Local secondary ejection mechanism of mold

Abstract

The utility model discloses a local secondary ejection mechanism of a mold, which comprises a base plate, an ejection plate group and a bottom plate which are arranged in sequence, and the ejection plate group is driven to move towards the base plate to eject a product; the device further comprises an inclined rod and a secondary ejection mechanism. The inclined rod is assembled between the base plate and the bottom plate, the secondary ejection mechanism is assembled on the ejection plate group, the secondary ejection mechanism comprises a straight ejection structure and an inclined ejection structure, the straight ejection structure comprises an ejection block, an ejector pin and a sliding block, the sliding block is installed in a sliding groove of the ejection plate group in a sliding mode, and the sliding block is provided with an ejection inclined plane; one end of the ejector pin penetrates through the base plate to be fixedly connected with the ejector block, and the other end of the ejector pin abuts against the sliding block. The sliding block is connected with the inclined rod in a sliding manner; when the ejector pin is pushed out, the sliding block which is pushed out and displaced is driven by the inclined rod to slide and displace in the sliding groove, and the ejector pin displaces along the pushing-out inclined face of the sliding block so as to slow down the pushing-out speed of the ejector pin and slowly push out a product.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a local secondary ejection mechanism of a mold. Background Art

[0002] Typically, after injection molding is complete, the product needs to be ejected from the mold in a single operation. However, due to the unique shapes and long ejection strokes of some products, the product often remains trapped in the mold cavity after a single ejection and cannot automatically fall out. Therefore, a second ejection operation is required, known as a secondary ejection method. However, in actual production, the secondary ejection mechanism relies on pneumatic and hydraulic equipment to complete the secondary ejection operation, resulting in a complex structure and poor stability, which significantly increases processing and production costs.

[0003] Therefore, how to improve the secondary ejection mechanism of the mold so that the mold can use a secondary ejection mechanism with a simpler structure and more stable operation to complete the secondary ejection work during the mold opening and ejection process is one of the technical problems that technicians in this field need to solve. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a local secondary ejection mechanism for a mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The ejector plate is driven by the inclined rod to move toward the backing plate to eject the product, and further comprises an inclined rod and a secondary ejector mechanism; the inclined rod is assembled between the backing plate and the bottom plate, and the secondary ejector mechanism is assembled on the ejector plate group; the secondary ejector mechanism comprises a straight ejection structure and an inclined ejection structure, the straight ejection structure comprises an ejection block, an ejector pin and a slider, wherein: the slider is slidably mounted in a slide groove of the ejector plate group, and the slider has an ejection inclined surface; one end of the ejector pin passes through the backing plate and is fixedly connected to the ejection block, and the other end of the ejector pin contacts the slider; the slider is slidably connected to the inclined rod; the slider that is ejected is driven by the inclined rod to slide and move in the slide groove, and the ejector pin moves along the ejection inclined surface of the slider to slow down the ejection speed of the ejector pin and slowly eject the product.

[0007] Further preferably, the other end of the ejector pin is provided with a sliding portion, the sliding portion has a sliding inclined surface, and the sliding inclined surface is adapted to the ejection inclined surface.

[0008] Further preferably, the slider is provided with a directional hole, and the oblique rod is provided through the directional hole to drive the slider to slide in the slide groove while being ejected.

[0009] Further preferably, the cross section of the slider along the mold opening direction is trapezoidal, and the surface of one side of the hypotenuse of the trapezoid is the ejection slope of the slider.

[0010] Further preferably, the ejector plate assembly includes a stacked upper panel and a lower panel, wherein the lower panel is provided with the slide groove; the ejector pin passes through the upper panel and extends into the slide groove to abut against the slider.

[0011] Further preferably, the inclined ejector structure includes an inclined ejector base and an inclined ejector pin, one end of the inclined ejector base is fixedly connected to the ejector plate assembly, and one end of the inclined ejector base away from the ejector plate is slidably connected to the inclined ejector pin.

[0012] Further preferred: the inclined top base includes an inclined top slide groove, a positioning groove and a give way groove, the inclined top slide groove is arranged at an end away from the ejection plate group, and the opening direction of the inclined top slide groove is toward the pad; the positioning groove and the give way groove are arranged on the outer surface of one side of the inclined top base close to one end of the upper panel.

[0013] Further preferably, the positioning groove and the giving way groove are connected to each other; the opening directions of the positioning groove and the giving way groove are both perpendicular to the outer surface of the inclined top base.

[0014] Further preferably, two ends of the oblique rod are fixedly connected to the pad and the bottom plate through an upper fixing block and a lower fixing block respectively.

[0015] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0016] This technical solution adds a slider and an ejector pin with an inclined surface to the secondary ejection mechanism, so that the slider drives the ejector pin to separate from the product during ejection displacement, and the secondary ejection of the inclined ejection structure realizes complete ejection and separation of the product. Firstly, the secondary ejection mechanism in this technical solution is simple and easy to implement, which helps to reduce processing and production costs. Secondly, during the secondary ejection and reset processes, the inclined surface interference structure realizes smooth and stable movement of the sliding block, thereby achieving the purpose of improving the operational stability of the secondary ejection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a partial secondary ejection mechanism of a mold described in an embodiment of the present utility model;

[0018] Figure 2This is a schematic diagram of the ejection state of a partial secondary ejection mechanism of a mold described in an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the slider in the embodiment of the present utility model.

[0020] The symbols of the drawings in the above description are as follows:

[0021] 100, pad;

[0022] 200, bottom plate;

[0023] 300, product; 310, product ribs;

[0024] 400, secondary ejection mechanism;

[0025] 410, straight top structure; 411, top block; 412, top pin; 413, sleeve sleeve; 414, upper panel; 415, lower panel; 416, slider; 417, directional hole; 418, slide groove;

[0026] 420, inclined top structure; 421, inclined top pin; 422, inclined top base;

[0027] 500, guide structure;

[0028] 510, upper fixed block; 520, diagonal rod; 530, lower fixed block. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element of the present invention must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] Example

[0032] like Figure 1 and Figure 2As shown, the utility model discloses a local secondary ejection mechanism of a mold, comprising a pad 100, a bottom plate 200, an ejection plate group, a guide structure 500 and a secondary ejection mechanism 400, wherein the pad 100 is arranged on the bottom plate 200 along the mold opening direction, and a gap is formed between the pad 100 and the bottom plate 200, and the ejection plate group and the guide structure 500 are respectively assembled in the gap formed between the pad 100 and the bottom plate 200, and the secondary ejection mechanism 400 is assembled on the ejection plate group, and the guide structure 500 slides with the secondary ejection mechanism 400. Dynamic connection; the pad 100 includes a clearance through hole and a pad accommodating groove, the clearance through hole penetrates the pad 100 along the mold opening direction, and the cross-section of the clearance through hole along the mold opening direction is rectangular; the pad accommodating groove is opened on the surface of the pad 100 facing the bottom plate 200 along the mold opening direction, and the opening direction of the pad accommodating groove is toward the bottom plate 200; the bottom plate 200 includes a bottom plate accommodating groove, the bottom plate accommodating groove is opened on the surface of the bottom plate 200 facing away from the pad 100 along the mold opening direction, and the opening direction of the bottom plate accommodating groove is away from the pad 100.

[0033] like Figure 1 and Figure 2 As shown, the guide structure 500 includes an upper fixed block 510, an inclined rod 520 and a lower fixed block 530. One end of the inclined rod 520 is fixedly connected to the upper fixed block 510, and the other end of the inclined rod 520 is fixedly connected to the lower fixed block 530. The inclined rod 520 is slidably connected to the secondary ejection mechanism 400.

[0034] Specifically: the upper fixed block 510 is assembled in the pad accommodating groove, the lower fixed block 530 is assembled in the bottom plate accommodating groove, one end of the inclined rod 520 is fixedly connected to the upper fixed block 510, and the end of the inclined rod 520 away from the upper fixed block 510 passes through the secondary ejection mechanism 400 and is slidably connected to the secondary ejection mechanism 400, extending toward the bottom plate 200, and extending into the bottom plate 200 and fixedly connected to the lower fixed block 530.

[0035] like Figure 1 and Figure 2As shown, the ejector plate assembly includes an upper panel 414 and a lower panel 415, the upper panel 414 being fixed to the lower side along the mold opening direction; the lower panel 415 is provided with a slide groove 418 along the mold opening direction, the cross section of the slide groove 418 along the mold opening direction is rectangular, the opening direction of the slide groove 418 faces the upper panel 414 and contacts the upper panel 414; the slide groove 418 is provided with a limiting through hole, and the limiting through hole passes through the bottom of the slide groove 418 along the mold opening direction; the end of the inclined rod 520 away from the upper fixed block 510 passes through the upper panel 414 and extends into the slide groove 418, and passes through the limiting through hole at the bottom of the slide groove 418 and extends toward the bottom plate 200, and extends into the bottom plate 200 and is fixedly connected to the lower fixed block 530, so that the inclined rod 520 is slidably connected to the ejector plate assembly, thereby making the ejector plate assembly slidably connected to the guide structure 500;

[0036] like Figure 1 and Figure 2 As shown, the secondary ejection mechanism 400 includes a slanted top structure 420 and a straight top structure 410, and the slanted top structure 420 and the straight top structure 410 are respectively assembled on the ejection plate group, the slanted top structure 420 is slidably connected to the guide structure 500 and contacts the product 300; the straight top structure 410 is slidably connected to the guide structure 500; the straight top structure 410 contacts the product 300 and contacts the product ribs 310.

[0037] like Figure 1 and Figure 2 As shown, the inclined ejection structure 420 includes an inclined ejection base 422 and an inclined ejection pin 421; the ejection plate assembly is fixedly connected to the inclined ejection base 422 and slidably connected to the guide structure 500; the inclined ejection base 422 is slidably connected to the inclined ejection pin 421, and the inclined ejection pin 421 contacts the product 300;

[0038] Specifically: one end of the inclined top base 422 passes through the upper panel 414 along the mold opening direction, and the inclined top base 422 is fixedly connected to the upper panel 414; the end of the inclined top base 422 away from the upper panel 414 extends toward the backing plate 100 along the mold opening direction; the end of the inclined top base 422 away from the upper panel 414 is also provided with an inclined top slide 418, and the opening direction of the inclined top slide 418 is toward the backing plate 100; one end of the inclined top pin 421 extends into the inclined top slide 418 and is slidably connected to the inclined top slide 418; the end of the inclined top pin 421 away from the inclined top base 422 passes through the clearance hole of the backing plate 100, and extends toward the product 300 at a certain angle to the mold opening direction, and contacts the product 300;

[0039] A positioning groove and a clearance groove are further provided on the outer surface of one side of the inclined top base 422 along the mold opening direction. The positioning groove is provided at an end close to the upper panel 414, and the clearance groove is provided at an end away from the upper panel 414. The positioning groove and the clearance groove are connected to each other. The opening directions of the positioning groove and the clearance groove are both perpendicular to the outer surface of the inclined top base 422.

[0040] When the ejector plate group is driven, the ejector plate group drives the inclined ejector base 422 to perform ejection displacement along the mold opening direction back toward the bottom plate 200, and the inclined ejector base 422 drives the inclined ejector pin 421 to perform ejection displacement along the mold opening direction back toward the bottom plate 200, thereby ejecting the product 300.

[0041] like Figures 1 to 3 As shown, the straight top structure 410 includes a sleeve sleeve 413, a top block 411, an ejector pin 412 and a slider 416; the slider 416 is assembled in the slide groove 418 and slides along the slide groove 418, and the slider 416 is slidably connected to the inclined rod 520; the ejector block 411 is fixedly connected to one end of the ejector pin 412 and contacts the product 300 and the product rib 310; the end of the ejector pin 412 away from the ejector block 411 passes through the backing plate 100 and the sleeve sleeve 413 along the mold opening direction, extends into the upper panel 414, extends toward the bottom plate 200, and contacts the slider 416, and the ejector pin 412 is fixedly connected to the sleeve sleeve 413;

[0042] Specifically: the sleeve sleeve 413 passes through the positioning groove and extends into the clearance groove along the mold opening direction; the sleeve sleeve 413 includes a limiting portion and a positioning portion, and the limiting portion is fixedly connected to the positioning portion; the limiting portion and the positioning portion are an integrally injection-molded cylindrical structure; the limiting portion and the positioning portion have the same inner diameter and are connected, and the outer diameter of the positioning portion is larger than that of the limiting portion; the positioning portion extends into the positioning groove, and the limiting portion passes through the positioning groove along the mold opening direction, extends toward the pad 100, and extends into the clearance groove;

[0043] The cross-section of the ejector block 411 along the mold opening direction is rectangular, with the short side of the rectangle away from the backing plate 100 along the mold opening direction being the upper short side, and the short side close to the backing plate 100 being the lower short side; one side of the upper short side of the ejector block 411 contacts the product 300, and one side of the lower short side of the ejector block 411 is fixedly connected to the ejector pin 412; one long side of the ejector block 411 contacts the product rib 310;

[0044] The end of the ejector pin 412 away from the ejector block 411 passes through the clearance hole of the pad 100, the clearance groove of the inclined ejector base 422 and the sleeve sleeve 413 in sequence until it contacts the slider 416; the ejector pin 412 is fixedly connected to the sleeve sleeve 413; the end of the ejector pin 412 away from the ejector block 411 is provided with a sliding portion, which is fixedly connected to the ejector pin 412 and formed integrally; the cross-section of the sliding portion along the mold opening direction is trapezoidal, and the surface of the hypotenuse of the trapezoid is the sliding inclined surface of the sliding portion;

[0045] The slider 416 includes a directional hole 417, which passes through the slider 416 along the mold opening direction. The directional hole 417 is a long strip-shaped through hole; the inclined rod 520 passes through the upper panel 414 and extends into the slide groove 418, and passes through the directional hole 417 and the limiting through hole at the bottom of the slide groove 418 and extends toward the bottom plate 200, so that the slider 416 is slidably connected to the inclined rod 520; Figure 3 As shown, when the ejector plate group drives the slider 416 to move toward the bottom plate 200 along the mold opening direction, the inclined rod 520 moves from a to b in the directional hole 417, and the inclined rod 520 drives the slider 416 to move along the chute 418. Figure 1 Move in the direction shown;

[0046] The cross section of the slider 416 along the mold opening direction is trapezoidal, and the surface of one side of the hypotenuse of the trapezoid is the ejection slope of the slider 416; the angle of the ejection slope is adapted to the angle of the sliding slope; preferably, in this embodiment, the angle of the ejection slope and the angle of the sliding slope are 45 degrees with respect to the mold opening direction;

[0047] When the ejector plate assembly is driven, the ejector plate assembly drives the slider 416 to move toward the bottom plate 200 along the mold opening direction to eject the product 300. The slider 416 drives the ejector pin 412 and the ejector block 411 to move toward the bottom plate 200 along the mold opening direction to eject the product 300. When the inclined rod 520 moves from a to b in the directional hole 417, the inclined rod 520 drives the slider 416 to move toward the bottom plate 200 along the mold opening direction to eject the product 300. Figure 1 Move in the direction shown; Figure 2As shown, when the ejection slope collides with the sliding slope and the ejection slope and the sliding slope produce relative displacement, the ejector pin 412 drives the ejector block 411 and the ejector plate assembly to produce relative displacement, and the ejector pin 412 drives the ejector block 411 to move relative to the ejector plate along the mold opening direction toward the bottom plate 200, so that the ejector block 411 is separated from the product 300, and the side surface of the ejector block 411 is partially separated from the product rib 310; at this time, the ejector plate assembly continues to perform ejection displacement along the mold opening direction away from the bottom plate 200 until the surface of one side of the long side of the ejector block 411 is completely separated from the product rib 310; when the ejection displacement is completed, the straight ejection structure 410 needs to be reset, and the ejector plate assembly is driven to move toward the bottom plate 200 along the mold opening direction, and the inclined rod 520 drives the slider 416 to move along the slide groove 418 Figure 2 The slider 416 moves in the direction shown, and the ejector pin 412 is driven to return to its original position along the mold opening direction.

[0048] In summary, if Figures 1 to 3 As shown, the working principle of the local secondary ejection mechanism of the mold is as follows:

[0049] Step 1: First ejection:

[0050] When the mold is opened and ejection is required, the ejector plate group is driven, and the ejector plate group drives the inclined ejector base 422 and the slider 416 to perform ejection displacement along the mold opening direction; the inclined ejector base 422 drives the inclined ejector pin 421 to eject along the mold opening direction back toward the bottom plate 200 for ejection displacement, thereby ejecting the product 300; at the same time, the slider 416 drives the ejector pin 412 and the ejector block 411 to eject along the mold opening direction back toward the bottom plate 200 for ejection displacement, thereby ejecting the product 300.

[0051] Step 2: Second ejection:

[0052] like Figure 3 As shown, when the inclined rod 520 moves from a to b in the directional hole 417, the inclined rod 520 drives the slider 416 to move along the sliding groove 418. Figure 1 Move in the direction shown; Figure 2As shown, when the ejection slope collides with the sliding slope and the ejection slope and the sliding slope produce relative displacement, the ejector pin 412 drives the ejector block 411 and the ejector plate assembly to produce relative displacement; the ejector pin 412 drives the ejector block 411 to move relative to the ejector plate along the mold opening direction toward the bottom plate 200, thereby separating the ejector block 411 from the product 300, and the side surface of the ejector block 411 partially separates from the product rib 310; at this time, the ejector plate assembly continues to drive the inclined ejection base 422, and the inclined ejection base 422 drives the inclined ejector pin 421 to perform ejection displacement along the mold opening direction until the side surface of the ejector block 411 completely separates from the product rib 310, and the product 300 is completely ejected.

[0053] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A partial secondary ejection mechanism for a mold, comprising a backing plate, an ejector plate assembly, and a bottom plate arranged in sequence, wherein the ejector plate assembly is driven to move toward the backing plate to eject the product, characterized in that: It also includes an inclined rod and a secondary ejection mechanism; the inclined rod is assembled between the pad and the bottom plate, and the secondary ejection mechanism is assembled on the ejection plate assembly; The secondary ejection mechanism includes a straight ejection structure and an inclined ejection structure. The straight ejection structure includes an ejection block, an ejector pin and a slider, wherein: The slider is slidably mounted in the slide groove of the ejection plate assembly, and the slider has an ejection inclined surface; One end of the ejector pin passes through the backing plate and is fixedly connected to the ejector block, and the other end of the ejector pin contacts the slider; The slider is slidably connected to the oblique rod; The slider during ejection displacement is driven by the inclined rod and slides in the slide groove, and the ejector pin is displaced along the ejection inclined surface of the slider to slow down the ejection speed of the ejector pin and slowly eject the product.

2. The local secondary ejection mechanism of a mold according to claim 1, characterized in that: The other end of the ejector pin is provided with a sliding portion, and the sliding portion has a sliding inclined surface, and the sliding inclined surface is adapted to the ejection inclined surface.

3. The local secondary ejection mechanism of a mold according to claim 2, characterized in that: The slider is provided with a directional hole, and the oblique rod is provided through the directional hole to drive the slider to slide and displace in the slide groove while being ejected.

4. The local secondary ejection mechanism of a mold according to claim 3, characterized in that: The cross section of the slider along the mold opening direction is trapezoidal, and the surface of one side of the hypotenuse of the trapezoid is the ejection inclined surface.

5. The local secondary ejection mechanism of a mold according to claim 1, characterized in that: The ejector plate assembly includes a stacked upper panel and a lower panel, wherein: The lower panel is provided with the slide groove; The ejector pin passes through the upper panel and extends into the slide groove, thereby abutting against the slider.

6. The partial secondary ejection mechanism of a mold according to claim 5, characterized in that: The inclined ejector structure includes an inclined ejector base and an inclined ejector pin. One end of the inclined ejector base is fixedly connected to the ejection plate assembly, and one end of the inclined ejector base away from the ejection plate is slidably connected to the inclined ejector pin.

7. The local secondary ejection mechanism of a mold according to claim 6, characterized in that: The inclined top base includes an inclined top slide groove, a positioning groove and a give way groove. The inclined top slide groove is arranged at an end away from the ejection plate group, and the opening direction of the inclined top slide groove is toward the pad; the positioning groove and the give way groove are arranged on the outer surface of one side of the inclined top base close to one end of the upper panel.

8. The local secondary ejection mechanism of a mold according to claim 7, characterized in that: The positioning groove and the giving way groove are connected; the opening directions of the positioning groove and the giving way groove are both perpendicular to the outer surface of the inclined top base.

9. The local secondary ejection mechanism of a mold according to claim 1, characterized in that: The two ends of the oblique rod are fixedly connected to the pad and the bottom plate through an upper fixing block and a lower fixing block respectively.

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