Potential injection mold with cold runner for separating cold material

Abstract

The utility model provides a kind of convenient runner cold material separation's submerged glue injection mold, including upper die fixed plate, nozzle plate, upper die, lower die, ejector pin plate, upper die fixed plate is equipped with syringe, and upper die is equipped with glue injection runner, upper die and lower die between being provided with the mold cavity for molding product, further include line seat and nozzle ejector pin, line seat is equipped with glue injection runner, glue injection runner includes pouring runner, conveying runner and submerged glue injection runner, line seat includes first slider and second slider, first slider is equipped with pouring runner, second slider is equipped with conveying runner, submerged glue injection runner, pouring runner has glue inlet, first slider is equipped with ejector pin hole, nozzle ejector pin passes through second slider and extends into ejector pin hole, nozzle ejector pin is movably connected with ejector pin plate, first slider can be away from or close to second slider and can drive second slider to slide, nozzle ejector pin moves along with first slider, when moulding, syringe, glue injection runner, pouring runner, conveying runner, submerged glue injection runner, mold cavity are interconnected.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a submersible injection mold that facilitates the separation of cold material from the runner. Background Technology

[0002] Currently, many products such as mobile phone back covers and laptop back covers use a submerged gate for gluing to avoid leaving glue marks on the product's exterior surface. The molten glue is injected into the inner surface of the product through the submerged glue channel, thus avoiding leaving glue marks on the product's exterior surface.

[0003] In existing technology, injection molds typically have a slide block with a gating system, a delivery system, and a submarine runner. The gating system receives molten plastic, the delivery system connects the gating system and the submarine runner, and the submarine runner can communicate with the mold cavity to allow for submarine injection. After demolding, cold material remains in the gating system, delivery system, and submarine runner. This cold material is formed by the cooling and solidification of the molten plastic.

[0004] However, the cold material remaining in the inlet runner, delivery runner, and submerged runner is molded into a single unit. This cold material is essentially embedded in the slide seat, making it difficult for workers to remove the entire cold material. This causes inconvenience in injection molding production, reduces production efficiency, and affects normal production. Utility Model Content

[0005] The purpose of this invention is to provide a submersible injection mold that facilitates the separation of cold material from the runner, aiming to solve or at least partially solve the shortcomings of the aforementioned background technology. It can separate the cold material remaining in the runner of the slide seat so that workers can easily remove it, thereby improving production efficiency and ensuring normal production.

[0006] This utility model provides a submerged injection mold for convenient separation of cold material in the runner channel. It includes, from top to bottom, an upper mold fixing plate, a sprue plate, an upper mold, a lower mold, and an ejector plate. A nozzle is provided on the upper mold fixing plate, penetrating downwards through the sprue plate. A runner channel is provided through the upper mold. A mold cavity for molding the product is provided between the upper and lower molds. It also includes a sliding seat slidably mounted on the lower mold and a sprue ejector pin penetrating the lower mold. The sliding seat has a runner channel, including a gating channel, a conveying channel, and a submerged injection channel, with the conveying channel and the submerged injection channel connected. The sliding seat includes a first slider and a second slider. The first slider has a gating channel, and the second slider has a conveying channel and a submerged injection channel. The gating channel has a gating inlet. The first slider has an ejector pin hole penetrating downwards from the gating inlet. The upper part of the sprue ejector pin penetrates... The sprue ejector pin extends into the ejector hole via the second slider. The lower part of the sprue ejector pin is movably connected to the ejector plate. The first slider can slide laterally to move away from or close to the second slider and can drive the second slider to slide laterally. The sprue ejector pin follows the first slider and moves laterally. When the mold is closed, the first slider and the second slider are in contact. The nozzle, injection runner, sprue runner, delivery runner, submerged runner, and mold cavity are connected. The upper surface of the sprue ejector pin is flush with the upper edge of the ejector hole. During injection molding, the product is formed in the mold cavity, the first cold material is formed in the sprue runner, and the second cold material is formed together in the delivery runner and submerged runner. The product, the second cold material, and the first cold material are connected in sequence to form a whole. The sprue ejector pin abuts against the first cold material. During demolding, the sprue runner and the delivery runner separate, the submerged runner separates from the mold cavity, and the sprue ejector pin ejects the first cold material.

[0007] Furthermore, the sprue also has a connecting channel that communicates with the sprue. The inner diameter of the connecting channel is smaller than the maximum inner diameter of the sprue, and the inner diameter of the connecting channel is smaller than the inner diameter of the delivery channel. When the mold is closed, the connecting channel is connected to the delivery channel.

[0008] Furthermore, the lower mold and the second slider are respectively provided with a first movable hole and a second movable hole through them in the vertical direction, and the injection port, ejector pin hole, first movable hole and second movable hole are connected.

[0009] Furthermore, the ejector plate is provided with a connecting block that is movably connected to the nozzle ejector pin, and at least a portion of the connecting block is disposed within the first movable hole.

[0010] Furthermore, the bottom end of the nozzle ejector pin has a limiting part, and the top end of the connecting block is provided with a limiting groove that cooperates with the limiting part and extends laterally, and the limiting part can slide laterally along the limiting groove.

[0011] Furthermore, the bottom surface of the limiting part is hemispherical, the cross-section of the limiting groove is inverted T-shaped, and the bottom surface of the limiting part is slidably connected to the bottom wall of the limiting groove.

[0012] Furthermore, the first slider is provided with a guide sleeve at the lower end of the ejector pin hole, which is connected to the ejector pin hole, and the guide sleeve is movably disposed in the second movable hole.

[0013] Furthermore, the first slider is recessed with a mating groove, and the second slider is protruding with a mating block that mates with the mating groove, and the mating block is movably connected to the mating groove.

[0014] Furthermore, the lower mold is provided with a guide block extending laterally, and the second slider is provided with a guide groove that cooperates with the guide block, allowing the second slider to slide laterally on the lower mold along the guide block.

[0015] Furthermore, the glue inlet channel includes two gating channels, two conveying channels, two submerged glue channels, and an auxiliary channel. The two gating channels are symmetrically arranged on the first slider, and the two conveying channels and two submerged glue channels are symmetrically arranged on the second slider. The auxiliary channel is located on the edge of the second slider near the first slider, and both ends of the auxiliary channel are connected to the two conveying channels respectively.

[0016] This utility model provides a submerged injection mold for convenient separation of cold material in the runner system. Through the coordinated action of a first and second slider, the first and second sliders first separate from each other, and then the first slider drives the second slider away from the mold cavity, achieving separation of the first and second cold materials, as well as the separation of the second cold material from the product. Through the cooperation of the ejector plate, the sprue ejector pin, and the first slider, the sprue ejector pin can smoothly and independently eject the first cold material, which is difficult to remove manually, during demolding. In summary, this utility model provides a submerged injection mold for convenient separation of cold material in the runner system, achieving separation of the first and second cold materials and the product, as well as ejection of the first cold material. This facilitates the removal of the first and second cold materials by operators, thereby improving production efficiency and ensuring normal production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of a submersible injection mold for convenient separation of cold material in the runner, as shown in the mold closing diagram.

[0019] Figure 2 This is a cross-sectional view of a submerged injection mold for convenient separation of cold material in the runner during injection molding, according to the present invention.

[0020] Figure 3This is a cross-section of a submersible injection mold for convenient separation of cold material in the runner during demolding, according to the present invention. Figure 1 .

[0021] Figure 4 This is a cross-section of a submersible injection mold for convenient separation of cold material in the runner during demolding, according to the present invention. Figure 2 .

[0022] Figure 5 for Figure 1 A magnified diagram of point A in the middle.

[0023] Figure 6 for Figure 2 A magnified diagram of point B in the middle.

[0024] Figure 7 for Figure 3 A magnified diagram of point C.

[0025] Figure 8 for Figure 1 The top view of the row position shown.

[0026] Figure 9 for Figure 8 The exploded three-dimensional view of the row position seat is shown.

[0027] Figure 10 for Figure 9 A perspective view of the first slider shown.

[0028] Figure 11 This is a schematic diagram of the second slider and guide block of this utility model in action.

[0029] Figure 12 This is a schematic diagram showing the cooperation between the sprue pin and the connecting block of this utility model.

[0030] Figure 13 for Figure 6 The diagram shows a three-dimensional view of the first, second, and third cold materials connected together.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 10. Upper mold fixing plate; 100. First cold slug; 101. Inlet section; 102. Connecting section; 11. Sprue; 20. Sprue plate; 200. Second cold slug; 201. Conveying section; 202. Outlet section; 30. Upper mold; 300. Third cold slug; 31. Injection channel; 32. Angled guide post; 40. Lower mold; 41. First movable hole; 42. Guide block; 50. Ejector plate; 51. Connecting block; 511. Limiting groove; 52. Bracket; 60. Sliding seat; 61. First slider; 6 11. First mating surface; 612. Ejector pin hole; 613. Guide sleeve; 614. Mating groove; 62. Second slider; 621. Second mating surface; 622. Second movable hole; 623. Mating block; 624. Guide groove; 63. Inlet runner; 631. Sprue runner; 6311. Inlet; 6312. Connecting channel; 632. Conveying runner; 633. Submerged runner; 634. Auxiliary runner; 70. Sprue pin; 71. Limiting part; 80. Mold cavity; 90. Product. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0035] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0036] Please see Figures 1-7 A submersible injection mold for facilitating the separation of cold material from the runner includes an upper mold fixing plate 10, a sprue plate 20, an upper mold 30, a lower mold 40, and an ejector plate 50 arranged sequentially from top to bottom. The upper mold fixing plate 10 is provided with a nozzle 11, which penetrates downward through the sprue plate 20. The upper mold 30 is provided with an injection runner 31. A mold cavity 80 for molding a product 90 is provided between the upper mold 30 and the lower mold 40.

[0037] The submersible injection mold that facilitates the separation of cold material from the runner also includes a slide seat 60 that slides on the lower mold 40 and a sprue ejector pin 70 that penetrates the lower mold 40.

[0038] The slide seat 60 is provided with a gating channel 63, which includes a sprue channel 631, a conveying channel 632, and a submersible gating channel 633. The conveying channel 632 and the submersible gating channel 633 are connected. The slide seat 60 includes a first slider 61 and a second slider 62. The first slider 61 is provided with the sprue channel 631, and the second slider 62 is provided with the conveying channel 632 and the submersible gating channel 633. The sprue channel 631 has a gating inlet 6311, and the first slider 61 has an ejector pin hole 612 extending downward through the gating inlet 6311. More specifically, the sprue channel 631 is located on the upper surface of the first slider 61, and the conveying channel 632 is located on the upper surface of the second slider 62. The upper mold 30 drives the first slider 61 to slide laterally via the inclined guide post 32.

[0039] The upper part of the sprue ejector pin 70 passes through the second slider 62 and extends into the ejector pin hole 612. The lower part of the sprue ejector pin 70 is movably connected to the ejector plate 50. The first slider 61 can slide laterally to move away from or close to the second slider 62 and can drive the second slider 62 to slide laterally. The sprue ejector pin 70 follows the first slider 61 to move laterally.

[0040] When the mold is closed, the first slider 61 and the second slider 62 are in contact, and the nozzle 11, the injection channel 31, the sprue channel 631, the delivery channel 632, the submerged injection channel 633, and the mold cavity 80 are connected. The upper surface of the sprue pin 70 is flush with the upper edge of the pin hole 612.

[0041] During injection molding, product 90 is formed in mold cavity 80, first cold slub 100 is formed in sprue 631, and second cold slub 200 is formed together in delivery sprue 632 and submerged sprue 633. Product 90, second cold slub 200 and first cold slub 100 are connected in sequence to form a whole, and sprue ejector pin 70 abuts against first cold slub 100.

[0042] During demolding, the first slider 61 moves away from the second slider 62, the sprue 631 separates from the delivery sprue 632, and the first cold sprue 100 and the second cold sprue 200 are disconnected. Then, the first slider 61 drives the second slider 62 away from the mold cavity 80, the submerged sprue 633 separates from the mold cavity 80, the second cold sprue 200 is disconnected from the product 90, and the sprue ejector pin 70 ejects the first cold sprue 100.

[0043] It should be noted that, due to the depth of the gate 6311, the first cold material 100 is difficult to remove manually, while the second cold material 200 is easier to remove manually. Therefore, the second cold material 200 does not need to be removed by an additional ejector pin structure to avoid complicating the mold structure.

[0044] As described above, the submerged injection mold for convenient separation of cold material in the runner system provided by this utility model, through the actuation of the first slider 61 and the second slider 62, allows the first slider 61 and the second slider 62 to first separate from each other, and then the first slider 61 drives the second slider 62 away from the mold cavity 80, thereby achieving the separation of the first cold material 100 and the second cold material 200, as well as the separation of the second cold material 200 from the product 90. Through the cooperation of the ejector plate 50, the sprue ejector pin 70, and the first slider 61, the sprue ejector pin 70 can smoothly and independently eject the first cold material 100, which is difficult to remove manually, during demolding. In summary, the submerged injection mold for convenient separation of cold material in the runner system provided by this utility model can achieve the separation of the first cold material 100, the second cold material 200, and the product 90, as well as the ejection of the first cold material 100, making it convenient for workers to remove the first cold material 100 and the second cold material 200, thereby improving production efficiency and ensuring normal production.

[0045] Please see Figure 8 , Figure 9 and Figure 13 The inlet runner 631 also has a connecting channel 6312 that communicates with the inlet 6311. More specifically, the first cold slug 100 has an inlet section 101 and a connecting section 102, and the second cold slug 200 has a conveying section 201 and an outlet section 202. During injection molding, the inlet 6311 and the connecting channel 6312 are respectively formed with the inlet section 101 and the connecting section 102, and the conveying runner 632 and the submersible runner 633 are respectively formed with the conveying section 201 and the outlet section 202. The inlet section 101, the connecting section 102, the conveying section 201, and the outlet section 202 are connected in sequence.

[0046] In this embodiment, the cross-section of the injection port 6311 is circular. Therefore, the inner diameter of the connecting channel 6312 is smaller than the maximum inner diameter of the injection port 6311, and the inner diameter of the connecting channel 6312 is smaller than the inner diameter of the conveying channel 632. During mold closing, the connecting channel 6312 is connected to the conveying channel 632. Correspondingly, the outer diameter of the connecting section 102 is smaller than the maximum outer diameter of the injection section 101, and the outer diameter of the connecting section 102 is smaller than the outer diameter of the conveying section 201. This arrangement allows the first cold material 100 to move away from the second cold material 200 when the first slider 61 moves away from the second slider 62. Furthermore, the narrowing design of the connecting section 102 makes it easier to break at the connecting section 102, which helps to separate the first cold material 100 and the second cold material 200, thereby achieving the separation of the first cold material 100 and the second cold material 200.

[0047] Please see Figures 2-4 The lower mold 40 and the second slider 62 are respectively provided with a first movable hole 41 and a second movable hole 622 through them vertically. The glue inlet 6311, the ejector pin hole 612, the first movable hole 41 and the second movable hole 622 are connected.

[0048] More specifically, the sprue ejector pin 70 passes through the first movable hole 41 and the second movable hole 622 in sequence to be movably connected with the ejector pin hole 612, and the sprue ejector pin 70 can move laterally within the first movable hole 41 and the second movable hole 622 under the drive of the first slider 61.

[0049] Please see Figures 1-4 and Figure 12 The ejector plate 50 is provided with a connecting block 51 that is movably connected to the sprue ejector pin 70, and at least a portion of the connecting block 51 is disposed within the first movable hole 41. More specifically, the connecting block 51 is fixed to the ejector plate 50 by a bracket 52. When the sprue ejector pin 70 moves laterally with the first slider 61, the lower part of the sprue ejector pin 70 slides on the connecting block 51; during demolding, the ejector plate 50 drives the connecting block 51 to move upward to push the sprue ejector pin 70 out of the first cold material 100. The provision of the connecting block 51 can shorten the overall length of the sprue ejector pin 70, thereby preventing the sprue ejector pin 70 from bending, deforming, or breaking due to resistance during lateral movement.

[0050] Furthermore, the bottom end of the sprue ejector pin 70 has a limiting part 71, and the top end of the connecting block 51 is provided with a limiting groove 511 that cooperates with the limiting part 71 and extends laterally. The limiting part 71 can slide laterally along the limiting groove 511. Through the cooperation between the limiting part 71 and the limiting groove 511, the sprue ejector pin 70 can be prevented from separating from the connecting block 51.

[0051] Furthermore, the bottom surface of the limiting part 71 is hemispherical, and the cross-section of the limiting groove 511 is inverted T-shaped. The bottom surface of the limiting part 71 is slidably connected to the bottom wall of the limiting groove 511. The spherical bottom surface of the limiting part 71 reduces the contact area between the bottom surface of the limiting part 71 and the bottom wall of the limiting groove 511, thereby reducing the friction between the bottom surface of the limiting part 71 and the bottom wall of the limiting groove 511. This allows for smooth sliding of the sprue ejector pin 70 and prevents excessive friction between the bottom surface of the limiting part 71 and the bottom wall of the limiting groove 511, which could lead to bending, deformation, or breakage of the sprue ejector pin 70.

[0052] Please see Figure 3 , Figure 9 and Figure 10 The first slider 61 has a guide sleeve 613 at its lower end, which communicates with the ejector hole 612. The guide sleeve 613 is movably disposed within the second movable hole 622. The sprue ejector pin 70 passes through the guide sleeve 613 and extends into the ejector hole 612. When the first slider 61 moves laterally, the guide sleeve 613 moves laterally within the second movable hole 622, and the sprue ejector pin 70 follows the lateral movement of the guide sleeve 613. The guide sleeve 613 not only prevents the sprue ejector pin 70 from falling out of the ejector hole 612, but also guides the sliding of the first slider 61 in conjunction with the second movable hole 622.

[0053] Please see Figures 9-11 The first slider 61 has a first mating surface 611 that mates with the second slider 62, and the second slider 62 has a second mating surface 621 that mates with the first slider 61. The first slider 61 has a recessed mating groove 614 on the first mating surface 611, and the second slider 62 has a protruding mating block 623 on the second mating surface 621 that mates with the mating groove 614. The mating block 623 is movably connected to the mating groove 614.

[0054] During demolding, the first slider 61 slides away from the second slider 62. At this time, the mating groove 614 and the mating block 623 are not in contact, and the second slider 62 remains stationary. After the first slider 61 slides a certain distance, the mating block 623 abuts against the mating groove 614. Subsequently, the first slider 61 drives the second slider 62 to slide together away from the mold cavity 80. Through the cooperation of the mating groove 614 and the mating block 623, the secondary actuation of the slide seat 60 can be realized, thereby realizing the separation of the first cold material 100 and the second cold material 200, as well as the separation of the second cold material 200 and the product 90.

[0055] More specifically, the lower mold 40 is provided with a guide block 42 extending laterally, and the second slider 62 is provided with a guide groove 624 that cooperates with the guide block 42. The second slider 62 can slide laterally on the lower mold 40 along the guide block 42. In this embodiment, the cross-section of the guide block 42 is T-shaped, and the cross-section of the guide groove 624 is also T-shaped. Through the cooperation of the guide block 42 and the guide groove 624, the second slider 62 can be guided, making the sliding of the second slider 62 more stable and avoiding the second cold material 200 from the product 90 being difficult to separate due to uneven force, thus affecting normal production.

[0056] Please see Figure 8 and Figure 9 In this embodiment, the glue inlet channel 63 includes two gating channels 631, two conveying channels 632, two submersible glue inlet channels 633, and an auxiliary channel 634. The two gating channels 631 are symmetrically arranged on the first slider 61, the two conveying channels 632 and the two submersible glue inlet channels 633 are respectively symmetrically arranged on the second slider 62, and the auxiliary channel 634 is located on the edge of the second slider 62 near the first slider 61, and the two ends of the auxiliary channel 634 are respectively connected to the two conveying channels 632.

[0057] More specifically, during injection molding, the molten rubber flows simultaneously through the inlet runner 631 and the auxiliary runner 634 to the delivery runner 632. The auxiliary runner 634 then increases the injection speed. During injection molding, a third cold material 300 is formed within the auxiliary runner 634. Both ends of the third cold material 300 are connected to the first cold material 100 and the second cold material 200. During demolding, the first slider 61 moves away from the second slider 62. Since the auxiliary runner 634 is located at the edge of the second slider 62 near the first slider 61, the third cold material 300 automatically separates from the first slider 61 without the need for tearing. Furthermore, the third cold material 300 can be manually removed along with the second cold material 200.

[0058] The working process of the submerged injection mold in this embodiment, which facilitates the separation of cold material in the runner, is as follows:

[0059] (1) Please refer to Figure 1 and Figure 5 When the mold is closed, the first slider 61 and the second slider 62 are in contact with each other. The nozzle 11, the injection channel 31, the sprue channel 631, the delivery channel 632, the submerged injection channel 633, the auxiliary channel 634, and the mold cavity 80 are connected. The upper surface of the sprue pin 70 is flush with the upper edge of the pin hole 612.

[0060] (2) Please refer to Figure 2 and Figure 6 During injection molding, product 90 is formed in mold cavity 80, first cold slub 100 is formed in sprue 631, second cold slub 200 is formed together in delivery sprue 632 and submerged sprue 633, and third cold slub 300 is formed in auxiliary sprue 634. First cold slub 100, second cold slub 200, third cold slub 300 and product 90 are connected to form a whole. At this time, the upper surface of sprue ejector pin 70 abuts against the lower surface of first cold slub 100.

[0061] (3) Please refer to Figure 3 , Figure 4 and Figure 7 During demolding, the first slider 61 slides away from the second slider 62, causing the first cold material 100 to move away from the second cold material 200 and the third cold material 300, thus disconnecting the first cold material 100 from the second cold material 200 and the third cold material 300 respectively. Then, the first slider 61 drives the second slider 62 to slide away from the mold cavity 80, causing the second cold material 200 and the third cold material 300 to move away from the product 90, thus disconnecting the second cold material 200 from the product 90. Finally, the ejector plate 50 moves the sprue ejector pin 70 upward to eject the first cold material 100. Since the second cold material 200 and the third cold material 300 are in a connected state, they can be manually removed together. Additionally, the product 90 is ejected by the angled ejector and ejector pins.

[0062] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A submersible injection mold for convenient separation of cold material from runners, comprising, from top to bottom, an upper mold fixing plate (10), a sprue plate (20), an upper mold (30), a lower mold (40), and an ejector plate (50), wherein the upper mold fixing plate (10) is provided with a nozzle (11), the nozzle (11) penetrates downward through the sprue plate (20), the upper mold (30) is provided with a runner (31), and a mold cavity (80) for molding a product (90) is provided between the upper mold (30) and the lower mold (40), characterized in that, It also includes a slide seat (60) sliding on the lower mold (40) and a sprue ejector pin (70) penetrating the lower mold (40). The slide seat (60) is provided with a glue inlet channel (63), which includes a gating channel (631), a conveying channel (632), and a submersible glue inlet channel (633). The conveying channel (632) is connected to the submersible glue inlet channel (633). The slide seat (60) includes a first slider (61) and a second slider (62). The first slider (61) is provided with the gating channel (631), and the second slider (62) is provided with the conveying channel (632). The submerged glue channel (633) and the inlet channel (631) have glue inlet (6311). The first slider (61) has a pin hole (612) extending downward through the glue inlet (6311). The upper part of the sprue pin (70) passes through the second slider (62) and extends into the pin hole (612). The lower part of the sprue pin (70) is movably connected to the pin plate (50). The first slider (61) can slide laterally to move away from or close to the second slider (62) and can drive the second slider (62) to slide laterally. The sprue pin (70) follows the first slider (61) to move laterally. When the mold is closed, the first slider (61) and the second slider (62) are in contact, and the nozzle (11), the injection channel (31), the sprue channel (631), the delivery channel (632), the submerged injection channel (633), and the mold cavity (80) are connected. The upper surface of the sprue pin (70) is flush with the upper edge of the pin hole (612). During injection molding, the product (90) is formed in the mold cavity (80), the first cold material (100) is formed in the gating channel (631), and the second cold material (200) is formed together in the conveying channel (632) and the submerged glue channel (633). The product (90), the second cold material (200), and the first cold material (100) are sequentially connected to form a whole, and the sprue ejector pin (70) abuts against the first cold material (100). During demolding, the sprue (631) separates from the delivery sprue (632), the submerged glue sprue (633) separates from the mold cavity (80), and the sprue ejector pin (70) ejects the first cold material (100).

2. The submersible injection mold for convenient separation of cold material in the runner system as described in claim 1, characterized in that, The gating channel (631) also has a connecting channel (6312) that communicates with the sprue (6311). The inner diameter of the connecting channel (6312) is smaller than the maximum inner diameter of the sprue (6311), and the inner diameter of the connecting channel (6312) is smaller than the inner diameter of the conveying channel (632). When the mold is closed, the connecting channel (6312) communicates with the conveying channel (632).

3. The submersible injection mold for convenient separation of cold material in the runner as described in claim 1, characterized in that, The lower mold (40) and the second slider (62) are respectively provided with a first movable hole (41) and a second movable hole (622) through them vertically. The glue inlet (6311), the ejector pin hole (612), the first movable hole (41) and the second movable hole (622) are connected.

4. The submersible injection mold for convenient separation of cold material in the runner as described in claim 3, characterized in that, The ejector plate (50) is provided with a connecting block (51) that is movably connected to the nozzle ejector (70), and at least a portion of the connecting block (51) is disposed within the first movable hole (41).

5. The submersible injection mold for convenient separation of cold material in the runner as described in claim 4, characterized in that, The bottom end of the nozzle pin (70) has a limiting part (71), and the top end of the connecting block (51) is provided with a limiting groove (511) that cooperates with the limiting part (71) and extends laterally. The limiting part (71) can slide laterally along the limiting groove (511).

6. The submersible injection mold for convenient separation of cold material in the runner as described in claim 5, characterized in that, The bottom surface of the limiting part (71) is hemispherical, the cross section of the limiting groove (511) is inverted T-shaped, and the bottom surface of the limiting part (71) is slidably connected to the bottom wall of the limiting groove (511).

7. The submersible injection mold for convenient separation of cold material in the runner as described in claim 3, characterized in that, The first slider (61) is provided with a guide sleeve (613) at the lower end of the ejector hole (612) and communicates with the ejector hole (612). The guide sleeve (613) is movably disposed in the second movable hole (622).

8. The submersible injection mold for convenient separation of cold material in the runner as described in claim 1, characterized in that, The first slider (61) has a recessed groove (614), and the second slider (62) has a protruding mating block (623) that mates with the mating groove (614). The mating block (623) is movably connected to the mating groove (614).

9. The submersible injection mold for convenient separation of cold material in the runner as described in claim 1, characterized in that, The lower mold (40) is provided with a guide block (42) extending laterally, and the second slider (62) is provided with a guide groove (624) that cooperates with the guide block (42). The second slider (62) can slide laterally on the lower mold (40) along the guide block (42).

10. The submersible injection mold for convenient separation of cold material in the runner as described in claim 1, characterized in that, The glue inlet channel (63) includes two gating channels (631), two conveying channels (632), two submersible glue channels (633), and an auxiliary channel (634). The two gating channels (631) are symmetrically arranged on the first slider (61). The two conveying channels (632) and the two submersible glue channels (633) are respectively symmetrically arranged on the second slider (62). The auxiliary channel (634) is located on the edge of the second slider (62) near the first slider (61), and the two ends of the auxiliary channel (634) are respectively connected to the two conveying channels (632).

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