Die cutting assembly of injection mold

Abstract

The utility model discloses a die cutting assembly of an injection mold, which comprises a die cutting lifting block, and an inclined guide groove is formed in the die cutting lifting block; the annular die-cutting knife is detachably arranged at the bottom of the die-cutting lifting block; the positioning and fastening part comprises a fastening ring installed in the center of the bottom of the die cutting lifting block, a guide block arranged in the center of the top of the annular die cutting knife and a threaded groove formed in the outer wall of the annular die cutting knife, and a limiting groove allowing the guide block to be inserted therein is formed in the bottom of the die cutting lifting block; a threaded rod capable of being screwed into the threaded groove is arranged on the fastening ring; the annular die-cutting tool has the advantages that limitation during installation of the annular die-cutting tool is increased through the designed positioning and fastening part, the spliced annular die-cutting tool can be rapidly fixed, the splicing efficiency of the annular die-cutting tool is improved, and when the surface of the annular die-cutting tool is abraded, the annular die-cutting tool with the abraded surface can be rapidly detached.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold die-cutting technology, and specifically relates to a die-cutting component for injection molds. Background Technology

[0002] Injection mold die cutting can quickly and accurately cut materials into the required shapes, thereby improving production efficiency; reducing manual operation, lowering labor costs, and reducing material waste.

[0003] A die-cutting injection mold with a die-cutting structure is disclosed in patent CN208664251U. The mold includes an upper mold and a lower mold. The upper mold has a die-cutting mechanism, which includes a shovel block slide rail. A shovel block is slidably connected to the shovel block slide rail. An inclined shovel arm is fixed to one end of the shovel block near the center of the upper mold. The inclined shovel arm is inclined upward along the edge of the upper mold to the center. The die-cutting mechanism also includes a die-cutting guide post. A die-cutting lifting block is sleeved on the die-cutting guide post. The die-cutting lifting block has an inclined guide groove parallel to the inclined shovel arm. The inclined shovel arm is slidably connected in the inclined guide groove. An annular die-cutting blade is fixed to the bottom of the die-cutting lifting block. The annular die-cutting blade matches the die-cutting clearance hole.

[0004] Due to the special nature of circular die-cutting blades, they need to be replaced when their surface wears down. Replacement circular die-cutting blades are not conducive to quick positioning and fastening, which increases the time required for replacement. Utility Model Content

[0005] The purpose of this invention is to provide a die-cutting component for injection molds, which can quickly position and fasten the annular die-cutting blade, increasing the efficiency of replacing the annular die-cutting blade.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a die-cutting assembly for an injection mold, comprising...

[0007] A die-cutting lifting block, wherein an inclined guide groove is provided on the die-cutting lifting block;

[0008] A ring-shaped die-cutting blade, which is detachably mounted on the bottom of the die-cutting lifting block;

[0009] The positioning and fastening component includes a fastening ring installed at the center of the bottom of the die-cutting lifting block, a guide block located at the center of the top of the annular die-cutting blade, and a threaded groove formed on the outer wall of the annular die-cutting blade. The bottom of the die-cutting lifting block has a limiting groove for the guide block to be inserted into, and the fastening ring has a threaded rod that can be screwed into the threaded groove.

[0010] Preferably, it also includes a threaded hole inside the fastening ring, with one end of the threaded rod passing through the threaded hole.

[0011] Preferably, it also includes ribs symmetrically arranged on the inner side of the defined groove, and two of the ribs can abut against the side surface of the guide block.

[0012] Preferably, the rib has a trapezoidal structure, and the guide block and the annular die-cutting blade are an integral structure.

[0013] Preferably, it also includes an upper die core, the interior of which has a die-cutting clearance hole for the lifting and lowering of the annular die-cutting blade.

[0014] Preferably, it also includes a shovel block, and one end of the shovel block is provided with a slanted shovel arm that is slidably connected to the slanted guide groove.

[0015] Preferably, it also includes a die-cutting guide post, the die-cutting lifting block is sleeved on the outside of the die-cutting guide post, and the die-cutting lifting block can slide along the die-cutting guide post. The die-cutting guide post is provided with a stop post, and the stop post is provided with a buffer component.

[0016] Preferably, the buffer component includes a movable block, the bottom of the stop post is provided with a receiving groove, one end of the movable block is embedded in the receiving groove and the other end extends out of the receiving groove, and the bottom of the receiving groove is provided with a spring that is connected to the end face of the embedded end of the movable block.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The designed positioning and fastening components increase the constraints during the installation of the ring die-cutting blade, enabling quick fixation of spliced ​​ring die-cutting blades and improving the efficiency of ring die-cutting blade splicing. When the surface of the ring die-cutting blade is worn, the worn ring die-cutting blade can be quickly disassembled. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partial cross-sectional view of the present invention.

[0021] Figure 3 For the present utility model Figure 2 A magnified structural diagram of area A in the diagram;

[0022] Figure 4 For the present utility model Figure 2 A magnified structural diagram of region B in the diagram;

[0023] In the diagram: 1. Upper die core; 2. Die-cutting lifting block; 21. Angled guide groove; 22. Limiting groove; 3. Annular die-cutting blade; 31. Guide block; 32. Threaded groove; 4. Shovel block; 41. Angled shovel arm; 5. Die-cutting guide post; 51. Stop post; 510. Receiving groove; 6. Rib block; 7. Fastening ring; 8. Threaded rod; 9. Spring; 91. Movable block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figures 1-3 This is the first embodiment of the present invention, which provides a die-cutting assembly for an injection mold, including...

[0027] Die-cutting lifting block 2, with an inclined guide groove 21 provided on it, thus realizing the opening of the inclined guide groove 21;

[0028] The annular die-cutting blade 3 is installed at the bottom of the die-cutting lifting block 2. The annular die-cutting blade 3 cuts the plastic body. Cutting the plastic body before it cures can effectively reduce the stress generated during cutting, thereby effectively preventing the final injection molded product from being damaged.

[0029] The positioning and fastening components include a fastening ring 7 that is screwed to the center of the bottom of the die-cutting lifting block 2, ensuring a stable installation of the fastening ring 7; a guide block 31 located at the center of the top of the annular die-cutting blade 3; and a threaded groove 32 formed on the outer wall of the annular die-cutting blade 3, which adds the guide block 31 and the threaded groove 32. The bottom of the die-cutting lifting block 2 has a limiting groove 22 for the guide block 31 to be inserted, which increases the limitation of the insertion of the guide block 31. The fastening ring 7 is provided with a threaded rod 8 that can be screwed into the threaded groove 32. The threaded rod 8 can be screwed into the threaded groove 32 to quickly fix the spliced ​​annular die-cutting blade 3, improving the splicing efficiency of the annular die-cutting blade 3. When the surface of the annular die-cutting blade 3 is worn and needs to be disassembled, the threaded rod 8 is rotated to disengage from the threaded groove 32, allowing the worn annular die-cutting blade 3 to be disassembled.

[0030] In this embodiment, preferably, it also includes a threaded hole inside the fastening ring 7, which realizes the opening of the threaded hole. One end of the threaded rod 8 passes through the threaded hole, and the threaded rod 8 can rotate along the threaded hole, thereby moving closer to or away from the annular die-cutting blade 3.

[0031] In this embodiment, preferably, it also includes ribs 6 symmetrically arranged on the inner side of the limiting groove 22, thereby realizing the addition of ribs 6. The two ribs 6 can abut against the side surface of the guide block 31. When the guide block 31 is inserted into the limiting groove 22, it is pressed between the two ribs 6, thereby reinforcing the inserted guide block 31.

[0032] In this embodiment, preferably, the rib 6 has a trapezoidal structure, and the guide block 31 and the annular die-cutting blade 3 are an integral structure, which helps to increase the strength of the guide block 31 and the annular die-cutting blade 3.

[0033] In this embodiment, preferably, it also includes an upper mold core 1, the interior of which is provided with a die-cutting clearance hole for the annular die-cutting blade 3 to move up and down, that is, the annular die-cutting blade 3 can move up and down along the die-cutting clearance hole.

[0034] In this embodiment, preferably, it also includes a shovel block 4, and one end of the shovel block 4 is provided with a slanted shovel arm 41 that is slidably connected to the slanted guide groove 21. After the upper and lower molds of the injection mold are closed and molten plastic is injected into the upper and lower mold cores, the external drive mechanism drives the shovel block 4 to move. The slanted shovel arm 41 cooperates with the slanted guide groove 21 to drive the annular die cutter 3 to press down and cut the plastic body in the upper and lower mold cores.

[0035] In this embodiment, preferably, it also includes a die-cutting guide post 5, and a die-cutting lifting block 2 is sleeved on the outside of the die-cutting guide post 5, and the die-cutting lifting block 2 can slide along the die-cutting guide post 5, further increasing the convenience of use.

[0036] Example 2

[0037] Please see Figures 1-4 This is the second embodiment of the present invention, which is based on the previous embodiment, but differs in that:

[0038] A stop post 51 is provided on the die-cutting guide post 5, which realizes the addition of the stop post 51. A buffer component is provided on the stop post 51, which includes a movable block 91. A receiving groove 510 is opened at the bottom of the stop post 51, realizing the opening of the receiving groove 510. One end of the movable block 91 is embedded in the receiving groove 510, and the other end extends out of the receiving groove 510. A spring 9 is provided at the bottom of the receiving groove 510 and connected to the end face of the embedded end of the movable block 91, realizing the addition of the spring 9. When the die-cutting lifting block 2 slides along the die-cutting guide post 5 and abuts against the movable block 91, the movable block 91 is squeezed and compresses the spring 9. The spring 9 is used to return to its original position by extension and retraction, which increases the buffering performance.

[0039] It should be noted that the specific structure and working principle of the upper mold core 1, die-cutting lifting block 2, inclined guide groove 21, shovel block 4, inclined shovel arm 41, upper and lower mold cores, and external drive mechanism in this application have been disclosed in an injection mold with a die-cutting structure in publication number CN208664251U.

[0040] The working principle and usage process of this utility model: After the upper and lower molds of the injection mold are closed and molten plastic is injected into the upper and lower mold cores, the external drive mechanism drives the shovel block 4 to move. The inclined shovel arm 41 cooperates with the inclined guide groove 21 to drive the ring die cutter 3 to press down and cut the plastic body in the upper and lower mold cores.

[0041] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-cutting component for an injection mold, characterized in that: include Die-cutting lifting block (2), wherein the die-cutting lifting block (2) is provided with an inclined guide groove (21); A ring-shaped die-cutting blade (3) is detachably mounted on the bottom of the die-cutting lifting block (2); The positioning and fastening components include a fastening ring (7) installed at the bottom center of the die-cutting lifting block (2), a guide block (31) set at the top center of the annular die-cutting blade (3), and a threaded groove (32) opened on the outer wall of the annular die-cutting blade (3). The bottom of the die-cutting lifting block (2) is provided with a limiting groove (22) for the guide block (31) to be inserted. The fastening ring (7) is provided with a threaded rod (8) that can be screwed into the threaded groove (32).

2. The die-cutting component of an injection mold according to claim 1, characterized in that: It also includes a threaded hole inside the fastening ring (7), with one end of the threaded rod (8) passing through the threaded hole.

3. The die-cutting component of an injection mold according to claim 1, characterized in that: It also includes ribs (6) symmetrically arranged on the inner side of the limiting groove (22), and the two ribs (6) can abut against the side surface of the guide block (31).

4. The die-cutting assembly of an injection mold according to claim 3, characterized in that: The rib (6) has a trapezoidal structure, and the guide block (31) and the annular die-cutting blade (3) are an integral structure.

5. The die-cutting component of an injection mold according to claim 1, characterized in that: It also includes an upper mold core (1), the interior of which is provided with a die-cutting clearance hole for the annular die-cutting blade (3) to move up and down.

6. The die-cutting assembly of an injection mold according to claim 1, characterized in that: It also includes a shovel block (4), and one end of the shovel block (4) is provided with a sloping shovel arm (41) that is slidably connected to the sloping guide groove (21).

7. The die-cutting assembly of an injection mold according to claim 1, characterized in that: It also includes a die-cutting guide post (5), the die-cutting lifting block (2) is sleeved on the outside of the die-cutting guide post (5), and the die-cutting lifting block (2) can slide along the die-cutting guide post (5). A stop post (51) is provided on the die-cutting guide post (5), and a buffer component is provided on the stop post (51).

8. The die-cutting assembly of an injection mold according to claim 7, characterized in that: The buffer component includes a movable block (91), and the bottom of the stop post (51) is provided with a receiving groove (510). One end of the movable block (91) is embedded in the receiving groove (510), and the other end extends out of the receiving groove (510). The bottom of the receiving groove (510) is provided with a spring (9) that is connected to the end face of the embedded end of the movable block (91).

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