Layered multi-piece filter screen cavity structure for filter screen injection molding

Abstract

The utility model provides a layered multi-sheet filter screen cavity structure for filter screen injection molding. The layered multi-sheet filter screen cavity structure comprises a plurality of sheet plates, the plurality of sheet plates are correspondingly overlapped together and are mounted in the fixed seat; a plurality of material burying holes are formed in the corresponding positions of the sheet plate, and a plurality of strip-shaped injection molding grooves are correspondingly formed in the periphery of the material burying holes in the sheet plate. Annular liquid injection grooves are correspondingly formed in the peripheries of the material burying holes in the side faces of the inner sides of the sheet plates, the peripheries of the material burying holes in the side faces of the inner sides of the sheet plates are sunken inwards to form annular liquid flowing gaps, and the annular liquid injection grooves communicate with the corresponding material burying holes through the annular liquid flowing gaps. And a plurality of liquid injection holes are correspondingly formed in the multiple sheet plates located on the inner side of the fixing base, the liquid injection holes are correspondingly located between every two adjacent material burying holes, and the liquid injection holes correspondingly communicate with the annular liquid injection grooves in the two sides. According to the utility model, the problem that molten injection molding liquid is hardened too early due to too fast heat dissipation during injection molding for a long time is effectively solved, and the whole structural design is ingenious and the practicability is high.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of filter screen injection molding, and particularly relates to a layered multi-piece filter screen cavity structure for filter screen injection molding. Background Art

[0002] As a core component in filtering equipment, filter screens are widely used in fields such as automotive filters, air purifiers, and industrial filtration systems. During the production process of filter screens, the injection molding process is usually adopted to combine a plastic matrix with a metal or synthetic fiber filter screen to form an integrated structure.

[0003] In the field of filter screen injection molds, traditional cavity structures usually adopt an integral design, and the combination of the filter screen and the plastic matrix is completed through a single cavity. However, there are certain inconveniences in the use of the flow channel design of this traditional integral cavity. When the molten injection liquid flows from one end to the other during the injection filling process, it is very easy to harden prematurely before being completely filled due to excessive heat dissipation over a long time, resulting in uneven injection or blockage of the injection channel. Therefore, it is necessary to propose an improvement measure to solve the above technical problems.

[0004] It should be noted that the above content belongs to the technical cognition scope of the inventor. Due to the vast and extremely complex technical content in this field, the above content of this application does not necessarily constitute the prior art. Summary of the Utility Model

[0005] 1. Technical problems to be solved by the utility model:

[0006] The utility model provides a layered multi-piece filter screen cavity structure for filter screen injection molding to solve the technical problems existing in the above background art.

[0007] 2. Technical solutions:

[0008] To achieve the above purpose, the technical solution provided by the utility model is: a layered multi-piece filter screen cavity structure for filter screen injection molding, including multiple piece plates; the multiple piece plates are correspondingly stacked together and installed in a fixed seat; a plurality of material embedding holes are correspondingly formed at corresponding positions on the piece plates, and a plurality of strip-shaped injection grooves are correspondingly arranged around the material embedding holes on the piece plates; annular liquid injection grooves are correspondingly formed around the material embedding holes on the inner side surface of the piece plates, and an annular liquid flow gap is formed by inward depression around the material embedding holes on the inner side surface of the piece plates, and the annular liquid injection grooves are communicated with the corresponding material embedding holes through the annular liquid flow gap; a plurality of liquid injection holes are also correspondingly formed on the inner side multi-piece plates of the fixed seat, the liquid injection holes are correspondingly located between two adjacent material embedding holes, and the liquid injection holes are correspondingly communicated with the annular liquid injection grooves on both sides; an injection port is correspondingly formed on the fixed seat, and the injection port is correspondingly communicated with the plurality of liquid injection holes on the piece plates.

[0009] Further, tapered liquid flow grooves are correspondingly formed between adjacent material embedding holes on the inner side surface of the sheet plate to achieve communication. The liquid injection holes between adjacent material embedding holes correspondingly penetrate through the tapered liquid flow grooves, and the liquid injection holes are correspondingly communicated with the annular liquid injection grooves on both sides thereof through the tapered liquid flow grooves.

[0010] Further, an annular blocking member is correspondingly arranged in the material embedding hole of the sheet plate located on the innermost side for blocking the edge of the inner annular cylindrical mesh cloth when the annular cylindrical mesh cloth is embedded.

[0011] Further, an injection molding channel is correspondingly formed inside the rear side wall of the fixed seat, and the injection molding channel is correspondingly communicated with a plurality of liquid injection holes on the sheet plate. An injection molding port is also correspondingly formed on the outer wall of the rear side of the fixed seat, and the injection molding port is correspondingly communicated with the middle part of the injection molding channel.

[0012] Further, an annular vacuum cavity is correspondingly arranged around the injection molding channel inside the rear side wall of the fixed seat, and a suction nozzle connected to a vacuum pump is arranged on one side of the annular vacuum cavity.

[0013] Further, an annular installation cavity is correspondingly arranged around the injection molding channel inside the rear side wall of the fixed seat, and an electric heating resistance wire is correspondingly installed in the annular installation cavity.

[0014] Further, a weight reduction hole is correspondingly arranged in the middle of the sheet plate; positioning holes are correspondingly arranged around the sheet plate.

[0015] 3. Beneficial effects:

[0016] Adopting the technical solution provided by the present utility model, compared with the prior art, the following beneficial effects are achieved:

[0017] The present utility model is reasonably designed. A layered multi-sheet filter cavity structure is realized by stacking multiple sheet plates together, so that during injection molding, the injection liquid can flow from between multiple sheet plates to the material embedding holes for filter screen injection molding, without flowing from one end to the other end, effectively improving the problem that the molten injection liquid hardens prematurely due to excessive heat dissipation during injection molding for too long; and an annular vacuum cavity or a spiral electric heating resistance wire is also correspondingly arranged around the injection molding channel on the fixed seat, so that the injection liquid can be further insulated or heated, better avoiding premature hardening of the molten injection liquid before being completely filled, ensuring normal injection molding. The overall structure is ingeniously designed and has strong practicability.

[0018] It should be noted that the structures not introduced in the present utility model are the same as the prior art or can be realized by adopting the prior art because they do not involve the design key points and improvement directions of the present utility model, and will not be elaborated herein. Description of the Drawings

[0019] Figure 1 It is an enlarged structural schematic diagram of the material embedding hole after multiple sheet plates of the present utility model are stacked.

[0020] Figure 2 Schematic structural diagram of the sheet of the present utility model mounted on the fixing seat;

[0021] Figure 3 Cross-sectional structural diagram of the sheet of the present utility model mounted on the fixing seat.

[0022] Reference numerals:

[0023] 1. Sheet; 101. Embedded material hole; 102. Liquid injection hole; 103. Conical liquid flow groove; 104. Annular liquid injection groove; 105. Annular liquid flow gap; 106. Strip-shaped injection molding groove; 107. Annular blocking member; 108. Weight reduction hole; 109. Positioning hole; 2. Fixing seat; 201. Injection port; 202. Injection channel; 203. Annular vacuum chamber. Detailed implementation manners

[0024] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "thickness", "upper", "lower", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly defined and limited, the terms "mounted", "connected", "fixed", "provided", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment

[0028] Refer to the attached Figures 1-3, A layered multi-piece filter cavity structure for filter screen injection molding in this embodiment includes multiple piece plates 1; the multiple piece plates 1 are correspondingly stacked together and installed in a fixed seat 2. A plurality of material embedding holes 101 are correspondingly formed at corresponding positions on the piece plate 1, and a plurality of strip-shaped injection molding grooves 106 are correspondingly arranged around the material embedding holes 101 on the piece plate 1, and the plurality of strip-shaped injection molding grooves 106 are evenly spaced in a ring. An annular liquid injection groove 104 is correspondingly formed around the material embedding hole 101 on the inner side surface of the piece plate 1, and an annular liquid flow gap 105 is formed by inward depression around the material embedding hole 101 on the inner side surface of the piece plate 1, and the annular liquid injection groove 104 is communicated with the corresponding material embedding hole 101 through the annular liquid flow gap 105. A plurality of liquid injection holes 102 are also correspondingly formed on the multiple piece plates 1 located inside the fixed seat 2, that is, except for the outermost piece plate 1, a plurality of liquid injection holes 102 are correspondingly formed on the piece plates 1 located inside, the liquid injection holes 102 are correspondingly located between two adjacent material embedding holes 101, and the liquid injection holes 102 are correspondingly communicated with the annular liquid injection grooves 104 on both sides; an injection molding port 201 is correspondingly formed on the fixed seat 2, and the injection molding port 201 is correspondingly communicated with the plurality of liquid injection holes 102 on the piece plate 1.

[0029] Specifically, a tapered liquid flow groove 103 is correspondingly formed between adjacent material embedding holes 101 on the inner side surface of the piece plate 1 to achieve communication, the liquid injection holes 102 between adjacent material embedding holes 101 correspondingly penetrate through the tapered liquid flow groove 103, and the liquid injection holes 102 are correspondingly communicated with the annular liquid injection grooves 104 on both sides through the tapered liquid flow groove 103. The annular liquid injection groove 104 on the outermost piece plate 1 is correspondingly communicated with the liquid injection hole 102 on the adjacent inner piece plate 1 through the tapered liquid flow groove 103 on this piece plate 1. An annular blocking member 107 is correspondingly arranged in the material embedding hole 101 of the innermost piece plate 1, which is used to block the edge of the inner annular cylindrical mesh cloth when embedding the annular cylindrical mesh cloth, so as to facilitate smooth injection molding.

[0030] An injection molding channel 202 is correspondingly formed inside the rear side wall of the fixed seat 2, the injection molding channel 202 is correspondingly communicated with the plurality of liquid injection holes 102 on the piece plate 1, an injection molding port 201 is also correspondingly formed on the outer wall of the rear side of the fixed seat 2, and the injection molding port 201 is correspondingly communicated with the middle part of the injection molding channel 202.

[0031] Specifically in this embodiment, four buried material holes 101 are provided at corresponding positions on the sheet board 1. The four buried material holes 101 are arranged side by side. A liquid injection hole 102 is correspondingly provided between the two upper buried material holes 101, and a liquid injection hole 102 is also correspondingly provided between the two lower buried material holes 101. The liquid injection hole 102 is correspondingly communicated with the buried material holes 101 on both sides thereof through a conical liquid flow groove 103. The injection port 201 is correspondingly communicated with two buried material holes 101 through an injection channel 202. A weight reduction hole 108 is correspondingly provided in the middle of the sheet board 1. Positioning holes 109 are correspondingly provided around the sheet board 1 so that when the annular cylindrical mesh is buried, it can be inserted and positioned with the positioning rods on the tooling fixture installed on the manipulator, thereby realizing accurate butt-joint material burying. The sheet board 1 can be fixedly connected to the fixed seat 2 by existing methods such as welding, bonding, and integral molding. The thickness of the sheet board 1 can be about 0.2 mm, and the gap between adjacent sheet boards 1 is generally between 0.04 mm and 0.05 mm.

[0032] It is worth noting that a ring-shaped vacuum cavity 203 is correspondingly provided around the injection channel 202 on the rear side wall of the fixed seat 2. A suction nozzle connected to a vacuum pump is correspondingly provided on one side of the ring-shaped vacuum cavity 203 so that the ring-shaped vacuum cavity 203 is in a vacuum state, playing a role of heat preservation and heat insulation to prevent the molten injection liquid from hardening prematurely.

[0033] Of course, this structure may not be provided with a ring-shaped vacuum cavity 203 around the injection channel 202, but a ring-shaped installation cavity is correspondingly provided around the injection channel 202 on the rear side wall of the fixed seat 2, and a spiral electric heating resistance wire is correspondingly installed in the ring-shaped installation cavity to heat the injection liquid to make it in a molten state for injection molding.

[0034] The above embodiments only represent a certain implementation manner of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A layered multi-piece filter cavity structure for filter injection molding, characterized in that: The invention comprises a plurality of plates (1); the plurality of plates (1) are stacked together and installed in a fixing seat (2); a plurality of embedding holes (101) are provided at corresponding positions on the plates (1); a plurality of strip-shaped injection molding grooves (106) are provided around the embedding holes (101) on the plates (1); an annular liquid injection groove (104) is provided around the embedding holes (101) on the inner side surface of the plates (1); the embedding holes (101) on the inner side surface of the plates (1) are recessed inward to form an annular liquid flow gap (105); the annular liquid injection groove (104) is provided around the embedding holes (101) on the inner side surface of the plates (1). 104) is connected to the corresponding embedding hole (101) through the annular liquid flow gap (105); the plurality of plates (1) located on the inner side of the fixing seat (2) are also provided with a plurality of injection holes (102), the injection holes (102) are located between two adjacent embedding holes (101), and the injection holes (102) are connected to the annular injection grooves (104) on both sides; the fixing seat (2) is provided with an injection port (201), and the injection port (201) is connected to the plurality of injection holes (102) on the plate (1).

2. The layered multi-piece filter cavity structure for filter injection molding according to claim 1, characterized in that: Conical liquid flow grooves (103) are correspondingly provided between adjacent embedding holes (101) on the inner side surface of the sheet (1) to achieve communication, and the injection holes (102) between adjacent embedding holes (101) pass through the conical liquid flow grooves (103) respectively, and the injection holes (102) are correspondingly connected to the annular liquid injection grooves (104) on both sides thereof through the conical liquid flow grooves (103).

3. The layered multi-piece filter cavity structure for filter injection molding according to claim 2, characterized in that: An annular blocking member (107) is correspondingly provided in the embedding hole (101) of the innermost plate (1) and is used to block the edge of the inner annular cylindrical mesh cloth end when embedding the annular cylindrical mesh cloth.

4. A layered multi-piece filter cavity structure for filter injection molding according to any one of claims 1 to 3, characterized in that: An injection channel (202) is correspondingly provided inside the rear side wall of the fixing seat (2), and the injection channel (202) is correspondingly connected to the plurality of injection holes (102) on the plate (1). An injection port (201) is also correspondingly provided on the rear outer wall of the fixing seat (2), and the injection port (201) is correspondingly connected to the middle of the injection channel (202).

5. The layered multi-piece filter cavity structure for filter injection molding according to claim 4, characterized in that: An annular vacuum cavity (203) is correspondingly provided around the injection channel (202) in the rear side wall of the fixing seat (2), and a suction nozzle connected to a vacuum pump is correspondingly provided on one side of the annular vacuum cavity (203).

6. The layered multi-piece filter cavity structure for filter injection molding according to claim 4, characterized in that: An annular installation cavity is correspondingly provided around the injection molding channel (202) in the rear side wall of the fixing seat (2), and an electric heating resistance wire is correspondingly installed in the annular installation cavity.

7. A layered multi-piece filter cavity structure for filter injection molding according to any one of claims 1 to 3, characterized in that: A weight-reducing hole (108) is correspondingly provided in the middle of the plate (1); and positioning holes (109) are correspondingly provided around the periphery of the plate (1).

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