In-mold bending mechanism and injection mold

Abstract

The embodiment of the utility model discloses an in-mold bending mechanism and an injection mold, and the in-mold bending mechanism comprises an elastic plate, a bending mechanism and a bending mechanism, the seat plate is arranged at the bottom of the elastic plate and is provided with a supporting part extending into the elastic plate; the sliding block is movably arranged on the elastic plate; wherein the combination of the sliding block and the supporting part is used for providing internal and external support for the bending part on the insert in the mold closing process; in the mold opening process, the elastic plate moves in the direction away from the seat plate, so that the supporting part releases the bending space of the bending part; and then, the sliding block pushes the bending part towards the inner side, so that the bending part is promoted to be bent. The utility model provides an in-mold bending mechanism which can automatically complete the bending operation of a metal insert, ensure the precision and consistency of a bending part in the forming process and improve the efficiency and the product quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field more specifically, relate to a kind of in-mold bending mechanism and injection mold. BACKGROUND

[0002] Metal insert injection molding technology is a kind of by being fixed in advance in mould, then injection plastic forming obtains integrated injection molding part by metal insert. As shown in combination Fig. 1-2 Injection molding product includes insert and injection molding part, and the insert has multiple bending parts, which pass through the injection molding part. In the traditional process, workers need to manually bend these bending parts through subsequent operations, and the bent bending parts are located in the groove at the bottom of the injection molding part. However, this process relies on manual operation, not only increases labor costs, but also may cause operation errors due to manual operation, thereby affecting the consistency and quality of the product. In view of this, the existing process needs to be improved. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the related art to some extent. To this end, the utility model embodiment proposes an in-mold bending mechanism, which can automatically complete the bending operation of the metal insert, ensure the precision and consistency of the bending part during the molding process, and improve the efficiency and product quality.

[0004] The utility model embodiment further proposes an injection mold with the above-mentioned in-mold bending mechanism.

[0005] The technical scheme adopted by the utility model is to provide an in-mold bending mechanism, comprising:

[0006] a spring plate;

[0007] a seat plate provided at the bottom of the spring plate and having a support portion extending into the spring plate;

[0008] a sliding block movably provided on the spring plate;

[0009] The combination of the sliding block and the support portion provides internal and external support for the bending part on the insert during the clamping process. During the opening process, the spring plate moves away from the seat plate, so that the support portion releases the bending space of the bending part. Then, the sliding block pushes the bending part inward, causing it to bend.

[0010] With the above structure, the in-mold bending mechanism can automatically complete the bending operation of the bending part of the metal insert during the injection molding process, thereby effectively reducing the dependence on manual operation. By controlling the relative position of the slider and the support part, it is ensured that the bending part is fully supported inside and outside when the mold is closed, preventing deformation of the bending part during injection molding. When the mold is opened, the movement of the elastic plate and the release of the support part allow the bending part to have sufficient bending space, and the slider plays the role of automatic bending during this process, that is, the slider moves towards the support part, causing the bending part to bend. This process can reduce errors caused by manual operation, improve bending accuracy and consistency. Not only does it optimize the production process, but it also significantly reduces labor costs, improves production efficiency and overall product quality.

[0011] According to an embodiment of the present application, a spring is arranged between the elastic plate and the seat plate, and the spring has an elastic tendency to move the elastic plate away from the seat plate. This elastic tendency allows the elastic plate to automatically move outward during mold opening, thereby releasing the bending space of the bending part and ensuring that the slider can accurately push the bending part to complete the bending operation.

[0012] According to an embodiment of the present application, an oil cylinder is fixedly installed on the elastic plate to drive the slider to move. The oil cylinder controls the displacement of the slider to accurately adjust its movement trajectory on the elastic plate, ensuring that the slider can accurately perform the bending operation during mold closing and opening.

[0013] According to an embodiment of the present application, the support part has a forming protrusion for forming a groove on the injection molded part.

[0014] According to an embodiment of the present application, the side of the support part facing the slider is provided with an avoidance groove, and the avoidance groove is adapted to the bending part. This ensures that the combination of the support part and the slider can fix the bending part on both the inner and outer sides.

[0015] According to an embodiment of the present application, a top plate provided with a ejector pin is further included. The top plate moves upward and lifts the formed injection molded product through the ejector pin.

[0016] An injection mold includes the in-mold bending mechanism described above. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Fig. 1 This is a perspective view of the injection-molded product in the embodiments of this utility model.

[0019] Fig. 2 This is an exploded view of the injection-molded product in an embodiment of this utility model.

[0020] Fig. 3 This is a half-sectional perspective view of the moving mold assembly when it is closed in an embodiment of this utility model.

[0021] Fig. 4 This is a half-section perspective view of the moving mold assembly during mold opening in an embodiment of this utility model.

[0022] Fig. 5 This is a half-sectional structural diagram of the moving mold assembly in an embodiment of this utility model.

[0023] Fig. 6 This is a half-sectional top view of the moving mold assembly in an embodiment of this utility model.

[0024] Fig. 7 for Fig. 6 A cross-sectional view of the moving mold assembly in the middle AA line when the mold is closed.

[0025] Fig. 8 for Fig. 6 A cross-sectional view of the moving mold assembly in the middle AA line during mold opening.

[0026] Fig. 9 This is a perspective view of the base plate, slider, and injection molded product in an embodiment of this utility model.

[0027] Fig. 10 This is a perspective view of the base plate and slider in the mold closing process in an embodiment of this utility model.

[0028] Fig. 11 This is a perspective view of the base plate and slider in the mold opening embodiment of this utility model.

[0029] Fig. 12 This is a perspective view of the base plate in an embodiment of this utility model.

[0030] Explanation of the labels in the diagram:

[0031] 10. Injection molded products; 20. Moving mold components;

[0032] 11. Inserts; 12. Injection molded parts;

[0033] 11a. Bending section; 12a. Groove;

[0034] 21. Spring plate; 22. Seat plate; 23. Top plate; 24. Ejector pin; 25. Spring; 26. Slider; 27. Hydraulic cylinder;

[0035] 221. Support part; 222. Clearance groove; 223. Molded protrusion. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Example 1

[0037] like Fig. 3-12 As shown, this embodiment discloses an in-mold bending mechanism, comprising:

[0038] Spring plate 21;

[0039] Seat plate 22, the seat plate 22 is disposed at the bottom of spring plate 21 and has a support portion 221 extending into spring plate 21;

[0040] Slider 26, which is movably mounted on spring plate 21;

[0041] The combination of the slider 26 and the support 221 provides internal and external support for the bent portion 11a on the insert 11 during the mold closing process; during the mold opening process, the spring plate 21 moves away from the base plate 22, so that the support 221 releases the bending space of the bent portion 11a; subsequently, the slider 26 pushes the bent portion 11a inward, causing it to bend.

[0042] Combination Fig. 1-2 As shown, in this embodiment, the injection-molded product 10 includes a metal insert 11 and a plastic injection-molded part 12. The insert 11 has multiple bends 11a along its edge, and the bends 11a are perpendicular to the main body of the insert 11. The bottom surface of the injection-molded part 12 has multiple grooves 12a corresponding to the bends 11a. After the bends 11a are bent, the bent portion is located within the grooves 12a, preventing it from protruding from the bottom surface of the injection-molded part 12.

[0043] Combination Fig. 3-8 As shown in the figure, it is a half-sectional perspective view of the moving mold assembly 20. The moving mold assembly 20 and the fixed mold assembly are combined to form an injection mold. The mold bending mechanism is set in the moving mold assembly 20.

[0044] Further, in the embodiment, the elastic plate 21 is movably arranged on the upper surface of the seat plate 22, the lower part of the seat plate 22 is provided with a top plate 23, the lower part of a plurality of ejector pins 24 is fixedly connected to the top plate 23, the upper end of the ejector pin 24 penetrates through the seat plate 22 and the elastic plate 21 and extends into the cavity surface of the elastic plate 21. The upper surface of the seat plate 22 is provided with a support part 221, the elastic plate 21 is provided with a through hole corresponding to the position of the support part 221, the upper end of the support part 221 penetrates through the through hole and extends into the cavity surface of the elastic plate 21.

[0045] Further, in combination with Fig. 12 As shown in the figure, the support part 221 is provided with a forming protrusion 223 for forming the groove 12a of the injection molded part 12, the support part 221 is provided with an avoiding groove 222 on the side facing the slider 26, and the avoiding groove 222 is matched with the bending part 11a.

[0046] Further, in the embodiment, the avoiding groove 222 is arranged on the upper end of the support part 221 facing the slider 26. During clamping, the bending part 11a is embedded in the avoiding groove 222, the inner end of the slider 26 abuts against the bending part 11a in the avoiding groove 222, preventing the bending part 11a from being deformed.

[0047] Specifically, the elastic plate 21 and the seat plate 22 are provided with a spring 25, the spring 25 has an elastic tendency to move the elastic plate 21 away from the seat plate 22, and the elastic plate 21 is fixedly installed with an oil cylinder 27 for driving the slider 26 to move.

[0048] Further, in the embodiment, the use method of the mold inner bending mechanism is as follows:

[0049] Before clamping, first, the insert 11 is pre-placed in the mold, then the movable mold assembly 20 is clamped with the fixed mold assembly, and the injection molded part 12 starts to inject the melt. After the melt is cooled and formed, the insert 11 is embedded in the injection molded part 12 to form an integrated injection molded product 10. Subsequently, the mold is opened, the movable mold assembly 20 moves away from the fixed mold assembly, and the restriction of the fixed mold assembly on the elastic plate 21 is released. At this time, under the action of the spring 25, the elastic plate 21 automatically pops up and moves away from the seat plate 22. In combination with Fig. 8 As shown in the figure, the support part 221 exits the through hole on the elastic plate 21, releasing the bending space of the bending part 11a. Then, the oil cylinder 27 is started, driving the slider 26 to move inward, the inner end of the slider 26 abuts against the bending part 11a, making it bend to the position of the groove 12a of the injection molded part 12. After the bending part 11a is bent, the oil cylinder 27 drives the slider 26 to retreat, and finally the completed injection molded part is taken out.

[0050] In other embodiments, an injection mold is disclosed, including the in-mold bending mechanism described in the embodiments, specifically the injection mold includes a movable mold assembly 20 and a fixed mold assembly, the movable mold assembly 20 includes the in-mold bending mechanism in the embodiments.

[0051] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0052] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0053] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as a limitation on the utility model, and ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. An in-mold bending mechanism, characterized by, The utility model relates to a kind of in-mold bending mechanisms, comprising: a spring plate; a base plate disposed at the bottom of the spring plate and having a support portion extending into the spring plate; a slider movably disposed on the spring plate; wherein the combination of the slider and the support portion provides internal and external support to the bent portion on the insert during the clamping process; during the unclamping process, the spring plate moves away from the base plate, so that the support portion releases the bending space of the bent portion; subsequently, the slider pushes the bent portion inward, causing it to bend.

2. An in-mold bending mechanism according to claim 1, wherein: A spring is provided between the spring plate and the base plate, and the spring has an elastic tendency to move the spring plate away from the base plate.

3. An in-mold bending mechanism according to claim 1, wherein: An oil cylinder is fixedly installed on the spring plate for driving the slider to move.

4. An in-mold bending mechanism according to claim 1, wherein: The support portion has a forming protrusion for forming a groove on the injection molded part.

5. An in-mold bending mechanism according to claim 4, wherein: The side of the support portion facing the slider is provided with an avoidance groove, and the avoidance groove is adapted to the bent portion.

6. An in-mold bending mechanism according to claim 1, wherein: A top plate provided with a ejector pin is further included.

7. An injection mold characterized by: The utility model relates to a kind of in-mold bending mechanisms, comprising: a spring plate; a base plate disposed at the bottom of the spring plate and having a support portion extending into the spring plate; a slider movably disposed on the spring plate; wherein the combination of the slider and the support portion provides internal and external support to the bent portion on the insert during the clamping process; during the unclamping process, the spring plate moves away from the base plate, so that the support portion releases the bending space of the bent portion; subsequently, the slider pushes the bent portion inward, causing it to bend. A spring is provided between the spring plate and the base plate, and the spring has an elastic tendency to move the spring plate away from the base plate. An oil cylinder is fixedly installed on the spring plate for driving the slider to move. The support portion has a forming protrusion for forming a groove on the injection molded part. The side of the support portion facing the slider is provided with an avoidance groove, and the avoidance groove is adapted to the bent portion. A top plate provided with a ejector pin is further included. The utility model relates to a kind of in-mold bending mechanisms, comprising: a spring plate; a base plate disposed at the bottom of the spring plate and having a support portion extending into the spring plate; a slider movably disposed on the spring plate; wherein the combination of the slider and the support portion provides internal and external support to the bent portion on the insert during the clamping process; during the unclamping process, the spring plate moves away from the base plate, so that the support portion releases the bending space of the bent portion; subsequently, the slider pushes the bent portion inward, causing it to bend. A spring is provided between the spring plate and the base plate, and the spring has an elastic tendency to move the

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