Secondary demolding mold for cover body

Abstract

The utility model provides a secondary demoulding mould of a cover body, which comprises a panel, an upper movable mould, a mould core, a lower fixed mould, a first ejector plate, a second ejector plate and a bottom plate, the mould core comprises an upper mould core and a lower mould core, the bottom of the upper mould core is provided with a forming groove, the lower mould core is provided with a forming block, the forming groove and the forming block form a forming cavity, the first ejector plate is provided with a first ejector rod, and the second ejector plate is provided with a second ejector rod. A sliding groove is formed in the first ejector plate, a through hole is formed in one side in the sliding groove, a sliding block is embedded in the other side in the sliding groove in a sliding mode, the upper ejection block is provided with an upper inclined face, and the sliding block is provided with a lower inclined face. During mold closing, the cavity forms a cover body, during mold opening, the first ejector plate and the second ejector plate move upwards, and the first ejector rod and the second ejector rod push a product to be ejected out of the lower mold core; and after the first ejector rod moves upwards for a certain distance, the first ejector rod moves downwards to be separated from the inverted buckle of the cover body, and complete demolding of the product is achieved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a secondary demoulding mold for a cover body. Background Art

[0002] The mold is a tool used to make molded products. Different shapes of molds are used to make products of different shapes, such as Figure 8 The cover shown in the figure has a square hole in the middle and four undercuts at the bottom. When the cover is demoulded, the undercuts are still fastened to the ejector pins after the product is ejected from the mold, and complete demoulding cannot be achieved. Therefore, a secondary ejection mold is required to achieve complete demoulding of the cover. Utility Model Content

[0003] The utility model provides a secondary demoulding mold for a cover body, aiming to solve the technical problem of how to realize complete demoulding of the cover body.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a secondary demoulding mold for a cover body, comprising a panel, an upper movable mold, a mold core, a lower fixed mold, a first ejector plate, a second ejector plate and a bottom plate from top to bottom, the mold core comprising an upper mold core and a lower mold core, a molding groove is opened at the bottom of the upper mold core, a molding block is arranged on the lower mold core, the molding groove and the molding block constitute a molding cavity, the first ejector plate is provided with a plurality of first ejector rods, the first ejector rods can slide through the lower fixed mold and the lower mold core, and the upper end surface of the first ejector rod is aligned with the upper end of the molding block The second ejector plate is provided with a plurality of second ejector rods, the second ejector rods can slide upward through the lower fixed mold and the lower mold core, and the upper end surface of the second ejector rod is flush with the upper end surface of the forming block, a lower ejector block is arranged on the second ejector plate, and an upper ejector block is arranged above the lower ejector block on the bottom of the lower fixed mold, the first ejector plate is provided with a slide groove, a through hole is arranged on one side of the slide groove, and a slider is slidably embedded in the other side of the slide groove, an upper inclined surface is arranged on the side of the upper ejector block facing the slider, and a lower inclined surface is arranged on the side of the slider facing the upper ejector block.

[0005] Furthermore, the forming blocks include four blocks, and a corresponding forming block is provided with 4 first push rods and 12 second push rods.

[0006] Furthermore, a square block is arranged in the middle of the forming block.

[0007] Furthermore, a protrusion is provided on one side of the forming block along the length direction, and the corresponding upper die core has a square groove at one end of the forming groove.

[0008] Furthermore, the forming blocks include four blocks, and the corresponding upper mold core has four forming grooves.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model comprises a panel, an upper movable mold, a mold core, a lower fixed mold, a first ejector plate, a second ejector plate and a bottom plate from top to bottom, the mold core comprises an upper mold core and a lower mold core, a molding groove is formed at the bottom of the upper mold core, a molding block is arranged on the lower mold core, the molding groove and the molding block constitute a molding cavity, the first ejector plate is provided with a plurality of first ejector rods, the first ejector rod can slidably pass through the lower fixed mold and the lower mold core, and the upper end surface of the first ejector rod is flush with the upper end surface of the molding block, the second ejector plate is provided with a plurality of second ejector rods, the second ejector rod can slidably pass through the lower fixed mold and the lower mold core upward, and the upper end surface of the second ejector rod is flush with the upper end surface of the molding block, a lower ejector block is arranged on the second ejector plate, an upper ejector block is arranged above the lower ejector block at the bottom of the lower fixed mold, the first ejector plate is provided with a slide groove, a through hole is formed on one side of the slide groove, a slider is slidably embedded in the other side of the slide groove, an upper inclined surface is arranged on one side of the upper ejector block facing the slider, and a lower inclined surface is arranged on the side of the slider facing the upper ejector block. When the mold is closed, the cavity is used to form the cover body. When the mold is opened, the second ejector plate pushes the lower ejector block upward to push the slider upward. Since the slider is embedded in the first ejector plate, it drives the first ejector plate upward, and the first ejector rod and the second ejector rod push the product to be ejected from the lower mold core. After the first ejector plate moves upward for a distance, due to the cooperation between the slider and the inclined surface of the upper ejector block, the upper ejector block pushes the slider to break away from the contact with the lower ejector block. Under the action of gravity, the first ejector plate moves downward to drive the first ejector rod to move downward, and drives the first molding rod to be released from the undercut of the cover body, thereby realizing complete demolding of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a schematic diagram of the secondary demoulding mold structure of the cover body of the utility model;

[0013] Figure 2 It is a cross-sectional view of the secondary demoulding mold of the cover body of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the first ejector plate and the second ejector plate of the secondary demoulding mold of the cover body of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the first ejector plate of the secondary demoulding mold of the cover body of the utility model;

[0016] Figure 5It is a cross-sectional view of the position of the slider of the first ejector plate of the secondary demoulding mold of the cover body of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the upper mold core of the secondary demoulding mold of the cover body of the utility model;

[0018] Figure 7 It is a structural schematic diagram of the lower mold core of the secondary demoulding mold of the cover body of the utility model;

[0019] Figure 8 It is a structural schematic diagram of the cover body.

[0020] Main component symbols

[0021] 10. Panel;

[0022] 20. Upper movable mold;

[0023] 30, mold core; 301, upper mold core; 3011, forming groove; 302, second mold core; 3021, forming block;

[0024] 40, lower fixed mold; 401, upper ejector block;

[0025] 50, first ejector plate; 501, first ejector rod; 502, slider; 503, through hole;

[0026] 60, second ejector plate; 601, second ejector rod; 602, lower ejector block;

[0027] 70. Bottom plate;

[0028] 80. Cover body; 801. Inverted. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] Example

[0033] like Figure 8 The cover body 80 shown has a square hole in the middle and four undercuts 801 at the bottom of the cover body 80 .

[0034] Reference Figure 1-2 , Figure 6-7 As shown, the utility model discloses a secondary demoulding mold for a cover body, including a panel 10, an upper movable mold 20, a mold core 30, a lower fixed mold 40, a first ejector plate 50, a second ejector plate 60 and a bottom plate 70 from top to bottom. The mold core 30 includes an upper mold core 301 and a lower mold core 30. A molding groove 3011 is opened at the bottom of the upper mold core 301. A molding block 3021 is arranged on the lower mold core 30. The molding groove 3011 and the molding block 3021 constitute a molding cavity. In this embodiment, the molding block 3021 includes 4 blocks, and the corresponding upper mold core 301 has 4 molding grooves 3011. When the mold is closed, 4 cavities can be formed, and 4 cover bodies 80 can be formed at one time, with high molding efficiency. The hot melt adhesive enters the mold cavity from the adhesive inlet of the panel 10 to cool and mold the cover plate body. The molding block 3021 has a molding gap on the side of the first ejector 501, which is used to mold the cover body 80 and buckle 801. A square block is set in the middle of the molding block 3021. When the mold is closed, the upper end of the square block abuts against the bottom of the molding groove 3011 to mold the square hole in the middle of the cover body 80. Furthermore, a convex block is set on one side of the molding block 3021 along the length direction, and the corresponding upper mold core 301 has a square groove at one end of the molding groove 3011. When the mold is closed, the square groove covers the convex block to mold the gap on one side of the cover body 80.

[0035] Reference Figure 2-5 As shown, the first ejector plate 50 is provided with a plurality of first ejector rods 501, which can slide through the lower fixed mold 40 and the lower mold core 30, and the upper end surface of the first ejector rod 501 is flush with the upper end surface of the forming block 3021, and the second ejector plate 60 is provided with a plurality of second ejector rods 601, which can slide upward through the lower fixed mold 40 and the lower mold core 30, and the upper end surface of the second ejector rod 601 is flush with the upper end surface of the forming block 3021. Specifically, the lower end of the first ejector rod 501 is fixed to the first ejector plate 50, and the lower end of the second ejector rod 601 is fixed to the second ejector plate 60, and the second ejector rod 601 can slide through the first ejector plate 50. A forming block 3021 is provided with 4 first ejector rods 501 and 12 second ejector rods 601, which push the product to be demolded to avoid breaking the cover body 80.

[0036] Reference Figure 2-5 As shown, a lower ejector block 602 is arranged on the second ejector plate 60, an upper ejector block 401 is arranged above the lower ejector block 602 at the bottom of the lower fixed mold 40, a slide groove is opened on the first ejector plate 50, a through hole 503 is opened on one side of the slide groove, the upper ejector block 401, the lower ejector block 602 and the through hole 503 are in the same straight line, a slider 502 is slidably embedded on the other side of the slide groove, a spring is arranged on the side of the slider 502 away from the through hole 503, under normal conditions, the spring pushes the slider 502 to be placed on the through hole 503, the upper end of the lower ejector block 602 contacts the bottom of the slider 502, an upper inclined surface is arranged on the side of the upper ejector block 401 facing the slider 502, and a lower inclined surface is arranged on the side of the slider 502 facing the upper ejector block 401. Specifically, when the mold is opened, the second ejector plate 60 moves upward to push the lower ejector block 602 to push the slider 502. Since the slide grooves are provided on both sides, the slider 502 can be slidably embedded in the side grooves. When the lower ejector block 602 pushes the slider 502, it also drives the first ejector plate 50 to move upward. The first ejector plate 50 and the second ejector plate 60 move upward at the same time, driving the first ejector rod 501 and the second ejector rod 601 to move upward at the same time, so as to eject the cover 80 from the lower mold core 30. 01 An upper inclined surface is set on one side of the slider 502, and a lower inclined surface is set on one side of the slider 502 facing the upper ejector block 401. The slider 502 moving upward cooperates with the inclined surface of the upper ejector block 401, and after moving a certain distance, the slider 502 breaks away from the contact with the lower ejector block 602, and the second ejector rod 601 continues to rise. Under the action of gravity, the first ejector plate 50 descends, driving the upper end side surface of the first ejector plate 50 to fall off from the cover body 80 by the inverted buckle 801, thereby achieving complete demoulding of the cover body 80.

[0037] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A secondary demoulding mold for a cover body, characterized in that: The invention comprises a panel, an upper movable mold, a mold core, a lower fixed mold, a first ejector plate, a second ejector plate and a bottom plate from top to bottom, wherein the mold core comprises an upper mold core and a lower mold core, a molding groove is provided at the bottom of the upper mold core, a molding block is provided on the lower mold core, the molding groove and the molding block constitute a molding cavity, the first ejector plate is provided with a plurality of first ejector rods, the first ejector rods can slide through the lower fixed mold and the lower mold core, and the upper end surface of the first ejector rod is flush with the upper end surface of the molding block, the second ejector plate is provided with a plurality of A second ejector rod is provided, and the second ejector rod can slide upward through the lower fixed mold and the lower mold core, and the upper end surface of the second ejector rod is flush with the upper end surface of the forming block. A lower ejector block is arranged on the second ejector plate, and an upper ejector block is arranged on the bottom of the lower fixed mold above the lower ejector block. The first ejector plate is provided with a slide groove, a through hole is arranged on one side of the slide groove, and a sliding block is slidably embedded in the other side of the slide groove. An upper inclined surface is arranged on the side of the upper ejector block facing the sliding block, and a lower inclined surface is arranged on the side of the sliding block facing the upper ejector block.

2. The secondary demoulding mold of the cover according to claim 1, characterized in that: The forming blocks include four blocks, and a corresponding forming block is provided with 4 first push rods and 12 second push rods.

3. The secondary demoulding mold of the cover according to claim 1, characterized in that: A square block is arranged in the middle of the forming block.

4. The secondary demoulding mold of the cover according to claim 1, characterized in that: A convex block is arranged on one side of the molding block along the length direction, and a square groove is opened at one end of the molding groove of the corresponding upper mold core.

5. The secondary demoulding mold of the cover according to claim 1, characterized in that: The forming blocks include four pieces, and the corresponding upper mold core is provided with four forming grooves.

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