Demolding structure of L-shaped mold core on plastic mold
By designing an L-shaped core demolding structure on the plastic mold and utilizing the cooperation of push rods and ejector pins, the problem of groove damage caused by uneven force during core demolding is solved, ensuring the forming accuracy of the L-shaped groove and smooth demolding.
Patent Information
- Application Number
- CN202423247299.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
When molding L-shaped slots on plastic parts, uneven stress on the core during demolding can damage the slot contour and affect molding accuracy.
A demolding structure for an L-shaped core on a plastic mold was designed. Through the cooperation of push rods and ejector rods, the longitudinal and transverse parts of the core are separated one after the other, ensuring the forming accuracy of the L-shaped slot and achieving smooth demolding.
It effectively avoids or reduces the damage to the L-shaped groove outline caused by the core, ensures the molding accuracy of the groove, and enables smooth demolding of the core and the plastic part.
Smart Images
Figure CN223803017U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plastic mold core, especially to the stripping structure of L-shaped core on plastic mold. BACKGROUND
[0002] When forming L-shaped clamping groove on plastic part, the phenomenon that the core deforms the clamping groove when stripping often occurs, the main reason is that the force of the two ends of the core embedded in the plastic part is inconsistent during the stripping process, which causes the core to be skewed during the stripping process and thus destroys the contour of the clamping groove. Based on this, the stripping structure of L-shaped core on plastic mold is improved to solve the problem of low dimensional accuracy of L-shaped clamping groove on plastic part. SUMMARY
[0003] In view of the problems existing in the prior art, the utility model provides a stripping structure of L-shaped core on plastic mold, the vertical part and the horizontal part of the L-shaped core are stripped from the plastic part in sequence, which can avoid or reduce the damage to the contour of the L-shaped clamping groove on the plastic part during stripping, ensure the forming accuracy of the L-shaped clamping groove, and ensure the smooth stripping of the plastic part and the core.
[0004] To solve the above technical problems, the utility model adopts a technical scheme as follows:
[0005] The stripping structure of L-shaped core on plastic mold, the movable mold and the fixed mold are arranged on the plastic mold, the movable mold core is arranged on the movable mold, and the fixed mold core is arranged on the fixed mold; the core is arranged on the end of the movable mold core facing the fixed mold core; the stripping structure comprises a push rod and a top rod, the push rod is detachably fixed on the fixed mold core and extends in the closing direction, one end of the push rod extends to the side of one end of the core through the fixed mold core, and the top rod is slidably connected with the movable mold core and arranged beside the other end of the core; when closing, the end of the push rod can match and abut against one end or one side of the core to form an L-shaped structure, and when stripping, the ejector pin on the movable mold can push the top rod to abut against the other end of the core to push the core away from the movable mold core.
[0006] As a further elaboration of the above technical scheme:
[0007] In the above technical scheme, the core is in a flat plate structure and is embedded on the movable mold core in the closing direction, comprising a forming part and a positioning part, the positioning part is embedded on the movable mold core and its lower end extends to the movement path of the ejector pin, and one end of the forming part is matched with the end of the push rod.
[0008] In the above technical scheme, one end of the forming part is further provided with a guide part extending towards the push rod, the guide part extends in the same direction as the push rod and is arranged on the extension line of the push rod, and the end of the guide part is matched and buckled or matched and press-bonded with the end of the push rod.
[0009] In the above technical scheme, the movable die core is provided with a positioning groove matched with the positioning part.
[0010] In the above technical scheme, the fixed die core is provided with a mounting hole groove matched with the push rod.
[0011] In the above technical scheme, the ejector rod is arranged on the ejector pin and extends in the same direction as the ejector pin.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the push rod matched with the core is arranged on the fixed die core, the L-shaped core structure is formed by cooperation of the push rod and the core, the L-shaped clamping groove is formed on the plastic part, the longitudinal part of the core is separated from the plastic part before the transverse part of the core, the profile of the L-shaped clamping groove is not damaged in the separation process, the forming precision of the L-shaped clamping groove is ensured, the ejector rod is arranged on the movable die core, the core is separated from the plastic part by the ejector rod or is separated from the plastic part synchronously with the plastic part, and the separation is smoothly realized. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is the structure schematic view of the plastic product in the embodiment;
[0014] Figure 2 is the cooperation structure schematic view of the separation structure and the core in the embodiment;
[0015] Figure 3 is the cooperation structure schematic view of the embodiment and the movable die core and the fixed die core;
[0016] Figure 4 is the structure schematic view of the core in the embodiment.
[0017] In the drawing: 10, movable die core; 11, positioning groove; 20, fixed die core; 21, mounting hole groove; 30, core; 31, forming part; 32, positioning part; 33, guide part; 40, push rod; 50, ejector rod; 60, ejector pin; 1, plastic product; 2, L-shaped clamping groove. DETAILED DESCRIPTION
[0018] The utility model will be further explained in detail in combination with the drawings.
[0019] The embodiments described with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.
[0020] For the sake of understanding, Figure 1 Part of the structure of the plastic product 1 in the present embodiment is shown, and it can be seen that an L-shaped clamping groove 2 is formed thereon.
[0021] As Figures 2-3As shown, the demolding structure of the L-shaped core on the plastic mold includes a moving mold and a fixed mold. The moving mold has a moving core 10, and the fixed mold has a fixed core 20. The end of the moving core 10 facing the fixed core 20 is equipped with a core 30. The demolding structure includes a push rod 40 and an ejector rod 50. The push rod 40 is detachably fixed on the fixed core 20 and extends along the mold closing direction. One end of the push rod passes through the fixed core 20 and extends to the side of one end of the core 30. The ejector rod 50 is slidably connected to the moving core 10 and is located on the side of the other end of the core 30. When the mold is closed, the end of the push rod 40 can match and abut against one end or one side of the core 30 to form an L-shaped structure. When demolding, the ejector pin 60 on the moving mold can push the ejector rod 50 against the other end of the core 30 to push the core 30 away from the moving core 10.
[0022] like Figure 2 As shown, the push rod 50 is mounted on a push pin 60 and extends in the same direction as it. In this embodiment, the push rod 50 is detachably fixed to the end of the push pin 60.
[0023] like Figure 3 As shown, the moving mold core 10 is provided with a positioning groove 11 that is adapted to the positioning part 32, and the fixed mold core 20 is provided with a mounting hole groove 21 that is adapted to the push rod 40.
[0024] like Figure 4 As shown, the core 30 has a flat plate structure and is embedded in the moving mold core 10 along the mold closing direction. It includes a forming part 31 and a positioning part 32. The positioning part 32 is embedded in the moving mold core 10 and its lower end extends to the moving path of an ejector pin 60. One end of the forming part 31 is adapted to the end of the ejector pin 40. One end of the forming part 31 is also provided with a guide part 33 extending toward the ejector pin 40. The guide part 33 extends in the same direction as the ejector pin 40 and is provided on its extension line. The end of the guide part 33 matches and engages or presses with the end of the ejector pin 40.
[0025] During mold closing, the moving mold drives the moving mold core 10 to move towards the fixed mold core 20. The guide part 33 matches and connects with the ejector rod 40. The molding part 31, the guide part 33, and the ejector rod 40 together form the core for molding the L-shaped structure of the L-shaped slot 2. After injection molding is completed, the moving mold leaves the fixed mold, and the moving mold drives the core 30 and the plastic product 1 to leave the fixed mold. The ejector rod 40 withdraws from the plastic product 1, and the ejector pin 60 pushes the ejector plate 50 to push the core 30 away from the plastic product 1. The ejector pin 60 pushes the plastic product 1 away from the moving mold core 10, completing the demolding.
[0026] The utility model discloses a push rod 40 that can match with the core 30 is arranged on the fixed die 20, and the L-shaped core structure can be formed with cooperation to form the L-shaped clamping slot 2 on the plastic part, and the longitudinal part of the core can be separated from the plastic part before the transverse part during demolding, so that the profile of the L-shaped clamping slot on the plastic part is not damaged or damaged to a lesser extent during the demolding process, and the molding precision of the L-shaped clamping slot is ensured.
[0027] The above is not any limitation on the technical range of the utility model, and any modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model still belong to the range of the technical scheme of the utility model.
Claims
1. A demolding structure of an L-shaped core on a mold, the mold being provided with a movable mold and a fixed mold, the movable mold being provided with a movable mold core, and the fixed mold being provided with a fixed mold core; characterized in that, The end of the movable die cavity towards the fixed die cavity is provided with a core; the demolding structure comprises a push rod and a ejector rod, the push rod is detachably fixed on the fixed die cavity and extends in the closing direction, one end of the push rod penetrates through the fixed die cavity and extends to the side of one end of the core, the ejector rod is slidably connected with the movable die cavity and is arranged beside the other end of the core; when the mold is closed, the end of the push rod can be matched against one end or one side of the core to form an L-shaped structure, when the mold is opened, the ejector pin on the movable die can push the ejector rod against the other end of the core to push the core away from the movable die cavity.
2. The stripper structure for L-shaped cores on a mold according to claim 1, characterized in that, The core is a flat plate structure and is embedded on the movable die cavity in the closing direction, comprising a forming part and a positioning part, the positioning part is embedded on the movable die cavity and its lower end extends to the moving path of an ejector pin, one end of the forming part is matched with the end of the push rod.
3. The stripper structure for molding on L-shaped core according to claim 2, wherein One end of the forming part is further provided with a guide part extending towards the push rod, the guide part extends in the same direction as the push rod and is arranged on the extension line of the push rod, the end of the guide part is matched with the end of the push rod.
4. The stripper structure for L-shaped cores on a mold according to claim 2, wherein The movable die cavity is provided with a positioning groove matched with the positioning part.
5. The stripper structure for L-shaped cores on a mold according to claim 1, wherein The fixed die cavity is provided with a mounting hole matched with the push rod.
6. The stripper structure for L-shaped cores on a mold according to claim 1, wherein The ejector rod is arranged on an ejector pin and extends in the same direction as the ejector pin.