Demoulding structure of slide in mould

Abstract

The utility model provides a demoulding structure of a slide in a mould, which comprises a bottom plate, a rear mould core and a push plate, an accommodating cavity is arranged in the push plate, a shovel base fixedly connected onto the bottom plate is arranged in the accommodating cavity, an injection molding product comprising a plurality of inverted buckles and an inner slide are arranged on the rear mould core, one end of the inner slide is a core extending into the inverted buckles, and the other end of the inner slide is a core extending into the inverted buckles. The containing cavity extends upwards in the inclined direction, and the inner slide is provided with an inclined face corresponding to the inner wall of the containing cavity. When the bottom plate is separated from the push plate up and down, the inner slide translates under the inclined guide action of the inner wall of the accommodating cavity and the inclined surface, so that the mold core is drawn out from the inverted buckle in an inclined manner; through horizontal linkage of the inner slide and the shovel base and vertical driving of the push plate, the mold core is separated from the inverted buckling structure along an inclined path, the demolding resistance is greatly reduced, and product damage is effectively avoided; oblique pulling and ejection actions are automatically completed through mechanical linkage, complex external driving is not needed, the demolding efficiency is improved, and the equipment complexity and the maintenance cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold demolding field, concretely relates to a demolding structure of in-line position in mold. BACKGROUND

[0002] The traditional mold demolding mechanism adopts the design of upper and lower mold split combined with one-way ejection, which is suitable for simple structure injection products, however, for the products with irregular shape, multi-directional undercut or fine protrusion, such mold has significant limitations, first, the single direction ejection force is difficult to overcome the adhesion between the undercut structure and the mold core, which is easy to cause demolding difficulty or even product fracture, second, the vertical demolding path of complex undercut will interfere with the mold structure, which needs to be separated by forced ejection, which is easy to damage the product surface or internal structure, reduce the yield, in addition, there is lack of collaborative demolding scheme for multi-undercut distribution in the prior art, which is difficult to adapt to the stress demand of special-shaped products, and is easy to cause local deformation, these problems seriously restrict the production efficiency and quality stability of high complexity injection products, therefore, an urgent need arises for a mold design scheme which can realize multi-directional linkage demolding, reduce the adhesion of undercut and adapt to complex structure. SUMMARY

[0003] (1) Technical problem to be solved

[0004] The utility model provides a demolding structure of in-line position in mold, aims at solving above -mentioned problem.

[0005] (2) Technical scheme

[0006] The utility model provides a demolding structure of in-line position in mold, including bottom plate and rear mold core, be equipped with push board between bottom plate and rear mold core, be equipped with the accommodating cavity that respectively intercommunication bottom plate and rear mold core in push board, be equipped with the shovel base of fixed connection in accommodating cavity bottom plate, be equipped with injection product and in-line position on rear mold core, injection product includes ejection part and undercuts, the ejection part bottom is equipped with ejection mechanism, and the undercut includes a plurality of undercuts, and one end of in-line position is the core that extends to the undercut, and the other end is with the sliding connection of shovel base, accommodating cavity is along obliquely upwards and is arranged, and in-line position is equipped with the inclined surface corresponding with the inner wall of accommodating cavity;

[0007] When bottom plate and push board are separated up and down, in-line position is translated under the inclined type guiding effect of the inner wall of accommodating cavity and the inclined surface, makes the core from the undercut is inclined and extracted.

[0008] Further, the shovel base is equipped with a sliding groove, and the in-line position is equipped with a convex edge that is engaged with the sliding groove.

[0009] Further, the sliding groove extends along the horizontal direction.

[0010] Further, the number of the inner row positions is 3, which are a first inner row position and a second inner row position and a third inner row position symmetrically arranged on both sides of the first inner row position, and each of the inner row positions is provided with at least one core.

[0011] Further, the number of the shovel bases is 3 and corresponds to the number of the inner row positions.

[0012] Further, the number of the shovel bases is 1 and is provided with 3 connecting positions, and the connecting positions are provided with sliding grooves corresponding to the inner row positions.

[0013] Further, the number of the undercut of the injection molding product is 5.

[0014] Further, the first inner row position is provided with 3 cores corresponding to the undercut, and the second inner row position and the third inner row position are each provided with 1 core corresponding to the undercut.

[0015] Further, the ejection mechanism comprises a plurality of ejector pins and an ejector pin plate, one end of the ejector pin is connected to the ejector pin plate, and the other end extends through the bottom plate and the rear mold core to the injection molding product.

[0016] Further, the ejector pin comprises a nozzle ejector pin, a first ejector pin and a second ejector pin.

[0017] Further, the diameter of the second ejector pin is smaller than the diameter of the first ejector pin.

[0018] Further, the ejection part comprises a buckle and a support part, the second ejector pin corresponds to the buckle and abuts, and the first ejector pin corresponds to the support part and abuts.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] The inclined extraction die reduces the adhesion: through the horizontal linkage of the inner row position and the shovel base and the vertical drive of the push plate, the core is separated from the undercut structure along the inclined path, the demolding resistance is greatly reduced, and the product damage is effectively avoided; the multi-directional collaborative ejection adapts to the complex structure: the ejector pin group adopts differential design, and through the optimization of the diameter and the layout, uniform and directional ejection force is provided for special-shaped products, so that the stress balance in the demolding process is ensured, and local deformation is prevented; the modularity adaptation improves the universality: the number of the inner row positions and the distribution of the cores can be flexibly adjusted, different numbers and space arrangements of the undercut can be adapted, and the application range of the mold is significantly expanded; efficient integration simplifies the operation: the inclined extraction and the ejection action are automatically completed through mechanical linkage, without complex external drive, which improves the demolding efficiency, reduces the equipment complexity and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1Structure diagram of the utility model Figure 1 .

[0022] Figure 2 Structure diagram of the utility model Figure 2 .

[0023] Figure 3 Sectional view of the utility model Figure 1 .

[0024] Figure 4 Moving state diagram of the utility model.

[0025] Figure 5 Parts explosion diagram of the utility model.

[0026] Figure 6 Structure diagram of the utility model Figure 3 .

[0027] Figure 7 Structure diagram of the utility model Figure 4 .

[0028] Figure 8 Structure diagram of the utility model Figure 5 .

[0029] Figure 9 Structure diagram of the utility model Figure 6 .

[0030] Figure 10 Structure diagram of the utility model Figure 7 .

[0031] Figure 11 Structure diagram of the utility model Figure 8 .

[0032] Figure 12 Structure diagram of the utility model Figure 9 .

[0033] Reference signs: 1 - bottom plate, 2 - push plate, 21 - containing cavity, 22 - shovel base, 221 connecting position, 3 - rear die core, 4 - injection molding product, 41 - counterbore, 42 - ejection part, 43 - counterbore part, 5 - inner row position, 51 - first inner row position, 52 - second inner row position, 53 - third inner row position, 54 - core print, 55 - inclined surface, 56 - sliding groove, 57 - convex edge, 6 - ejector pin, 61 - first ejector pin, 62 - second ejector pin, 63 - nozzle ejector pin, 64 - buckle, 65 - support part, 7 - ejection mechanism, 8 - ejector pin plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0035] As Figures 1-4 shown, the utility model provides a demoulding structure of mould inner row position, including bottom plate 1 and back mould kernel 3, be equipped with push plate 2 between bottom plate 1 and back mould kernel 3, three mutual abutment and all be rectangular structure, be equipped with the containing cavity 21 of upper and lower intercommunication bottom plate 1 and back mould kernel 3 in push plate 2, be equipped with the shovel base 22 of fixed connection on containing cavity 21 in bottom plate 1, shovel base 22 also be rectangular structure, be equipped with injection moulded product 4 on back mould kernel 3, injection moulded product 4 includes ejection part 42 and reverse buckle part 43, ejection part 42 bottom is equipped with ejection mechanism 7, reverse buckle part 43 includes several reverse buckles 41, injection moulded product is the claw of electric wind comb, shape is very irregular, back mould kernel 3 inside is equipped with several inner row positions 5 that can be inclined sliding, inner row position 5 is a part of back mould kernel 3, one end of inner row position 5 is the core 54 that extends to reverse buckle 41 and corresponds therewith, and the other end is inclined to extend to containing cavity 21 and is slidably connected with shovel base 22, wherein, the two sides of inner row position 5 are equipped with the inclined plane 55 corresponding with the inner wall of containing cavity 21 and abut with it, inner row position 5 is fixedly connected with shovel base 22 in vertical direction, and can be relatively moved in horizontal direction, push plate 2 and back mould kernel 3 can be relatively moved in vertical direction on bottom plate 1, when bottom plate 1 separates from push plate 2, inner row position 5 is guided under the inclination of containing cavity 21 inner wall and inclined plane 55 and translates, makes core 51 from reverse buckle 41 be inclined and extracted, in addition, the space of containing cavity 21 is set as the superimposed combination of vertical groove and inclined groove, can just supply shovel base 22 moves up and down and inner row position 5 inclination moves, no extra space.

[0036] The structure design makes the push plate 2 and the back core 3 relative to the shovel base 22 and the inner row 5, in the containing cavity 21, the push plate 2 moves up and down in the process by the slope 55 to the inner row 5 a horizontal direction of the push force, so that the inner row 5 and the shovel base 22 in the horizontal direction relative movement, at the same time, the other end of the inner row 5, the core 54 and the reverse buckle 41 of the injection product 4 in horizontal direction and vertical direction relative movement, so that the inner row 51 in the injection product 4 oblique extraction, the core 54 and the reverse buckle 41 are separated, at this time the reverse buckle 41 part of the injection product 4 on the back core 3 becomes very small, and then through the subsequent structure ejection realizes very good demolding effect, it is worth noting that the push plate 2 and the shovel base 22 relative movement is not clear which party is fixed, so, in another embodiment, the push plate 2 and the back core 3 are fixed, the shovel base 22 drives the inner row 5 to move downwardly, in another embodiment, the bottom plate 1 and the shovel base 22 are fixed, the push plate 2 moves upwardly, all can achieve the effect of the present scheme.

[0037] In the mold structure, there are some irregular product shape, even in the direction of the hole, convex, reverse buckle structure, and most of the market mold structure is not designed for these structures to design a special ejection mechanism, still is the universal up and down split, single direction ejection demolding, which will be irregular product structure to a certain damage, affect the yield of the product, in order to solve the above problems, the mold inner row of the present application is designed, the shovel base 22 and the push plate 2 drive the inner row 5 to be extracted and separated from the reverse buckle 41 of the injection product 4, greatly reduce the adhesion between the reverse buckle 41 and the back core 3, and then cooperate with the subsequent ejection mechanism to realize very good demolding effect.

[0038] Specifically, as Figures 5-6As shown in the utility model of an example, in the connecting place of the inner row position 5 and the shovel base 22, both are equipped with two sliding grooves 56 and two convex edges 57, the sliding groove 56 is on the upper in the inner row position 5, the convex edge 57 is on the lower, the convex edge 57 is on the upper in the shovel base 22, the sliding groove 56 is on the lower, and the sliding groove 56 and the convex edge 57 are engaged with each other, wherein the extension direction of the sliding groove 56 and the convex edge 57, that is, the relative sliding direction of both is parallel to the horizontal direction, the above-mentioned mechanism design makes the inner row position 5 and the shovel base 22 form clamping in the vertical direction through the sliding groove 56 and the convex edge 57, and can only move relatively in the horizontal direction, in another embodiment, the inner row position 5 and the shovel base 22 are only equipped with one sliding groove 56 and one convex edge 57, and the same effect as above-mentioned is realized, in another embodiment, the convex edge 57 is on the upper in the inner row position 5, the sliding groove 56 is on the lower, the sliding groove 56 is on the upper in the shovel base 22, and the convex edge 57 is on the lower, and the same effect as above-mentioned can be realized, in another embodiment, the relative sliding direction of the sliding groove 56 and the convex edge 57 is the vertical direction, and the clamping direction is the horizontal direction, and the same effect as above-mentioned can be realized.

[0039] Specifically, as Figure 7 As shown in the utility model of an example, the number of the inner row position 5 is three, which are the first inner row position 51 and the second inner row position 52 and the third inner row position 53 symmetrically arranged on the two sides of the first inner row position 51, and each inner row position 5 is equipped with at least one core 54, wherein the first inner row position 51 is arranged in front of the second inner row position 52 and the third inner row position 53, and the reason for this design is that the reverse buckle 41 of the injection molding product 4 is arranged in an arc shape, in order to correspond to such distribution, the number of the inner row position 5 is three and arranged in front and back, so that the core 54 on the inner row position 5 corresponds to the reverse buckle 41, in another embodiment, the number of the inner row position 51 is not limited to three, but also can be one or more, and can be arranged in the same row, and the same effect as above-mentioned can be realized.

[0040] Further, the number of the shovel base 22 is three and corresponds to the three inner row positions 5, in another embodiment, the number of the shovel base 22 is one and is equipped with three connecting positions 221, the connecting position 221 is equipped with a sliding groove 56 corresponding to the inner row position 5, and the same effect as above-mentioned can be realized.

[0041] Specifically, as Figure 8As shown in the utility model, in an example of the utility model, the number of the undercut 41 of the injection molding product 4 is five, the first inner row 51 is provided with three core prints 54 corresponding to the undercut 41, the second inner row 52 and the third inner row 53 are each provided with one core print 54 corresponding to the undercut 41, the three core prints 54 of the first inner row 51 correspond to the three middle undercuts 41 of the injection molding product 4, and the core print 54 of the second inner row 52 and the core print 54 of the third inner row 53 correspond to the outermost undercuts 41 of the injection molding product 4. In other embodiments, the number of the core print 54 of the first inner row 51, the second inner row 52 and the third inner row 53 is not limited to three or one, and the arrangement of the core print 54 corresponding to the undercut 41 is not limited to one-three-one arrangement. For example, the first inner row 51 is provided with three core prints 54 corresponding to the undercut 41, the second inner row 52 and the third inner row 53 are each provided with one core print 54 corresponding to the undercut 41, and they can be adjusted at will according to actual conditions, and the above-mentioned effects can be achieved.

[0042] Specifically, as Figures 9-12 As shown in the utility model, in an example of the utility model, the ejection mechanism 7 includes a plurality of ejector pins 6 and an ejector pin plate 8, one end of the ejector pin 6 is connected to the ejector pin plate 8, the other end extends through the bottom plate 1 and the rear mold core 3 to the injection molding product 4, the ejector pin plate 8 pushes the ejector pin 6 upwards to eject the injection molding product 4 upwards, the number of the plurality of ejector pins 6 is five, including one nozzle ejector pin 63, two symmetrically arranged first ejector pins 61 and two symmetrically arranged second ejector pins 62, and the structure design of the ejector pin 6 enables the mold to greatly reduce the adhesion between the undercut 41 of the injection molding product 4 and the rear mold core 3 after the inclined extraction of the inner row 5, and then the ejector pin 6 performs upward and downward ejection, realizes the demolding of the injection molding product 4, and the design of the plurality of ejector pins 6 can provide uniform thrust to the injection molding product 4 in each direction, thereby reducing deformation, damage and other problems caused by uneven local stress, and ensuring the quality and precision of the product. Among them, the nozzle ejector pin 63 functions to eject the nozzle from the flow channel system of the mold after the completion of injection molding, so that the nozzle is separated from the mold core, facilitating subsequent processing of the nozzle. In other embodiments, the number of the ejector pin 6 is not limited to five, and the arrangement and distribution can be adjusted arbitrarily according to actual conditions, and the above-mentioned effects can also be achieved.

[0043] Further, as Figure 11As shown, the injection molding product 4 is provided with a buckle 64 and a supporting part 65, the second ejector pin 62 corresponds to the buckle 64 and abuts, the first ejector pin 61 corresponds to the supporting part 65 and abuts, and the diameter of the second ejector pin 62 is much smaller than that of the first ejector pin 61. The reason for this structural design is that the buckle 64 is a small part with fine structure, and the small diameter of the second ejector pin 62 can accurately act on the buckle 64 to provide concentrated ejection force, ensure the smooth ejection of the buckle 64 from the mold, and avoid structural fracture and damage.

[0044] The working principle of the utility model is described in detail as follows:

[0045] The working principle of the inner row position of the mold is based on the synergistic action of inclined extraction and multi-directional ejection. The bottom plate 1, the push plate 2, and the rear mold core 3 are tightly matched. The core 54 of the inner row position 5 is completely embedded in the inclined undercut 41 of the injection molding product 4. The push plate 2 moves in the vertical direction, and the inclined surface 55 applies a horizontal thrust to the inner row position 5, causing the inner row position 5 and the shovel base 22 to slide relative to each other in the horizontal direction. At the same time, the core 54 of the inner row position 5 gradually exits from the undercut 41 in the inclined direction, realizing the action of inclined extraction. During this process, the contact area between the undercut 41 and the rear mold core 3 gradually decreases, significantly reducing the adhesion force. Subsequently, the ejector pin group 6 synchronously ejects the injection molding product 4 in the vertical direction. The first ejector pin 61 and the second ejector pin 62 apply uniform force to avoid local stress concentration. The nozzle ejector pin 63 separates the runner system. Through the timing cooperation of inclined extraction and ejection, the complex undercut structure can be demolded without damage, while ensuring product precision and surface quality.

[0046] The innovation of the utility model lies in: inclined extraction reduces adhesion force: through the horizontal linkage of the inner row position and the shovel base and the vertical drive of the push plate, the core is separated from the undercut structure along an inclined path, significantly reducing the demolding resistance and effectively preventing product damage; multi-directional collaborative ejection adapts to complex structures: the ejector pin group is designed differently, providing uniform and directional ejection force for special-shaped products through diameter and layout optimization, ensuring force balance during the demolding process and preventing local deformation; modular adaptation improves universality: the number of inner row positions and the distribution of cores can be flexibly adjusted to adapt to different numbers and spatial arrangements of undercuts, significantly expanding the application range of the mold; efficient integration simplifies operation: inclined extraction and ejection actions are automatically completed through mechanical linkage without complex external drive, which improves demolding efficiency, reduces equipment complexity, and lowers maintenance costs.

[0047] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0048] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A demolding structure of a row of pins in a mold, characterized by comprising: The utility model provides a mould, including bottom plate (1) and back mould kernel (3), be equipped with push board (2) between bottom plate (1) and back mould kernel (3), be equipped with containing cavity (21) of respectively intercommunication bottom plate (1) and back mould kernel (3) in push board (2), be equipped with fixedly connected shovel base (22) on containing cavity (21) in bottom plate (1), be equipped with injection product (4) and inner row (5) on back mould kernel (3), injection product (4) includes ejection part (42) and reverse buckle part (43), ejection part (42) bottom is equipped with ejection mechanism (7), reverse buckle part (43) includes a plurality of reverse buckle (41), and the one end of inner row (5) is the core (54) extending to the reverse buckle (41) inside, and the other end is with shovel base (22) sliding connection, containing cavity (21) is along oblique upwards and is extended to set, and inner row (5) is equipped with the inclined plane (55) of corresponding containing cavity (21) inner wall, When bottom plate (1) and push board (2) are separated upwards and downwards, the inner row (5) is translated under the inclined type guiding of containing cavity (21) inner wall and inclined plane (55), and the core (54) is extracted from the reverse buckle (41) in inclined type.

2. The stripper structure of an in-mold row according to claim 1, wherein Shovel base (22) is equipped with sliding groove (56), and inner row (5) is equipped with convex edge (57) with sliding groove (56) intermeshing.

3. The stripper structure for an in-mold row according to claim 2, wherein Sliding groove (56) extends along the horizontal direction.

4. The stripper structure for in-mold rows of parts of claim 1 wherein, The number of inner row (5) is 3, and it is first inner row (51) and second inner row (52) and third inner row (53) symmetrically arranged on the both sides of first inner row (51), and each inner row (5) is equipped with at least one core (54).

5. The stripper structure for in-mold row units according to claim 4, wherein The number of shovel base (22) is 3 and corresponds to 3 inner row (5).

6. The stripper structure for in-mold rows of parts of claim 4 wherein, The number of shovel base (22) is 1 and is equipped with 3 connecting positions (221), and sliding groove (56) is arranged on the connecting position (221) and corresponds to inner row (5).

7. The stripper structure for in-mold rows of parts of claim 4 wherein, The number of reverse buckle (41) of injection product (4) is 5.

8. The stripper structure for in-mold rows of parts according to claim 7, wherein, First inner row (51) is equipped with 3 cores (54) corresponding to reverse buckle (41), and second inner row (52) and third inner row (53) are each equipped with 1 core (54) corresponding to reverse buckle (41).

9. The stripper structure for in-mold rows of parts of claim 1 wherein, Ejection mechanism (7) includes a plurality of ejector pins (6) and ejector pin plate (8), one end of ejector pin (6) is connected to ejector pin plate (8), and the other end extends to injection product (4) through bottom plate (1) and back mould kernel (3).

10. The stripper structure for an in-mold row according to claim 9, wherein Ejector pin (6) includes nozzle ejector pin (63), first ejector pin (61) and second ejector pin (62).

11. The stripper structure for in-mold rows of parts according to claim 10, wherein, The diameter of second ejector pin (62) is less than the diameter of first ejector pin (61).

12. The stripper structure for in-mold rows of parts of claim 11 wherein, Ejection part includes buckle (64) and support part (65), second ejector pin (62) corresponds to the abutment of buckle (64), and first ejector pin (61) corresponds to the abutment of support part (65).

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