Rotary demolding mechanism and mold

Abstract

The embodiment of the utility model discloses a rotary demoulding mechanism and a mould, the rotary demoulding mechanism comprises a movable mould plate, a first top plate, a second top plate, a third top plate, a straight top block, an inclined connecting rod and a plurality of rotating blocks, the first top plate, the second top plate and the third top plate are sequentially arranged from bottom to top; the lower end of the straight ejection block is fixedly connected with the second ejection plate, the upper end of the straight ejection block penetrates through the first ejection plate and the movable mold plate, the two sides of the upper end of the straight ejection block are each rotationally connected with two rotating blocks, each rotating block is in a quarter cylinder shape, and each rotating block is connected with a third ejection plate through the corresponding inclined connecting rod. According to the rotary demolding mechanism provided by the utility model, the rotary block is triggered to rotate by driving the relative movement of the ejection plate and the straight ejection block, and the inclined connecting rod is used for driving the rotary block to turn over, so that the back-off phenomenon of the inner wall of a rotary body structure is smoothly overcome, and the efficient and smooth demolding process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field more specifically, relate to a kind of rotary demolding mechanism and mould. BACKGROUND

[0002] In Figure 1 In the plastic part design shown, the overall shape is a semi-cylindrical shell, and an axial two-end central position is provided with an axle connecting groove, and the design is arranged with a screw column along the radial direction in the middle part. The key feature of this structural design is that the cross section of the axle connecting groove is T-shaped, and the geometry of this area is a revolved body structure. The inner wall of the revolved body structure is designed with an undercut structure, which can affect the smooth demolding of the mold. 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 a rotary demolding mechanism. By driving the relative movement of the top plate and the straight top block, the rotation of the rotating block is triggered, and the rotating block is turned over by the inclined connecting rod, thereby smoothly overcoming the undercut phenomenon of the inner wall of the revolved body structure and ensuring efficient and smooth demolding process.

[0004] The utility model embodiment further proposes a mold with the above rotary demolding mechanism.

[0005] The technical scheme adopted by the utility model is to provide a rotary demolding mechanism, which includes a movable mold plate, a first top plate, a second top plate, a third top plate, a straight top block, an inclined connecting rod, and a plurality of rotating blocks. The first top plate, the second top plate, and the third top plate are arranged in order from bottom to top. The lower end of the straight top block is fixedly connected to the second top plate, and the upper end penetrates through the first top plate and the movable mold plate. Two rotating blocks are rotatably connected to the upper end of the straight top block on both sides. The rotating blocks are in the shape of a quarter cylinder. Each rotating block is connected to a third top plate by the inclined connecting rod.

[0006] With the above structure, the rotary demolding mechanism can effectively overcome the undercut phenomenon of the inner wall of the revolved body structure and ensure the smooth demolding process of the mold. Specifically, the movement of the movable mold plate enables the relative movement between the first top plate, the second top plate, and the third top plate, thereby driving the straight top block to move up and down relative to the inclined connecting rod, and triggering the rotating action of the rotating block. The quarter-cylindrical design of the rotating block can smoothly contact the inner wall of the mold. Through the action of the inclined connecting rod, the rotating block is turned over for demolding, so that the rotating block can be smoothly separated from the undercut part of the inner wall of the axle connecting groove.

[0007] According to one embodiment of the utility model, the straight top block is provided with a through groove, and the upper end of the inclined connecting rod extends into the through groove and moves up and down relative to the straight top block. This arrangement enables the inclined connecting rod to move up and down relative to the straight top block.

[0008] According to one embodiment of the utility model, the straight top block is provided with an arc-shaped hole, and the arc-shaped hole penetrates through both sides of the upper end of the straight top block, the upper end of the inclined connecting rod is connected with a limiting pin, and the limiting pin is slidably matched with the arc-shaped hole; the inclined connecting rod moves up and down relative to the straight top block, so that the limiting groove slides along the arc-shaped groove and drives the rotating block to overturn.

[0009] According to one embodiment of the utility model, both ends of the limiting pin are fixedly connected with the rotating blocks on both sides of the straight top block.

[0010] According to one embodiment of the utility model, the lower end of the inclined connecting rod is swingably connected with the third top plate; it is ensured that the rotating block can freely adjust its position according to the rotation angle of the inclined connecting rod during demolding.

[0011] According to one embodiment of the utility model, the rotary demolding mechanism further comprises a driver cylinder, the straight top block is vertically provided with a connecting hole, the lower end of the driver cylinder is fixedly connected with the first top plate, and the upper end is slidably matched with the connecting hole; the driver cylinder is used for ejecting the screw post position on the plastic part.

[0012] According to one embodiment of the utility model, the straight top block is provided with a mounting hole, the mounting hole is fixedly installed with a connecting shaft, and the rotating block is rotatably connected with the connecting shaft; so that the rotating block can freely rotate around the connecting shaft, thereby realizing accurate demolding movement. Through the support of the connecting shaft, the rotating block can be driven by the straight top block to rotate within the set range.

[0013] According to one embodiment of the utility model, the movable die plate is fixedly installed with a fixed plate.

[0014] According to one embodiment of the utility model, a distance-adjusting pull rod is arranged between the first top plate, the second top plate and the third top plate.

[0015] A mold comprises a fixed die assembly and the rotary demolding mechanism of any one of the above. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is the top view of the plastic part in the embodiment of the utility model.

[0018] Figure 2It is the perspective view of the fixed die assembly in the embodiment of the utility model.

[0019] Figure 3 It is the perspective view of the movable die assembly in the embodiment of the utility model.

[0020] Figure 4 It is the plan view of the movable die assembly in the embodiment of the utility model.

[0021] Figure 5 It is the sectional view along A-A line in the embodiment of the utility model. Figure 4

[0022] Figure 6 It is the perspective view of the rotary demoulding mechanism in the embodiment of the utility model.

[0023] Figure 7 It is the perspective view when the rotary demoulding mechanism is clamped in the embodiment of the utility model.

[0024] Figure 8 It is the perspective view when the rotary demoulding mechanism is opened in the embodiment of the utility model.

[0025] Figure 9 It is the structural schematic view of the straight top block in the embodiment of the utility model.

[0026] Figure 10 It is the exploded view of the rotary demoulding mechanism in the embodiment of the utility model.

[0027] Figure 11 It is the perspective view of the rotary block in the embodiment of the utility model.

[0028] Figure 12 It is the perspective view of the connecting shaft in the embodiment of the utility model.

[0029] Explanation of reference numerals in the drawing:

[0030] 10, plastic part; 20, fixed die assembly; 30, movable die assembly;

[0031] 11, shell; 12, screw column; 13, shaft connecting groove;

[0032] 21, fixed die plate; 22, fixed die core rod;

[0033] 31, movable die plate; 32, fixed distance pull rod; 33, first top plate; 34, second top plate; 35, third top plate; 36, straight top block; 37, fixed plate; 38, connecting shaft; 39, inclined connecting rod; 310, rotary block; 311, limit pin; 312, handle cylinder;

[0034] 36a, arc-shaped hole; 36b, mounting hole; 36c, connecting hole; 36d, through groove. DETAILED DESCRIPTION ​

[0035] 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

[0036] like Figures 2-12 As shown, this embodiment discloses a rotary demolding mechanism, including a moving template 31, a first top plate 33, a second top plate 34, a third top plate 35, a straight ejector block 36, a diagonal connecting rod 39, and multiple rotating blocks 310. The first top plate 33, the second top plate 34, and the third top plate 35 are arranged sequentially from bottom to top. The lower end of the straight ejector block 36 is fixedly connected to the second top plate 34, and the upper end passes through the first top plate 33 and the moving template 31. Two rotating blocks 310 are rotatably connected to both sides of the upper end of the straight ejector block 36. The rotating blocks 310 are quarter-cylindrical in shape, and each rotating block 310 is connected to the third top plate 35 through the diagonal connecting rod 39.

[0037] Combination Figure 1 As shown, in this embodiment, the plastic part 10 has a semi-cylindrical shell 11, with a screw post 12 located at the axial center of the shell 11, and the screw post 12 is arranged radially. The two shells 11 together form a complete cylindrical structure, which can be connected together by bolts connected by the screw post 12. Shaft connecting grooves 13 are provided at the center of both axial ends of the shell 11. The cross-section of the shaft connecting groove 13 is T-shaped, and the geometry of this area is a rotating structure, that is, the outer wall of the shaft connecting groove 13 is a semi-stepped cylinder, which consists of a larger diameter cylinder and a smaller diameter cylinder.

[0038] Furthermore, combined Figure 2 As shown, in this embodiment, the fixed mold assembly 20 includes a fixed mold plate 21 and a fixed mold core rod 22, which is used to form the internal features of the screw post 12.

[0039] Furthermore, combining Figures 3-12 As shown, in this embodiment, the rotary demolding mechanism is used on the moving mold assembly 30. The first top plate 33, the second top plate 34, and the third top plate 35 are all disposed at the lower part of the moving mold plate 31, and the first top plate 33 is used to connect the ejection power source of the injection molding machine. The fixed-distance tie rod 32 connects the first top plate 33, the second top plate 34, and the third top plate 35 into one unit, wherein the fixed-distance tie rod 32 is disposed at both ends of the three.

[0040] Further, in this embodiment, the fixed mold assembly 20 and the moving mold assembly 30 are closed to injection mold the plastic part 10. During mold opening, the first ejector plate 33, the second ejector plate 34, and the third ejector plate 35 are ejected together. The second ejector plate 34 pushes the straight ejector block 36 upward, and the third ejector plate 35 pushes the inclined connecting rod 39 upward synchronously, thereby causing the plastic part 10 to disengage from the moving mold plate 31 and release its ejection position. Subsequently, the first ejector plate 33 and the second ejector plate 34 move upward synchronously, while the position of the third ejector plate 35 remains unchanged. The straight ejector block 36 also moves upward relative to the rotating block 310 and the inclined connecting rod 39. The inclined connecting rod 39 drives the rotating block 310 to rotate 90 degrees, combined with… Figure 7 As shown, during mold closing, the two rotating blocks 310 on the same side of the ejector block 36 form an upper semi-cylindrical shape. Figure 8 As shown, during mold opening, the two rotating blocks 310 rotate 90 degrees to form a lower semi-cylindrical shape, completing the demolding process. Finally, the first ejector plate 33 continues to move upward, pushing the ejector sleeve 312 upward. The ejector sleeve 312 moves upward within the ejector block 36 and relative to the ejector block 36, ultimately completing the ejection of the plastic part 10.

[0041] Specifically, in combination Figures 9-12 As shown, the straight ejector block 36 has a through groove 36d, and the upper end of the inclined connecting rod 39 extends into the through groove 36d and moves up and down relative to the straight ejector block 36. The straight ejector block 36 has an arc-shaped hole 36a, which penetrates both sides of the upper end of the straight ejector block 36. The upper end of the inclined connecting rod 39 is connected to a limiting pin 311, and the limiting pin 311 is slidably engaged with the arc-shaped hole 36a. The two ends of the limiting pin 311 are fixedly connected to the rotating blocks 310 on both sides of the straight ejector block 36. The lower end of the inclined connecting rod 39 is swayably connected to the third top plate 35. The rotary demolding mechanism also includes a sleeve 312. The straight ejector block 36 has a vertical connecting hole 36c. The lower end of the sleeve 312 is fixedly connected to the first top plate 33, and the upper end is slidably engaged with the connecting hole 36c. Through the synergistic effect of the above structures, the rotary demolding mechanism can effectively complete the demolding operation of the mold, ensuring the smooth release of the plastic part 10, while reducing damage and wear.

[0042] Specifically, in combination Figure 8 As shown, the straight-push block 36 is provided with a mounting hole 36b, and a connecting shaft 38 is fixedly installed in the mounting hole 36b. The rotating block 310 is rotatably connected to the connecting shaft 38. A fixing plate 37 is fixedly installed on the moving template 31. The fixing plate 37 is fixedly connected to the moving template 31, and the straight-push block 36 and the inclined connecting rod 39 both pass through the fixing plate 37.

[0043] Combination Figure 12 As shown, in this embodiment, the middle part of the connecting shaft 38 is square, and there are two ends. The middle part of the rotating shaft is vertically through a through hole, through which the sleeve 312 can move up and down.

[0044] In other embodiments, a mold is disclosed, comprising a drag assembly 20 and the rotary demolding mechanism described in the embodiments.

[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "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 present application 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 of the present application.

[0046] In addition, the terms "first" and "second" are only for descriptive purposes, 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" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0047] In the present application, unless otherwise explicitly specified and limited, the "on" or "under" of the first feature to the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the "over", "above" and "on" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as a limitation of the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above-mentioned embodiments within the scope of the present application.

Claims

1. A rotary demolding mechanism characterized by: The application relates to a rotary demoulding mechanism, which comprises a movable mould plate, a first top plate, a second top plate, a third top plate, a straight top block, an inclined connecting rod and a plurality of rotating blocks, wherein the first top plate, the second top plate and the third top plate are sequentially arranged from bottom to top, the lower end of the straight top block is fixedly connected with the second top plate, the upper end of the straight top block penetrates through the first top plate and the movable mould plate, two rotating blocks are rotatably connected to the two sides of the upper end of the straight top block, the rotating blocks are in the shape of a quarter of a cylinder, and each rotating block is connected with a third top plate through the inclined connecting rod.

2. A rotary demolding mechanism according to claim 1, characterized in that: The straight top block is provided with a through groove, the upper end of the inclined connecting rod extends into the through groove and moves up and down relative to the straight top block.

3. A rotary demolding mechanism according to claim 2, characterized in that: The straight top block is provided with an arc-shaped hole, the arc-shaped hole penetrates through the two sides of the upper end of the straight top block, the upper end of the inclined connecting rod is connected with a limiting pin, and the limiting pin is slidably matched with the arc-shaped hole.

4. A rotary demolding mechanism according to claim 3, characterized in that: The two ends of the limiting pin are fixedly connected with the rotating blocks on the two sides of the straight top block.

5. A rotary demolding mechanism according to claim 3, characterized in that: The lower end of the inclined connecting rod is swingably connected with the third top plate.

6. A rotary demolding mechanism according to claim 1, characterized in that: The straight top block is vertically provided with a connecting hole, the lower end of a driving cylinder is fixedly connected with the first top plate, and the upper end of the driving cylinder is slidably matched with the connecting hole.

7. A rotary demolding mechanism according to claim 1, characterized in that: The straight top block is provided with a mounting hole, a connecting shaft is fixedly mounted in the mounting hole, and the rotating blocks are rotatably connected with the connecting shaft.

8. A rotary demolding mechanism according to claim 1, characterized in that: The movable mould plate is fixedly mounted with a fixed plate.

9. A rotary demolding mechanism according to claim 8, characterized in that: Distance pull rods are arranged between the first top plate, the second top plate and the third top plate.

10. A mold characterized by: The application further relates to a die assembly and the rotary demoulding mechanism. The application relates to a rotary demoulding mechanism, which comprises a movable mould plate, a first top plate, a second top plate, a third top plate, a straight top block, an inclined connecting rod and a plurality of rotating blocks, wherein the first top plate, the second top plate and the third top plate are sequentially arranged from bottom to top, the lower end of the straight top block is fixedly connected with the second top plate, the upper end of the straight top block penetrates through the first top plate and the movable mould plate, two rotating blocks are rotatably connected to the two sides of the upper end of the straight top block, the rotating blocks are in the shape of a quarter of a cylinder, and each rotating block is connected with a third top plate through the inclined connecting rod.

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