Injection mold

Abstract

The utility model relates to the technical field of molds, in particular to an injection mold. The injection mold comprises an upper fixing plate, a stripper plate, an upper mold plate and a lower mold plate, the stripper plate and the upper mold plate are connected through a first guide rod, a part of structure of the first guide rod extends into the lower mold plate, the stripper plate and the first guide rod can move relative to the upper mold plate, the injection mold has a mold closing state and a mold opening state, and the mold opening state further comprises a material breaking state and a material stripping state. In the mold closing state, the stripper plate is clamped between the upper mold plate and the upper fixing plate, and in the material breaking state, the upper fixing plate and the stripper plate move towards the side away from the upper mold plate, and the stripper plate is separated from residual materials connected in the upper mold plate. And in the stripping state, the stripping plate moves to the preset position, the first guide rod can limit the stripping plate to continue to move, the stripping plate drives the residual material to be separated from the upper fixing plate, and the residual material is separated from the stripping plate under the gravity of the residual material. According to the invention, the automatic falling of the residual material is realized, the problem that the residual material is clamped in the plate and is difficult to take is solved, and the production efficiency is improved.

Description

Technical Field

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

[0002] Molds are an indispensable tool in injection molding. Injection molding is a processing method in which hot molten plastic material is injected at high speed into a sealed cavity with the desired shape in a mold. After the plastic material cools and solidifies, the mold is opened and the solidified plastic product is ejected to obtain the molded product.

[0003] However, after the injection molding mold is opened, the waste material cannot fall off by itself and needs to be separated manually, which increases the production steps and poses safety hazards. Utility Model Content

[0004] This application provides an injection mold designed to automatically remove residual material from the mold runner.

[0005] This application provides an injection mold, which includes an upper fixing plate, a stripper plate, an upper template, and a lower template;

[0006] The stripping plate and the upper template are connected by a first guide rod, and a portion of the first guide rod extends into the lower template. The stripping plate and the first guide rod are movable relative to the upper template.

[0007] The injection mold has a mold-closed state and a mold-open state, and the mold-open state further includes a material-cut-off state and a material-removal state.

[0008] In the mold-closed state, the stripper plate is sandwiched between the upper mold plate and the upper fixing plate;

[0009] In the material-cut state, the upper fixing plate and the stripping plate move toward the side away from the upper template, and the stripping plate separates from the residual material connected inside the upper template;

[0010] In the unloading state, the unloading plate moves to a preset position, the first guide rod can restrict the unloading plate from continuing to move, the unloading plate drives the residual material to separate from the upper fixed plate, and the residual material detaches from the unloading plate under its own gravity.

[0011] In this embodiment, the residual material is divided into a first part of the residual material located in the upper fixing plate and the stripping plate, and a second part of the residual material located in the upper template.

[0012] During mold opening, the first portion of waste material is pulled to one side of the stripper plate. Then, through the separation of the stripper plate from the fixed plate, the stripper plate pulls the first portion of residual material away from the upper fixed plate, thus clearing the residual material located inside the upper fixed plate. At the same time, the first portion of residual material can automatically fall off under its own weight. This embodiment achieves automatic material removal by setting a stripper plate between the upper fixed plate and the upper mold plate, solving the problem of residual material being stuck inside the plate and difficult to remove, eliminating the need for manual waste removal, reducing safety hazards, and improving production efficiency.

[0013] In one possible design, the upper fixing plate, the stripping plate, and the upper template are joined together to form a main flow channel;

[0014] The upper template and the lower template are joined together to form a cavity, and the main flow channel is connected to the cavity;

[0015] The injection mold further includes a first stripper rod and a second stripper rod. One end of the first stripper rod is connected to the upper fixed plate, and the other end extends through the stripper plate into the main flow channel. One end of the second stripper rod is connected to the lower mold plate, and the other end extends into the cavity.

[0016] In the material cut-off state, the first stripping rod and the second stripping rod can pull the stripping plate to separate the residual material connected to the upper template.

[0017] In this embodiment, by setting a first stripper rod and a second stripper rod to connect the residual material, when the mold is opened, the first stripper rod and the second stripper rod pull the portion of the residual material they are connected to, and apply a force to the residual material to move away from each other, so that the residual material can be torn off, so that the residual material located in the upper fixed plate and the stripper plate can be removed together.

[0018] In one possible design, along the mold opening direction of the injection mold, the first stripper bar and the second stripper bar are arranged opposite to each other, and the cross-sectional area of ​​the first stripper bar is larger than the cross-sectional area of ​​the second stripper bar.

[0019] In this embodiment, the connection force between the first stripping rod and the portion of the residual material it is connected to is greater than the connection force between the second stripping rod and the portion of the residual material it is connected to, so that the residual material is torn off at the position below the first stripping rod, so that the residual material in the stripping plate and the upper fixed plate is pulled to the same side by the first stripping rod.

[0020] By limiting the pulling force of the first stripping rod on the residual material to be greater than that of the second stripping rod on the residual material, a portion of the residual material (the first portion of the residual material) can be broken off by the first stripping rod, thereby facilitating the unified cleaning of the residual material located in the upper fixed plate and the stripping plate.

[0021] In one possible design, the main flow channel includes a transition flow channel disposed on the side of the upper template near the stripper plate;

[0022] The end of the first stripping rod away from the upper fixed plate is located in the transition channel and is connected to the residual material in the transition channel;

[0023] The first stripping rod is connected to the residual material. Under the pulling force of the first stripping rod, the residual material can support the stripping plate and the fixed plate to move synchronously.

[0024] In this embodiment, since the pulling force applied by the first stripping rod to the portion of residual material connected to it is greater than the pulling force applied by the second stripping rod to the portion of residual material connected to it, it is ensured that the first portion of residual material and the second portion of residual material are disconnected at the connection between the transition channel and the branch channel, or that the first portion of residual material and the second portion of residual material are disconnected at the branch channel, so that the first stripping rod can maintain connection with the first portion of residual material, thereby enabling the first stripping rod to apply a pulling force to the first portion of residual material, and enabling the first portion of residual material to clamp the stripping plate and adhere to the fixing plate.

[0025] When the stripper plate moves to the limit position of the first guide rod, the first guide rod limits the movement of the stripper plate. At this time, the pulling force exerted by the first guide rod on the stripper plate is greater than the pulling force exerted by the first stripper rod and the upper fixing plate on the first part of the residual material. At the same time, as the upper fixing plate moves, the first part of the residual material detaches from the first stripper rod. The first part of the residual material can no longer support the stripper plate and the upper fixing plate to move together, and the stripper plate separates from the upper fixing plate.

[0026] In one possible design, the cavity includes a tail hole that connects the flow channel and the cavity;

[0027] The end of the second stripping rod near the upper template is located inside the tail hole.

[0028] In this embodiment, the end of the second stripper rod near the upper template is located inside the tail hole, which is generally set at the position where the product is provided with a hook hole, thereby reducing the damage to the product caused by the second stripper rod.

[0029] In one possible design, in the stripping state, the end of the first guide rod away from the stripping plate abuts against the upper template to restrict the movement of the stripping plate relative to the upper template.

[0030] In this embodiment, the first guide rod has a first limiting part, and the upper template is provided with a first abutting part on the side away from the stripping plate. When the first guide rod moves with the stripping plate to the point where the first limiting part abuts against the first abutting part, the first guide rod reaches its limit position, that is, the first guide rod restricts the stripping rod from moving relative to the upper template, thereby separating the stripping plate and the upper fixing plate.

[0031] In one possible design, the upper fixing plate is connected to the stripping plate via a second guide rod, and the stripping plate is able to move along the second guide rod.

[0032] In the stripping state, the end of the second guide rod away from the upper fixed plate abuts against the stripping plate to prevent the stripping plate from falling.

[0033] In this embodiment, the second guide rod has a second limiting part, and the stripping plate is provided with a second abutting part on the side away from the upper fixed plate. When the stripping plate moves to the point where the second limiting part abuts against the second abutting part, the second guide rod reaches its limit position, that is, the second guide rod restricts the stripping plate from moving relative to the upper fixed plate.

[0034] In one possible design, the injection mold further includes a damping element, one end of which is fixed to the lower mold plate and the other end is inserted into the upper mold plate;

[0035] The damping element can lock the upper template and the lower template, and the damping force applied by the damping element to the upper template is greater than the demolding resistance of the residual material in the stripper plate, so that the stripper plate drives the residual material to separate from the upper fixing plate.

[0036] In this embodiment, the length of the first guide rod is limited. When the stripper plate moves the first guide rod to its limit position where it abuts against the upper mold plate, the damping component applies a certain damping force to the upper mold plate, restricting the first guide rod from moving further away from the upper mold plate, thereby restricting the stripper plate from moving further away from the upper mold plate. Simultaneously, the damping force applied by the damping component to the upper mold plate is greater than the demolding resistance of the first portion of the residual material (i.e., the tension between the first stripper rod and the sprue sleeve and the first portion of the residual material), causing the stripper plate to separate from the upper fixed plate. The first portion of the residual material detaches from the first stripper rod and the sprue sleeve, thus allowing the first portion of the residual material to detach from the stripper plate under its own weight, achieving automatic stripping.

[0037] In one possible design, when the tension applied to the upper mold plate is greater than the damping force applied to the upper mold plate by the damping element, the upper mold plate moves away from the lower mold plate, and the injection mold is in the part removal state.

[0038] In this embodiment, the upper fixing plate is pulled continuously in the stripping state. The upper fixing plate, through the second guide rod, the stripping plate, the first guide rod, and the pulling upper template, makes the pulling force applied to the upper template greater than the damping force applied to the upper template by the damping component. That is, the upper template can be pulled to move away from the lower template, thereby separating the upper template from the lower template and opening the injection mold to the part removal state so that the operator can use the robot arm to remove the part.

[0039] In one possible design, a reinforcing block is embedded on the side of the stripper plate away from the upper fixing plate, and a portion of the reinforcing block protrudes from the stripper plate.

[0040] The upper template is provided with a recessed portion, which can cooperate with the protruding portion of the reinforcing block.

[0041] In this embodiment of the application, during the mold closing process of the injection mold, the reinforcing block can guide the mold closing of the stripper plate and the upper template, thereby improving the accuracy and stability of the mold closing of the stripper plate and the upper template.

[0042] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the injection mold provided in this application in the mold-closed state.

[0044] Figure 2 for Figure 1 A cross-sectional view;

[0045] Figure 3 for Figure 1 A cross-sectional view from another perspective;

[0046] Figure 4 for Figure 3 Enlarged diagram of section A in the middle;

[0047] Figure 5 A schematic diagram of the structure of the injection mold provided in this application in the state of material interruption when the mold is opened;

[0048] Figure 6 for Figure 5 A cross-sectional view;

[0049] Figure 7 A schematic diagram of the structure of the injection mold provided in this application in the stripping state when the mold is opened;

[0050] Figure 8 for Figure 7 A cross-sectional view;

[0051] Figure 9 A schematic diagram of the structure of the injection mold provided in this application in the part-removal state when the mold is opened;

[0052] Figure 10 for Figure 9 A cross-sectional view.

[0053] Figure label:

[0054] 10 - Injection mold;

[0055] 10a - Main flow channel;

[0056] 10a1 - Mainstream Road;

[0057] 10a2 - Transition channel;

[0058] 10a3 - Diversion channel;

[0059] 10b-cavity;

[0060] 10b1 - Upper cavity;

[0061] 10b2 - Lower cavity;

[0062] 10b3 - Tailhole;

[0063] 11-Upper fixing plate;

[0064] 11a - Sprue sleeve;

[0065] 111 - First stripper bar;

[0066] 112 - Second guide rod;

[0067] 12-Stripping plate;

[0068] 121-Reinforcing Block;

[0069] 13-Use the template;

[0070] 131 - Depression;

[0071] 14-Below template;

[0072] 141 - First guide rod;

[0073] 142 - Second stripper bar;

[0074] 143 - Damping component;

[0075] 15-Lower fixing plate;

[0076] 20 - Residual material;

[0077] 21-First part of the residue;

[0078] 22-Second part of the residue.

[0079] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0080] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0081] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0082] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0083] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0084] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0085] like Figure 1 The diagram shows the injection mold 10 in the mold-closed state. The injection mold 10 includes an upper fixing plate 11, a stripper plate 12, an upper template 13, a lower template 14, and a lower fixing plate 15 arranged sequentially from top to bottom.

[0086] Figure 2 The diagram shows a cross-sectional view of the injection mold 10. The lower fixed plate 15 is fixedly connected to the lower template 14. The stripper plate 12 and the upper template 13 are connected by a first guide rod 141, which extends downward into the lower template 14. Both ends of the first guide rod 141 can abut against the stripper plate 12 and the upper template 13, respectively. The stripper plate 12 is connected to the upper fixed plate 11 by a second guide rod 112, which can abut against the upper fixed plate 11 and the stripper plate 12, respectively.

[0087] Please continue to refer to this. Figure 2 The upper fixed plate 11 is equipped with a sprue sleeve 11a. The side of the sprue sleeve 11a away from the upper fixed plate 11 is set through the stripper plate 12. The sprue sleeve 11a has a main channel 10a1 inside.

[0088] Figure 3The image shown is a cross-sectional view of the injection mold 10 from another perspective. Figure 4 As shown Figure 3 Please refer to the enlarged diagram of section A in the middle. Figures 2 to 4 The upper mold plate 13 is provided with a connecting transition channel 10a2, a branch channel 10a3, and an upper cavity 10b1. The transition channel 10a2 is located on the side of the upper mold plate 13 near the stripper plate 12, and the upper cavity 10b1 is located on the side of the upper mold plate 13 near the lower mold plate 14. The lower mold plate 14 is provided with a lower cavity 10b2, which is located on the side of the lower mold plate 14 near the upper mold plate 13.

[0089] Please continue to refer to the reference. Figure 2 and Figure 4 The number of runners 10a3 and cavities 10b is the same, and each runner 10a3 is connected to the corresponding cavity 10b. When there are two or more runners 10a3 and cavities 10b, the transition runner 10a2 is the material diversion point. For example, when the injection mold 10 produces four products at the same time, the transition runner 10a2 can be set as an "H" shape or a "cross" shape.

[0090] When the upper fixing plate 11, the stripping plate 12 and the upper template 13 are attached and connected, the main flow channel 10a1, the transition flow channel 10a2 and the branch flow channel 10a3 are connected to form the main flow channel 10a. When the upper template 13 and the lower template 14 are attached and connected, the upper cavity 10b1 and the lower cavity 10b2 form the cavity 10b, and the main flow channel 10a is connected to the cavity 10b.

[0091] Specifically, the injection mold 10 has a closed state and an open state. The open state further includes a material cut-off state, a material stripping state, and a part removal state.

[0092] Please continue to refer to the reference. Figures 1 to 4 In the mold-closed state, the upper fixing plate 11, stripper plate 12, upper mold plate 13, and lower mold plate 14 are tightly fitted together in sequence. The sprue bushing 11a allows molten material to be introduced into the main runner 10a, and the molten material flows into the cavity 10b along the main runner 10a, ultimately forming the product within the cavity 10b. After the product is formed, the material located in the main runner 10a is the residual material 20.

[0093] like Figure 5 The diagram shown is a schematic of the material cut-off state when the injection mold 10 is opened. Figure 6 for Figure 5 sectional view diagram, Figure 7 This is a schematic diagram of the ejection state when injection mold 10 is opened. Figure 8 for Figure 7 Please refer to the sectional view diagram. Figures 5 to 8First, the upper fixing plate 11 and the stripping plate 12 move away from the upper template 13 under the action of external force. At this time, the residual material 20 connected to the stripping plate 12 and the upper template 13 is torn off and separated under the action of external force, forming a... Figure 6 The material breakage state is shown. That is, at this time, the residual material 20 is divided into a first part of residual material 21 located in the upper fixed plate 11 and the stripping plate 12 and a second part of residual material 22 located in the upper template 13.

[0094] Simultaneously, the stripper plate 12 drives the first guide rod 141 to move away from the upper template 13. When the stripper plate 12 drives the first guide rod 141 to the preset position (i.e., the extreme position where the first guide rod 141 abuts against the upper template 13), the first guide rod 141 can restrict the stripper plate 12 from continuing to move (the following describes in detail how the first guide rod restricts the stripper plate from continuing to move). At this time, the upper fixing plate 11 still moves away from the upper template 13 under the action of external force. The stripper plate 12 drives the first part of the residual material 21 to separate from the upper fixing plate 11. At the same time, the first part of the residual material 21 can detach from the stripper plate 12 under its own gravity and fall onto the upper end surface of the upper template 13, forming a shape like... Figure 8 The material removal status is shown.

[0095] In this embodiment, during mold opening, the first portion of waste material is first pulled to one side of the stripper plate 12. Then, through the separation of the stripper plate 12 from the fixed plate, the stripper plate 12 drives the first portion of residual material 21 to detach from the upper fixed plate 11, thereby clearing the residual material 20 located inside the upper fixed plate 11. At the same time, the first portion of residual material 21 can automatically fall off under its own weight. This embodiment, by setting the stripper plate 12 between the upper fixed plate 11 and the upper template 13, achieves automatic detachment of the residual material 20, solving the problem of the residual material 20 being stuck inside the plate and difficult to remove, eliminating the need for manual waste cleaning, reducing safety hazards, and improving production efficiency.

[0096] For more details, please refer to [link / reference]. Figure 4 The injection mold 10 also includes a first stripper rod 111 and a second stripper rod 142. One end of the first stripper rod 111 is connected to the upper fixed plate 11, and the other end extends through the stripper plate 12 into the transition flow channel 10a2, where the material in the flow channel covers the end of the first stripper rod 111. One end of the second stripper rod 142 is fixedly connected to the lower mold plate 14, and the other end extends into the cavity 10b, where the material in the cavity 10b covers the end of the second stripper rod 142.

[0097] Please refer to the reference. Figure 4 and Figure 6In the open mold state, the first stripper rod 111 and the second stripper rod 142 can pull the stripper plate 12 to separate the residual material 20 connected to the upper mold plate 13. That is, at the initial opening of the mold, the first stripper rod 111 and the second stripper rod 142 each pull the connected portion of the residual material 20, causing the residual material 20 to break into a first part of residual material 21 and a second part of residual material 22. The first stripper rod 111 pulls the first part of residual material 21 to move synchronously with the upper fixed plate 11 and the stripper plate 12, while the second part of residual material 22 remains in the upper mold plate 13.

[0098] In addition, please refer to the reference. Figure 6 and Figure 8 When the mold opening state transitions to the stripping state, since the first stripping rod 111 is fixedly connected to the upper fixed plate 11, at the same time as the stripping plate 12 separates from the upper fixed plate 11 (the following describes in detail how the stripping plate 12 separates from the upper fixed plate 11), the first part of the residual material 21 detaches from the first stripping rod 111, so that the tension applied to the first stripping rod 111 is less than its own weight, and the first part of the residual material 21 detaches from the stripping plate 12 under its own weight.

[0099] In this embodiment, by setting a first stripper rod 111 and a second stripper rod 142 to connect the residual material 20, when the mold is opened, the first stripper rod 111 and the second stripper rod 142 pull the portion of the residual material 20 connected to each other, and apply a force to the residual material 20 to move away from each other, so that the residual material 20 can be torn off, so that the residual material 20 located in the upper fixing plate 11 and the stripper plate 12 can be released together.

[0100] Along the mold opening direction C of the injection mold 10, the first stripper rod 111 and the second stripper rod 142 are arranged opposite to each other, and the cross-sectional area of ​​the first stripper rod 111 is larger than that of the second stripper rod 142. That is, the connection force between the first stripper rod 111 and the portion of the residual material 20 it is connected to is greater than the connection force between the second stripper rod 142 and the portion of the residual material 20 it is connected to, so that the residual material 20 is torn off below the first stripper rod 111, so that the residual material 20 in the stripper plate 12 and the upper fixing plate 11 is pulled to the same side by the first stripper rod 111.

[0101] In this embodiment, by limiting the pulling force of the first stripping rod 111 on the residual material 20 to be greater than the pulling force of the second stripping rod 142 on the residual material 20, a portion of the residual material 20 (the first portion of the residual material 21) can be broken off by the first stripping rod 111, thereby facilitating the unified cleaning of the residual material 20 located in the upper fixing plate 11 and the stripping plate 12.

[0102] Specifically, in the mold-closed state, the end of the first stripper rod 111 away from the fixed plate is located in the transition channel 10a2 and connected to the residual material 20 in the transition channel 10a2. In the material-cut-off state, since the pulling force applied by the first stripper rod 111 to the part of the residual material 20 connected to it is greater than the pulling force applied by the second stripper rod 142 to the part of the residual material 20 connected to it, it is ensured that the first part of the residual material 21 and the second part of the residual material 22 are disconnected at the connection between the transition channel 10a2 and the branch channel 10a3, or that the first part of the residual material 21 and the second part of the residual material 22 are disconnected at the branch channel 10a3, so that the first stripper rod 111 can maintain a partial connection with the first residual material 20, thereby enabling the first stripper rod 111 to apply a pulling force to the first part of the residual material 21, and the first part of the residual material 21 can clamp the stripper plate 12 and fit it against the fixed plate.

[0103] In other words, after the first part of the residual material 21 and the second part of the residual material 22 are disconnected, the first part of the residual material 21 is connected to the first stripping rod 111, so that under the pulling force applied by the first stripping rod 111 to the first part of the residual material 21, the first part of the residual material 21 can support the stripping plate 12 and the fixed plate to move synchronously.

[0104] Please continue to refer to this. Figure 8 When the stripper plate 12 moves to the limit position of the first guide rod 141, the first guide rod 141 limits the movement of the stripper plate 12. At this time, the pulling force applied by the first guide rod 141 to the stripper plate 12 is greater than the pulling force applied by the first stripper rod 111 and the upper fixing plate 11 to the first part of the residual material 21. At the same time, as the upper fixing plate 11 moves, the first part of the residual material 21 disengages from the first stripper rod 111. The first part of the residual material 21 can no longer support the stripper plate 12 to move together with the upper fixing plate 11, and the stripper plate 12 separates from the upper fixing plate 11.

[0105] Specifically, the first guide rod 141 has a first limiting part (not shown in the figure), and the upper template 13 is provided with a first abutting part (not shown in the figure) on the side away from the stripping plate 12. When the first guide rod 141 moves with the stripping plate 12 to the point where the first limiting part abuts against the first abutting part, the first guide rod 141 reaches its limit position. That is, the first guide rod 141 restricts the stripping rod from moving relative to the upper template 13, so that the first guide rod plays a guiding role while also having a limiting role.

[0106] Please continue to refer to this. Figure 8 In the unmolding state, after the stripper plate 12 separates from the upper fixed plate 11, the lower end face of the stripper plate 12 abuts against the lower end of the second guide rod 112. The second guide rod 112 can support the stripper plate 12 to prevent it from falling.

[0107] Specifically, the second guide rod 112 has a second limiting part (not shown in the figure), and the stripping plate 12 is provided with a second abutting part (not shown in the figure) on the side away from the upper fixed plate 11. When the stripping plate 12 moves to the point where the second limiting part abuts against the second abutting part, the second guide rod 112 reaches its limit position. That is, the second guide rod 112 restricts the stripping plate 12 from moving relative to the upper fixed plate 11, so that the second guide rod plays a guiding role while also having a limiting role.

[0108] Please continue to refer to this. Figure 8 The cavity 10b includes a material inlet tail hole 10b3, which connects the flow channel 10a3 and the cavity 10b. That is, the material enters the cavity 10b through the tail hole 10b3. The end of the second stripper rod 142 near the upper template 13 is located inside the tail hole 10b3. The tail hole 10b3 is generally positioned where the product has a hook hole, reducing the risk of damage to the product caused by the second stripper rod 142.

[0109] Please continue to refer to this. Figure 8 The injection mold 10 also includes a damping component 143, one end of which is fixed to the lower template 14 and the other end is inserted into the upper template 13.

[0110] Please refer to the reference. Figure 6 and Figure 8 In the material-cutting and stripping states of the injection mold 10, the damping element 143 can lock the upper mold plate 13 and the lower mold plate 14, preventing the upper mold plate 13 from moving relative to the lower mold plate 14 under damping action. Furthermore, when the stripper plate 12 moves to the limit position of the first guide rod 141, the damping force applied by the damping element 143 to the upper mold plate 13 is greater than the demolding resistance of the residual material 20 within the stripper plate 12, causing the stripper plate 12 to separate the residual material 20 from the fixed plate.

[0111] In other words, the length of the first guide rod 141 is limited. When the stripper plate 12 moves the first guide rod 141 to the limit position where the first guide rod 141 abuts against the upper mold plate 13, the damping element 143 applies a certain damping force to the upper mold plate 13, restricting the first guide rod 141 from moving further away from the upper mold plate 13, thereby restricting the stripper plate 12 from moving further away from the upper mold plate 13. At the same time, the damping force applied by the damping element 143 to the upper mold plate 13 is greater than the demolding resistance of the first part of the residual material 21 (i.e., the tension between the first stripper rod 111 and the sprue sleeve 11a and the first part of the residual material 21), causing the stripper plate 12 to separate from the upper fixed plate 11. The first part of the residual material 21 detaches from the first stripper rod 111 and the sprue sleeve 11a, thereby allowing the first part of the residual material 21 to detach from the stripper plate 12 under its own weight, achieving automatic stripping.

[0112] Figure 9 This is a schematic diagram of the injection mold 10 in the part removal state. Figure 10 for Figure 9 Please refer to the sectional view diagram. Figure 8 and Figure 10 Then, the upper fixing plate 11 is pulled. The upper fixing plate 11, through the second guide rod 112, the stripper plate 12, the first guide rod 141 and the upper template 13, makes the pulling force applied to the upper template 13 greater than the damping force applied to the upper template 13 by the damping member 143. That is, the upper template 13 can be pulled to move away from the lower template 14, thereby separating the upper template 13 from the lower template 14, so that the injection mold 10 opens to the part removal state, so that the operator can use the robot arm to remove the part.

[0113] In some embodiments, the injection mold 10 further includes an ejector module (not shown in the figure), which can drive the ejector mold to eject the product. The ejector mold can adopt an existing structure, which will not be described in detail in this embodiment.

[0114] Please continue to refer to this. Figure 6 In some embodiments, a reinforcing block 121 is embedded on the side of the stripper plate 12 near the upper template 13, and a portion of the reinforcing block 121 protrudes from the stripper plate 12. A recessed portion 131 is provided on the side of the upper template 13 near the stripper plate 12, and the recessed portion 131 can cooperate with the protruding portion of the reinforcing block 121. A transition channel 10a2 is provided on the bottom surface of the recessed portion 131.

[0115] In this embodiment, by setting a reinforcing block 121, during the mold closing process of the injection mold 10, the reinforcing block 121 is inserted into the recessed part 131. The two are in concave-convex cooperation, which plays a guiding role in the mold closing of the stripper plate 12 and the upper template 13, thereby improving the accuracy and stability of the mold closing of the stripper plate 12 and the upper template 13.

[0116] Among them, the reinforcing block 121 can be made of hard materials such as tungsten steel to improve the wear resistance of the reinforcing block 121.

[0117] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An injection mold characterized in that, The injection mold (10) comprises an upper fixed plate (11), a stripper plate (12), an upper mold plate (13) and a lower mold plate (14); The stripper plate (12) and the upper mold plate (13) are connected through a first guide rod (141), and part of the structure of the first guide rod (141) extends into the lower mold plate (14), and the stripper plate (12) and the first guide rod (141) can move relative to the upper mold plate (13); The injection mold (10) has a closed mold state and an open mold state, and the open mold state further comprises a material breaking state and a stripping state; In the closed mold state, the stripper plate (12) is clamped between the upper mold plate (13) and the upper fixed plate (11); In the material breaking state, the upper fixed plate (11) and the stripper plate (12) move towards the side away from the upper mold plate (13), and the stripper plate (12) is separated from the residual material (20) connected in the upper mold plate (13); In the stripping state, the stripper plate (12) moves to a preset position, the first guide rod (141) can limit the stripper plate (12) to continue to move, the stripper plate (12) drives the residual material (20) to separate from the upper fixed plate (11), and the residual material (20) separates from the stripper plate (12) under its own gravity.

2. The injection mold of claim 1, wherein The upper fixed plate (11), the stripper plate (12) and the upper mold plate (13) are spliced to form a total flow channel (10a); The upper mold plate (13) and the lower mold plate (14) are spliced to form a cavity (10b), and the total flow channel (10a) and the cavity (10b) are connected; The injection mold (10) further comprises a first stripper rod (111) and a second stripper rod (142), one end of the first stripper rod (111) is connected with the upper fixed plate (11), the other end of the first stripper rod (111) extends through the stripper plate (12) to the total flow channel (10a), one end of the second stripper rod (142) is connected with the lower mold plate (14), and the other end of the second stripper rod (142) extends into the cavity (10b); In the material breaking state, the first stripper rod (111) and the second stripper rod (142) can pull the stripper plate (12) and the residual material (20) connected in the upper mold plate (13) to separate.

3. The injection mold of claim 2, wherein Along the opening direction (C) of the injection mold (10), the first stripper rod (111) and the second stripper rod (142) are oppositely arranged, and the cross-sectional area of the first stripper rod (111) is larger than that of the second stripper rod (142).

4. The injection mold of claim 2, wherein The total flow channel (10a) comprises a transition flow channel (10a2), and the transition flow channel (10a2) is arranged on the side of the upper mold plate (13) close to the stripper plate (12); The end of the first stripper rod (111) away from the upper fixed plate (11) is located in the transition flow channel (10a2) and connected with the residual material (20) in the transition flow channel (10a2). The first stripper rod (111) is connected with the residual material (20), and under the pulling force of the first stripper rod (111), the residual material (20) can support the stripper plate (12) to move synchronously with the fixed plate.

5. The injection mold of claim 2, wherein The cavity (10b) comprises a tail hole (10b3); The second stripper rod (142) is located in the tail hole (10b3) at one end close to the upper mold plate (13).

6. Injection mold according to any one of claims 1 to 5, characterized in that In the stripper state, one end of the first guide rod (141) away from the stripper plate (12) abuts against the upper mold plate (13) to limit the movement of the stripper plate (12) relative to the upper mold plate (13).

7. Injection mold according to any one of claims 1 to 5, characterized in that The upper fixed plate (11) and the stripper plate (12) are connected by a second guide rod (112), and the stripper plate (12) can move along the second guide rod (112); In the stripper state, one end of the second guide rod (112) away from the upper fixed plate (11) abuts against the stripper plate (12) to limit the stripper plate (12) from falling.

8. Injection mold according to any one of claims 1 to 5, characterized in that The injection mold (10) further comprises a damping member (143), one end of which is fixed to the lower mold plate (14), and the other end is inserted into the upper mold plate (13); The damping member (143) can lock the upper mold plate (13) and the lower mold plate (14), and the damping force exerted by the damping member (143) on the upper mold plate (13) is greater than the demolding resistance of the residual material (20) in the stripper plate (12), so that the stripper plate (12) drives the residual material (20) to separate from the upper fixed plate (11).

9. The injection mold of claim 8, wherein, When the pulling force applied to the upper mold plate (13) is greater than the damping force exerted by the damping member (143) on the upper mold plate (13), the upper mold plate (13) moves away from the lower mold plate (14), so that the injection mold (10) is in the state of taking out the product.

10. Injection mold according to any one of claims 1 to 5, characterized in that The side of the stripper plate (12) away from the upper fixed plate (11) is inlaid with a reinforcing block (121), and part of the structure of the reinforcing block (121) protrudes from the stripper plate (12); The upper mold plate (13) is provided with a recess (131), and the recess (131) can cooperate with the protruding part of the reinforcing block (121).

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