An inverted-dowel ejection mechanism

Abstract

The application provides a reverse buckle exit mechanism, which comprises a sliding seat arranged on a male die plate, a limiting clamp arranged in the sliding seat, a driving device connected with the sliding seat, a first sliding block body connected with the driving end of the driving device, the other end of the first sliding block body connected with a pull rod and capable of sliding in a second sliding block body, the second sliding block body slidingly arranged in the sliding seat, a limiting groove arranged on the bottom surface of the second sliding block body and capable of limiting the second sliding block body by clamping with the limiting clamp, a limiting plate arranged on the second sliding block body, a first insert having one end connected with the pull rod, the first insert being provided with a first limiting boss, a second limiting boss and an inclined surface, a second insert having an inclined surface matched with the inclined surface of the first insert and capable of sliding along the inclined surface of the first insert, the second insert being provided with a reverse buckle forming groove, the second insert being clamped and fixed with a positioning pin arranged in a third insert, and the third insert being connected with the second sliding block body. The application can form a product having a reverse buckle in the direction of the reverse buckle exit mechanism, and improves the yield of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to injection mold technical field, especially a kind of reverse buckle exit mechanism. BACKGROUND

[0002] Injection product due to its appearance or function needs, there are usually many reverse buckles, the reverse buckle of injection product can generally adopt slider forming, but sometimes the product with complex structure has reverse buckle in the direction of slider exit, so that the simple slider structure cannot meet the forming of this kind of reverse buckle, or cannot exit after forming reverse buckle, cannot meet product demand.

[0003] Therefore, the present application provides a kind of reverse buckle exit mechanism to solve the above problems. SUMMARY

[0004] To solve the problem that when forming the product with complex structure, if the product has reverse buckle in the direction of slider structure exit when forming product reverse buckle using existing slider structure, it cannot form the reverse buckle or the slider structure cannot exit, the present application provides a kind of reverse buckle exit mechanism to solve the above problems.

[0005] The technical problem of the present application is solved by the following solution: a kind of reverse buckle exit mechanism, is arranged in injection mold, the reverse buckle exit mechanism includes:

[0006] Slide seat, the slide seat is arranged on public template, the slide seat is equipped with bottom plate, the bottom plate is equipped with limit clamp, one end of the slide seat is connected with a driving device, the driving end of the driving device is arranged in the slide seat, and can be telescopic movement in the slide seat, the driving end is connected with one end of first slider body;

[0007] First slider body, the other end of the first slider body is connected with one end of pull rod, the driving end of the driving device can drive the first slider body, pull rod and slide in second slider body;

[0008] Second slider body, the second slider body is Z-shaped, the second slider body slides in the slide seat, the bottom surface of the second slider body in sliding contact with the slide seat bottom plate is equipped with limit slot, when mold is closed, the limit slot can be clamped with the limit clamp to limit the second slider body, the second slider body is equipped with limit plate, for limiting the sliding stroke of the first slider body, the two sides of the second slider body close to the slide seat bottom plate are also equipped with boss, the boss is pressed by pressing block, the boss can slide between the pressing block and the slide seat bottom plate, enhance the stability when the second slider body slides, the pressing block is fixed on the slide seat;

[0009] A first insert, one end of the first insert is connected with the other end of the pull rod, two ends of the first insert are respectively provided with a first limiting boss and a second limiting boss, and the first insert further has an inclined surface;

[0010] A second insert, the second insert has an inclined surface matched with the inclined surface of the first insert, the second insert can slide along the inclined surface of the first insert, the other surface of the inclined surface of the second insert is provided with a reverse buckle forming groove for forming a reverse buckle of a product in the reverse buckle exit mechanism exit direction, the second insert is further provided with a clamping groove, the clamping groove is used for clamping and fixing with a positioning pin, the positioning pin is fixedly arranged in the third insert, and the first and second inserts can slide relative to the third insert in the third insert.

[0011] A third insert, the third insert is connected with a second slider body, and the positioning pin is arranged in the third insert near one end of the second slider body, the positioning pin can abut against the first limiting boss and the second limiting boss of the first insert respectively in the sliding process of the first insert, so that the sliding stroke of the first insert is limited, and the first, second and third inserts and the male and female mold cores jointly form a product.

[0012] Preferably, the limiting clamp is a positioning bead limiting clamp.

[0013] Preferably, the driving device is an oil cylinder.

[0014] Preferably, the second slider body includes a first part and a second part, the pull rod is arranged in the first part and slides in the slide seat, the limiting clamping groove is arranged on the bottom surface of the second part, the second part is further provided with a sliding channel, the first slider body is driven by the driving device to slide in the sliding channel, and the limiting plate is arranged in the sliding channel and can stabilize the driving end when the driving end moves, so that the driving end is prevented from shaking too much in the movement process.

[0015] Preferably, the first insert is provided with a T-shaped sliding groove on the inclined surface, the second insert is provided with a T-shaped sliding block on the inclined surface, and the first insert and the second insert are slidably connected through the T-shaped sliding block and the T-shaped sliding block.

[0016] The present application has the beneficial effect that a product with complex structure and reverse buckle in the reverse buckle exit mechanism direction can be formed, and the product yield is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of a product to be formed in the embodiment of the present application.

[0018] Figure 2It is the product schematic diagram of the invention inverted buckle exit mechanism and embodiment.

[0019] Figure 3 It is the inverted buckle exit mechanism schematic diagram of the invention.

[0020] Figure 4 It is the inverted buckle exit mechanism (omitted third insert) in the mold closing state schematic diagram.

[0021] Figure 5 It is the inverted buckle exit mechanism (omitted third insert) in the mold opening first stage state schematic diagram.

[0022] Figure 6 It is the inverted buckle exit mechanism (omitted third insert, second slider body) in the mold closing state schematic diagram.

[0023] Figure 7 It is the inverted buckle exit mechanism (omitted third insert, second slider body) in the mold closing state another angle schematic diagram.

CONCRETE IMPLEMENTATION

[0024] In order to further illustrate the technical means adopted by the present application and its effects, the following will be described in detail in combination with the embodiments of the present application and its accompanying drawings.

[0025] The present application provides an inverted buckle exit mechanism, which is arranged in an injection mold, and the inverted buckle exit mechanism comprises:

[0026] A sliding seat 1 is arranged on a male mold plate (not shown in the figure), a bottom plate 10 is arranged in the sliding seat 1, a limiting clamp 100 is arranged on the bottom plate 10, one end of the sliding seat 1 is connected with a driving device 11, a driving end 110 of the driving device 11 is arranged in the sliding seat 1 and can extend and retract in the sliding seat 1, and the driving end 110 is connected with one end of a first slider body 2.

[0027] The first slider body 2 is connected with one end of a pull rod 20 in an up-down mode, and the driving end 110 of the driving device 11 can drive the first slider body 2 and the pull rod 20 to slide in a second slider body 3.

[0028] Second slider body 3, the second slider body 3 is Z-shaped as a whole, including first part 30 and second part 31, wherein, the second part 31 is slid in the slide 1, and the bottom surface in sliding contact with the slide base plate 10 is provided with a limit card slot (not shown in the figure), when the mold is combined, the limit card slot (not shown in the figure) can be clamped with the limit clamp 100 to limit the second slider body 3, the pull rod 20 is slid through the first part 30, the second part 31 is further provided with a slide 310, the first slider body 2 is driven by the driving device 11 to slide in the slide 310, the slide 310 is provided with a limit plate 311 for limiting the sliding stroke of the first slider body 2, and the driving end 110 can be stabilized when the driving end 110 moves, so as to avoid that the driving end 110 shakes too much during the movement, the second slider body 3 is further provided with a boss 312 on both sides close to the slide base plate 10, the boss 312 is held by the pressing block 12, and the boss 312 slides between the pressing block 12 and the slide base plate 10 during the sliding process of the second slider body 3, so as to improve the stability of the second slider body 3 during sliding, and the pressing block 12 is fixed on the slide 1;

[0029] First insert 4, one end of the first insert 4 is connected with the other end of the pull rod 20, and the two ends of the first insert 4 are respectively provided with a first limit boss 41 and a second limit boss 42, the first insert 4 further has an inclined surface, and a T-shaped slide groove 43 is arranged on the inclined surface, and the first insert 4 is slidably connected with the T-shaped slide groove 43 and a T-shaped slide block 50 of a second insert 5;

[0030] Second insert 5, one side of the second insert 5 is provided with a T-shaped slide block 50, which is an inclined surface matched with the inclined surface of the first insert 4, and the second insert 5 can slide along the inclined surface of the first insert 4 during mold opening and closing, the other side of the second insert 5 opposite to the inclined surface is provided with a reverse buckle forming groove 51 for forming a reverse buckle of a product in the reverse buckle exit direction of the reverse buckle exit mechanism, and the second insert 5 is further provided with a clamping groove 52, the clamping groove 52 is used for clamping and fixing with a positioning pin 60, and the positioning pin 60 is fixedly arranged in a third insert 6, and the first insert 4 and the second insert 5 can slide relative to the third insert 6 in the third insert 6;

[0031] The third insert 6 is connected to the first part 30 of the second slider body 3 and is used to participate in product molding. The positioning pin 60 is disposed inside the third insert 6 near the end of the second slider body 30. The positioning pin 60 can abut against the first limiting boss 41 and the second limiting boss 42 respectively during the sliding process of the first insert 4, thereby limiting the sliding stroke of the first insert 4. The first insert 4, the second insert 5, the third insert 6 and the male and female mold cores (not shown in the figure) jointly form the product.

[0032] The limiting clamp 100 is a positioning bead limiting clamp. When the driving device 11 continuously drives its driving end 110, the limiting slot (not shown in the figure) of the second slider body 3 can be disengaged from the limiting clamp 100.

[0033] The driving device 11 is a hydraulic cylinder.

[0034] The working process of the present invention is described below with reference to an embodiment of the present invention: In this embodiment, the product 7 formed by the inverted withdrawal mechanism is as follows: Figure 1 As shown, the product 7 has a first undercut 70 and a second undercut 71. The first undercut 70 is formed by one end of the first insert 4, the second insert 5, and the third insert 6. The second undercut 71 is formed by the undercut forming groove 51 on the second insert 5 in the exit direction of the first insert 4, the second insert 5, and the third insert 6. When the mold closes and injection molding begins, the undercut exit mechanism... Figure 3 In the state shown, the first insert 4 and the second insert 5 are both covered within the third insert 6, and the limiting slot (not shown in the figure) of the second slider body 3 is engaged with the limiting clamp 100 on the slide base plate 10.

[0035] First stage of mold opening after injection molding: Figure 5 The diagram illustrates the state of the undercut release mechanism (the third insert is omitted) in the first stage of mold opening. At this time, the drive device 11 drives the drive end 110 to move the first slider body 2, the pull rod 20 and the first insert 4 away from the product 7. Since the second slider body 3 is limited by the limiting clamp 100 on the slide base plate 10, the second slider body 3 and the third insert 6 fixed on the second slider body 3 remain stationary. At the same time, the second insert 5, which is locked by the positioning pin 60 inside the third insert 6, cannot move backward away from the product 7. The second insert 5 will move along the inclined surface of the first insert 4 in the upward direction relative to the second undercut 71, thereby retracting from the second undercut 71.

[0036] Second stage of opening mold: when the first slider body 2 retreats to the position of the limiting plate 311 on the second slider body 3, at this time the driving device 11 continues to drive the driving end 110 to move in the direction of the product 7, the first slider body 2 connected with the driving end 110 is clamped at the limiting plate 311 and drives the second slider body 3 to move so as to be separated from the limiting of the limiting clamp 100, at the same time, the second slider body 3 drives the third insert 6 and the second insert 5 to retreat from the first reverse buckle 70 of the product, and the withdrawal of the reverse buckle of the product is completed.

[0037] The beneficial effect of the present application is that the product with complex structure and reverse buckle in the direction of the reverse buckle withdrawal mechanism can be formed, and the yield of the product is improved.

[0038] It should be pointed out that the present application is not limited to the above-mentioned embodiments, any simple modification, equivalent change and modification of the above-mentioned embodiments based on the technical scheme of the present application by any person skilled in the art falls within the protection scope of the present application.

Claims

1. An undercut ejection mechanism provided in an injection mold, characterized by, The utility model relates to a mould driving device, which comprises the following parts: a slide is arranged on a male die plate, a bottom plate is arranged in the slide, a limiting clamp is arranged on the bottom plate, one end of the slide is connected with a driving device, the driving end of the driving device is arranged in the slide and can extend and retract in the slide, the driving end is connected with one end of a first sliding block body; the first sliding block body is connected with one end of a pull rod at the other end, the driving end can drive the first sliding block body and the pull rod to slide in a second sliding block body; the second sliding block body is in Z shape, the bottom surface in sliding contact with the slide bottom plate is provided with a limiting clamping groove, the limiting clamping groove is clamped with the limiting clamp to limit the second sliding block body when the mould is closed, a limiting plate is arranged on the second sliding block body to limit the sliding stroke of the first sliding block body, two bosses are arranged on the two sides of the second sliding block body close to the slide bottom plate, the bosses are pressed by a pressing block, and the pressing block is fixed on the slide; one end of a first insert is connected with the other end of the pull rod, first and second limiting bosses are arranged at the two ends of the first insert respectively, and the first insert has an inclined surface; the second insert has an inclined surface matched with the inclined surface of the first insert, the second insert can slide along the inclined surface of the first insert, a reverse-docking forming groove is arranged on the other surface of the inclined surface of the second insert, a clamping groove is arranged on the second insert, the clamping groove is used for clamping and fixing a positioning pin, the positioning pin is arranged in a third insert, and the first and second inserts can slide relative to the third insert in the third insert; the third insert is connected with the second sliding block body, the positioning pin is arranged in the third insert close to one end of the second sliding block body, and the positioning pin can abut against the first and second limiting bosses of the first insert respectively during the sliding process of the first insert to limit the sliding stroke of the first insert, and the first, second and third inserts are used for jointly forming a product together with a male die core and a female die core; in the first stage of mould opening, the driving device drives the driving end to drive the first sliding block body, the pull rod and the first insert to retreat away from the product, the second sliding block body is limited by the limiting clamp on the slide bottom plate, the second sliding block body and the third insert fixed on the second sliding block body remain stationary, and the second insert clamped and fixed by the positioning pin in the third insert also cannot retreat away from the product; in the second stage of mould opening, when the first sliding block body retreats to the position of the limiting plate on the second sliding block body, the driving device continues to drive the driving end to move away from the product, the first sliding block body connected with the driving end is clamped at the limiting plate and drives the second sliding block body to move away from the limiting clamp.

2. A reverse-out mechanism as claimed in claim 1, wherein: The limiting clamp is a positioning bead limiting clamp.

3. A reverse-out mechanism as claimed in claim 1, wherein: The driving device is an oil cylinder.

4. A reverse-out mechanism as claimed in claim 1, wherein: The second slider body comprises a first part and a second part, wherein the pull rod is slidably arranged in the first part, the second part is used for sliding in the sliding seat, the limiting slot is arranged on the bottom surface of the second part, a slide is further arranged on the second part, the first slider body is driven by the driving device to slide in the slide, and the limiting plate is arranged in the slide.

5. A reverse-out mechanism as claimed in claim 1, wherein: A T-shaped sliding groove is arranged on the inclined surface of the first insert, a T-shaped sliding block is arranged on the inclined surface of the second insert, and the first insert and the second insert are slidably connected through the T-shaped sliding block and the T-shaped sliding groove.

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