A slanted ejector plate demolding structure for an injection mold

Abstract

The inclined ejector plate demolding structure for the injection mold can realize inclined demolding of the rear mold part of the injection product, and comprises a B plate, a cushion block, a rear mold bottom plate, a rear mold core, a first inclined cushion plate, a second inclined cushion plate, an inclined ejector pin, an inclined ejector pin plate, a sliding block and a ejector pin rod, the cushion block is fixed between the B plate and the rear mold bottom plate, the rear mold core is arranged in the B plate, one end of the first inclined cushion plate is arranged on the B plate, and the other end face is a first inclined surface, one end of the second inclined cushion plate is arranged on the rear mold bottom plate, and the other end face is a second inclined surface, the top surface and the bottom surface of the first inclined surface, the second inclined surface and the inclined ejector pin plate are all perpendicular to a second direction, a sliding groove perpendicular to the second direction is arranged on the inclined ejector pin plate, the inclined ejector pin is arranged to be inclined along the second direction, one end of the inclined ejector pin is fixed in the inclined ejector pin plate, the other end of the inclined ejector pin passes through the first inclined cushion plate, the B plate and the rear mold core in sequence, one end of the sliding block is arranged to be slidable in the sliding groove, and the ejector pin rod is obliquely connected to the other end face of the sliding block.

Description

Technical Field

[0001] This utility model belongs to the field of complex mold technology, and in particular relates to a slanted ejector plate demolding structure for injection molds. Background Technology

[0002] like Figure 1 As shown, a common injection mold generally includes a front mold 80 and a rear mold 90. The front mold 80 includes a front mold fixing plate 81, an A plate 82, and a front mold core 83. The front mold fixing plate 81 and the A plate 82 are fixedly connected. The front mold core 83 is embedded and fixed on the A plate 82 on the side away from the front mold fixing plate 81. The rear mold 90 includes a B plate 91, a rear mold core 92, ejector pins 93, ejector plate 94, a spacer block 95, a rear mold base plate 96, and ejector rollers 97. The rear mold core 92 is embedded on the B plate 91 on the side closer to the A plate 82. The two ends of the spacer block 95 are respectively ejected and fixed between the B plate 91 and the rear mold base plate 96 along the mold opening direction, forming a movement space 98. The rear mold base plate 96 is fixed to the movable side of the injection molding machine. The ejector plate 94 is set in the motion space 98, which can be moved away from or closer to the B plate 91. One end of the ejector pin 93 is fixed in the ejector plate 94, and the other end passes through the B plate 91 and the rear mold core 92 in sequence. One end of the ejector roller 97 is connected to the drive shaft of the injection molding machine, and the other end can slide through the rear mold base plate 96 and be ejected on the ejector plate 94. When the injection molded product is completed, the B plate 91 is driven by the rear mold base plate 96 to gradually move away from the A plate 82 until the mold is opened. The injection molded product left on the rear mold 90 is ejected by the ejector pin 93 along the mold opening direction under the action of the ejector roller 97, and the molded part is obtained.

[0003] However, when injection molded product 101 is as follows Figure 2 As shown, when the front mold portion 102 is parallel to the mold opening direction (i.e., the first direction X), and the rear mold portion 103 (especially the hole position) has an inclined angle with the mold opening direction, after the injection mold is opened, conventional ejector pins and ejector plates will have difficulty being ejected directly from the mold. Therefore, when the front mold portion of the injection molded product is parallel to the mold opening direction and the rear mold portion is inclined to the mold opening direction, how to achieve stable demolding becomes a problem that needs to be solved. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a slanted ejector plate demolding structure for injection molds, which solves the problem of how to achieve stable demolding when the front mold part of the injection molded product is parallel to the mold opening direction and the rear mold part is inclined to the mold opening direction.

[0005] This utility model provides a slanted ejector plate demolding structure for injection molds, used for slanted demolding of the rear mold portion of the injection molded product along a second direction after mold opening in a first direction. It includes: a B-plate, spacers, a rear mold base plate, a rear mold core, a first slanted spacer plate, a second slanted spacer plate, slanted ejector pins, a slanted ejector plate, and ejector components. Two spacers are provided, located at both ends on the same side of the B-plate. Each spacer's two ends are respectively fixed between the B-plate and the rear mold base plate along the first direction. The rear mold core is located inside the B-plate on the side away from the spacers. One end of the first slanted spacer plate is located on the B-plate near the rear mold base plate, and the other end face of the first slanted spacer plate is a first slanted surface. One end of the second slanted spacer plate is located on the rear mold base plate near the B-plate, and the other end face of the second slanted spacer plate is a second slanted surface. Both the first and second slanted surfaces are perpendicular to the first slanted ejector plate. In two directions, plate B, two pads, rear mold base plate, first inclined pad and second inclined pad together form an inclined sliding space. An inclined ejector plate is tilted and movable in the inclined sliding space. The top and bottom surfaces of the inclined ejector plate are perpendicular to the second direction. The inclined ejector plate is provided with a slide groove. The extension direction of the slide groove is perpendicular to the second direction. The inclined ejector is tilted in the second direction. One end of the inclined ejector is vertically fixed in the inclined ejector plate. The other end of the inclined ejector passes through the first inclined pad, plate B and rear mold core in sequence along the second direction to cooperate with the rear mold core to form the cavity of the rear mold part of the injection molded product. One end of the slider is slidably disposed in the slide groove. Both end faces of the slider are perpendicular to the second direction. One end of the ejector rod is obliquely connected to the other end face of the slider. The other end of the ejector rod passes through the rear mold base plate in the first direction.

[0006] Optionally, the projection of the top surface of the inclined ejector plate along the second direction lies within the contour of the first inclined surface.

[0007] Optionally, the angled ejector plate includes an angled ejector panel and an angled ejector base plate. One end of the angled ejector is inserted and fixed inside the angled ejector panel, and the end face of one end of the angled ejector is close to the angled ejector base plate. A groove is formed inside the angled ejector base plate.

[0008] Preferably, the angled ejector plate and the angled ejector base plate are detachably connected by bolts.

[0009] Optionally, the groove is a T-shaped through groove.

[0010] Optionally, the slider is detachably fixed to the top rod.

[0011] Optionally, one end of the first inclined pad is embedded in plate B, and the end face of one end of the first inclined pad is a plane perpendicular to the first direction.

[0012] Optionally, one end of the second inclined pad is embedded in the rear mold base plate, and the end face of one end of the second inclined pad is a plane perpendicular to the first direction.

[0013] Optionally, a trash nail is provided on the side of the second inclined pad closest to the first inclined pad.

[0014] Optionally, multiple angled ejector pins are provided and evenly distributed in the rear mold area of ​​the injection molded product.

[0015] Compared with the prior art, the inclined ejector plate demolding structure for injection molds provided by this utility model is ingeniously designed. It can achieve stable demolding after mold opening when the structure of the front mold part of the injection molded product is parallel to the mold opening direction and the structure of the rear mold part is inclined to the mold opening direction, which greatly improves the efficiency and quality of injection molded products. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a commonly used injection mold.

[0018] Figure 2 This is a schematic diagram of the ejector plate demolding structure for an injection mold according to an embodiment of the present invention before demolding.

[0019] Figure 3 This is a schematic diagram of the demolding structure of the inclined ejector plate for injection mold according to an embodiment of the present invention after demolding. Detailed Implementation

[0020] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Please refer to the reference. Figure 2 and Figure 3As shown, this utility model provides a slanted ejector plate demolding structure 100 for injection molds, used to complete the slanted demolding of the rear mold portion 103 of the injection molded product 101 along the second direction W after the mold is opened in the first direction X. It includes: B plate 1, pad block 2, rear mold base plate 3, rear mold core 4, first slanted pad plate 51, second slanted pad plate 52, slanted ejector pin 61, slanted ejector plate 62, slider 71 and ejector roller 72.

[0023] Two pads 2 are provided, which are respectively located at both ends on the same side of plate B 1. Each pad 2 is fixed between plate B 1 and the rear mold base plate 3 along the first direction X.

[0024] The rear mold core 4 is located on the side of plate B 1 away from the pad block 2.

[0025] One end of the first inclined pad 51 is set on the side of the B plate 1 near the rear mold base plate 3, and the other end face of the first inclined pad 51 is the first inclined surface 511.

[0026] One end of the second inclined pad 52 is set on the side of the rear mold base plate 3 near the B plate 1, and the other end face of the second inclined pad 52 is the second inclined surface 521. The first inclined surface 511 and the second inclined surface 521 are both perpendicular to the second direction W. The B plate 1, the two pads 2, the rear mold base plate 3, the first inclined pad 51 and the second inclined pad 52 together form the inclined sliding space 50.

[0027] The inclined ejector plate 62 is tilted and movable along the second direction W in the inclined sliding space 50. The top surface and bottom surface of the inclined ejector plate 62 are both perpendicular to the second direction W. The inclined ejector plate 62 is also provided with a sliding groove 620, the extension direction of which is perpendicular to the second direction W.

[0028] The angled ejector pin 61 is inclined along the second direction W. One end of the angled ejector pin 61 is vertically fixed in the angled ejector plate 62. The other end of the angled ejector pin 61 passes through the first angled pad 51, the B plate 1 and the rear mold core 4 in sequence along the second direction W, and is used to cooperate with the rear mold core 4 to form the cavity of the rear mold part 103 of the injection molded product 101.

[0029] One end of the slider 71 is slidably disposed in the groove 620, and both end faces of the slider 71 are perpendicular to the second direction W.

[0030] One end of the ejector pin 72 is obliquely connected to the other end face of the slider 71, and the other end of the ejector pin 72 passes through the rear mold base plate 3 along the first direction X.

[0031] Optionally, the projection of the top surface of the angled ejector plate 62 along the second direction W is located within the contour range of the first inclined surface 511. This prevents the angled ejector plate 62 from hitting the B plate 1 before it comes into contact with the first inclined surface 511.

[0032] Optionally, the angled ejector plate 62 includes an angled ejector face plate 621 and an angled ejector base plate 622. One end of the angled ejector 61 is inserted and fixed in the angled ejector face plate 621, and the end face of the angled ejector 61 abuts against the angled ejector base plate 622. A groove 620 is formed in the angled ejector base plate 622. Preferably, the angled ejector face plate 621 and the angled ejector base plate 622 are detachably connected by bolts. This facilitates the disassembly and maintenance of the angled ejector 61.

[0033] Optionally, the slide 620 can be a T-shaped through groove. This facilitates the fixing and installation of the slider 71.

[0034] Optionally, the slider 71 and the top roller 72 can be detachably fixed together. For example, they can be fixed by bolts or clips, which facilitates disassembly and maintenance.

[0035] Optionally, one end of the first inclined pad 51 is embedded in plate B 1, and the end face of one end of the first inclined pad 51 is a plane perpendicular to the first direction X. This facilitates the stable fixing of the first inclined pad 51.

[0036] Optionally, one end of the second inclined pad 52 is embedded in the rear mold base plate 3, and the end face of the second inclined pad 52 is a plane perpendicular to the first direction X. This facilitates the stable fixing of the second inclined pad 52.

[0037] Optionally, a waste pin 522 is provided on the side of the second inclined plate 52 closest to the first inclined plate 51. This reduces the contact area between the inclined ejector plate 62 and the second inclined plate 52, preventing the accumulation of waste and dust that could lead to improper mold closing.

[0038] Optionally, multiple angled ejector pins 61 are provided and evenly distributed in the rear mold portion 103 of the injection molded product 101. This facilitates more stable ejection of the injection molded product 101.

[0039] The operating principle of the inclined ejector plate demolding structure 100 for injection molds of this utility model is as follows: When the mold is opened, plate B1 moves away from plate A of the front mold along the first direction X. At this time, the front mold part 102 of the injection molded product 101 is fully exposed. Then, the ejector pin 72 moves closer to plate B1 along the first direction X and begins to push the slider 71 to slide in the slide groove 620, thereby driving the inclined ejector plate 62 to move closer to the first inclined pad 51 along the second direction W until the inclined ejector plate 62 is in contact with the first inclined surface 511 of the first inclined pad 51. At the same time, the inclined ejector pin 61, driven by the inclined ejector plate 62, pushes the rear mold part 103 of the injection molded product 101 obliquely out along the second direction W, thus completing the demolding.

[0040] When the mold is closed, the ejector pin 72 moves away from the B plate 1 along the first direction X, and the slider 71 slides in the slide groove 620, thereby driving the inclined ejector plate 62 to move closer to the second inclined pad 52 along the second direction W until the inclined ejector plate 62 rests on the second inclined pad 52, completing the reset of the inclined ejector pin 61.

[0041] The inclined ejector plate demolding structure for injection molds provided by this utility model is ingeniously designed. It can achieve stable demolding after mold opening when the front mold part of the injection molded product is parallel to the mold opening direction and the rear mold part is inclined to the mold opening direction, which greatly improves the efficiency and quality of injection molded products.

[0042] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A slanted ejector plate demolding structure for injection molds, used for slanted demolding of the rear mold portion of the injection-molded product along a second direction after mold opening in a first direction, characterized in that, The inclined ejector plate demolding structure includes: B plate, pad block, rear mold base plate, rear mold core, first inclined pad plate, second inclined pad plate, inclined ejector pin, inclined ejector plate, slider and ejector roller; There are two pads, which are respectively located at both ends on the same side of the B plate. The two ends of each pad are respectively fixed between the B plate and the rear mold bottom plate along the first direction. The rear mold core is located on the side of the B plate away from the pad block; One end of the first inclined pad is disposed on the side of the B plate near the rear mold bottom plate, and the other end face of the first inclined pad is the first inclined surface; One end of the second inclined pad is located on the side of the rear mold base plate near the B plate, and the other end face of the second inclined pad is a second inclined surface. The first inclined surface and the second inclined surface are both perpendicular to the second direction. The B plate, the two pads, the rear mold base plate, the first inclined pad and the second inclined pad together form an inclined sliding space. The inclined ejector plate is movably and tilted in the inclined sliding space. The top surface and bottom surface of the ejector plate are both perpendicular to the second direction. The inclined ejector plate is provided with a sliding groove, and the extension direction of the sliding groove is perpendicular to the second direction. The angled ejector pin is inclined along the second direction. One end of the angled ejector pin is vertically fixed inside the angled ejector pin plate. The other end of the angled ejector pin passes through the first angled pad plate, the B plate and the rear mold core in sequence along the second direction, and is used to cooperate with the rear mold core to form the cavity of the rear mold part of the injection molded product. One end of the slider is slidably disposed within the groove, and both end faces of the slider are perpendicular to the second direction; One end of the ejector pin is obliquely connected to the other end face of the slider, and the other end of the ejector pin passes through the rear mold base plate along the first direction.

2. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, The projection of the top surface of the inclined ejector plate along the second direction lies within the outline of the first inclined surface.

3. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, The inclined ejector plate includes an inclined ejector panel and an inclined ejector base plate. One end of the inclined ejector is inserted and fixed in the inclined ejector panel, and the end face of one end of the inclined ejector is close to the inclined ejector base plate. The groove is formed in the inclined ejector base plate.

4. The inclined ejector plate demolding structure for injection molds as described in claim 3, characterized in that, The angled ejector plate and the angled ejector base plate are detachably connected by bolts.

5. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, The groove is a T-shaped through groove.

6. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, The slider and the top rod are detachably fixed together.

7. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, One end of the first inclined pad is embedded in the B plate, and the end face of the first inclined pad is a plane perpendicular to the first direction.

8. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, One end of the second inclined pad is embedded in the rear mold base plate, and the end face of the second inclined pad is a plane perpendicular to the first direction.

9. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, The second inclined plate has a garbage nail on the side closest to the first inclined plate.

10. The inclined ejector plate demolding structure for injection molds as described in claim 1, characterized in that, Multiple angled ejector pins are provided and are evenly distributed in the rear mold area of ​​the injection molded product.

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