CN212045786U

CN212045786U - Reversing ejection mechanism in reversing sliding block for injection mold

Info

Publication number: CN212045786U
Application number: CN202020394101.2U
Authority: CN
Inventors: 孔祥忠
Original assignee: Jiangsu Xinquan Mould Co ltd; Jiangsu Xinquan Automotive Trim Co ltd
Current assignee: Jiangsu Xinquan Mould Co ltd; Jiangsu Xinquan Automotive Trim Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-12-01
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a be used for ejecting mechanism of switching-over in injection mold switching-over slider, including slider structure, slider switching-over structure, the ejecting structure of switching-over, slider structure is used for the drawing of patterns of shaping part, can go forward the backset along product back-off drawing of patterns direction under switching-over mechanism's drive. The slider reversing structure is used for driving the slider structure, and when an included angle of more than 30 degrees exists between the motion direction of a product slider and the plane of a mold, the slider can be prevented from being clamped to cause the fracture of an inclined guide post of a mold driving part through the reversing structure. The reversing ejection structure is used for converting the movement in the mold opening direction through the slide block reversing mechanism, ejecting the product out of the slide block, and facilitating the demolding of the product. The utility model discloses a slider structure, slider switching-over structure and the ejecting structure of switching-over solve the problem of product drawing of patterns difficulty in the big angle downhill path slider, improved the product percent of pass, effectively reduced product shaping cycle, simplified process flow, reduction in production cost, provide the product that the smell is lower.

Description

Reversing ejection mechanism in reversing sliding block for injection mold

Technical Field

The utility model relates to an automobile injection mold.

Background

At present, when the reversing sliding block product is difficult to demould, the problem of serious sticking in the sliding block is solved mainly by strengthening polishing, and when polishing cannot be solved, a demoulding agent needs to be sprayed during production, so that the production period of the product can be prolonged, the production cost is improved, and the odor of the product can exceed the standard.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a be used for ejecting mechanism of switching-over in injection mold switching-over slider can solve the product drawing of patterns difficulty in the switching-over slider, improves the product percent of pass, effectively reduces product molding cycle.

A mechanism for reversing ejection in a reversing sliding block of an injection mold comprises a sliding block structure, a sliding block reversing structure and a reversing ejection structure, wherein the sliding block structure comprises a sliding block body for product molding, sliding block pressing strips are respectively fixed on two sides of the sliding block body, and a sliding block driving groove is formed in the sliding block body; the slide block reversing structure comprises a slide block reversing body, an inclined guide pillar is arranged on the slide block reversing body, and an inclined guide pillar pressing plate is arranged on one side of the inclined guide pillar; a stop block is arranged at the rear side of the slide block reversing body, and slide block body pressing strips are respectively fixed at the two sides of the slide block reversing body; set up the ejecting structure of switching-over in slider structure and the slider switching-over structure, the ejecting structure of switching-over includes the drive block, the drive block is connected one-level knockout rod, the second grade knockout rod is connected to one-level knockout rod, set up one-level reset spring on the one-level knockout rod, set up second grade reset spring on the second grade knockout rod, ejecting piece is connected to the second grade knockout rod, one-level reset spring and one-level knockout rod set up in slider switching-over structure, second grade reset spring, second grade knockout rod and ejecting piece setting are in the slider structure.

The utility model discloses a slider structure, slider switching-over structure and the ejecting structure of switching-over solve the problem of product drawing of patterns difficulty in the big angle downhill path slider, improved the product percent of pass, effectively reduced product shaping cycle, simplified process flow, reduction in production cost, provide the product that the smell is lower.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the slider structure of the present invention.

Fig. 3 is a schematic diagram of the slider reversing structure of the present invention.

Fig. 4 is a schematic diagram of the reversing ejection structure of the present invention.

Fig. 5a is an analytic view of the operation principle of the reversing slider according to the present invention (in a mold clamping state).

Fig. 5b is an analytic view of the action principle of the reversing slider (in the mold-opening state).

Fig. 6a is an analytic view of the principle of the reversing ejection operation (mold closing state) of the present invention.

Fig. 6b is an analytic view of the reversing ejection action principle (mold opening state) of the present invention.

Fig. 7a is a schematic diagram of the ejection reset state (reset state) of the present invention.

Fig. 7b is the schematic diagram of the ejection reset state (ejection state) of the present invention.

Detailed Description

Referring to fig. 1, a reversing ejection mechanism in a reversing sliding block of an injection mold comprises a sliding block structure 1, a sliding block reversing structure 2 and a reversing ejection structure 3. The slider structure 1 is used for demoulding a forming part and can move forwards and backwards along the reverse buckling demoulding direction of a product 100 under the driving of a reversing mechanism. The slider reversing structure 2 is used for driving the slider structure, and when an included angle larger than 30 degrees exists between the motion direction of a product slider and the plane of a mold, the slider can be prevented from being clamped to cause the fracture of an inclined guide post of a mold driving part through the reversing structure. The reversing ejection structure 3 is used for converting the movement in the mold opening direction through the slide block reversing mechanism, ejecting the product out of the slide block, and facilitating the demolding of the product.

As shown in fig. 2, the slider structure 1 includes a slider body 11 for product molding, the slider body 11 is mainly used for product molding, slider pressing strips 12 are respectively fixed on two sides of the slider body 11, one side is arranged, the slider pressing strips 12 are used for slider positioning and slider movement direction limitation, a slider driving groove 13 is arranged on the slider body 11, and the slider driving groove 13 is used for converting slider movement direction and converting horizontal movement of a slider driving part into slider direction movement.

As shown in fig. 3, the slider reversing structure 2 includes a slider reversing body 21, the slider reversing body 21 is used for converting the up-down slope sliding of the slider into horizontal movement, two inclined guide pillars 22 are arranged on the slider reversing body 21, the inclined guide pillars 22 are used for driving the slider reversing body to move horizontally, and an inclined guide pillar pressing plate 23 is arranged on one side of each inclined guide pillar 22 and used for fixing the inclined guide pillar 22 in the mold cavity; the rear side of the slider reversing body 21 is provided with a stop block 25 for limiting the slider after movement, and both sides of the slider reversing body 21 are respectively fixed with slider pressing strips 24 for limiting the movement direction of the slider reversing body to horizontal movement.

The reversing ejection structures 3 are arranged in the slider structure 1 and the slider reversing structure 2, as shown in fig. 4, the reversing ejection structures 3 comprise driving blocks 31, the driving blocks 31 are used for providing stop surfaces to eject one-level ejection rods when molds are opened, so that the ejection rods and the sliders move relatively, the driving blocks 31 are connected with one-level ejection rods 33, one-level reset springs 32 are arranged on the one-level ejection rods 33, the one-level reset springs 32 are used for resetting the one-level ejection rods 33, the one-level ejection rods 33 provide one-level ejection directions and transmission ejection forces, the one-level ejection rods 33 are connected with second-level ejection rods 35, second-level reset springs 34 are arranged on the second-level ejection rods 35, the second-level ejection rods 35 provide second-level ejection directions and transmission ejection forces, the second-level reset springs 34 are used for resetting the second-level ejection rods 35, the second-level ejection rods 35 are connected with ejection blocks 36. The first-level reset spring 32 and the first-level ejection rod 33 are arranged in the slider reversing structure, and the second-level reset spring 34, the second-level ejection rod 35 and the ejection block 36 are arranged in the slider structure.

As shown in fig. 5a and 5b, the operation principle of the slide switch is analyzed, the inclined guide post 22 is fixed to the mold cavity 200, and the slide body 11 and the slide switch body 21 are fixed to the mold core. When the mold is opened, the mold cavity drives the inclined guide post 22 to move upwards, the inclined guide post 22 drives the slider reversing body 21 to move L1 along the slider pressing strip 24, and under the action of the slider driving groove 13, the slider reversing body 21 drives the slider body 11 to move L2 along the slider pressing strip 12.

As shown in fig. 6a and 6b, the principle of the reversing ejection operation is analyzed, and the slider body 11 and the slider reversing body 21 are operated under the mold opening force to separate the slider body from the product. At this time, the stopper surface 311 of the driving block 31 is parallel to the mold opening direction, and this surface and the primary knock-out lever 33 do not move relatively in the left-right direction in the figure. Therefore, the first-stage ejector rod 33 does not move relative to the product and the core, and the stop surface 331 of the first-stage ejector rod 33 is attached to the second-stage ejector rod 35, so that the second-stage ejector rod 35 and the ejector block 36 do not move relative to the product. The slider body 11 is moved away from the product while the ejector block 36 remains stationary so that the ejector block 36 can eject the product by an ejection distance L2, which is controlled by the length of the rear stop surface.

Referring to fig. 7a and 7b, the ejection reset state is illustrated, and the reset state and the ejection state are illustrated.

Claims

1. A mechanism for reversing ejection in a reversing sliding block of an injection mold is characterized by comprising a sliding block structure (1), a sliding block reversing structure (2) and a reversing ejection structure (3), wherein the sliding block structure comprises a sliding block body (11) for product molding, sliding block pressing strips (12) are respectively fixed on two sides of the sliding block body (11), and a sliding block driving groove (13) is formed in the sliding block body (11); the slide block reversing structure comprises a slide block reversing body (21), an inclined guide post (22) is arranged on the slide block reversing body (21), and an inclined guide post pressing plate (23) is arranged on one side of the inclined guide post (22); a stop block (25) is arranged at the rear side of the slider reversing body (21), and slider body pressing strips (24) are respectively fixed at two sides of the slider reversing body (21); set up the ejecting structure of switching-over in slider structure and the slider switching-over structure, the ejecting structure of switching-over includes drive block (31), one-level knock-out pole (33) is connected in drive block (31), second grade knock-out pole (35) is connected in one-level knock-out pole (33), set up one-level reset spring (32) on one-level knock-out pole (33), set up second grade reset spring (34) on second grade knock-out pole (35), ejecting piece (36) is connected in second grade knock-out pole (35), one-level reset spring (32) and one-level knock-out pole (33) set up in slider switching-over structure, second grade reset spring (34), second grade knock-out pole (35) and ejecting piece (36) set up in the slider structure.