Internal cutting device for tooth supporting product mold formed by metal injection

Abstract

The utility model relates to the technical field of molds, in particular to a metal injection molding tooth supporting product mold internally-cutting device which comprises a moving block, an inclined block and a runner plate used for cutting off sprue materials, a T-shaped inclined groove used for installing the inclined block in a sliding mode is formed in the moving block, and the runner plate is installed on a first mold core plate of a mold in a sliding mode. Symmetrically-distributed protruding blocks are fixedly installed on the first mold core plate, a plurality of mold grooves used for forming supporting teeth are formed in the protruding blocks, and the two sides of the runner plate slide between the two protruding blocks. According to the internal cutting device disclosed by the utility model, the runner plate which synchronously translates along with the mold closing movement is designed, the runner plate is communicated with the mold groove during mold closing, and the runner plate can cut off the sprue in the process of guiding materials into the mold groove and then splitting the mold, so that the smoothness of the sprue is ensured, the normal mold splitting and closing operation of the mold is not interfered, and the processing stability of the mold is ensured; the production efficiency of the mold is improved, the production cost is reduced, the sprue excess material does not need to be manually flattened, and the quality of the tooth supporting product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an internal cutting device for a mold of a tooth-supporting product formed by metal injection molding. Background Art

[0002] MIM injection molding products are formed by mold processing. During the molding process, gates are inevitably generated. The normal process is to remove the gates of the blanks after injection by manual repair. The manual method is inefficient and has unstable quality.

[0003] In the prior art, the name disclosed in the application number: CN201210353555.5 is: a disc-shaped gate automatic cutting mold, which includes an upper fixed plate, a female mold pad, a gate molding insert fixed on the female mold pad, a female mold plate, a female mold molding insert, a male mold plate, a male mold molding insert, a male mold pad, an ejector plate, a lower fixed plate, an ejector rod, a push plate that can be movably mounted on the male mold molding insert up and down, a push rod connecting the ejector rod and the push plate, an ejector rod movably passed through the male mold molding insert, an opener and closer connected between the female mold plate and the male mold plate, a first latch assembly and a second latch assembly.

[0004] However, in the prior art, such as the automatic gate cutting mold mentioned in application number: CN201210353555.5, the structure is relatively complex, the gate cutting operation is complicated, and there is residue after the gate cutting. During the mold injection molding process, the efficiency of the mold production is reduced. Therefore, it is necessary to design a metal injection molding support tooth product mold internal cutting device. Utility Model Content

[0005] The utility model aims to provide a metal injection molding tooth-supporting product mold incision device to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A metal injection molded tooth-supporting product mold incision device comprises a moving block, an inclined block and a flow channel plate for cutting off gate materials. The moving block is provided with a T-shaped inclined groove for slidingly installing the inclined block.

[0008] The flow channel plate is slidably mounted on a core plate of the mold, and symmetrically distributed protrusions are fixedly mounted on the core plate. The protrusions are provided with a plurality of mold grooves for forming support teeth, and both sides of the flow channel plate slide between the two protrusions.

[0009] Furthermore, the mold includes template one and template two, core plate one is fixedly mounted on template one, core plate two is fixedly mounted on template two, and core plate two is connected to the nozzle.

[0010] Furthermore, positioning blocks 1 are fixedly installed on both sides of template 1, and positioning blocks 2 are fixedly installed on both sides of template 2, and positioning blocks 1 and 2 are snap-fitted.

[0011] Furthermore, a groove is provided in the template one, a moving block is slidably installed in the groove, and the inclined block is fixedly connected to the template two.

[0012] Furthermore, the material flow channel on the flow channel plate is connected to the mold groove.

[0013] Furthermore, a limiting plate for fixing the flow channel plate is fixedly installed at one end of the core plate.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model internal cutting device is designed with a runner plate that moves synchronously with the mold closing movement. The runner plate is connected with the mold groove during mold closing to introduce materials into the mold groove. Then, during the mold separation process, the runner plate will cut off the gate to ensure that the gate is smooth;

[0016] 2. The internal cutting device of the utility model has a simple structure and will not interfere with the normal opening and closing operation of the mold, thereby ensuring the processing stability of the mold, improving the mold production efficiency, reducing production costs, and eliminating the need for manual leveling of gate residues, thereby ensuring the quality of the support tooth product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the mold structure of the tooth-supporting product of the utility model;

[0019] Figure 2 It is a cross-sectional view of the mold of the tooth-supporting product of the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of the mold of the tooth-supporting product of the utility model;

[0021] Figure 4 This utility model Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 It is a schematic diagram of the flow channel plate structure of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] A metal injection molding tooth-supporting product mold incision device, such as Figure 1-5 As shown, the tooth-supporting product mold includes template 1 and template 2, a core assembly is installed between template 1 and template 2, the core assembly includes core plate 1 3 and core plate 2, core plate 1 3 is fixedly installed on template 1, core plate 2 is fixedly installed on template 2 2, and core plate 2 is connected to the nozzle to inject material into the core assembly.

[0025] Positioning blocks 11 are fixedly installed on both sides of the template 1, and positioning blocks 21 are fixedly installed on both sides of the template 2. The positioning blocks 11 and 21 are clamped together to perform mold closing positioning cooperation.

[0026] A groove 12 is provided in the template 1, and a moving block 13 is slidably installed in the groove 12. A T-shaped inclined groove 14 is provided on the moving block 13, and an inclined block 22 is slidably installed in the T-shaped inclined groove 14. The inclined block 22 is fixedly connected to the template 2 2. When the template 1 and the template 2 2 are separated, the inclined block 22 slides with the T-shaped inclined groove 14 to control the moving block 13 to move toward the outside of the template 1.

[0027] One end of the moving block 13 is fixedly connected to a flow channel plate 15, on which a material flow channel is provided to guide the injected material. The flow channel plate 15 is slidably mounted on a core plate 3, on which symmetrically distributed protrusions 31 are fixedly mounted, a plurality of mold grooves are provided on the protrusions 31, and support teeth 32 are formed in the mold grooves. Both sides of the flow channel plate 15 slide and abut between two protrusions 31.

[0028] The material flow channel on the runner plate 15 is connected with the mold groove, and the material is poured into the mold groove to form the support teeth 32. When the runner plate 15 moves horizontally with the moving block 13, the excess material at the connection between the material flow channel and the mold groove can be cut off, the gate can be cut off, the gate surface can be kept smooth, and the injection gate of the support teeth 32 can be automatically cut inward.

[0029] A limiting plate 33 is fixedly installed at one end of the core plate 3 to limit the flow channel plate 15 to prevent the flow channel plate 15 from being separated from the core plate 3.

[0030] Here’s how it works:

[0031] During the mold closing process, the template 1 and the template 2 are closed, and the inclined block 22 pushes the moving block 13 to control the flow channel plate 15 to move into the core plate 1 3, and form a material flow path with the core plate 2 and the nozzle. The material flow path guides the material into the mold groove, and then the support teeth 32 are formed.

[0032] During mold separation, the injection gate is inscribed by the inscribed device, the moving block 13 drives the runner plate 15 to slide, the gate is automatically inscribed, the excess material of the product gate is removed, and then the product is ejected by the ejector.

[0033] The internal cutting device performs gate removal processing during the production process, eliminating the need for subsequent manual cutting operations, thereby improving production efficiency, saving costs, and improving product quality.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A metal injection molding mold internal cutting device for a tooth-supporting product, characterized in that: The inner cutting device comprises a moving block (13), an inclined block (22) and a flow channel plate (15) for cutting off the gate material, and the moving block (13) is provided with a T-shaped inclined groove (14) for slidingly installing the inclined block (22); The flow channel plate (15) is slidably mounted on a core plate (3) of the mold, and symmetrically distributed protrusions (31) are fixedly mounted on the core plate (3), and a plurality of mold grooves for forming support teeth (32) are formed on the protrusions (31), and two sides of the flow channel plate (15) slide between the two protrusions (31).

2. A metal injection molding mold internal cutting device for tooth-supporting products according to claim 1, characterized in that: The mold comprises a template one (1) and a template two (2), a core plate one (3) is fixedly mounted on the template one (1), a core plate two is fixedly mounted on the template two (2), and the core plate two is connected to the nozzle.

3. A metal injection molding mold internal cutting device for tooth-supporting products according to claim 2, characterized in that: Positioning blocks 1 (11) are fixedly installed on both sides of the template 1 (1), and positioning blocks 2 (21) are fixedly installed on both sides of the template 2 (2), and the positioning blocks 1 (11) and 2 (21) are snap-fitted.

4. A metal injection molding mold internal cutting device for a tooth-supporting product according to claim 2, characterized in that: The template one (1) is provided with a groove (12), a moving block (13) is slidably installed in the groove (12), and the inclined block (22) is fixedly connected to the template two (2).

5. A metal injection molding mold internal cutting device for a tooth-supporting product according to claim 1, characterized in that: The material flow channel on the flow channel plate (15) is communicated with the mold groove.

6. A metal injection molding mold internal cutting device for a tooth-supporting product according to claim 1, characterized in that: A limiting plate (33) for fixing the flow channel plate (15) is fixedly mounted on one end of the core plate (3).

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