Injection mold for can cover of deep-cavity municipal garbage can

Abstract

The utility model provides an injection mold for a can cover of a deep-cavity municipal garbage can, and belongs to the technical field of molds. The utility model discloses a handle groove forming mold which comprises an upper mold plate and a lower mold plate, a forming cavity is arranged between the upper mold plate and the lower mold plate, an injection molding mechanism is further arranged on the lower side of the lower mold plate, handle groove forming mechanisms are symmetrically arranged on the two sides of the head of the lower mold plate, and a hinge part one-time forming mechanism is arranged at the tail of the lower mold plate. Glue can be fed into the forming cavity from the lower side of the barrel cover through the injection molding mechanism arranged on the lower side of the lower mold plate, so that a sprue can be formed in the inner surface of the barrel cover to reduce the influence of a glue opening on the quality of the outer surface of the barrel cover, and grip grooves used for turning over the barrel cover can be formed in the two sides of the head of the barrel cover through the grip groove forming mechanism. The hinged part one-time forming mechanism can be used for forming a hinged plate with a connecting hole at the tail part of the barrel cover at one time, and later processing is not needed, so that the production efficiency of the barrel cover can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to an injection mold for the lid of a deep - cavity municipal garbage can. Background Art

[0002] The lid of a garbage can is generally formed by injection molding. The lid of the garbage can and the body of the garbage can are generally rotationally matched. Therefore, when the lid is produced, a hinge plate for installing a rotating shaft needs to be formed on the lid. In the prior art, after the lid of the garbage can is injection - molded, a connecting hole for installing the rotating shaft needs to be drilled on the hinge plate through post - drilling processing, resulting in low production efficiency.

[0003] For example, a Chinese patent discloses a core - pulling mechanism for the connecting hole of the lid of a plastic garbage can mold [Application No.: 201120359512.9], which includes an upper composite plate and a lower composite plate of the mold. A fixed template is connected under the upper composite plate, a cavity insert is installed under the fixed template, a moving template is installed on the lower composite plate, a core insert is installed on the moving template, and a mold cavity is formed between the core insert and the cavity insert. There is a formed garbage can in the mold cavity. A pair of lid connecting holes are formed on the barrel body at the mouth of the garbage can. The characteristics are that core - pulling oil cylinders are respectively installed on the outer walls on both sides of the moving template, the piston rods of the core - pulling oil cylinders are connected to core - pulling cores, and the core - pulling cores pass through the moving template and are matched with the connecting holes. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an injection mold for the lid of a deep - cavity municipal garbage can aiming at the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An injection mold for the lid of a deep - cavity municipal garbage can includes an upper template and a lower template. A molding cavity is arranged between the upper template and the lower template. An injection mechanism is further arranged on the lower side of the lower template. Gripping - groove forming mechanisms are symmetrically arranged on both sides of the head of the lower template, and a hinge - part primary - forming mechanism is arranged at the tail of the lower template.

[0007] In the above-mentioned injection mold for the lid of a deep-cavity municipal trash can, the one-time forming mechanism of the hinge part includes a first hinge plate static forming block protruding from the tail of the lower template, two second hinge plate static forming blocks, and two third hinge plate static forming blocks. The first hinge plate static forming block is arranged at the center of the tail of the lower template. The two second hinge plate static forming blocks and the two third hinge plate static forming blocks are symmetrically arranged on both sides of the first hinge plate static forming block. The second hinge plate static forming block is located between the first hinge plate static forming block and the third hinge plate static forming block. There is a first hinge plate connection hole forming structure between the second hinge plate static forming block and the first hinge plate static forming block, and a second hinge plate connection hole forming structure between the second hinge plate static forming block and the third hinge plate static forming block. On the side of the third hinge plate static forming block away from the second hinge plate static forming block, there is also a third hinge plate connection hole forming structure.

[0008] In the above-mentioned injection mold for the lid of a deep-cavity municipal trash can, the first hinge plate connection hole forming structure includes a first hinge plate moving forming block. There is a first hinge plate forming gap between the first hinge plate moving forming block and the first hinge plate static forming block. On the first hinge plate moving forming block, a first connection hole forming block protruding and inserted into the first hinge plate forming gap and abutting against the first hinge plate static forming block is provided. The bottom end of the first hinge plate moving forming block is connected to the top plate arranged on the lower side of the lower template through a first inclined ejector rod.

[0009] In the above-mentioned injection mold for the lid of a deep-cavity municipal trash can, the top end of the first inclined ejector rod inclines towards the side away from the first hinge plate static forming block.

[0010] In the above-mentioned injection mold for the lid of a deep-cavity municipal trash can, the second hinge plate connection hole forming structure includes a second hinge plate moving forming block. There is a second hinge plate forming gap between the second hinge plate moving forming block and the third hinge plate static forming block. On the second hinge plate moving forming block, a second connection hole forming block protruding and inserted into the second hinge plate forming gap and abutting against the third hinge plate static forming block is provided. The bottom end of the second hinge plate moving forming block is connected to the top plate arranged on the lower side of the lower template through a second inclined ejector rod.

[0011] In the above-mentioned injection mold for the lid of a deep-cavity municipal trash can, the top end of the second inclined ejector rod inclines towards the side close to the first hinge plate static forming block.

[0012] In the above-mentioned injection mold for the lid of a deep cavity municipal trash can, the forming structure of the third hinge plate connection hole includes a first slider seat slidably connected to the lower template. The inner end of the first slider seat is fixedly connected with a third hinge plate moving forming block. There is a third hinge plate forming gap between the third hinge plate moving forming block and the third hinge plate static forming block. The third hinge plate moving forming block is provided with a protruding third connection hole forming block that is inserted into the third hinge plate forming gap and abuts against the third hinge plate static forming block.

[0013] In the above-mentioned injection mold for the lid of a deep cavity municipal trash can, the first ejector rod and the second ejector rod are hinged to the top plate.

[0014] In the above-mentioned injection mold for the lid of a deep cavity municipal trash can, the lower template is provided with a lid forming block protruding therefrom. The grip groove forming mechanism includes a grip groove forming groove recessed inwardly on the side of the lid forming block. The lower template is also slidably fitted with a second slider seat. The second slider seat is fixedly connected with a grip groove forming block horizontally inserted into the grip groove forming groove.

[0015] In the above-mentioned injection mold for the lid of a deep cavity municipal trash can, the injection mechanism includes an injection pipe vertically arranged with its top end vertically penetrating the lower template and connected to the forming cavity.

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

[0017] 1. The injection mechanism arranged on the lower side of the lower template can inject glue into the forming cavity from the lower side of the lid, so that the gate can be formed on the inner surface of the lid to reduce the influence of the gate on the quality of the outer surface of the lid. The grip groove forming mechanism can form grip grooves for flipping the lid on both sides of the lid head. The hinge part one-time forming mechanism can form a hinge plate with a connection hole at the tail of the lid at one time, without the need for later processing, thus improving the production efficiency of the lid.

[0018] 2. The first hinge plate connection hole forming structure cooperates with the first hinge plate static forming block to form a first hinge plate with a connection hole at the tail of the lid. The second hinge plate connection hole forming structure cooperates with the third hinge plate static forming block to form a second hinge plate with a connection hole at the tail of the lid. The third hinge plate connection hole forming structure cooperates with the third hinge plate static forming block to form a third hinge plate with a connection hole at the tail of the lid.

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

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

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

[0022] Figure 3 It is a sectional view of the lower template;

[0023] Figure 4 It is a schematic partial structure diagram of the present utility model.

[0024] In the figure, there are an upper template 1, a lower template 2, a grip groove forming mechanism 3, a hinge part one-time forming mechanism 4, a first hinge plate static forming block 5, a second hinge plate static forming block 6, a third hinge plate static forming block 7, a first hinge plate moving forming block 8, a first connection hole forming block 9, a first inclined ejector rod 10, a top plate 11, a second hinge plate moving forming block 12, a second connection hole forming block 13, a second inclined ejector rod 14, a first slider seat 15, a third hinge plate moving forming block 16, a third connection hole forming block 17, a bucket lid forming block 18, a grip groove forming groove 19, a second slider seat 20, a grip groove forming block 21, and an injection pipe 22. Specific embodiments

[0025] As Figures 1 - 4 shown, an injection mold for a deep cavity municipal waste bin bucket lid includes an upper template 1 and a lower template 2. A forming cavity is provided between the upper template 1 and the lower template 2. An injection mechanism is further provided on the lower side of the lower template 2. Grip groove forming mechanisms 3 are symmetrically arranged on both sides of the head of the lower template 2. A hinge part one-time forming mechanism 4 is arranged at the tail of the lower template 2.

[0026] In the present utility model, the injection mechanism provided on the lower side of the lower template can inject glue into the forming cavity from the lower side of the bucket lid, so that the gate can be formed on the inner surface of the bucket lid to reduce the influence of the gate on the quality of the outer surface of the bucket lid. The grip groove forming mechanism 3 can form grip grooves for flipping the bucket lid on both sides of the head of the bucket lid. The hinge part one-time forming mechanism 4 can form a hinge plate with connection holes at one time at the tail of the bucket lid, without the need for later processing, thus improving the production efficiency of the bucket lid.

[0027] Specifically, the one-time forming mechanism 4 of the hinge part includes a first hinge plate static forming block 5 protruding from the tail of the lower template 2, two second hinge plate static forming blocks 6, and two third hinge plate static forming blocks 7. The first hinge plate static forming block 5 is arranged in the center of the tail of the lower template 2. The two second hinge plate static forming blocks 6 and the two third hinge plate static forming blocks 7 are symmetrically arranged on both sides of the first hinge plate static forming block 5. The second hinge plate static forming block 6 is located between the first hinge plate static forming block 5 and the third hinge plate static forming block 7. There is a first hinge plate connection hole forming structure between the second hinge plate static forming block 6 and the first hinge plate static forming block 5, and a second hinge plate connection hole forming structure between the second hinge plate static forming block 6 and the third hinge plate static forming block 7. On the side of the third hinge plate static forming block 7 away from the second hinge plate static forming block 6, there is also a third hinge plate connection hole forming structure. The first hinge plate connection hole forming structure, in cooperation with the first hinge plate static forming block 5, can form a first hinge plate with a connection hole at the tail of the bucket lid. The second hinge plate connection hole forming structure, in cooperation with the third hinge plate static forming block 7, can form a second hinge plate with a connection hole at the tail of the bucket lid. The third hinge plate connection hole forming structure, in cooperation with the third hinge plate static forming block 7, can form a third hinge plate with a connection hole at the tail of the bucket lid.

[0028] Specifically, as shown in Figures 2 - 4 Figure, the first hinge plate connection hole forming structure includes a first hinge plate moving forming block 8. There is a first hinge plate forming gap between the first hinge plate moving forming block 8 and the first hinge plate static forming block 5. A first connection hole forming block 9 that protrudes from the first hinge plate moving forming block 8 and inserts into the first hinge plate forming gap and abuts against the first hinge plate static forming block 5 is provided on the first hinge plate moving forming block 8. The bottom end of the first hinge plate moving forming block 8 is connected to a top plate 11 arranged on the lower side of the lower template 2 through a first inclined ejector rod 10. The top end of the first inclined ejector rod 10 inclines towards the side away from the first hinge plate static forming block 5. The first hinge plate forming gap can form a first hinge plate at the tail of the trash can lid during injection molding. The first connection hole forming block on the first hinge plate moving forming block 8 can form a connection hole on the first hinge plate in one-time molding without subsequent processing. When the lid is ejected after molding, the upward movement of the top plate 11 can drive the first hinge plate moving forming block 8 to move obliquely upward away from the first hinge plate static forming block 5 through the first inclined ejector rod 10, so that the first connection hole forming block can be separated from the first hinge plate while the lid is ejected.

[0029] Specifically, as shown in Figures 2 - 4As shown in the figure, the forming structure of the second hinge plate connection hole includes a second hinge plate moving forming block 12. There is a second hinge plate forming gap between the second hinge plate moving forming block 12 and the third hinge plate static forming block 7. A second connection hole forming block 13 that protrudes from the second hinge plate moving forming block 12 and inserts into the second hinge plate forming gap and abuts against the third hinge plate static forming block 7 is provided. The bottom end of the second hinge plate moving forming block 12 is connected to a top plate 11 provided on the lower side of the lower template 2 through a second inclined ejector rod 14. The top end of the second inclined ejector rod 14 inclines towards the side close to the first hinge plate static forming block 5. The second hinge plate forming gap can form a second hinge plate at the tail of the trash can lid during injection molding. The second connection hole forming block on the second hinge plate moving forming block can form a connection hole on the second hinge plate at one time without subsequent processing. When the lid is ejected after molding, the upward movement of the top plate 11 can drive the second hinge plate moving forming block to move obliquely upward towards the side close to the first hinge plate static forming block 5 through the second inclined ejector rod, so that the second connection hole forming block can be separated from the second hinge plate while the lid is ejected.

[0030] Specifically, the forming structure of the third hinge plate connection hole includes a first slider seat 15 slidably connected to the lower template 2. A third hinge plate moving forming block 16 is fixedly connected to the inner end of the first slider seat 15. There is a third hinge plate forming gap between the third hinge plate moving forming block 16 and the third hinge plate static forming block 7. A third connection hole forming block 17 that protrudes from the third hinge plate moving forming block 16 and inserts into the third hinge plate forming gap and abuts against the third hinge plate static forming block 7 is provided. The first inclined ejector rod 10 and the second inclined ejector rod 14 are hinged to the top plate 11. The third hinge plate forming gap can form a third hinge plate at the tail of the trash can lid during injection molding. The third connection hole forming block on the third hinge plate moving forming block can form a connection hole on the third hinge plate at one time without subsequent processing. Before the product is ejected, sliding the first slider seat 15 can separate the third connection hole forming block 17 from the third hinge plate.

[0031] Specifically, a lid forming block 18 protrudes from the lower template 2. The grip groove forming mechanism 3 includes a grip groove forming groove 19 recessed inwardly on the side of the lid forming block 18. A second slider seat 20 is also slidably fitted on the lower template 2. A grip groove forming block 21 that horizontally inserts into the grip groove forming groove 19 is fixedly connected to the second slider seat 20. The grip groove forming groove 19 on the side of the lid forming block 18 and the grip groove forming block 21 inserted into the grip groove forming groove 19 can form grip grooves on both sides of the lid. After the product is injection molded, sliding the second slider seat 20 can separate the grip groove forming block 21 from the product.

[0032] Specifically, the injection molding mechanism includes an injection molding tube 22 which is vertically arranged and whose top vertically penetrates the lower template 2 and is connected to the molding cavity. Through the injection molding tube, glue can be fed into the molding cavity from the bottom of the molding cavity.

[0033] The working principle of the present utility model is as follows: The injection molding mechanism arranged on the lower side of the lower template can feed glue into the molding cavity from the lower side of the bucket lid, so that the gate can be formed on the inner surface of the bucket lid to reduce the influence of the gate on the quality of the outer surface of the bucket lid. The grip groove forming mechanism 3 can form grip grooves for flipping the bucket lid on both sides of the head of the bucket lid. The hinge part one-time forming mechanism 4 can form a hinge plate with a connection hole at one time at the tail of the bucket lid, without the need for later processing, thus improving the production efficiency of the bucket lid;

[0034] The first hinge plate connection hole forming structure and the first hinge plate static forming block 5 can form a first hinge plate with a connection hole at the tail of the bucket lid. The second hinge plate connection hole forming structure and the third hinge plate static forming block 7 can form a second hinge plate with a connection hole at the tail of the bucket lid. The third hinge plate connection hole forming structure and the third hinge plate static forming block 7 can form a third hinge plate with a connection hole at the tail of the bucket lid. The first hinge plate forming gap can form a first hinge plate at the tail of the trash can bucket lid during injection molding. The first connection hole forming block on the first hinge plate moving forming block 8 can form a connection hole on the first hinge plate at one time, without the need for later processing. When the bucket lid is ejected after molding, the top plate 11 moves upward, and can drive the first hinge plate moving forming block 8 to move obliquely upward away from the first hinge plate static forming block 5 through the first inclined ejector rod 10, so that the first connection hole forming block can be separated from the first hinge plate while the bucket lid is ejected. The second hinge plate forming gap can form a second hinge plate at the tail of the trash can bucket lid during injection molding. The second connection hole forming block on the second hinge plate moving forming block can form a connection hole on the second hinge plate at one time, without the need for later processing. When the bucket lid is ejected after molding, the top plate 11 moves upward, and can drive the second hinge plate moving forming block to move obliquely upward towards the first hinge plate static forming block 5 through the second inclined ejector rod, so that the second connection hole forming block can be separated from the second hinge plate while the bucket lid is ejected. The third hinge plate forming gap can form a third hinge plate at the tail of the trash can bucket lid during injection molding. The third connection hole forming block on the third hinge plate moving forming block can form a connection hole on the third hinge plate at one time, without the need for later processing. Before the product is ejected, sliding the first slider seat 15 can separate the third connection hole forming block 17 from the third hinge plate;

[0035] The grip groove forming groove 19 on the side of the bucket lid forming block 18 and the grip groove forming block 21 inserted into the grip groove forming groove 19 can form grip grooves on both sides of the bucket lid. After the product is injection molded, sliding the second slider seat 20 can separate the grip groove forming block 21 from the product. Through the injection molding tube, glue can be fed into the molding cavity from the bottom of the molding cavity.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0037] Although terms such as upper template 1, lower template 2, grip groove forming mechanism 3, hinge part primary forming mechanism 4, first hinge plate static forming block 5, second hinge plate static forming block 6, third hinge plate static forming block 7, first hinge plate moving forming block 8, first connection hole forming block 9, first inclined ejector rod 10, top plate 11, second hinge plate moving forming block 12, second connection hole forming block 13, second inclined ejector rod 14, first slider seat 15, third hinge plate moving forming block 16, third connection hole forming block 17, barrel cover forming block 18, grip groove forming groove 19, second slider seat 20, grip groove forming block 21, injection pipe 22, etc. are used more frequently herein, using these terms is only for more conveniently describing and explaining the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A deep cavity municipal trash can lid injection mold, 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 injection molding mechanism is also provided on the lower side of the lower mold plate (2), handle groove molding mechanisms (3) are symmetrically provided on both sides of the head of the lower mold plate (2), and a hinge part one-time molding mechanism (4) is provided at the tail of the lower mold plate (2).

2. The deep cavity municipal trash can lid injection mold according to claim 1, characterized in that: The hinged part one-step forming mechanism (4) comprises a No. 1 hinged plate static forming block (5) protruding from the rear of the lower template (2), two No. 2 hinged plate static forming blocks (6) and two No. 3 hinged plate static forming blocks (7), wherein the No. 1 hinged plate static forming block (5) is arranged in the middle of the rear of the lower template (2), the two No. 2 hinged plate static forming blocks (6) and the two No. 3 hinged plate static forming blocks (7) are symmetrically arranged on both sides of the No. 1 hinged plate static forming block (5), and the No. 2 hinged plate static forming blocks (6) and the two No. 3 hinged plate static forming blocks (7) are symmetrically arranged on both sides of the No. 1 hinged plate static forming block (5). The molding block (6) is located between the first hinge plate static molding block (5) and the third hinge plate static molding block (7); a first hinge plate connection hole molding structure is provided between the second hinge plate static molding block (6) and the first hinge plate static molding block (5); a second hinge plate connection hole molding structure is provided between the second hinge plate static molding block (6) and the third hinge plate static molding block (7); and a third hinge plate connection hole molding structure is also provided on the side of the third hinge plate static molding block (7) away from the second hinge plate static molding block (6).

3. The deep cavity municipal trash can lid injection mold according to claim 2, characterized in that: The No. 1 hinged plate connecting hole forming structure comprises a No. 1 hinged plate dynamic forming block (8), a No. 1 hinged plate forming gap is provided between the No. 1 hinged plate dynamic forming block (8) and the No. 1 hinged plate static forming block (5), a No. 1 connecting hole forming block (9) is protruded from the No. 1 hinged plate dynamic forming block (8) and is inserted into the No. 1 hinged plate forming gap and abuts against the No. 1 hinged plate static forming block (5), and the bottom end of the No. 1 hinged plate dynamic forming block (8) is connected to a top plate (11) provided on the lower side of the lower template (2) through a No. 1 inclined top rod (10).

4. The deep cavity municipal trash can lid injection mold according to claim 3, characterized in that: The top end of the No. 1 inclined push rod (10) is inclined toward a side away from the No. 1 hinged plate static forming block (5).

5. The deep cavity municipal trash can lid injection mold according to claim 4, characterized in that: The No. 2 hinged plate connection hole forming structure comprises a No. 2 hinged plate dynamic forming block (12), a No. 2 hinged plate forming gap is provided between the No. 2 hinged plate dynamic forming block (12) and the No. 3 hinged plate static forming block (7), a No. 2 connection hole forming block (13) is protrudingly provided on the No. 2 hinged plate dynamic forming block (12) and is inserted into the No. 2 hinged plate forming gap and abuts against the No. 3 hinged plate static forming block (7), and the bottom end of the No. 2 hinged plate dynamic forming block (12) is connected to a top plate (11) provided on the lower side of the lower template (2) through a No. 2 inclined top rod (14).

6. The deep cavity municipal trash can lid injection mold according to claim 5, characterized in that: The top end of the second inclined push rod (14) is inclined toward the side close to the first hinge plate static forming block (5).

7. The deep cavity municipal trash can lid injection mold according to claim 6, characterized in that: The No. 3 hinged plate connection hole forming structure comprises a No. 1 slider seat (15) slidably connected to the lower template (2); the inner end of the No. 1 slider seat (15) is fixedly connected to the No. 3 hinged plate dynamic forming block (16); a No. 3 hinged plate forming gap is provided between the No. 3 hinged plate dynamic forming block (16) and the No. 3 hinged plate static forming block (7); and a No. 3 connection hole forming block (17) is protruded from the No. 3 hinged plate dynamic forming block (16) and is inserted into the No. 3 hinged plate forming gap and abuts against the No. 3 hinged plate static forming block (7).

8. The deep cavity municipal trash can lid injection mold according to claim 7, characterized in that: The first inclined push rod (10) and the second inclined push rod (14) are hinged to the top plate (11).

9. The deep cavity municipal trash can lid injection mold according to claim 1, characterized in that: A barrel cover forming block (18) is protrudingly provided on the lower template (2), and the handle groove forming mechanism (3) includes a handle groove forming groove (19) which is recessed inwardly and provided on the side of the barrel cover forming block (18). A second slider seat (20) is also slidably fitted on the lower template (2), and a handle groove forming block (21) which is horizontally inserted into the handle groove forming groove (19) is fixedly connected to the second slider seat (20).

10. The deep cavity municipal trash can lid injection mold according to claim 1, characterized in that: The injection molding mechanism comprises an injection molding tube (22) which is arranged vertically and has a top end which vertically penetrates the lower mold plate (2) and is connected to the molding cavity.

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