutment surface 421 on the inner wall of the ejector mounting hole 42. An annular abutment boss 431 is provided on the circumferential side surface of the right end of the ejector pin 43. A first return spring 47 is sleeved onto the ejector pin 43, with the left and right ends of the first return spring 47 abutting the annular abutment surface 421 and the annular abutment boss 431, respectively. When the mold base 1 is in the standby position, the push rod 6 is located on the right side of the panel 46, the right end of the ejector pin 43 is located within the second through-hole 461, and the annular abutment boss 431 abuts the left side of the panel 46. When the mold base 1 is in the demolding position, the left end of the push rod 6 extends into the second through-hole 461, compressing the first return spring 47. This releases the mold base 1 from the demolding position, and the ejector pin 43, driven rightward by the first return spring 47, moves the push rod 6 and the mold base 1 rightward, automatically returning the mold base 1 to the standby position.

[0080] Optionally, see Figure 6 In this embodiment, a second return spring 7 and a connecting rod 8 extending along the first direction are provided between the mold base 1 and the first mold body 2. One end of the connecting rod 8 can be movably provided on the mold base 1 or the first mold body 2 along the first direction. The second return spring 7 is sleeved on the connecting rod 8, and the second return spring 7 abuts against the mold base 1 and the first mold body 2 respectively.

[0081] Specifically, the connecting rod 8 extends horizontally. The left end of the connecting rod 8 is fixed to the first mold plate 27, while the right end of the connecting rod 8 is movably mounted on the mold base 1. A second return spring 7 is mounted on the connecting rod 8, with its left and right ends respectively abutting the first mold plate 27 and the mold base 1. As the mold base 1 moves leftward from the standby position to the demolding position, the second return spring 7 is gradually compressed. When the mold base 1 is released from the demolding position, the second return spring 7 moves rightward, automatically returning the mold base 1 to the standby position.

[0082] The injection mold 100 has the following advantages:

[0083] 1. The injection mold 100 can improve production efficiency. The injection mold 100 can achieve rapid mold change, which greatly reduces the mold replacement time, thereby reducing the waiting time and downtime of the production line and improving the overall production efficiency.

[0084] 2. The injection mold 100 can enhance flexibility. Due to the simple quick mold change operation, the production line can adapt to products of different shapes, sizes and colors more quickly, thereby meeting market changes and changes in customer demand.

[0085] 3. The injection mold 100 can reduce costs. The injection mold 100 reduces mold development costs by sharing a mold frame.

[0086] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, within the scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. An injection mold, characterized in that: The injection mold comprises a mold base, a first mold body, and a second mold body arranged in sequence along a first direction, wherein the mold base and the second mold body are both movable relative to the first mold body along the first direction; the injection mold further comprises: a first mold core, the first mold core being detachably disposed on a surface of the first mold body away from the mold base, the first mold core being provided with a groove on the surface away from the mold base, and an ejector pin mounting hole being provided on a surface of the first mold core close to the mold base and communicating with the groove, the ejector pin mounting hole being provided with a demolding ejector pin capable of moving along the first direction; a second mold core, the second mold core being disposed on a surface of the second mold body close to the first mold body, so as to close the groove through the second mold body to form an injection molding cavity; A push rod is provided on the mold base; when the mold base is in the standby position, the push rod is located on a side of the first mold core close to the mold base; when the mold base is in the demoulding position, one end of the push rod extends into the ejector pin mounting hole and abuts against the demoulding ejector pin, and the end of the demoulding ejector pin away from the push rod extends into the groove; There are multiple first mold cores, and the structures of the grooves on the multiple first mold cores are different, so that the multiple first mold cores can be selectively installed on the first mold body.

2. The injection mold according to claim 1, characterized in that A first slot is provided on the surface of the first mold body away from the mold base. One end of the first slot in a second direction perpendicular to the first direction passes through the first mold body to form a first insertion port for the first mold core to be inserted into the first slot from the first insertion port.

3. The injection mold according to claim 2, characterized in that One end of the first slot away from the first insertion port passes through the first mold body, a first blocking member is provided on a surface of the first mold body away from the first insertion port, and the first blocking member abuts against a side of the first mold core away from the first insertion port; and / or, A first limiting rib extending along the second direction is protruded on the inner groove side wall of the first slot, and a first limiting groove extending along the second direction is penetrated through the first mold core, and the first limiting groove and the first limiting rib form a limiting fit in the first direction.

4. The injection mold according to claim 2, characterized in that The first mold body is provided with a first threaded hole on at least one surface in the slot width direction of the first slot, the first threaded hole passes through the inner slot side wall of the first slot, and a first fastening screw is provided in the first threaded hole, and the first fastening screw abuts the first mold core.

5. The injection mold according to claim 1, wherein: A second slot is provided on the surface of the second mold body close to the first mold body. One end of the second slot in a second direction perpendicular to the first direction passes through the second mold body to form a second insertion port, so that the second mold core can be inserted into the second slot from the second insertion port.

6. The injection mold according to claim 5, characterized in that One end of the second slot away from the second insertion port passes through the second mold body, a second blocking member is provided on a surface of the second mold body away from the second insertion port, and the second blocking member abuts against a side of the second mold core away from the second insertion port; and / or, A second limiting rib extending along the second direction is protruded on the inner groove side wall of the second slot, and a second limiting groove extending along the second direction is penetrated through the second mold core, and the second limiting groove and the second limiting rib form a limiting fit in the first direction.

7. The injection mold according to claim 5, characterized in that The second mold body is provided with a second threaded hole on at least one surface in the slot width direction of the second slot, the second threaded hole passes through the inner slot side wall of the second slot, a second fastening screw is provided in the second threaded hole, and the second fastening screw abuts the second mold core.

8. The injection mold according to claim 1, characterized in that A first through hole extending along the first direction is provided through the first mold body, and one end of the push rod away from the mold base extends into the first through hole.

9. The injection mold according to claim 1, characterized in that A mounting groove is provided on the surface of the first mold core close to the mold base, a panel is embedded in the mounting groove, a second through hole is penetrated by the panel, the bottom wall of the mounting groove is provided with the ejector pin mounting hole, one end of the demoulding ejector pin close to the mold base extends into the second through hole; an annular abutting surface facing the panel is provided on the inner hole wall of the ejector pin mounting hole, an annular abutting boss located between the annular abutting surface and the panel is provided on the demoulding ejector pin, a first return spring is provided in the ejector pin mounting hole, the first return spring is sleeved on the demoulding ejector pin, and two ends of the first return spring respectively abut the annular abutting boss and the annular abutting surface; when the mold base is in the standby position, the annular abutting boss abuts the panel.

10. The injection mold according to claim 1, characterized in that A second return spring and a connecting rod extending along the first direction are provided between the mold base and the first mold body. One end of the connecting rod is movably provided on the mold base or the first mold body along the first direction. The second return spring is sleeved on the connecting rod, and the second return spring abuts against the mold base and the first mold body respectively.

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