Storage box injection mold with edge opening back-off inclined top demolding mechanism

Abstract

The utility model provides a storage box injection mold with an edge opening back-off inclined top demolding mechanism, and belongs to the technical field of molds. The die comprises an upper die plate and a lower die plate, a forming cavity is formed between the upper die plate and the lower die plate, the upper die plate is provided with a rectangular forming groove which is concave inwards, a rectangular insert which can be inserted into the rectangular forming groove is arranged on the lower die plate in a protruding mode, and the forming cavity is formed between the rectangular insert and the rectangular forming groove. The containing box body can be formed through injection molding of the forming cavity formed by combining the rectangular forming groove and the rectangular insert, the edge opening forming structure can directly form an inwards-concave edge opening in the containing box body, follow-up machining is not needed, and therefore the injection molding efficiency of the containing box body can be improved; and the edge opening back-off inclined ejection demolding mechanism can obliquely move upwards away from the edge opening forming structure when the storage box main body is ejected out, so that the ejection of the storage box main body can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection mold for a storage box with an edge-inverted, inclined top demoulding mechanism. Background Art

[0002] The storage box body is generally formed by injection molding, and the storage box needs to be used with accessories such as a box cover when in use. After the common box cover is assembled with the storage box, the edge of the box cover is flush with the outer wall of the storage box, which makes the storage box more beautiful. However, in order to facilitate the removal of the box cover, it is necessary to provide an inward-concave edge structure at the opening of the storage box. However, when the mold in the prior art is used to injection mold the storage box, it is impossible to directly form an inward-concave edge on the storage box, and the storage box needs to be processed after the injection molding. However, this will increase the production process of the storage box and reduce the production efficiency of the storage box.

[0003] For example, a Chinese patent discloses an injection mold for a blind box storage box shell [application number: 202321488464.2], including an upper template with a cavity inside; a lower template with a core inside; the upper template and the lower template can approach or move away from each other through a guide column, and a side molding block is slidably provided on the lower template, and a plurality of side molding blocks are provided; the cavity, the core and the side molding blocks are in contact and fit with each other to form a closed molding cavity; a driving mechanism is fixedly provided at the side end of the lower template, and the driving mechanism includes a connecting part and an input part, the connecting part is respectively connected to two adjacent side molding blocks, and the input part is dynamically connected to the connecting part. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a storage box injection mold with an edge undercut inclined top demoulding mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A storage box injection mold with an edge inverted sloping demoulding mechanism comprises an upper template and a lower template, a molding cavity is arranged between the upper template and the lower template, an inwardly recessed rectangular molding groove is arranged on the upper template, a rectangular insert that can be inserted into the rectangular molding groove is protruded on the lower template, the molding cavity is formed between the rectangular insert and the rectangular molding groove, an edge molding structure connected to the molding cavity is also arranged between the upper template and the lower template, and an edge inverted sloping demoulding mechanism is arranged at the corresponding positions of the rectangular insert and the edge molding structure.

[0007] In the above-mentioned storage box injection mold with an edge-undercut sloping top demolding mechanism, the edge molding structure includes an edge molding block protrudingly arranged on the lower mold plate and a molding block mounting groove recessed inwardly arranged on the upper mold plate, and the inner end surface of the edge molding block is inserted into the molding cavity.

[0008] In the above-mentioned storage box injection mold with an edge-undercut inclined top demolding mechanism, the edge-undercut inclined top demolding mechanism includes an inclined top block embedded in a rectangular insert and slidably matched with the rectangular insert, the upper end face and the outer side face of the inclined top block are respectively flush with the upper end face and the side face of the rectangular insert, and the outer side face of the inclined top block is arranged corresponding to the edge forming block.

[0009] In the above-mentioned storage box injection mold with edge undercut inclined ejector demoulding mechanism, an edge molding groove which is recessed inwards is also provided on the outer side surface of the inclined ejector block.

[0010] In the above-mentioned storage box injection mold with the edge undercut inclined ejector mechanism, the inner end surface of the edge forming block and the edge forming groove are both arc surfaces.

[0011] In the above-mentioned storage box injection mold with an edge-undercut inclined ejector demolding mechanism, the edge-undercut inclined ejector demolding mechanism also includes a top plate arranged on the lower side of the lower mold plate, and an inclined ejector rod is hinged on the top plate, and the top end of the inclined ejector rod is fixedly connected to the inclined ejector block and the top end of the inclined ejector rod is inclined toward the side away from the edge molding groove.

[0012] In the above-mentioned storage box injection mold with edge-inverted inclined ejector demoulding mechanism, three straight ejector rods are also fixedly connected to the top plate, and the tops of the three straight ejector rods vertically penetrate the rectangular insert and are flush with the upper end surface of the rectangular insert.

[0013] In the above-mentioned storage box injection mold with edge-undercut inclined ejector demoulding mechanism, three straight ejector rods are arranged on the side of the rectangular insert away from the inclined ejector block.

[0014] In the above-mentioned storage box injection mold with an edge-inverted inclined top demoulding mechanism, a support portion forming block with a rectangular ring-shaped cross section is protruded from the connection between the lower mold plate and the rectangular insert.

[0015] In the above-mentioned storage box injection mold with edge-inverted inclined top demoulding mechanism, the rectangular insert is detachably connected to the lower mold plate through a plurality of screws.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The molding cavity formed by the combination of the rectangular molding groove and the rectangular insert can be injection molded to form the storage box body. The edge molding structure can directly mold an inwardly concave edge on the storage box body without the need for subsequent processing, thereby improving the injection molding efficiency of the storage box body. The edge inverted inclined ejection demolding mechanism can move obliquely upward away from the edge molding structure when the storage box body is ejected, thereby realizing the ejection of the storage box body.

[0018] 2. The inner end surface of the edge forming block is inserted into the molding cavity, so that a concave edge can be formed on the storage box body during injection molding of the storage box. The edge forming groove can make the inner side of the edge forming part of the storage box protrude toward the inner side of the inner cavity of the storage box, so that the thickness of the edge part of the storage box is the same as that of the other parts of the storage box. The inclined ejector block can move obliquely upward toward the inner side of the rectangular inlay when the product is ejected, so that the rectangular inlay and the edge part are separated. When the top plate moves upward, the inclined ejector rod can drive the inclined ejector block to move obliquely upward. The top end of the inclined ejector rod is inclined toward the side away from the edge forming groove, so that the inclined ejector block can be separated from the edge part when the product is ejected.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a structural diagram of the lower template;

[0022] Figure 3 It is a structural schematic diagram of the upper template;

[0023] Figure 4 It is a partial structural schematic diagram of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the edge undercut inclined ejector mechanism.

[0025] In the figure, an upper template 1, a lower template 2, a rectangular forming groove 3, a rectangular insert 4, a bead forming structure 5, a bead inverted inclined ejector mechanism 6, a bead forming block 7, a forming block mounting groove 8, an inclined ejector block 9, a bead forming groove 10, a top plate 11, an inclined ejector rod 12, a straight ejector rod 13, and a supporting portion forming block 14. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, a storage box injection mold with an edge inverted slanted top demolding mechanism includes an upper template 1 and a lower template 2, a molding cavity is arranged between the upper template 1 and the lower template 2, the upper template 1 is provided with an inwardly recessed rectangular molding groove 3, the lower template 2 is provided with a protruding rectangular insert 4 which can be inserted into the rectangular molding groove 3, the molding cavity is formed between the rectangular insert 4 and the rectangular molding groove 3, an edge molding structure 5 connected to the molding cavity is also arranged between the upper template 1 and the lower template 2, and an edge inverted slanted top demolding mechanism 6 is arranged at the corresponding positions of the rectangular insert 4 and the edge molding structure 5.

[0027] In the utility model, the molding cavity formed by the combination of the rectangular molding groove 3 and the rectangular insert can be injection molded to form the storage box body, and the edge molding structure can directly mold an inwardly concave edge on the storage box body without the need for subsequent processing, thereby improving the injection molding efficiency of the storage box body, and the edge inverted inclined ejection demolding mechanism can move obliquely upward away from the edge molding structure 5 when the storage box body is ejected, thereby realizing the ejection of the storage box body.

[0028] Specifically, the edge forming structure 5 includes an edge forming block 7 protruding from the lower template 2 and a forming block mounting groove 8 recessed inwardly on the upper template 1, wherein the inner end surface of the edge forming block 7 is inserted into the forming cavity. When the inner end surface of the edge forming block 7 is inserted into the forming cavity, a concave edge can be formed on the storage box body during injection molding of the storage box.

[0029] Specifically, the edge undercut inclined ejector mechanism 6 includes an inclined ejector block 9 embedded in the rectangular insert 4 and slidingly matched with the rectangular insert 4. The upper end face and the outer side face of the inclined ejector block 9 are flush with the upper end face and the side face of the rectangular insert 4 respectively. The outer side face of the inclined ejector block 9 is arranged corresponding to the edge forming block 7. The outer side face of the inclined ejector block 9 is also provided with an inwardly recessed edge forming groove 10. The edge forming groove 10 can make the inner side of the edge forming part of the storage box protrude toward the inner side of the inner cavity of the storage box, so that the thickness of the edge part of the storage box is equal to that of the other parts of the storage box. The inclined ejector block can move obliquely upward toward the inner side of the rectangular insert when the product is ejected, so that the rectangular insert and the edge part are separated.

[0030] Specifically, the inner end surface of the bead forming block 7 and the bead forming groove 10 are both arc surfaces.

[0031] Specifically, the edge undercut inclined ejector demoulding mechanism 6 also includes an ejector plate 11 arranged at the lower side of the lower mold plate 2, and an inclined ejector rod 12 is hingedly arranged on the ejector plate 11, and the top end of the inclined ejector rod 12 is fixedly connected to the inclined ejector block 9 and the top end of the inclined ejector rod 12 is inclined to the side away from the edge forming groove 10. When the ejector plate moves upward, the inclined ejector rod can drive the inclined ejector block to move upward obliquely, and the top end of the inclined ejector rod 12 is inclined to the side away from the edge forming groove 10, so that the inclined ejector block can be separated from the edge when the product is ejected.

[0032] Specifically, three straight push rods 13 are fixedly connected to the top plate 11, and the tops of the three straight push rods 13 vertically penetrate the rectangular insert 4 and are flush with the upper end surface of the rectangular insert 4. The three straight push rods 13 are arranged on the side of the rectangular insert 4 away from the inclined push block 9. When the top plate moves upward, the three straight push rods can also apply a vertical upward thrust to the product so that the product can be ejected from the lower template. The three straight push rods are arranged on the side of the rectangular insert 4 away from the inclined push block 9 so that the force on both sides of the product when ejected is more uniform.

[0033] Specifically, a support block 14 with a rectangular cross section is protruded from the connection between the lower template 2 and the rectangular insert 4. The support block 14 can form a support plate with a rectangular cross section on the inner wall of the cavity in the storage box during injection molding to support the box cover used with the storage box.

[0034] Preferably, the rectangular insert 4 is detachably connected to the lower template 2 via a plurality of screws and can be easily disassembled, so that when the rectangular insert is damaged, only the rectangular insert needs to be replaced.

[0035] The working principle of the utility model is as follows: the molding cavity formed by the combination of the rectangular molding groove 3 and the rectangular insert can be injection molded to form the storage box body, the edge molding structure can directly mold an inwardly concave edge on the storage box body without subsequent processing, thereby improving the injection molding efficiency of the storage box body, and the edge inverted inclined ejection demoulding mechanism can move obliquely upward away from the edge molding structure 5 when the storage box body is ejected, thereby realizing the ejection of the storage box body;

[0036] The inner end surface of the edge forming block 7 is inserted into the molding cavity, so that a concave edge can be formed on the storage box body during injection molding of the storage box. The edge forming groove 10 can make the inner side of the edge forming part of the storage box bulge toward the inner side of the inner cavity of the storage box, so that the thickness of the edge part of the storage box is equal to that of the other parts of the storage box. The inclined ejector block can move obliquely upward toward the inner side of the rectangular insert when the product is ejected, so that the rectangular insert and the edge part are separated. When the top plate moves upward, the inclined ejector block can be driven to move obliquely upward by the inclined ejector rod. The top end of the inclined ejector rod 12 is inclined toward the side away from the edge forming groove 10, so that the inclined ejector block can be separated from the edge part when the product is ejected. When the top plate moves upward, the three straight ejector rods can apply a vertical upward thrust to the product, so that the product can be ejected from the lower template. The three straight ejector rods are arranged on the side of the rectangular insert 4 away from the inclined ejector block 9, so that the force on both sides of the product is more uniform when it is ejected.

[0037] The support portion forming block 14 can form a support plate with a rectangular ring-shaped cross section on the inner wall of the cavity in the storage box during injection molding of the storage box, so as to support the box cover used in conjunction with the storage box.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although this article uses the upper template 1, lower template 2, rectangular molding groove 3, rectangular insert 4, edge molding structure 5, edge inverted inclined ejector mechanism 6, edge molding block 7, molding block mounting groove 8, inclined ejector block 9, edge molding groove 10, top plate 11, inclined ejector rod 12, straight ejector rod 13, support part molding block 14, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A storage box injection mold with an edge-undercut inclined top demoulding mechanism, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: A molding cavity is provided between the upper mold plate (1) and the lower mold plate (2); an inwardly recessed rectangular molding groove (3) is provided on the upper mold plate (1); a rectangular insert (4) is protrudingly provided on the lower mold plate (2) and can be inserted into the rectangular molding groove (3); the molding cavity is formed between the rectangular insert (4) and the rectangular molding groove (3); a bead molding structure (5) connected to the molding cavity is also provided between the upper mold plate (1) and the lower mold plate (2); a bead undercut inclined ejection mechanism (6) is provided at the corresponding position of the rectangular insert (4) and the bead molding structure (5).

2. The storage box injection mold with an edge-undercut and inclined top demoulding mechanism according to claim 1, characterized in that: The edge forming structure (5) comprises an edge forming block (7) protruding from the lower template (2) and a forming block mounting groove (8) recessed inwardly from the upper template (1); the inner end surface of the edge forming block (7) is inserted into the forming cavity.

3. The storage box injection mold with an edge-undercut and inclined top demoulding mechanism according to claim 2, characterized in that: The edge undercut inclined ejector mechanism (6) comprises an inclined ejector block (9) embedded in the rectangular insert (4) and slidably matched with the rectangular insert (4), the upper end face and the outer side face of the inclined ejector block (9) are respectively flush with the upper end face and the side face of the rectangular insert (4), and the outer side face of the inclined ejector block (9) is arranged corresponding to the edge forming block (7).

4. The storage box injection mold with an edge-undercut inclined top demoulding mechanism according to claim 3, characterized in that: The outer side surface of the inclined top block (9) is also provided with an edge forming groove (10) which is recessed inwards.

5. The storage box injection mold with an edge-undercut and inclined top demoulding mechanism according to claim 4, characterized in that: The inner end surface of the bead forming block (7) and the bead forming groove (10) are both cambered surfaces.

6. The storage box injection mold with an edge-undercut inclined top demoulding mechanism according to claim 4, characterized in that: The edge undercut inclined ejector demoulding mechanism (6) further comprises an ejector plate (11) arranged on the lower side of the lower mold plate (2), and an inclined ejector rod (12) is hingedly arranged on the ejector plate (11), and the top end of the inclined ejector rod (12) is fixedly connected to the inclined ejector block (9), and the top end of the inclined ejector rod (12) is inclined toward a side away from the edge forming groove (10).

7. The storage box injection mold with an edge-undercut inclined top demoulding mechanism according to claim 6, characterized in that: The top plate (11) is also fixedly connected with three straight push rods (13), the tops of the three straight push rods (13) vertically penetrate the rectangular insert (4) and are flush with the upper end surface of the rectangular insert (4).

8. The storage box injection mold with an edge-undercut inclined top demoulding mechanism according to claim 7, characterized in that: Three straight push rods (13) are arranged on a side of the rectangular insert (4) away from the inclined push block (9).

9. The storage box injection mold with an edge-undercut inclined top demoulding mechanism according to claim 8, characterized in that: A support portion forming block (14) having a rectangular ring-shaped cross section is protrudingly provided at the connection between the lower template (2) and the rectangular insert (4).

10. The storage box injection mold with an edge-undercut inclined top demoulding mechanism according to claim 9, characterized in that: The rectangular insert (4) is detachably connected to the lower template (2) via a plurality of screws.

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