Lateral back-off linkage demolding mechanism

Abstract

The utility model relates to the technical field of injection molds, and provides a lateral back-off linkage demolding mechanism which comprises a movable mold and a fixed mold, a movable block is arranged on the movable mold; the movable block is configured to move on the movable mold in a reciprocating manner along the demolding direction of the lateral inverted buckle; a driving groove is formed in the movable block, a driving rod is fixedly arranged on the fixed mold, and the driving rod is connected with a driving block matched with the driving groove. Therefore, through the arrangement of the movable block, in the initial stage of mold opening, the fixed mold is utilized to generate driving force, so that the movable block is separated from the lateral reverse buckling structure, and a guarantee is provided for smooth demolding of a product. The demoulding device is simple in structure and accurate in action, and solves the problem of demoulding of an inverted buckling structure with a large included angle with a parting surface in a mode of linkage of the loose piece and mould opening action.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and in particular relates to a side-clamping linkage demolding mechanism. Background Technology

[0002] Complex injection molded products are usually demolded using a slanted ejector.

[0003] like Figure 1 The product 100 shown has a side undercut 101 structure, and the angle between the side undercut 101 and the parting surface of the product 100 is nearly perpendicular, that is, the demolding direction of the undercut is almost perpendicular to the mold opening direction.

[0004] Because the angle between the demolding direction and the mold opening direction of the side undercut 101 is too large, it is impossible to demold using the angled ejector method, which brings great difficulties to the molding of product 100.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] To address the aforementioned shortcomings, this utility model primarily provides a lateral undercut linkage demolding mechanism, which solves the technical problem of demolding undercut structures with excessively large angles to the parting surface.

[0007] To solve the above problems, this utility model provides a lateral undercut linkage demolding mechanism, including a moving mold and a fixed mold; the moving mold is provided with a movable block; the movable block is configured to reciprocate on the moving mold along the demolding direction of the lateral undercut;

[0008] The movable block is provided with a drive groove, and the fixed mold is fixed with a drive rod, which is connected to a drive block that cooperates with the drive groove.

[0009] According to the lateral snap-lock linkage demolding mechanism of this utility model, the driving block is a cylindrical structure and is rotatably sleeved on the driving rod.

[0010] According to the lateral snap-lock linkage demolding mechanism of this utility model, a slide rail is fixed on the moving mold, and a slide groove is provided on the movable block to engage with the slide rail.

[0011] According to the lateral snap-lock linkage demolding mechanism of this utility model, the cross-sectional shape of the slide rail is T-shaped.

[0012] According to the lateral inverted linkage demolding mechanism of this utility model, there are two slide rails.

[0013] According to the lateral undercut linkage demolding mechanism of this utility model, the driving groove consists of two slots.

[0014] The utility model discloses a side lateral reverse buckle linkage demoulding mechanism, still fixedly arranged below the movable block of the movable mould is the limiting post, the top of limiting post is equipped with the telescopic limiting block, the bottom of movable block is equipped with the limiting slot of the shape and limiting block adaptation correspondingly.

[0015] The utility model discloses a side lateral reverse buckle linkage demoulding mechanism, the accommodating groove is seted up in the limiting post, and the limiting block is located in the accommodating groove, and the bottom surface between accommodating groove and limiting block still is equipped with the reset spring.

[0016] The utility model discloses a side lateral reverse buckle linkage demoulding mechanism, the limiting post corresponds two groups of limiting slots, and two groups of limiting slots correspond two state positions of movable block respectively.

[0017] The utility model discloses a side lateral reverse buckle linkage demoulding mechanism, be equipped with the inclined top piece on the movable mould, and the movable block is slidably arranged on the inclined top piece.

[0018] Summarizing, the utility model discloses a movable block, in the initial stage of mould opening, utilizes the driving force of fixed mould to make movable block and side lateral reverse buckle structure separate, provides the guarantee for the smooth demoulding of product. Simple structure, accurate action, through movable block and mould opening action linkage mode, solve the demoulding of reverse buckle structure with big included angle of parting surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the partial structure schematic diagram of the product of the utility model,

[0020] Figure 2 It is the structure schematic diagram of the demoulding mechanism of the utility model,

[0021] Figure 3 It is Figure 2 The structure schematic diagram of the partial area of movable mould,

[0022] Figure 4 It is Figure 3 The structure schematic diagram of the movable block is removed,

[0023] Figure 5 It is Figure 3 The structure schematic diagram of movable block back,

[0024] Figure 6 It is Figure 4 The cross section structure schematic diagram of limiting post,

[0025] In the drawing: 1 - movable mould, 11 - fixed mould, 2 - movable block, 21 - drive groove, 22 - drive rod, 23 - drive block, 24 - sliding slot, 25 - limiting slot, 3 - inclined top piece, 4 - slide rail, 5 - limiting post, 51 - limiting block, 511 - guide surface, 52 - reset spring, 100 - product, 101 - side lateral reverse buckle. DETAILED DESCRIPTION

[0026] Referring to Figure 2 The utility model provides a kind of side lateral undercut linkage stripping mechanism, including movable mould 1 and fixed mould 11;Referring to Figure 3 Movable mould 1 is provided with movable block 2;Movable block 2 is configured as: it can reciprocate on movable mould 1, along the stripping direction of the side lateral undercut;

[0027] Driving groove 21 is equipped on the movable block 2, and driving rod 22 is fixed on the fixed mould 11, and driving rod 22 is connected with the driving block 23 matched with driving groove 21;

[0028] Combined Figure 4 When opening mould, movable mould 1 moves along the opening mould direction, makes driving block 23 slide relative to driving groove 21, and generates pushing force to movable block 2, so that movable block 2 moves to the outside along the stripping direction of the side lateral undercut, until separating from product 100.At this time, movable block 2 is stripped with side lateral undercut 101, and then movable mould 1 continues to move until completing product 100 stripping.

[0029] When closing mould, driving block 23 generates reverse thrust to driving groove 21, so that movable block 2 resets.

[0030] The utility model discloses a movable block 2 is set, in the initial stage of opening mould, driving force is generated using fixed mould, so that movable block 2 is separated from the structure of side lateral undercut 101, which provides guarantee for the smooth stripping of product 100.The structure is simple, and the action is accurate, and the stripping of undercut structure with large included angle with parting surface is solved.

[0031] The included angle between the driving groove 21 and the opening mould direction can be adaptively set according to the moving direction of the movable block 2.

[0032] As an embodiment, the driving block 23 is a cylindrical structure, and is rotatably sleeved on the driving rod 22;The matching mode of driving block 23 and driving groove 21 is changed into rolling fit, which greatly reduces the friction.

[0033] Combined Figure 5 As an embodiment, the movable mould 1 is fixedly provided with sliding rail 4, and sliding groove 24 is formed in the movable block 2 and matched with the sliding rail 4;Further, the cross-sectional shape of the sliding rail 4 is T-shaped, and the sliding rail 4 and the movable block 2 form stable and accurate sliding fit.

[0034] Better, the sliding rail 4 is two, and the stress of the movable block 2 is dispersed, so that the movable block 2 does not appear to be stuck.

[0035] As an embodiment, the driving groove 21 is two;When opening mould, movable block 2 is simultaneously subjected to the thrust of two driving blocks 23, so that the movable block 2 does not rotate, torque is generated between the sliding rail 4 and the sliding groove 24, and the smooth sliding of the movable block 2 is affected.

[0036] As an embodiment, the movable die 1 is provided with an inclined ejector block 3, and the movable block 2 is slidingly arranged on the inclined ejector block 3. The movable block 2 and the inclined ejector block 3 can be matched to realize the demolding of a more complex product structure. For example, the inclined ejector block 3 is used to form a large reverse buckle structure, and the movable block 2 is used to form a lateral reverse buckle 101 structure. In the initial stage of mold opening, the movable block 2 is first demolded from the lateral reverse buckle 101, and then the inclined ejector block 3 is actuated until the entire product 100 is demolded.

[0037] In order to avoid the movable block 2 from being deviated by external disturbance and causing impact when being reset, refer to Figure 6 As an embodiment, the movable die 1 is further provided with a limiting column 5 arranged below the movable block 2. The top of the limiting column 5 is provided with a retractable limiting block 51. The bottom of the movable block 2 is correspondingly provided with a limiting groove 25 which is matched with the limiting block 51 in shape.

[0038] Optionally, the limiting column 5 is provided with a containing groove, and the limiting block 51 is arranged in the containing groove. The bottom surface of the containing groove and the limiting block 51 are further provided with a reset spring 52.

[0039] When the movable block 2 moves, the limiting block 51 is pressed to retract into the limiting column 5. When the movable block 2 moves to a predetermined position, such as the position where the movable block 2 is separated from the lateral reverse buckle 101, the limiting column 5 is popped out into the limiting groove 25 to limit the self-sliding of the movable block 2 on the movable die 1.

[0040] Optionally, each limiting column 5 corresponds to two groups of limiting grooves 25. The two groups of limiting grooves 25 correspond to two state positions of the movable block 2, i.e., the position where the movable block 2 is separated from the lateral reverse buckle 101 in the mold opening state, and the position where the movable block 2 is reset in the mold closing state.

[0041] Preferably, the cross-sectional shape of the limiting block 51 is isosceles triangle, and the limiting block 51 has two symmetrical guide surfaces 511. After being matched with the limiting groove 25, the state of the movable block 2 is stable. When the movable block 2 moves, the inner wall of the limiting groove 25 presses the guide surface 511 to make the limiting block 51 retract, and the resistance when the two are separated is small.

[0042] In summary, the lateral reverse buckle linkage demolding mechanism provided by the utility model provides a guarantee for the smooth demolding of the product by arranging the movable block, using the driving force generated by the fixed die to separate the movable block from the lateral reverse buckle structure in the initial stage of mold opening. The structure is simple, the action is accurate, and the demolding of the reverse buckle structure with a large included angle with the parting surface is solved by the linkage mode of the movable block and the mold opening action.

[0043] Of course, the utility model also has other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the utility model without departing from the spirit and essence of the utility model. However, these corresponding changes and modifications should belong to the protection range of the claims attached to the utility model.

Claims

1. A lateral undercut linkage demolding mechanism, characterized in that, It includes a moving mold and a fixed mold; the moving mold is provided with a movable block; the movable block is configured to reciprocate on the moving mold along the demolding direction of the lateral undercut; The movable block is provided with a drive groove, and the fixed mold is fixed with a drive rod, which is connected to a drive block that cooperates with the drive groove.

2. The lateral undercut linkage demolding mechanism as described in claim 1, characterized in that, The drive block has a cylindrical structure and is rotatably sleeved on the drive rod.

3. The lateral undercut linkage demolding mechanism as described in claim 1, characterized in that, The moving mold is fixed with a slide rail, and the movable block is provided with a slide groove that fits into the slide rail.

4. The lateral undercut linkage demolding mechanism as described in claim 3, characterized in that, The slide rail has a T-shaped cross-section.

5. The lateral undercut linkage demolding mechanism as described in claim 3, characterized in that, There are two slide rails.

6. The lateral undercut linkage demolding mechanism as described in claim 1, characterized in that, There are two drive slots.

7. The lateral undercut linkage demolding mechanism as described in claim 1, characterized in that, The moving mold is also fixed with a limiting post located below the movable block; the top of the limiting post is provided with a retractable limiting block; the bottom of the movable block is provided with a limiting groove whose shape matches the limiting block.

8. The lateral undercut linkage demolding mechanism as described in claim 7, characterized in that, The limiting post has a receiving groove, and the limiting block is located in the receiving groove; a reset spring is also provided between the bottom surface of the receiving groove and the limiting block.

9. The lateral undercut linkage demolding mechanism as described in claim 7, characterized in that, The limiting post corresponds to two sets of limiting grooves; the two sets of limiting grooves correspond to two state positions of the movable block.

10. The lateral undercut linkage demolding mechanism as described in any one of claims 1 to 9, characterized in that, The moving mold is provided with an inclined ejector block, and the movable block is slidably disposed on the inclined ejector block.

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