Mold core for injection-molded micro-fluidic chip kit

Abstract

The utility model relates to the technical field of injection molds, in particular to a mold core for injection molding of a micro-fluidic chip kit. An upper mold core and a lower mold core; the upper mold core comprises an upper mold core plate, a convex mold structure arranged in the upper mold core plate in a protruding manner towards the end surface of the lower mold core, and a glue injection port penetrating through the upper mold core plate; a female die structure is arranged on the end face, facing the upper die core, of the lower die core in an inwards-concave mode, and an insert pin hole is formed in the lower die core in a penetrating mode. When the mold is closed, the convex mold structure and the concave mold structure are jointly enclosed to form a product cavity of the micro-fluidic chip kit; the male die structure comprises a box dam in a set shape, protrusions in multiple shapes arranged on the box dam and three protruding strips arranged in parallel in the width direction of the box dam. The concave die structure comprises a groove with a given shape and concave cavities with a plurality of shapes arranged on the groove; according to the mold core, four micro-fluidic chip kits can be formed through one-time injection molding, the structure is reasonable, the practicability is high, and the problem that no mold core for the micro-fluidic chip exists in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a mold core for injection molding a microfluidic chip test kit. Background Art

[0002] Conventional biology, chemistry, physics, and medical laboratories, while their functions vary, share one key point: no matter how simple, they require at least a room to house their instruments and equipment. Microfluidic chips, traditionally considered a highly specialized laboratory, occupy only a few square centimeters yet perform tasks that would normally require an entire laboratory. Prior art microfluidic chip test kits are typically produced using injection molding machines. Designing molds specifically for these microfluidic chips is a pressing challenge. Utility Model Content

[0003] The purpose of the utility model is to provide a mold core for an injection molding microfluidic chip test kit, so as to solve the problem that there is no mold core for the microfluidic chip in the prior art.

[0004] The technical solution of the utility model is: a mold core for injection molding a microfluidic chip test kit, comprising: an upper mold core and a lower mold core; the upper mold core comprises an upper mold core plate, a convex mold structure protruding from the upper mold core plate toward the end surface of the lower mold core, and a glue injection port penetrating the upper mold core plate;

[0005] The lower mold core has a concave mold structure on its end surface facing the upper mold core, and a pin hole is formed through the lower mold core; when the molds are closed, the male mold structure and the female mold structure together enclose a product cavity for the microfluidic chip kit;

[0006] The male mold structure includes a dam of a predetermined shape, protrusions of multiple shapes arranged on the dam, and three convex strips arranged in parallel along the width direction of the dam;

[0007] The die structure includes a groove of a predetermined shape and cavities of multiple shapes arranged on the groove.

[0008] Preferably, the plurality of protrusions include a pair of hexagonal first protrusions respectively arranged at predetermined positions, a pair of regular hexagonal second protrusions, a pentagonal third protrusion with a raised center, a hemispherical fourth protrusion, a half-funnel-shaped fifth protrusion, a columnar sixth protrusion, and a wedge-shaped seventh protrusion with an inclined top surface;

[0009] The top surface of the second protrusion is provided with a columnar and coaxial eighth protrusion;

[0010] A cylinder is embedded in the highest part of the fifth protrusion, and the top surface of the cylinder is higher than the top surface of the fifth protrusion.

[0011] Preferably, the plurality of concave cavities respectively include a first concave cavity arranged at a predetermined position and having a shape matching that of the first protrusion, a second concave cavity having a shape matching that of the second protrusion, a third concave cavity having a shape matching that of the third protrusion, a fourth concave cavity having a shape matching that of the fourth protrusion, and a fifth concave cavity having a shape matching that of the seventh protrusion;

[0012] The position corresponding to the fifth protrusion is a pin hole;

[0013] The bottom of the second cavity continues to define a sixth cavity whose shape matches that of the eighth protrusion.

[0014] Preferably, the groove is formed with a wedge block with a triangular cross-section and a length direction parallel to the length direction of the lower mold core.

[0015] Preferably, some of the pin-setting holes pass through the groove.

[0016] Preferably, the lower mold core has four pieces, and the upper mold core plate is a whole plate and has four symmetrically arranged male mold structures.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] The utility model discloses a mold core for injection molding a microfluidic chip test kit, comprising an upper mold core and a lower mold core; the upper mold core comprises an upper mold core plate, a male mold structure protruding from the upper mold core plate on the end surface facing the lower mold core, and a glue injection port penetrating the upper mold core plate; the lower mold core comprises a female mold structure concavely arranged on the end surface facing the upper mold core, and a pin-setting hole is penetrated through the lower mold core; when the molds are closed, the male mold structure and the female mold structure jointly enclose a product cavity of the microfluidic chip test kit; the male mold structure comprises a dam of a predetermined shape, protrusions of multiple shapes arranged on the dam, and three convex strips arranged in parallel along the width direction of the dam; the female mold structure comprises a groove of a predetermined shape, and concave cavities of multiple shapes arranged on the groove; the mold core of the utility model can injection mold four microfluidic chip test kits at one time, and has a reasonable structure and strong practicality, thereby solving the problem that there is no mold core for the microfluidic chip in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic structural diagram of a mold core for an injection-molded microfluidic chip kit according to this embodiment;

[0021] Figure 2 This is a schematic diagram of a partial structure of a mold core for an injection-molded microfluidic chip kit according to this embodiment;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 Schematic diagram of the structure of the lower mold core of this embodiment;

[0024] Figure 5 This is a structural diagram of the lower mold core according to this embodiment from another angle;

[0025] Figure 6 Schematic diagram of the structure of the fluidic chip kit described in this example.

[0026] Among them: 1. upper mold core, 2. upper mold core plate, 3. injection port, 4. dam, 5. convex strip, 6. first protrusion, 7. second protrusion, 8. third protrusion, 9. fourth protrusion, 10. fifth protrusion, 11. sixth protrusion, 12. seventh protrusion, 13. eighth protrusion, 14. cylinder, 15. lower mold core, 16. pin hole, 17. groove, 18. first concave cavity, 19. second concave cavity, 20. third concave cavity, 21. fourth concave cavity, 22. fifth concave cavity, 23. sixth concave cavity, 24. wedge, 25. fluidic chip test kit. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0028] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0029] like Figures 1-6As shown, a mold core for injection molding a microfluidic chip kit comprises: an upper mold core 1 and a lower mold core 15; the upper mold core 1 comprises an upper mold core plate 2, a male mold structure protruding from the end surface of the upper mold core plate 2 facing the lower mold core 15, and a glue injection port 3 passing through the upper mold core plate 2; the lower mold core 15 comprises a female mold structure concavely provided on the end surface facing the upper mold core 1, and a pin-setting hole 16 is penetrated through the lower mold core 15; when the mold is closed, the male mold structure and the female mold structure jointly enclose to form a product cavity of the microfluidic chip kit; the male mold structure comprises a dam 4 of a predetermined shape, protrusions of multiple shapes arranged on the dam 4, and three convex strips 5 arranged in parallel along the width direction of the dam 4; the female mold structure comprises a groove 17 of a predetermined shape and concave cavities of multiple shapes arranged on the groove 17.

[0030] The multiple protrusions include a pair of hexagonal first protrusions 6, a pair of regular hexagonal second protrusions 7, a pentagonal third protrusion 8 with a protrusion in the middle, a hemispherical fourth protrusion 9, a half-funnel-shaped fifth protrusion 10, a cylindrical sixth protrusion 11, and a wedge-shaped seventh protrusion 12 with an inclined top surface; the top surface of the second protrusion 7 is provided with a cylindrical and coaxial eighth protrusion 13; the highest part of the fifth protrusion 10 is embedded with a cylinder 14, and the top surface of the cylinder 14 is higher than the top surface of the fifth protrusion 10.

[0031] The multiple cavities include a first cavity 18, positioned at predetermined locations and shaped to match the first protrusion 6; a second cavity 19, shaped to match the second protrusion 7; a third cavity 20, shaped to match the third protrusion 8; a fourth cavity 21, shaped to match the fourth protrusion 9; and a fifth cavity 22, shaped to match the seventh protrusion 12. A pinhole 16 is located at the position corresponding to the fifth protrusion 10. A sixth cavity 23, shaped to match the eighth protrusion 13, is further defined at the bottom of the second cavity 19. Recess 17 is formed with a wedge 24, whose length is parallel to the length of the lower mold core 15 and has a triangular cross-section. A portion of pinhole 16 extends through recess 17. The lower mold core 15 consists of four pieces, while the upper mold core plate 2 is a single, symmetrically arranged plate with four male mold structures. The mold core of this utility model can simultaneously mold four microfluidic chip test kits. Its rational structure and practicality address the problem of a lack of mold cores specifically designed for microfluidic chips in the prior art.

[0032] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A mold core for injection molding a microfluidic chip kit, characterized in that: include: An upper mold core and a lower mold core; the upper mold core includes an upper mold core plate, a convex structure protruding from the upper mold core plate toward the end surface of the lower mold core, and a glue injection port penetrating the upper mold core plate; The lower mold core has a concave mold structure on its end surface facing the upper mold core, and a pin hole is formed through the lower mold core; when the molds are closed, the male mold structure and the female mold structure together enclose a product cavity for the microfluidic chip kit; The male mold structure includes a dam of a predetermined shape, protrusions of multiple shapes arranged on the dam, and three convex strips arranged in parallel along the width direction of the dam; The die structure includes a groove of a predetermined shape and cavities of multiple shapes arranged on the groove.

2. The mold core for injection molding a microfluidic chip kit according to claim 1, characterized in that: The plurality of protrusions include a pair of hexagonal first protrusions respectively arranged at predetermined positions, a pair of regular hexagonal second protrusions, a pentagonal third protrusion with a raised center, a hemispherical fourth protrusion, a half-funnel-shaped fifth protrusion, a columnar sixth protrusion, and a wedge-shaped seventh protrusion with an inclined top surface; The top surface of the second protrusion is provided with a columnar and coaxial eighth protrusion; A cylinder is embedded in the highest part of the fifth protrusion, and the top surface of the cylinder is higher than the top surface of the fifth protrusion.

3. The mold core for injection molding a microfluidic chip kit according to claim 2, characterized in that: The plurality of concave cavities respectively include a first concave cavity arranged at a predetermined position and having a shape matching the first protrusion, a second concave cavity having a shape matching the second protrusion, a third concave cavity having a shape matching the third protrusion, a fourth concave cavity having a shape matching the fourth protrusion, and a fifth concave cavity having a shape matching the seventh protrusion; The position corresponding to the fifth protrusion is a pin hole; The bottom of the second cavity continues to define a sixth cavity whose shape matches that of the eighth protrusion.

4. The mold core for injection molding a microfluidic chip kit according to claim 1, characterized in that: The groove is formed with a wedge block with a triangular cross section and a length direction parallel to the length direction of the lower mold core.

5. The mold core for injection molding a microfluidic chip kit according to claim 1, characterized in that: Part of the pin holes passes through the groove.

6. The mold core for injection molding a microfluidic chip kit according to claim 1, characterized in that: The lower mold core has four pieces, and the upper mold core plate is a whole plate and is symmetrically provided with four punch structures.

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