Injection molding mold for spring bolt machining

Abstract

The utility model discloses an injection molding die for processing a spring bolt, which comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die plate, the lower die assembly comprises a lower die plate, an upper die core is fixedly arranged in the upper die plate, and a lower die core is fixedly arranged in the lower die plate; a first through hole is formed in the spring bolt, a chamfer is arranged at the end of one side of the first through hole, a groove matched with the spring bolt in shape is formed between the upper die core and the lower die core, a sliding block assembly and an inclined top which are oppositely arranged are arranged on one pair of side faces of the groove, a cylinder used for forming the first through hole is arranged in the sliding block assembly, and the cylinder extends to the surface of the inclined top. And a boss for forming a chamfer at the first through hole is arranged at the joint of the pitched roof and the column body. According to the injection molding die for processing the spring bolt, the boss is arranged on the inclined top to form the chamfer at the first through hole of the spring bolt, and burrs are hidden by utilizing the chamfer, so that the burrs cannot protrude out of the side wall of a product, and the problem of reaming burrs is solved in the injection molding stage of the product.

Description

Technical Field

[0001] The utility model belongs to the field of molds, and in particular relates to an injection molding mold. Background Art

[0002] Figure 1 The product shown is a lock part of a smart seal, which is a lock tongue. A plurality of first through holes are provided in the product. Since the precision requirements for the first through holes are high, after being processed and formed by the injection molding mold, reaming is also required to improve the precision of the first through holes. When reaming, the reaming tool enters from one side of the first through hole, and the cutter head comes out from the other side. Previous actual reaming situations have shown that when the cutter head comes out from the other side, burrs will bulge out on that side, affecting the appearance of the product. In the prior art, generally, a deburring step is added afterwards, which increases the processing steps. Scraping burrs requires more labor costs and time. This defect is more obvious when mass production is carried out. There is currently no solution in the prior art that can solve the above-mentioned reaming burr problem during the product injection molding process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the above background technology and provide an injection molding mold for processing a lock tongue which can solve the problem of reaming burrs during product injection molding.

[0004] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0005] An injection molding mold for processing a lock tongue, the injection molding mold comprising an upper mold component and a lower mold component, the upper mold component comprising an upper mold plate, the lower mold component comprising a lower mold plate, an upper mold core is fixedly provided in the upper mold plate, and a lower mold core is fixedly provided in the lower mold plate; a first through hole is provided in the lock tongue, one side end of the first through hole is provided with a chamfer, a groove matching the shape of the lock tongue is provided between the upper mold core and the lower mold core, a pair of side surfaces of the groove are provided with a slider component and an inclined top arranged oppositely, the slider component is provided with a column for forming the first through hole, the column extends to the inclined top surface, and a boss for forming the chamfer at the first through hole is provided at the junction of the inclined top and the column.

[0006] In the above injection molding mold, preferably, a plurality of grooves matching the shape of the lock tongue are provided between the upper mold core and the lower mold core. By providing a plurality of grooves, a plurality of products can be formed at the same time. At the same time, a plurality of grooves can be provided, which is also an advantage brought by the specific chamfering molding method adopted in the utility model.

[0007] In the above-mentioned injection molding die, preferably, the upper mold assembly also includes an upper panel, a glue injection port is arranged at the center of the upper panel, the glue injection port is fixed to the upper panel by a positioning ring, and a runner system is connected to the lower end of the glue injection port.

[0008] In the above injection molding die, preferably, the runner system includes a main runner and a branch runner, the main runner is connected to the injection port, one end of the branch runner is connected to the main runner, and the other end is connected to the groove. The utility model can be used for injection molding of products through the runner system.

[0009] In the above injection molding die, preferably, the lower mold assembly is also provided with an ejector pin system for demoulding.

[0010] In the above injection molding die, preferably, a guide column system is provided between the upper mold assembly and the lower mold assembly.

[0011] In the utility model, the specific structures of the upper mold assembly, the lower mold assembly, etc. of the injection molding mold, the action mode of the slider assembly and the inclined top, the mold opening and closing operation, the demoulding operation, etc. can all adopt existing conventional means.

[0012] After the traditional lock tongue is processed by injection molding, it is still necessary to improve the accuracy of the first through hole by reaming. When reaming, burrs will bulge out, affecting the appearance of the product, and it is necessary to increase the step of scraping the burrs, which requires more labor costs and time. In the utility model, a boss is set on the inclined top to form a chamfer at the first through hole of the lock tongue. When the reaming tool is used for processing, the reaming tool enters from the side where the chamfer is not set, and then comes out from the side where the chamfer is set. The burrs will first fill the chamfer, and the chamfer is used to hide the burrs, so that the burrs will not protrude from the side wall of the product, and there is no need to scrape the burrs (the actual application of a large number of products shows that burrs at the chamfer do not affect the use of the product). The problem is solved at the injection molding stage of the product. At the same time, in the utility model, the chamfer is formed by changing the inclined top (rather than the slider), so that the mold arrangement is more compact and more mold cavities can be manufactured.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] The utility model provides an injection molding die for processing a lock tongue, by arranging a boss on an inclined top to form a chamfer at the first through hole of the lock tongue, when a reaming tool is used for processing, the reaming tool enters from a side where the chamfer is not set, and then comes out from a side where the chamfer is set, burrs will first fill the chamfer, and the chamfer is used to hide the burrs, so that the burrs will not protrude from the side wall of the product, and the reaming burr problem is solved in the product injection molding stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the lock tongue of the smart seal.

[0017] Figure 2 Schematic diagram of the structure of the injection molding die used for processing the lock tongue in the embodiment.

[0018] Figure 3 for Figure 2 Top view of the .

[0019] Figure 4 for Figure 3 Sectional view of the BB plane.

[0020] Figure 5 It is a schematic structural diagram of the injection molding die for processing the lock tongue in the embodiment after part of the upper mold assembly is hidden.

[0021] Figure 6 It is a schematic diagram of the structure of the upper mold core and the lower mold core in the embodiment.

[0022] Figure 7 for Figure 6 Schematic diagram of the structure after the upper mold core and the lower mold core are hidden.

[0023] Figure 8 It is a schematic diagram of the structure of the slider assembly and the inclined top.

[0024] Fig. 9 for Figure 8 Exploded diagram.

[0025] Fig.10 for Fig. 9 A partial enlarged view of middle A.

[0026] Legend

[0027] 1. Upper mold plate; 2. Lower mold plate; 3. Upper mold core; 4. Lower mold core; 5. Lock tongue; 50. First through hole; 51. Chamfer; 6. Slider assembly; 60. Column; 7. Slanted top; 70. Boss; 8. Upper panel; 9. Glue injection port; 10. Positioning ring; 11. Main flow channel; 12. Branch flow channel; 13. Ejector pin system; 14. Guide column system. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0029] It should be noted that when an element is described as being "fixed, fixed, connected or connected to" another element, it can be directly fixed, fixed, connected or connected to the other element, or it can be indirectly fixed, fixed, connected or connected to the other element through other intermediate connectors.

[0030] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model.

[0031] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0032] Example:

[0033] like Figure 1-Figure 10 As shown, the injection molding mold for processing the lock tongue of this embodiment includes an upper mold assembly and a lower mold assembly, the upper mold assembly includes an upper mold plate 1, and the lower mold assembly includes a lower mold plate 2. The upper mold core 3 is fixedly arranged in the upper mold plate 1, and the lower mold core 4 is fixedly arranged in the lower mold plate 2; Figure 1 As shown, a first through hole 50 is provided in the lock tongue 5, and a chamfer 51 is provided at one side end of the first through hole 50, a groove matching the shape of the lock tongue 5 is provided between the upper mold core 3 and the lower mold core 4, and a pair of side surfaces of the groove are provided with a slider assembly 6 and a slanted top 7 arranged oppositely, and a column 60 for forming the first through hole 50 is provided in the slider assembly 6, and the column 60 extends to the surface of the slanted top 7, and a boss 70 for forming the chamfer 51 at the first through hole 50 is provided at the junction of the slanted top 7 and the column 60.

[0034] In this embodiment, two grooves matching the shapes of the locking tongues 5 are provided between the upper mold core 3 and the lower mold core 4, so that the two locking tongues 5 can be formed at the same time.

[0035] In this embodiment, the upper mold assembly also includes an upper panel 8, a glue injection port 9 is provided at the center of the upper panel 8, the glue injection port 9 is fixed to the upper panel 8 by a positioning ring 10, and the lower end of the glue injection port 9 is connected to the flow channel system.

[0036] In this embodiment, the flow channel system includes a main flow channel 11 and a branch flow channel 12 . The main flow channel 11 is connected to the injection port 9 . One end of the branch flow channel 12 is connected to the main flow channel 11 , and the other end is connected to the groove.

[0037] In this embodiment, the lower mold assembly is further provided with an ejector pin system 13 for demoulding.

[0038] In this embodiment, a guide column system 14 is provided between the upper mold assembly and the lower mold assembly.

[0039] The injection molding die for processing the lock tongue of the present embodiment forms a chamfer 51 at the first through hole 50 of the lock tongue 5 by setting a boss 70 on the inclined top 7. When processing with a reaming tool, the reaming tool enters from the side where the chamfer 51 is not set, and then comes out from the side where the chamfer 51 is set. The burrs will first fill the chamfer 51, and the chamfer 51 is used to hide the burrs so that the burrs will not protrude from the side wall of the product. The reaming burr problem is solved in the product injection molding stage, and the subsequent burr scraping operation can be omitted, saving production steps and production time.

[0040] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An injection molding mold for processing a lock tongue, the injection molding mold comprising an upper mold assembly and a lower mold assembly, the upper mold assembly comprising an upper mold plate (1), the lower mold assembly comprising a lower mold plate (2), an upper mold core (3) being fixedly arranged in the upper mold plate (1), and a lower mold core (4) being fixedly arranged in the lower mold plate (2); characterized in that: The lock tongue (5) is provided with a first through hole (50), and a chamfer (51) is provided at one end of the first through hole (50). A groove matching the outer shape of the lock tongue (5) is provided between the upper mold core (3) and the lower mold core (4), and a pair of side surfaces of the groove are provided with a slider assembly (6) and a sloping top (7) arranged oppositely. The slider assembly (6) is provided with a column (60) for forming the first through hole (50), and the column (60) extends to the surface of the sloping top (7), and a boss (70) for forming the chamfer (51) at the first through hole (50) is provided at the junction of the sloping top (7) and the column (60).

2. The injection molding die according to claim 1, characterized in that: A plurality of grooves matching the outer shape of the locking tongue (5) are provided between the upper mold core (3) and the lower mold core (4).

3. The injection molding die according to claim 1 or 2, characterized in that: The upper mold assembly also includes an upper panel (8), a glue injection port (9) is provided at the center of the upper panel (8), the glue injection port (9) is fixed to the upper panel (8) via a positioning ring (10), and the lower end of the glue injection port (9) is connected to a flow channel system.

4. The injection molding die according to claim 3, characterized in that: The flow channel system comprises a main flow channel (11) and a branch flow channel (12); the main flow channel (11) is connected to the glue injection port (9); one end of the branch flow channel (12) is connected to the main flow channel (11) and the other end is connected to the groove.

5. The injection molding die according to claim 1 or 2, characterized in that: The lower mold assembly is also provided with an ejector pin system (13) for demoulding.

6. The injection molding die according to claim 1 or 2, characterized in that: A guide column system (14) is provided between the upper die assembly and the lower die assembly.

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