Mold structure for ejecting product by utilizing inward shrinkage of sliding block

Abstract

The utility model discloses a mould structure for ejecting a product by utilizing the inward shrinkage of a slide block, which comprises an ejection mechanism and a slide block movement mechanism, the slide block movement mechanism comprises a guide plate, a slide block movably matched on the guide plate, a power unit connected with the slide block and a core-pulling insert connected with the slide block, the guide plate is movably matched on a rear mould plate, and the power unit is connected with the core-pulling insert. And the guide plate is connected with the ejection mechanism, one end of the guide plate is provided with an inward shrinkage blocking piece, and the core-pulling insert penetrates through the inward shrinkage blocking piece and extends into a mold cavity of the rear mold core. During demolding, the front mold plate is separated from the rear mold plate, the ejection mechanism drives the whole sliding block movement mechanism to move forwards, a product on the core-pulling insert is separated from the rear mold core, the power unit drives the sliding block to retreat, the core-pulling insert retreats along with the sliding block, the product is separated from the core-pulling insert under the blocking of the inward shrinkage blocking piece, and the phenomenon that ejector pin marks are left on the appearance of the demolded pen container type product is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould, concretely relates to a mould of pen container type product. BACKGROUND

[0002] The pen container type product needs to be ejected from the mould cavity by a ejector pin when demoulding, and thus the appearance of the product leaves the mark of the ejector pin. SUMMARY

[0003] The utility model solves the technical problem that the appearance of the pen container type product leaves the mark of the ejector pin after demoulding.

[0004] To solve the above technical problem, the utility model provides the following technical scheme: a mould structure for ejecting products by retracting a sliding block, comprising an ejecting mechanism and a sliding block movement mechanism, the sliding block movement mechanism comprising a guide plate, a sliding block movably fitted on the guide plate, a power unit connected with the sliding block, and a core-pulling insert connected with the sliding block, the guide plate is movably fitted on a back mould plate, the guide plate is connected with the ejecting mechanism, one end of the guide plate is provided with a retracting stopper, the core-pulling insert passes through the retracting stopper and extends into the mould cavity of a back mould core.

[0005] The front mould plate is combined on the back mould plate, and the pen container type product is formed in the mould cavity of the back mould core. When demoulding, the front mould plate is separated from the back mould plate, the ejecting mechanism drives the whole sliding block movement mechanism to move forward, and the product on the core-pulling insert is separated from the back mould core. Then, the power unit drives the sliding block to retreat, the core-pulling insert retreats along with the sliding block, and under the block of the retracting stopper, the product is separated from the core-pulling insert.

[0006] The ejecting mechanism comprises an ejector pin module in a back mould frame and an ejector pin fixed on the ejector pin module, and the ejector pin is fixedly connected with the guide plate. The ejector pin module is connected with a linear drive unit, and under the drive of the linear drive unit, the ejector pin module moves back and forth, thereby driving the ejector pin and the whole sliding block movement mechanism to move back and forth.

[0007] The back mould plate is provided with a recess structure, the guide plate is fitted in the recess structure, and the ejector pin passes through the back mould plate and is connected with the guide plate.

[0008] The edge of the sliding block is provided with a guide convex part, the guide plate is provided with a pressing block, and the guide convex part is fitted in the groove of the pressing block.

[0009] As an option, the power unit adopts an oil cylinder, one end of the guide plate is provided with an oil cylinder stopper, and the power unit is installed on the oil cylinder stopper.

[0010] The utility model adopts the core-pulling demoulding mode, thereby avoiding that the appearance of the pen container type product after demoulding leaves the mark of the ejector pin. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be further described below in combination with the drawings:

[0012] Figure 1 is a schematic view of the mold structure;

[0013] Figure 2 is a schematic view of the mold structure; Figure 1 is a schematic view of the mold structure after transparent treatment of the rear mold plate 20;

[0014] Figure 3 is a top view of the mold structure.

[0015] Explanation of symbols in the figures:

[0016] 10, guide plate; 11, slider; 12, core-pulling insert; 13, inwardly retracting stopper; 14, guide protrusion; 15, pressing block; 16, oil cylinder stopper; 17, oil cylinder;

[0017] 20, rear mold plate; 21, rear mold core; 22, rear mold frame; 23, recessed structure;

[0018] 30, ejector pin module; 31, ejector pin;

[0019] 40, pen barrel type product. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 3 A mold structure for ejecting a product by retracting a slider, comprising an ejecting mechanism and a slider movement mechanism, the slider movement mechanism comprising a guide plate 10, a slider 11 movably fitted on the guide plate, a power unit connected to the slider, and a core-pulling insert 12 connected to the slider, the guide plate being movably fitted on a rear mold plate 20, the guide plate being connected to the ejecting mechanism, one end of the guide plate being provided with an inwardly retracting stopper 13, the core-pulling insert passing through the inwardly retracting stopper and extending into a mold cavity of a rear mold core 21.

[0021] The ejecting mechanism comprises an ejector pin module 30 located in a rear mold frame 22 and an ejector pin 31 fixed on the ejector pin module, the ejector pin being fixedly connected to the guide plate 10.

[0022] The rear mold plate 20 is provided with a recessed structure 23, the guide plate 10 being fitted in the recessed structure, and the ejector pin 31 passing through the rear mold plate and being connected to the guide plate.

[0023] The edge of the slider 11 is provided with a guide protrusion 14, and the guide plate 10 is provided with a pressing block 15, the guide protrusion being fitted in a groove of the pressing block.

[0024] The power unit is an oil cylinder 17, one end of the guide plate 10 is provided with an oil cylinder stopper 16, and the power unit is installed on the oil cylinder stopper.

[0025] The front mold plate (not shown in the drawings) is closed on the rear mold plate 20, and the pen barrel type product 40 is formed in the mold cavity of the rear mold core 21. When demolding, the front mold plate is separated from the rear mold plate 20, the linear drive unit drives the ejector pin module 30 to move forward, the ejector pin 31 drives the entire slider movement mechanism to move forward by 40 mm, and the product on the core-pulling insert 12 is separated from the rear mold core 21. Then, the oil cylinder 17 drives the slider 11 to retreat, the core-pulling insert 12 retreats with it, and under the blockage of the inner shrinkage block 13, the product is separated from the core-pulling insert.

[0026] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, the specific embodiments and application scope can be changed according to the idea of the present application, and the content of the specification should not be understood as limiting the present application.

Claims

1. A mold structure for ejecting a product by retracting a slide, comprising an ejecting mechanism and a slide moving mechanism, the slide moving mechanism comprising a guide plate (10), a slide (11) movably fitted on the guide plate, a power unit connected to the slide, and a core-pulling insert (12) connected to the slide, characterized in that: The guide plate is movably matched on the back mold plate (20), the guide plate is connected with the ejection mechanism, one end of the guide plate is provided with a retraction stopper (13), the core pulling insert passes through the retraction stopper and extends into the mold cavity of the back mold core (21).

2. The mold structure for ejecting a product by retracting a slider according to claim 1, wherein: The ejection mechanism comprises a ejector pin module (30) in the back mold frame (22) and an ejector pin (31) fixed on the ejector pin module, and the ejector pin is fixedly connected with the guide plate (10).

3. The mold structure for ejecting a product by retracting a slide as set forth in claim 2, wherein: The back mold plate (20) is provided with a recess structure (23), the guide plate (10) is matched in the recess structure, and the ejector pin (31) passes through the back mold plate and is connected with the guide plate.

4. The mold structure for ejecting a product by retracting a slider according to Claim 1, wherein: The edge of the sliding block (11) is provided with a guide convex part (14), the guide plate (10) is provided with a pressing block (15), and the guide convex part is matched in the groove of the pressing block.

5. The mold structure for ejecting a product by retracting a slider according to Claim 1, wherein: One end of the guide plate (10) is provided with a cylinder stop plate (16), and a power unit is installed on the cylinder stop plate.

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