Injection mold for thick-walled storage rack

Abstract

This utility model provides an injection mold for a thick-walled shelf, belonging to the field of mold technology. It includes an upper mold plate and a lower mold plate. The top surface of the lower mold plate has a recessed groove. A first forming block with a rectangular annular cross-section protrudes from the recessed groove. A first forming groove, formed by the first forming block, is formed in the middle of the recessed groove. The bottom of the upper mold plate has a protruding portion corresponding to the recessed groove. A second forming block, inserted into the first forming groove, protrudes from the middle of the protruding portion. Through the cooperation of the recessed groove, the first forming block, the protruding portion, and the second forming block, a shelf forming cavity and an outer edge forming portion are formed. An outer edge reinforcing plate forming structure and a shelf mounting portion forming structure are also provided, forming a reinforcing structure between the outer edge of the shelf and the main body, enhancing the outer edge strength, and simultaneously achieving precise forming of the shelf mounting portion.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor accessories and relates to an injection mold for a thick-walled shelf. Background Technology

[0002] Thick-walled shelves are generally injection molded. The outer side of the shelf has a downward-curved outer edge structure. The outer edge structure of the shelf produced by injection molding in the existing technology has low strength and is easily damaged.

[0003] For example, a Chinese patent discloses a shelf injection mold with a high-efficiency demolding structure [application number: 202320936605.6], which includes a shelf injection upper mold and a shelf injection lower mold. The shelf injection upper mold is provided with a shelf forming protrusion, and the shelf injection lower mold is provided with a shelf forming recess. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a thick-walled shelf injection mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A thick-walled shelf injection mold includes an upper mold plate and a lower mold plate. The lower mold plate has a recessed groove on its top surface. A first molding block with a rectangular cross-section protrudes from the recessed groove. A first molding groove formed by the first molding block is formed in the middle of the recessed groove. The bottom of the upper mold plate has an outward protrusion corresponding to the recessed groove. A second molding block is inserted into the first molding groove from the middle of the outward protrusion. A shelf molding cavity is formed between the second molding block and the first molding groove. A second molding groove is also recessed inward along the outer edge of the second molding block on the outward protrusion. The second molding groove is corresponding to the first molding block and the first molding block is inserted into the second molding groove. An outer edge molding part is formed between the top and outer wall of the first molding block and the bottom and outer inner wall of the second molding groove. An outer edge reinforcing plate molding structure is also provided on the first molding block. Four shelf mounting part molding structures are provided between the upper and lower mold plates. The four shelf mounting part molding structures are respectively located at the four corners of the second molding groove.

[0007] In the aforementioned thick-walled shelf injection mold, the depth of the first molding groove is greater than the depth of the sinking groove.

[0008] In the aforementioned thick-walled shelf injection mold, the outer edge reinforcing plate forming structure includes several reinforcing plate rib forming grooves recessed inward on the first forming block. The several reinforcing plate rib forming grooves are arranged along the circumference of the first forming block. The two sides of the reinforcing plate rib forming grooves penetrate the first forming block and are respectively connected to the shelf forming cavity and the outer edge forming part.

[0009] In the aforementioned thick-walled shelf injection mold, the shelf mounting part forming structure includes a lower mounting part forming groove recessed inward on the lower template and an upper mounting part forming groove recessed inward on the upper template. The lower mounting part forming groove is located at the outer corner of the first forming block, and the upper mounting part forming groove is located at the outer wall of the second forming groove.

[0010] In the aforementioned thick-walled shelf injection mold, a lower mounting part slot forming block protrudes from the lower mounting part forming groove, and an upper mounting part slot forming block protrudes from the upper mounting part forming groove. The top end of the lower mounting part slot forming block abuts against the bottom end of the upper mounting part slot forming block.

[0011] In the aforementioned thick-walled shelf injection mold, the upper outer wall of the upper mounting part slot forming block is provided with a mounting part positioning slot forming block.

[0012] In the above-mentioned thick-walled shelf injection mold, the lower mounting part slot forming block is integrally formed with the lower template; the upper template is detachably provided with a forming insert, and the upper mounting part slot forming block is located at the bottom of the forming insert and the upper mounting part slot forming block is integrally formed with the forming insert.

[0013] In the aforementioned thick-walled shelf injection mold, the bottom of the first molding groove is provided with a plurality of lower through-hole molding blocks, and the bottom of the second molding block is provided with a plurality of upper through-hole molding blocks corresponding to the lower through-hole molding blocks. The cross-sections of the upper through-hole molding blocks and the lower through-hole molding blocks are circular.

[0014] In the aforementioned thick-walled shelf injection mold, a lower limiting part that tilts downwards to the outside of the template is formed on the outer wall of the sink groove, and an upper limiting part corresponding to the lower limiting part is formed on the outer wall of the outward protrusion.

[0015] In the above-mentioned thick-walled shelf injection mold, the bottom of the sinking groove is also provided with a number of top blocks along the circumferential direction of the outer wall of the first molding block. The top blocks are embedded in the bottom of the sinking groove and the inner side of the top blocks abuts against the outer wall of the first molding block.

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

[0017] 1. Through the cooperation of structures such as the sinking groove, the first forming block, the outward protrusion, and the second forming block, a shelf forming cavity and an outer edge forming part are formed. An outer edge reinforcing plate forming structure and a shelf mounting part forming structure are set up, which can form a reinforcing structure between the outer edge of the shelf and the main body, enhance the strength of the outer edge, and at the same time achieve precise forming of the shelf mounting part.

[0018] 2. The reinforcing rib forming groove design of the outer edge reinforcing plate structure can form a reinforcing rib between the outer edge of the shelf and the main body, which significantly improves the strength of the outer edge structure of the shelf and solves the problem of easy damage to the outer edge of traditional shelves.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the present invention;

[0021] Figure 2 This is a structural diagram of the upper side of the upper template;

[0022] Figure 3 This is a sectional view of the molded structure of the shelf mounting section;

[0023] Figure 4 This is a structural diagram of the lower template;

[0024] Figure 5 This is a structural diagram of the upper template;

[0025] Figure 6 This is a schematic diagram of the structure of the molded insert. Detailed Implementation

[0026] like Figures 1-6As shown, a thick-walled shelf injection mold includes an upper mold plate 1 and a lower mold plate 2. The lower mold plate 2 has a recessed groove 3 on its top surface. A first molding block 4 with a rectangular cross-section protrudes from the recessed groove 3. A first molding groove 5, formed by the first molding block 4, is formed in the middle of the recessed groove 3. The lower mold plate 1 has an outward protrusion 6 at its bottom, corresponding to the recessed groove 3. A second molding block 7, inserted into the first molding groove 5, protrudes from the middle of the outward protrusion 6. A shelf molding cavity 8 is formed between the second molding block 7 and the first molding groove 5. The protrusion 6 is also recessed inward and has a second forming groove 9 along the outer edge of the second forming block 7. The second forming groove 9 is correspondingly provided with the first forming block 4 and the first forming block 4 is inserted into the second forming groove 9. An outer edge forming part 10 is formed between the top and outer wall of the first forming block 4 and the bottom and outer inner wall of the second forming groove 9. The first forming block 4 is also provided with an outer edge reinforcing plate forming structure 11. Four shelf mounting part forming structures 12 are provided between the upper template 1 and the lower template 2. The four shelf mounting part forming structures 12 are respectively provided at the four corners of the second forming groove 9.

[0027] In this utility model, the combination of the sinking groove, the first forming block, the outward protrusion, the second forming block and other structures forms the shelf forming cavity and the outer edge forming part. The outer edge reinforcing plate forming structure and the shelf mounting part forming structure are set up, which can form a reinforcing structure between the outer edge of the shelf and the main body, enhance the strength of the outer edge, and at the same time achieve precise forming of the shelf mounting part.

[0028] Specifically, the depth of the first forming groove 5 is greater than the depth of the sinking groove 3. The design that the depth of the first forming groove is greater than the depth of the sinking groove gives the shelf forming cavity a specific spatial structure, which helps to control the forming thickness and shape of the shelf, ensures the forming quality, and provides a better forming foundation for the outer edge reinforcement structure.

[0029] Specifically, the outer edge reinforcing plate forming structure 11 includes several inwardly recessed reinforcing rib forming grooves 13 disposed on the first forming block 4. These grooves 13 are arranged circumferentially around the first forming block 4, and both sides of each groove penetrate the first forming block 4 and are connected to the shelf forming cavity 8 and the outer edge forming part 10, respectively. The reinforcing rib forming groove design of the outer edge reinforcing plate forming structure enables the formation of reinforcing ribs between the outer edge of the shelf and the main body, significantly improving the structural strength of the shelf's outer edge and solving the problem of easy damage to the outer edge of traditional shelves.

[0030] Specifically, the shelf mounting section forming structure 12 includes a lower mounting section forming groove 14 recessed inward on the lower template 2 and an upper mounting section forming groove 15 recessed inward on the upper template 1. The lower mounting section forming groove 14 is located at the outer corner of the first forming block 4, and the upper mounting section forming groove 15 is located on the outer wall of the second forming groove 9. Through the setting of the lower and upper mounting section forming grooves, the shelf mounting section forming structure can precisely form the shelf mounting part, facilitating subsequent installation and fixing of the shelf, and improving the convenience and stability of shelf installation.

[0031] Specifically, a lower mounting part retaining groove forming block 16 protrudes from the lower mounting part forming groove 14, and an upper mounting part retaining groove forming block 17 protrudes from the upper mounting part forming groove 15. The top end of the lower mounting part retaining groove forming block 16 abuts against the bottom end of the upper mounting part retaining groove forming block 17. This abutting design of the lower and upper mounting part retaining groove forming blocks creates a retaining groove structure in the shelf mounting part, further enhancing the connection strength and stability of the shelf mounting part and improving the overall structural reliability of the shelf.

[0032] Specifically, an installation positioning groove forming block 18 protrudes from the upper outer wall of the upper mounting part slot forming block 17. The installation positioning groove forming block on the upper outer wall of the upper mounting part slot forming block provides a positioning function for the installation process of the shelf, which facilitates precise installation, reduces installation errors, and improves installation efficiency and accuracy.

[0033] Specifically, the lower mounting slot forming block 16 is integrally formed with the lower template 2; a forming insert 19 is detachably provided on the upper template 1, and the upper mounting slot forming block 17 is disposed at the bottom end of the forming insert 19 and is integrally formed with the forming insert 19. The design of the lower mounting slot forming block being integrally formed with the lower template, and the upper mounting slot forming block being detachably connected to the upper template through the forming insert, ensures the structural strength of the mold, facilitates mold maintenance and component replacement, reduces mold maintenance costs, and extends the mold's service life.

[0034] Specifically, the bottom of the first forming groove 5 has a plurality of lower through-hole forming blocks 20 protruding outwards, and the bottom of the second forming block 7 has a plurality of upper through-hole forming blocks 21 corresponding to the lower through-hole forming blocks 20 protruding outwards. The cross-sections of the upper through-hole forming blocks 21 and the lower through-hole forming blocks 20 are circular. The lower through-hole forming blocks at the bottom of the first forming groove cooperate with the upper through-hole forming blocks at the bottom of the second forming block to form through holes in the shelf, meeting the specific functional requirements of the shelf and enriching the usage scenarios of the shelf.

[0035] Specifically, a lower limiting part 22 inclined outward from the template 2 is formed on the outer wall of the sinking groove 3, and an upper limiting part 23 corresponding to the lower limiting part 22 is formed on the outer wall of the protruding part 6. The lower limiting part of the outer wall of the sinking groove and the upper limiting part of the outer wall of the protruding part are correspondingly set, which play a precise limiting role in the mold closing process, ensure the mold closing accuracy, ensure the accurate forming size of the shelf, and improve product quality.

[0036] Specifically, the bottom of the sinking trough 3 is also provided with a plurality of top blocks 24 circumferentially arranged along the outer side wall of the first forming block 4. The top blocks 24 are embedded in the bottom of the sinking trough 3 and the inner side of the top blocks 24 abuts against the outer side wall of the first forming block 4. The top blocks at the bottom of the sinking trough are embedded and abut against the outer side wall of the first forming block. After the shelf is formed, it is easy to eject the shelf from the mold and demold it, thereby improving demolding efficiency, reducing demolding difficulty, and reducing the risk of damage to the shelf.

[0037] The working principle of this utility model is as follows: through the cooperation of the sinking groove, the first forming block, the outward protrusion, the second forming block and other structures, a shelf forming cavity and an outer edge forming part are formed, and an outer edge reinforcing plate forming structure and a shelf mounting part forming structure are set, which can form a reinforcing structure between the outer edge of the shelf and the main body, enhance the strength of the outer edge, and at the same time achieve precise forming of the shelf mounting part;

[0038] The design of the first forming groove being deeper than the lower groove gives the shelf forming cavity a specific spatial structure, which helps to control the forming thickness and shape of the shelf, ensures forming quality, and provides a better forming foundation for the outer edge reinforcement structure. The reinforcing rib forming groove design of the outer edge reinforcement plate forming structure can form a reinforcing rib between the outer edge of the shelf and the main body, significantly improving the strength of the outer edge structure of the shelf and solving the problem of easy damage to the outer edge of traditional shelves.

[0039] The shelf mounting section forming structure, through the setting of the lower mounting section forming groove and the upper mounting section forming groove, can accurately form the shelf mounting part, which facilitates the subsequent installation and fixation of the shelf, and improves the convenience and stability of shelf installation. The design of the lower mounting section slot forming block and the upper mounting section slot forming block abutting each other, so that the shelf mounting section forming structure forms a slot structure, further enhancing the connection strength and stability of the shelf mounting part, and improving the overall structural reliability of the shelf. The mounting section positioning groove forming block on the upper side wall of the upper mounting section slot forming block provides a positioning function for the shelf installation process, which facilitates accurate installation, reduces installation errors, and improves installation efficiency and accuracy. The lower mounting section slot forming block is integrally formed with the lower template, and the upper mounting section slot forming block is detachably connected to the upper template through the design of forming inserts. This design not only ensures the strength of the mold structure, but also facilitates the maintenance and replacement of parts, reduces mold maintenance costs, and extends the service life of the mold.

[0040] The lower through-hole forming block at the bottom of the first forming groove cooperates with the upper through-hole forming block at the bottom of the second forming block to form through holes on the shelf, meeting the specific functional requirements of the shelf and enriching the usage scenarios of the shelf. The lower limit part of the outer wall of the recessed groove and the upper limit part of the outer wall of the protruding part are correspondingly set, which play a precise limiting role in the mold closing process, ensuring the mold closing accuracy, ensuring the accurate forming size of the shelf, and improving product quality. The top block at the bottom of the recessed groove is embedded and abuts against the outer wall of the first forming block. After the shelf is formed, it is easy to eject the shelf from the mold and demold, improving demolding efficiency, reducing demolding difficulty, and reducing the risk of damage to the shelf.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A thick-walled shelf injection mold comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, The lower template (2) has a recessed groove (3) on its top surface. A first forming block (4) with a rectangular cross-section protrudes from the recessed groove (3). A first forming groove (5) formed by the first forming block (4) is formed in the middle of the recessed groove (3). The bottom of the upper template (1) has an outward protrusion (6) corresponding to the recessed groove (3). A second forming block (7) inserted into the first forming groove (5) is protruding from the middle of the outward protrusion (6). A shelf forming cavity (8) is formed between the second forming block (7) and the first forming groove (5). The outward protrusion (6) also has an inwardly recessed part. A second forming groove (9) is provided along the outer side of the second forming block (7). The second forming groove (9) is provided in correspondence with the first forming block (4) and the first forming block (4) is inserted into the second forming groove (9). An outer edge forming part (10) is formed between the top and outer wall of the first forming block (4) and the bottom and outer inner wall of the second forming groove (9). An outer edge reinforcing plate forming structure (11) is also provided on the first forming block (4). Four shelf mounting part forming structures (12) are also provided between the upper template (1) and the lower template (2). The four shelf mounting part forming structures (12) are respectively provided at the four corners of the second forming groove (9).

2. The injection mold for the thick-walled shelf according to claim 1, characterized in that, The depth of the first forming groove (5) is greater than the depth of the sinking groove (3).

3. The injection mold for the thick-walled shelf according to claim 1, characterized in that, The outer edge reinforcing plate forming structure (11) includes several reinforcing plate rib forming grooves (13) recessed inward on the first forming block (4). The several reinforcing plate rib forming grooves (13) are arranged along the circumference of the first forming block (4). The reinforcing plate rib forming grooves (13) penetrate the first forming block (4) on both sides and are connected to the shelf forming cavity (8) and the outer edge forming part (10) respectively.

4. The injection mold for the thick-walled shelf according to claim 1, characterized in that, The shelf mounting part forming structure (12) includes a lower mounting part forming groove (14) recessed inward on the lower template (2) and an upper mounting part forming groove (15) recessed inward on the upper template (1). The lower mounting part forming groove (14) is located at the outer corner of the first forming block (4), and the upper mounting part forming groove (15) is located at the outer wall of the second forming groove (9).

5. The injection mold for the thick-walled shelf according to claim 4, characterized in that, The lower mounting part forming groove (14) is provided with a protruding lower mounting part slot forming block (16), and the upper mounting part forming groove (15) is provided with a protruding upper mounting part slot forming block (17). The top end of the lower mounting part slot forming block (16) abuts against the bottom end of the upper mounting part slot forming block (17).

6. The injection mold for the thick-walled shelf according to claim 5, characterized in that, The upper outer wall of the upper mounting part slot forming block (17) is provided with a mounting part positioning slot forming block (18).

7. The injection mold for the thick-walled shelf according to claim 5, characterized in that, The lower mounting slot forming block (16) is integrally formed with the lower template (2); the upper template (1) is detachably provided with a forming insert (19), and the upper mounting slot forming block (17) is provided at the bottom end of the forming insert (19) and the upper mounting slot forming block (17) is integrally formed with the forming insert (19).

8. The injection mold for the thick-walled shelf according to claim 1, characterized in that, The bottom of the first forming groove (5) is provided with a plurality of lower through hole forming blocks (20), and the bottom of the second forming block (7) is provided with a plurality of upper through hole forming blocks (21) corresponding to the lower through hole forming blocks (20). The cross sections of the upper through hole forming blocks (21) and the lower through hole forming blocks (20) are circular.

9. The injection mold for the thick-walled shelf according to claim 1, characterized in that, The outer wall of the sinking groove (3) is formed with a lower limiting part (22) that is inclined to the outside of the template (2), and the outer wall of the protruding part (6) is formed with an upper limiting part (23) that corresponds to the lower limiting part (22).

10. The injection mold for the thick-walled shelf according to claim 1, characterized in that, The bottom of the sinking trough (3) is also provided with a number of top blocks (24) along the circumferential direction of the outer side wall of the first molding block (4). The top blocks (24) are embedded in the bottom of the sinking trough (3) and the inner side of the top blocks (24) abuts against the outer side wall of the first molding block (4).

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