Rear mold secondary pitched roof structure of injection mold

Abstract

The utility model discloses a secondary pitched roof structure of a rear mold of an injection mold, which is characterized in that a seat body is stacked at the top of a bottom plate, a lifting slide block penetrates through the seat body and is fixedly connected to the bottom plate, an inclined slide block is clamped at the top of the lifting slide block and can transversely slide relative to the lifting slide block, and the inclined slide block is fixedly connected to the bottom plate. The oblique sliding block inclines towards the oblique upper portion of the lifting sliding block, the oblique fixing block is fixed to the base, a columnar sliding block extending in the oblique direction is fixed to the top of the oblique sliding block and penetrates through the oblique fixing block, a plurality of containing grooves are evenly distributed in the outer side wall of the columnar sliding block, and the depths of the containing grooves are gradually increased from top to bottom. A strip-shaped pitched roof capable of swinging inwards and outwards is arranged in the containing groove, the lower end of the strip-shaped pitched roof abuts against the top of the inclined fixing block in a matched mode, and a forming notch used for forming a workpiece in an inverted buckling mode is formed in the inner side of the upper end of the strip-shaped pitched roof. According to the utility model, the inverted buckle is easy to form, the structure is simple, the linkage relation is reliable, and the small-space injection molding process requirement can be met.

Description

Technical Field

[0001] The utility model relates to an injection mold, in particular to a secondary inclined ejector structure of a rear mold of an injection mold. Background Technique

[0002] The shapes of injection-molded workpieces are diverse, including components with pipe heads and buckles. As Figure 1 shown, the inner side of the workpiece 100 has a pipe head 101, and the periphery of the pipe head 101 has an outwardly convex buckle 102. During the injection molding process, a complex sliding structure is required to achieve the mold opening and closing actions, which not only has a large processing difficulty and complex process, but also has a high mold cost. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a secondary inclined ejector structure of a rear mold of an injection mold that is easy to form undercuts, has a simple structure, a reliable linkage relationship, and can meet the requirements of injection molding processes in small spaces, aiming at the deficiencies of the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions.

[0005] A secondary inclined ejector structure of a rear mold of an injection mold, which includes a base body, a bottom plate, a lifting slider, an inclined slider, and an inclined fixed block. The base body is stacked on the top of the bottom plate. The lifting slider passes through the base body and is fixedly connected to the bottom plate. The inclined slider is clamped on the top of the lifting slider and can slide horizontally relative to the lifting slider. The inclined slider is inclined obliquely upward to the lifting slider. The inclined fixed block is fixed on the base body. A columnar slider extending obliquely is fixed on the top of the inclined slider. The columnar slider passes through the inclined fixed block. A plurality of receiving grooves are evenly distributed on the outer side wall of the columnar slider. The depth of the receiving groove gradually increases from top to bottom. The receiving groove extends along the length direction of the columnar slider. A strip-shaped inclined ejector that can swing inside and outside is arranged in the receiving groove. The lower end of the strip-shaped inclined ejector is in abutting cooperation with the top of the inclined fixed block. A forming notch for forming an undercut of the workpiece is formed on the inner side of the upper end of the strip-shaped inclined ejector. After the workpiece is injection-molded, a preset driving mechanism is used to drive the bottom plate and the lifting slider to descend. The lifting slider pulls the inclined slider downward and makes the inclined slider slide horizontally. The inclined slider obliquely pulls the columnar slider to make the upper ends of the plurality of strip-shaped inclined ejectors move away from each other.

[0006] Preferably, the lower end of the lifting slider is fixedly connected to the bottom plate by bolts.

[0007] Preferably, a T-shaped sliding rail is formed on the top of the lifting slider, and a T-shaped sliding groove is formed on the bottom of the inclined slider. The T-shaped sliding rail is clamped in the T-shaped sliding groove and the two are in sliding fit.

[0008] Preferably, a fixing opening is formed on the top of the inclined slider, the lower end of the columnar slider is inserted into the fixing opening, and the columnar slider and the inclined slider are fixedly connected by screws.

[0009] Preferably, a central opening is formed on the seat body. The lifting slider and the inclined slider are both arranged in the central opening, and the inclined fixing block is fixed at the top end of the central opening.

[0010] Preferably, two guiding pressing strips are fixed in the central opening. The two guiding pressing strips are symmetrically arranged on both sides of the inclined slider, and the inclined slider is in inclined sliding fit with the two guiding pressing strips.

[0011] In the secondary inclined ejection structure of the rear mold of the injection mold disclosed by the present utility model, during mold closing, a preset driving mechanism is used to drive the bottom plate and the seat body to be superposed relative to each other. During the process of the lifting slider rising with the bottom plate, a thrust is applied to the inclined slider, so that the inclined slider slides horizontally while rising obliquely until the columnar slider is lifted to a specified position. At this time, the strip-shaped inclined ejectors in the plurality of accommodating grooves are in a relatively gathered state. In the injection molding process flow, the buckle on the outer side of the pipe head of the workpiece can be processed and formed by using the forming notch. During mold opening, a preset driving mechanism is used to drive the bottom plate to descend, the lifting slider descends accordingly and pulls the inclined slider downward. At the same time, the inclined slider slides horizontally to make an adaptive movement, and the inclined slider obliquely pulls the columnar slider. Because the depth of the accommodating groove gradually increases from top to bottom, under the guiding action of the plurality of accommodating grooves, the upper ends of the plurality of strip-shaped inclined ejectors are separated from each other, so that the forming notch is separated from the formed buckle. Compared with the prior art, the present utility model is easy to form an undercut, and at the same time, the linkage relationship of the secondary inclined ejection structure of the rear mold is reliable, the overall structure is simpler, and it can meet the requirements of the injection molding process in a smaller space. Description of the Drawings

[0012] Figure 1 is a three-dimensional view of the workpiece;

[0013] Figure 2 is a structural diagram of the interior of the injection mold;

[0014] Figure 3 is an exploded view of the secondary inclined ejection structure of the rear mold of the present utility model;

[0015] Figure 4 is a partial structural diagram of the secondary inclined ejection structure of the rear mold of the present utility model;

[0016] Figure 5 It is a structural diagram of a columnar slider and a strip-shaped lifter

[0017] Figure 6 It is a comparison view of the action state of the secondary lifter structure of the rear mold of the present utility model. Specific implementation mode

[0018] The present utility model will be described in more detail below in conjunction with the drawings and embodiments.

[0019] The present utility model discloses a secondary lifter structure for the rear mold of an injection mold. As shown in conjunction with Figures 1 to 6 the figure, it includes a base body 1, a bottom plate 2, a lifting slider 3, an inclined slider 4 and an inclined fixing block 5. The base body 1 is stacked on the top of the bottom plate 2. The lifting slider 3 passes through the base body 1, and the lifting slider 3 is fixedly connected to the bottom plate 2. The inclined slider 4 is clamped on the top of the lifting slider 3, and the inclined slider 4 can slide horizontally relative to the lifting slider 3. The inclined slider 4 is inclined obliquely upward relative to the lifting slider 3. The inclined fixing block 5 is fixed on the base body 1. A columnar slider 6 extending obliquely is fixed on the top of the inclined slider 4. The columnar slider 6 passes through the inclined fixing block 5. A plurality of receiving grooves 60 are evenly distributed on the outer side wall of the columnar slider 6. The depth of the receiving groove 60 gradually increases from top to bottom. The receiving groove 60 extends along the length direction of the columnar slider 6. A strip-shaped lifter 61 that can swing inside and outside is arranged in the receiving groove 60. The lower end of the strip-shaped lifter 61 abuts and cooperates with the top of the inclined fixing block 5. A forming notch 62 for forming an undercut of the workpiece is formed on the inner side of the upper end of the strip-shaped lifter 61. After the workpiece 100 is injection molded, a preset driving mechanism is used to drive the bottom plate 2 and the lifting slider 3 to descend. The lifting slider 3 pulls the inclined slider 4 downward and makes the inclined slider 4 slide horizontally. The inclined slider 4 obliquely pulls the columnar slider 6, so that the upper ends of the plurality of strip-shaped lifters 61 move away from each other.

[0020] In the above structure, during mold clamping, a preset driving mechanism is used to drive the bottom plate 2 and the seat body 1 to be superposed relative to each other. During the process of the lifting slider 3 rising with the bottom plate 2, a thrust is applied to the inclined slider 4, so that the inclined slider 4 slides laterally while rising obliquely until the columnar slider 6 is lifted to a specified position. At this time, the strip-shaped inclined cores 61 in the plurality of receiving grooves 60 are in a relatively converged state. In the injection molding process, the buckle 102 on the outer side of the pipe head 101 of the workpiece 100 can be processed and formed by using the forming notch 62. During mold opening, a preset driving mechanism is used to drive the bottom plate 2 to descend, and the lifting slider 3 descends accordingly and pulls the inclined slider 4 downward. At the same time, the inclined slider 4 slides laterally to make an adaptive movement. The inclined slider 4 obliquely pulls the columnar slider 6. Since the depth of the receiving groove 60 gradually increases from top to bottom, under the guiding action of the plurality of receiving grooves 60, the upper ends of the plurality of strip-shaped inclined cores 61 move away from each other and open, so that the forming notch 62 is separated from the formed buckle 102. The action state comparison view is as shown in Figure 6 shown. Compared with the prior art, the utility model is easy to form undercuts, and at the same time, the linkage relationship of the secondary inclined core structure of the rear mold is reliable, the overall structure is simpler, and it can meet the injection molding process requirements of a smaller space.

[0021] In order to reliably fix the lifting slider 3, in this embodiment, please refer to Figure 3 , the lower end of the lifting slider 3 is fixedly connected to the bottom plate 2 by bolts 30.

[0022] As a preferred method, a T-shaped slide rail 31 is formed at the top of the lifting slider 3, and a T-shaped slide groove 40 is formed at the bottom of the inclined slider 4. The T-shaped slide rail 31 is clamped in the T-shaped slide groove 40 and the two are in sliding fit.

[0023] In the above structure, based on the sliding fit relationship between the T-shaped slide rail 31 and the T-shaped slide groove 40, when the lifting slider 3 applies a pushing and pulling force to the inclined slider 4, the inclined slider 4 can not only slide obliquely, but also adaptively adjust its lateral position along the T-shaped slide rail 31, and the linkage relationship is more reliable.

[0024] Please refer to Figure 4 , in order to stably install the columnar slider 6, in this embodiment, a fixing opening 41 is formed at the top of the inclined slider 4, the lower end of the columnar slider 6 is inserted into the fixing opening 41, and the columnar slider 6 and the inclined slider 4 are fixedly connected by screws.

[0025] Please refer to Figure 2, in this embodiment, a central opening 10 is formed in the base body 1. The lifting slider 3 and the diagonal slider 4 are both arranged in the central opening 10, and the diagonal fixing block 5 is fixed to the top end of the central opening 10. By forming the central opening 10 in the base body 1 in this embodiment, it can not only accommodate the lifting slider 3 and the diagonal slider 4, but also provide a lifting space for the lifting slider 3 and a diagonal sliding channel for the diagonal slider 4.

[0026] To ensure the stable diagonal sliding of the diagonal slider 4, in this embodiment, please refer to Figure 3 , two guiding strips 7 are fixed in the central opening 10. The two guiding strips 7 are symmetrically arranged on both sides of the diagonal slider 4, and the diagonal slider 4 is in diagonal sliding fit with the two guiding strips 7.

[0027] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements or improvements made within the technical scope of the present invention shall be included within the scope protected by the present invention.

Claims

1. A secondary inclined top structure of a rear mold of an injection mold, characterized in that: The invention comprises a base body (1), a bottom plate (2), a lifting slider (3), an oblique slider (4) and an oblique fixed block (5); the base body (1) is stacked on the top of the bottom plate (2); the lifting slider (3) passes through the base body (1) and is fixedly connected to the bottom plate (2); the oblique slider (4) is clamped on the top of the lifting slider (3) and can slide laterally relative to the lifting slider (3); the oblique slider (4) is inclined obliquely upward of the lifting slider (3); the oblique fixed block (5) is fixed on the base body (1); an obliquely extending columnar slider (6) is fixed on the top of the oblique slider (4); the columnar slider (6) passes through the oblique fixed block (5); and the outer wall of the columnar slider (6) is evenly distributed with a plurality of accommodating grooves. (60), the depth of the accommodating groove (60) gradually increases from top to bottom, the accommodating groove (60) extends along the length direction of the columnar slider (6), a strip-shaped inclined top (61) that can swing inwards and outwards is provided in the accommodating groove (60), the lower end of the strip-shaped inclined top (61) is abutted against the top of the inclined fixing block (5), and a molding recess (62) for making the workpiece inverted molding is formed on the inner side of the upper end of the strip-shaped inclined top (61), after the workpiece (100) is injection molded, the base plate (2) and the lifting slider (3) are driven downward by a preset driving mechanism, the lifting slider (3) pulls the inclined slider (4) downward and makes the inclined slider (4) slide horizontally, and the inclined slider (4) obliquely pulls the columnar slider (6) so that the upper ends of the plurality of strip-shaped inclined tops (61) are separated from each other.

2. The secondary inclined top structure of the rear mold of the injection mold according to claim 1, characterized in that: The lower end of the lifting slide block (3) is fixedly connected to the bottom plate (2) via bolts (30).

3. The secondary inclined top structure of the rear mold of the injection mold according to claim 1, characterized in that: A T-shaped slide rail (31) is formed at the top of the lifting slider (3), and a T-shaped slide groove (40) is formed at the bottom of the oblique slider (4). The T-shaped slide rail (31) is clamped in the T-shaped slide groove (40) and the two are slidably matched.

4. The secondary inclined top structure of the rear mold of the injection mold according to claim 1, characterized in that: The top of the oblique sliding block (4) is provided with a fixing opening (41), the lower end of the columnar sliding block (6) is inserted into the fixing opening (41), and the columnar sliding block (6) and the oblique sliding block (4) are fixedly connected by screws.

5. The secondary inclined top structure of the rear mold of the injection mold according to claim 1, characterized in that: The seat body (1) is provided with a central opening (10), the lifting slider (3) and the oblique slider (4) are both arranged in the central opening (10), and the oblique fixing block (5) is fixed to the top end of the central opening (10).

6. The secondary inclined top structure of the rear mold of the injection mold according to claim 5, characterized in that: Two guide strips (7) are fixed in the middle opening (10), the two guide strips (7) are symmetrically arranged on both sides of the oblique sliding block (4), and the oblique sliding block (4) and the two guide strips (7) are obliquely slidably matched.

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