Pitched roof tripping mechanism and injection mold

Abstract

The utility model discloses a pitched roof tripping mechanism and an injection mold, the pitched roof tripping mechanism comprises a pitched roof rod and a tripping block, the tripping block is connected and linked with the pitched roof rod, the ejection displacement direction of the pitched roof rod is different from the sliding displacement direction of the tripping block, and the tripping block is driven by the pitched roof rod to synchronously displace along different directions. The tripping block is positioned and displaced in the through hole of the angle ejector rod in the displacement process, so that the tripping block is ejected out to be separated from the inverted buckle of the product; the inclined ejector rod which performs inclined ejection can eject a product out of the mold core, and the release block which is linked with the inclined ejector rod can be utilized to eject out and displace while the product is ejected out, so that the product is ejected and released, the effect of finishing inverted demolding in the ejection process is achieved, and the technical problems existing in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an inclined ejector release mechanism and an injection mold. Background Art

[0002] The product has an undercut, and the undercut is formed by bending its edge toward the inner cavity. Conventional release design for such products often utilizes a sloping top structure, but the sloping top structure has certain requirements on the inner cavity depth of the product. Therefore, for products with a smaller inner cavity depth, the sloping top structure cannot be directly used to realize the molding and demoulding of the undercut structure. Due to product limitations, it cannot be applied.

[0003] Therefore, how to process the undercut structure into the product and completely release it to avoid product damage 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 tilting ejection mechanism and an injection mold.

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

[0006] A tilting ejection mechanism, comprising a tilting ejector rod and a ejection block, wherein:

[0007] The inclined ejector rod is provided with a through hole;

[0008] One end of the release block is an undercut forming end, and the undercut forming end is arranged through the inclined ejector rod from the through hole, and the undercut forming end is exposed outside the inclined ejector rod;

[0009] The other end of the trip block extends out of the through hole and is slidably installed;

[0010] The ejection displacement direction of the inclined ejector rod is different from the sliding displacement direction of the tripping block;

[0011] The release block is synchronously displaced by the release block, and the release block is ejected and displaced from the inclined ejector rod to separate from the undercut of the product to achieve ejection release.

[0012] Further preferably, an angle is formed between the ejection displacement direction of the inclined ejector rod and the sliding displacement direction of the tripping block, and the angle is an acute angle.

[0013] Further preferably, the angle is 20°.

[0014] Further preferably, the two inclined lift rods are symmetrically distributed, and the two tripping blocks are symmetrically distributed.

[0015] An injection mold, comprising a movable mold assembly, a mold core and a tilt ejector release mechanism, wherein:

[0016] The movable die set includes an ejector plate set and a die block, and the die core is embedded in the die plate;

[0017] The inclined top release mechanism is the inclined top release mechanism mentioned above;

[0018] The inclined ejector rod is connected to the ejector plate assembly and driven by the ejector plate assembly to perform ejection displacement. The other end of the release block is slidably connected to the guide groove of the mold core.

[0019] Further preferably: the guide groove has a straight displacement section;

[0020] The straight displacement section is arranged along the ejection displacement direction of the ejection plate group.

[0021] Further preferably: the guide groove further has an oblique displacement section connected to the straight displacement section;

[0022] The oblique displacement section is arranged along the ejection direction of the inclined ejector rod.

[0023] Further preferably, the release block first slides and displaces along the straight displacement section, and then slides and displaces along the oblique displacement section during ejection and demoulding.

[0024] Further preferably, the two guide grooves are symmetrically distributed, and the two oblique displacement sections are butt-jointed and connected.

[0025] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0026] The utility model connects a release block with an inclined ejector rod and they are linked together; the ejection displacement direction of the inclined ejector rod is different from the sliding displacement direction of the release block; the release block is driven by the inclined ejector rod to synchronously displace in different directions; the release block is positioned and displaced from the through hole of the inclined ejector rod during the displacement process, so as to realize the ejection of the release block and separate it from the undercut of the product; the inclined ejector rod that performs oblique ejection can eject the product from the mold core, and while ejecting the product, the ejection displacement of the release block linked with the inclined ejector rod can be utilized, so as to realize the ejection and release of the product, so as to achieve the undercut demoulding effect during the ejection process, and solve the technical problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional cross-sectional view of the injection mold with the inclined top release mechanism described in the embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A front view of the structure shown;

[0029] Figure 3 It is a structural stereoscopic schematic diagram of the inclined top release mechanism described in the embodiment of the utility model;

[0030] Figure 4 yes Figure 3 a cross-sectional view of the structure shown;

[0031] Figure 5 It is a three-dimensional schematic diagram of the structure of the mold core described in the embodiment of the utility model;

[0032] Figure 6 yes Figure 5 a cross-sectional view of the structure shown;

[0033] Figure 7 It is a schematic diagram of the ejection structure of the injection mold with the inclined ejector release mechanism in the ejection process described in the embodiment of the utility model;

[0034] Figure 8 yes Figure 7 A schematic cross-sectional view of the ejection structure of the inclined ejection release mechanism in the ejection process is shown.

[0035] The symbols of the drawings in the above specification are explained as follows:

[0036] 110, base plate; 120, square iron; 130, formwork;

[0037] 200, ejector plate assembly;

[0038] 300, mold core; 310, demoulding cavity; 311, ejection groove; 312, guide groove;

[0039] 400, tilted ejector release mechanism; 410, tilted ejector rod; 420, release block; 430, guide block. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0041] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are 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, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Example

[0043] like Figure 3 and Figure 4As shown, the utility model discloses an inclined ejector release mechanism 400, which includes an inclined ejector rod 410 and a release block 420. The inclined ejector rod 410 drives the release block 420 to move synchronously, and drives the release block 420 to be ejected from the inclined ejector rod 410. The release block 420 is ejected from the injection molded product through the ejection movement to complete the release action, thereby being able to adapt to the undercut structure of the product. While simplifying the mold structure, it can also effectively and completely eject the product, thereby achieving the purpose of rapid demolding and improving product processing efficiency.

[0044] like Figure 3 and Figure 4 As shown, the ejection and release mechanism includes an inclined ejector rod 410 and a release block 420. The inclined ejector rod 410 is provided with a through hole. The release block 420 penetrates into the through hole and can be driven by the inclined ejector rod 410 to move in the release direction, thereby being released from the inverted structure of the product.

[0045] like Figure 3 and Figure 4 As shown, the inclined ejector rod 410 includes a rod body, a slider, and a guide block. The slider is fixedly installed, and a slide groove is provided on the slider. The sliding direction of the slide groove is generally opposite to the direction in which the slider is driven to eject. One end of the rod body is a sliding end that is slidably connected to the slide groove of the slider. The other end of the rod body is a molding end. The outer surface of the molding end is adapted to the product to be injected. The guide block is sleeved on the rod body and is arranged close to the slider. The slider is driven to perform ejection displacement, and the rod body slides in the slider. The rod body driven to slide displacement is restricted by the guide block to achieve oblique ejection. During the ejection process of the rod body, the molding end can drive the product to be ejected and demolded. Specifically, the rod body includes a rod portion and a molding portion that are integrally connected. The rod portion is slidably connected to the slider, and the molding portion is placed on the rod portion and is arranged away from the slider.

[0046] like Figure 3 and Figure 4 As shown, the inclined ejector rod 410 is provided with a through hole. Specifically, the molding portion of the rod body in the inclined ejector rod 410 is provided with a through hole, and the through hole is a hole that penetrates the rod body. In other words, the through hole can connect the two sides of the rod body. The rod body is set in two directions, inner and outer, in its sliding direction. The slider drives the rod body, and the rod body slides from one end of the slide groove to the other end. The end of the rod body corresponding to the slide groove is the outer side, and the other end corresponding to the slide groove is the inner side. In this embodiment, the through hole is a through hole that can connect the inner and outer sides of the rod body.

[0047] like Figure 3 and Figure 4As shown, the release block 420 is inserted into the through hole of the inclined ejector rod 410 and is driven by the inclined ejector rod 410 to perform synchronous displacement movement. One end of the release block 420 is the undercut forming end of the product. After the release block 420 is driven to eject, the undercut forming end is disengaged from the product to achieve ejection release. Specifically: the release block 420 is a block, one end of which is hinged, and the other end is the undercut forming end, the undercut forming end extends into the through hole of the inclined ejector rod 410, and extends out from the through hole, and is exposed outside the inclined ejector rod 410, the undercut forming end of the release block 420 cooperates with the inclined ejector rod 410 to adapt to the shape of the product to complete the forming of the product and the product undercut, in other words: the release block 420 is inserted in the inclined ejector rod 410, and during the ejection movement of the inclined ejector rod 410, the inclined ejector rod 410 drives the release block 420 to perform ejection displacement synchronously, the release block 420 is slidably installed at one end, and the release block 420 is ejected from the inclined ejector rod 410 while performing ejection displacement synchronously with the inclined ejector rod 410, so that the undercut forming end of the release block 420 is ejected from the through hole to disengage from the undercut of the product, thereby achieving the ejection release of the product.

[0048] like Figure 3 and Figure 4 As shown, the two inclined ejectors 410 are symmetrically distributed, and a guide block 430 is arranged between the two inclined ejectors 410. Specifically, the guide block 430 is provided with two guide surfaces, and the two guide surfaces are inclined surfaces and symmetrically distributed, and each of the guide surfaces is an inclined surface inclined along the ejection direction of the inclined ejector 410; the side surface of the molding part of the rod body in the inclined ejector 410 is tightly attached to the guide surface of the guide block 430; when the inclined ejector 410 is driven to eject obliquely, the two inclined ejectors 410 are ejected in a direction close to each other. It should be noted that the guide block 430 is placed between the two symmetrically distributed inclined ejectors 410, but is not connected to any of the inclined ejectors 410. In other words, the ejection operation and reset movement of any of the inclined ejectors 410 will not drive the guide block 430 to move, so that when the inclined ejector 410 moves, the guide block 430 is in a relatively static state.

[0049] like Figure 3 and Figure 4 As shown, the two tripping blocks 420 are symmetrically distributed along the two inclined lift rods 410 , and the sliding ends of the two tripping blocks 420 are placed between the two inclined lift rods 410 and below the guide block 430 .

[0050] like Figure 1 and Figure 2As shown, an injection mold has a movable mold group, the movable mold group includes a bottom plate 110, a square iron 120, a template 130 and an ejector plate group 200, the movable mold group is also equipped with a mold core 300, and the ejector plate group 200 is installed with the ejector release structure. The two square irons 120 are symmetrically distributed and fixed on the bottom plate 110, the template 130 is fixed on the two square irons 120, and there is a cavity between the template 130, the square iron 120 and the bottom plate 110, which is an ejector cavity. The ejector plate group 200 is placed in the ejector cavity and is driven to perform ejection displacement in the ejector cavity.

[0051] like Figure 1 and Figure 2 As shown, a groove is provided on a side of the template 130 facing away from the base plate 110, and a mold core 300 is installed in the groove. The mold core 300 is a block with an inverted T-shaped cross-section, which includes a horizontal portion and a vertical portion that are integrally connected. The horizontal portion is fixed to the bottom surface of the groove of the template 130, and the vertical portion is placed in the groove.

[0052] like Figure 2 , Figure 5 and Figure 6 As shown, the mold core 300 is provided with a demoulding cavity 310. In this embodiment, a U-shaped groove opening toward the horizontal part is provided in the vertical part of the mold core 300 to form the demoulding cavity 310; the mold core 300 is provided with a clearance hole allowing the inclined ejector rod 410 to pass through, the clearance hole is connected with the demoulding cavity 310, and the symmetrical part of the demoulding cavity 310 is adapted to the molding part of the rod body in the inclined ejector rod 410, and the adapted part is an ejection groove 311; a guide groove 312 is provided on the side wall of each ejection groove 311, and the two guide grooves 312 are symmetrically distributed.

[0053] In detail: Figure 2 and Figure 6 As shown, the guide groove 312 is a groove, which includes a straight displacement section and an oblique displacement section that are interconnected. The straight displacement section is a straight groove section arranged along the ejection displacement direction of the ejector plate group, and the oblique ejector displacement section is an oblique groove section consistent with the oblique ejection displacement direction of the inclined ejector rod 410. The oblique displacement section is arranged farther away from the horizontal part of the mold core 300 than the straight displacement section. The two guide grooves 312 are symmetrically distributed, and the oblique displacement sections of the two guide grooves 312 are butt-jointed and connected to form a V-shape with the opening facing the bottom plate 110.

[0054] like Figure 1 and Figure 2As shown, the template 130 is provided with a through hole, the through hole is connected to the clearance hole, and the through hole, the clearance hole and the ejection groove 311 are connected to each other to form a movement cavity adapted to the inclined ejector rod 410 and allowing the inclined ejector rod 410 to move. It should also be noted that the side of the template 130 facing the bottom plate 110 is also provided with an embedding groove.

[0055] like Figure 1 and Figure 2 As shown, the inclined ejector rod 410 is installed in the movable mold assembly, and is driven by the ejector plate assembly 200 to be ejected from the mold core 300, thereby driving the product to be demolded. Specifically: the slider of the inclined ejector rod 410 is embedded in the groove of the ejector plate assembly 200, so that the displacement of the ejector plate assembly 200 in the ejection cavity drives the rod body of the inclined ejector rod 410 to eject and slide; the guide block in the inclined ejector rod 410 is embedded in the embedding groove, the rod body is assembled in the movement cavity, and the molding part of the rod body is placed in the guide groove 312.

[0056] like Figures 1 to 6 As shown, the sliding end of the release block 420 is provided with a connecting through hole, and a sliding shaft is inserted into the connecting through hole. The sliding shaft is connected to the release block 420 and moves synchronously. One end of the sliding shaft is inserted into the guide groove 312 of the mold core 300, and the sliding shaft is slidably connected to the guide groove 312; the undercut molding end of the release block 420 extends into the through hole of the rod body of the inclined ejector rod 410, and extends out of the through hole and is exposed outside the inclined ejector rod 410. In other words: the release block 420 is inserted into the inclined ejector rod 410, and during the ejection movement of the inclined ejector rod 410, the inclined ejector rod 410 drives the release block 420 to perform ejection displacement synchronously. The release block 420 first slides and displaces along the straight displacement section of the guide groove 312. Because the inclined ejector rod 410 is ejected along the inclined direction, the ejection displacement direction of the inclined ejector rod 410 and the sliding displacement of the release block 420 along the straight displacement section of the guide groove 312 are The directions are different, so that the release block 420 can be ejected from the inclined ejector rod 410 to achieve ejection displacement. After the release block 420 completes the displacement of the straight displacement section of the guide groove 312, it slides and displaces along the oblique displacement section of the guide groove 312. The displacement of the release block 420 along the oblique displacement section is consistent with the ejection displacement direction of the inclined ejector rod 410. At this time, the release block 420 retracts into the inclined ejector rod 410 again, thereby achieving product ejection release.

[0057] It should be noted that: Figures 1 to 6As shown, the guide block 430 is fixed in the mold core 300 by a pin and is located between the two symmetrically distributed inclined ejector rods 410. When the two inclined ejector rods 410 are driven by the ejection plate group 200 to perform synchronous ejection displacement, the two inclined ejector rods 410 are synchronously ejected relative to the guide block 430 in a direction approaching each other; the release block 420 on each inclined ejector rod 410 also performs a release rotation synchronously.

[0058] like Figures 7 and 8 As shown, the state structure diagram of the inclined ejector 410 during the ejection process, and Figure 1 and Figure 8 The entire ejection process is divided into three state structures, namely: state A, state B and state C;

[0059] State A: It is a structural diagram of the mold closing and / or non-ejection state. The specific structure of this state is as follows:

[0060] The ejection plate assembly 200 is close to the base plate 110, the inclined ejector rod 410 is in a non-ejected state, the molded portion of the rod body of the inclined ejector rod 410 is placed in the ejection groove 311 of the mold core 300, the release block 420 is not driven, and the undercut molded end of the release block 420 is exposed on the inclined ejector rod 410.

[0061] State B: It is a structural diagram in the mold opening state and in the ejection process. The specific structure of this state is as follows:

[0062] The ejection plate group 200 performs ejection displacement but does not conflict with the template 130. The two inclined ejector rods 410 are driven by the ejection plate group 200. The formed portion of the inclined ejector rod 410 is ejected from the ejection groove 311 along the inclined guide surface of the guide block 430. The release block 420 slides and displaces along the straight displacement section of the guide groove 312. Because the inclined ejector rod 410 is ejected along the inclined direction, the ejection displacement direction of the inclined ejector rod 410 and the sliding displacement direction of the release block 420 along the straight displacement section of the guide groove 312 are different, so that the release block 420 can be ejected from the inclined ejector rod 410 to achieve ejection displacement, thereby releasing the release block 420 from the product.

[0063] State C: It is a structural diagram after ejection is completed. The specific structure of this state is as follows:

[0064] The ejection plate assembly 200 continues to be ejected and displaced toward the template 130 until the ejection plate assembly 200 is pressed against the template 130, and the inclined ejector rod 410 continues to be ejected and displaced along the inclined direction. At this time, the inclined displacement section of the guide groove 312 of the tripping block 420 slides and displaces, and the displacement of the tripping block 420 along the inclined displacement section is consistent with the ejection displacement direction of the inclined ejector rod 410. At this time, the tripping block 420 retracts into the inclined ejector rod 410 again, thereby completing the ejection and tripping of the product.

[0065] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A tilting release mechanism, characterized in that: It includes a tilting rod and a tripping block, wherein: The inclined ejector rod is provided with a through hole; One end of the release block is an undercut forming end, and the undercut forming end is arranged through the inclined ejector rod from the through hole, and the undercut forming end is exposed outside the inclined ejector rod; The other end of the trip block extends out of the through hole and is slidably installed; The ejection displacement direction of the inclined ejector rod is different from the sliding displacement direction of the tripping block; The release block is synchronously displaced by the release block, and the release block is ejected and displaced from the inclined ejector rod to separate from the undercut of the product to achieve ejection release.

2. The tilting release mechanism according to claim 1, characterized in that: An angle is formed between the ejection displacement direction of the inclined ejector rod and the sliding displacement direction of the tripping block, and the angle is an acute angle.

3. A tilting release mechanism according to claim 2, characterized in that: The angle is 20°.

4. The tilting release mechanism according to claim 1, characterized in that: The two inclined lift rods are symmetrically distributed, and the two tripping blocks are symmetrically distributed.

5. An injection mold, characterized in that: It includes a moving die set, a die core and a tilting ejection mechanism, wherein: The movable die set includes an ejector plate set and a die block, and the die core is embedded in the die plate; The tilt top release mechanism is the tilt top release mechanism according to any one of claims 1 to 4; The inclined ejector rod is connected to the ejector plate assembly and driven by the ejector plate assembly to perform ejection displacement. The other end of the release block is slidably connected to the guide groove of the mold core.

6. An injection mold according to claim 5, characterized in that: The guide groove has a straight displacement section; The straight displacement section is arranged along the ejection displacement direction of the ejection plate group.

7. An injection mold according to claim 6, characterized in that: The guide groove also has an oblique displacement section connected to the straight displacement section; The oblique displacement section is arranged along the ejection direction of the inclined ejector rod.

8. An injection mold according to claim 7, characterized in that: During the ejection and demoulding process, the release block first slides along the straight displacement section, and then slides along the oblique displacement section.

9. The injection mold according to claim 7, characterized in that: The two guide grooves are symmetrically distributed, and the two oblique displacement sections are butt-jointed and connected.

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