CN219213973U

CN219213973U - Injection molding die for microfluidic product

Info

Publication number: CN219213973U
Application number: CN202320000871.8U
Authority: CN
Inventors: 胡爱明
Original assignee: Suzhou Usane Precision Tooling & Molding Co ltd
Current assignee: Suzhou Usane Precision Tooling & Molding Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-06-20
Anticipated expiration: 2033-01-03

Abstract

The utility model discloses an injection molding die for microfluidic products, which comprises an upper fixing plate, a material pulling plate, an A plate, an elastic material removing mechanism, an upper die core, a lower die core, a B plate, a die foot, a thimble, an upper thimble plate, a lower thimble plate and a lower fixing plate, wherein the middle part of the A plate is provided with longitudinal through holes and is correspondingly provided with the elastic material removing mechanism and the upper die core which are distributed up and down, cavities of the upper fixing plate, the material pulling plate, the elastic material removing mechanism and the upper die core are communicated and provided with an injecting glue runner, the lower die core is correspondingly arranged at the top of the B plate and corresponds to the upper die core up and down, the die foot is arranged between the B plate and the lower fixing plate, the thimble is fixed on the upper thimble plate, and the top correspondingly passes through the B plate and is arranged in the cavity between the upper die core and the lower die core. The utility model has the advantages of compact structure, convenient demoulding, good product quality, long service life, simple processing and high efficiency.

Description

Injection molding die for microfluidic product

Technical Field

The utility model relates to an injection molding die for a microfluidic product.

Background

Injection molding is a process used in mass production of parts of complex shape, and injection molds are therefore very common in the modern manufacturing industry. In the injection molding industry, a plurality of opposite-inserting structures are arranged between a front die and a rear die of some medical microfluidic product parts, a plurality of round holes are formed in the product surface, and in order to mold the square holes, a traditional die is provided with an integral die core. However, the integral mold core is inconvenient to set up when the injection molding is carried out, so that the demolding is difficult, the production efficiency is reduced, and the mold mechanism is complex, the maintenance is difficult and the maintenance cost is high.

Disclosure of Invention

The utility model mainly solves the technical problem of providing the injection molding die for the microfluidic product, which improves product demoulding through an elastic stripping mechanism, and ensures the quality of the injection molding product by designing a hidden gate and cooling and reforming the product deformation through a circulating waterway; the device has the advantages of compact structure, convenient demoulding, good product quality, long service life, simple processing and high efficiency.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a microfluidic product injection moulding mould, including last fixed plate, draw flitch, A board, elasticity to take off the material mechanism, go up mould benevolence, lower mould benevolence, B board, mould foot, thimble, go up thimble board, lower thimble board and lower fixed plate, go up fixed plate, draw flitch, A board, B board, go up thimble board, lower thimble board and lower fixed plate top-down order setting, it is provided with the holding ring to go up the fixed plate top, the A board middle part is the fore-and-aft through-hole setting and corresponds and be provided with elasticity to take off material mechanism and the last mould benevolence of upper and lower distribution, go up the fixed plate, draw flitch, elasticity to take off the material mechanism and go up the die cavity intercommunication of mould benevolence and be provided with the injecting glue runner, the lower mould benevolence corresponds to set up in B board top and last mould benevolence from top to bottom, the mould foot sets up between B board and lower fixed plate, the thimble is fixed on last thimble board and the top corresponds and pass in the die cavity that B board sets up between last mould benevolence and lower mould benevolence.

In a preferred embodiment of the present utility model, the upper fixing plate is connected with a pull rod penetrating through the material pulling plate, the plate A, the plate B, the die legs and the lower fixing plate.

In a preferred embodiment of the utility model, guide posts are arranged around the bottom of the plate A and correspondingly inserted with guide sleeves around the plate B.

In a preferred embodiment of the present utility model, the elastic stripping mechanism comprises a mounting plate, a spring and a spring block.

In a preferred embodiment of the utility model, the mounting plate is flush and fixed on the top of the A plate, the elastic block is fixed on the bottom of the mounting plate through a spring, 5 groups of elastic components consisting of the spring and the elastic block are provided with 1 group in the middle and 4 groups circumferentially distributed at equal intervals, the upper die core longitudinally penetrates through the top of the die cavity and is provided with a sliding groove corresponding to the 5 groups of elastic components, and the elastic block correspondingly penetrates through the sliding groove and is arranged in the die cavity between the upper die core and the lower die core.

In a preferred embodiment of the present utility model, the glue injection channels are arranged with 7 glue injection channels at intervals.

In a preferred embodiment of the present utility model, the B plate is provided with a rear mold cooling plate at the bottom of the lower mold core.

The beneficial effects of the utility model are as follows: according to the injection molding die for the microfluidic product, disclosed by the utility model, the product demoulding is improved through the elastic stripping mechanism, the product deformation is improved through designing the submarine gate and the circulating waterway for cooling, and the quality of the injection molding product is ensured; the device has the advantages of compact structure, convenient demoulding, good product quality, long service life, simple processing and high efficiency.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a cross-sectional view of a preferred embodiment of an injection mold for microfluidic products according to the present utility model;

FIG. 2 is a further cross-sectional view of a preferred embodiment of an injection mold for microfluidic products according to the present utility model;

FIG. 3 is a perspective view of a master mold of a preferred embodiment of an injection mold for microfluidic products according to the present utility model;

FIG. 4 is a perspective view of a male mold of a preferred embodiment of an injection mold for microfluidic products according to the present utility model;

fig. 5 is a perspective view of a microfluidic product injection mold according to a preferred embodiment of the present utility model.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 in combination with fig. 2 to 5, an embodiment of the present utility model includes:

an injection molding die for microfluidic products comprises an upper fixing plate 1, a material pulling plate 2, an A plate 3, an elastic material removing mechanism, an upper die core 4, a lower die core 5, a B plate 6, die legs 7, ejector pins 8, an upper ejector pin plate 9, a lower ejector pin plate 10 and a lower fixing plate 11.

Wherein, upper fixed plate 1, draw flitch 2, A board 3, elasticity take off material mechanism and last mould benevolence 4 and constitute the master model, and lower mould benevolence 5, B board 6, mould foot 7, thimble 8, upper thimble board 9, lower thimble board 10 and lower fixed plate 11 constitute the public mould.

The upper fixing plate 1, the material pulling plate 2, the A plate 3, the B plate 6, the upper thimble plate 9, the lower thimble plate 10 and the lower fixing plate 11 are sequentially arranged from top to bottom to form a whole die assembly.

The top of the upper fixing plate 1 is provided with a positioning ring 12 for positioning the top.

The upper fixing plate 1 is connected with a pull rod 13 penetrating through the material pulling plate 2, the A plate 3, the B plate 6, the die feet 7 and the lower fixing plate 11, so that the dies are prevented from being separated from each other.

The middle part of the A plate 3 is provided with a longitudinal through hole and is correspondingly provided with an elastic stripping mechanism and an upper die core 4 which are distributed up and down, and the A plate 3, the elastic stripping mechanism and the upper die core 4 adopt a combined structure design, so that the subsequent injection molding and demolding are convenient.

Guide posts 14 are arranged around the bottom of the A plate 3 and are correspondingly inserted with guide sleeves 15 around the B plate 6, so that the positioning is convenient.

The die cavity of upper fixed plate 1, drawing flitch 2, elasticity and taking off material mechanism and last mould benevolence 4 communicates and is provided with injecting glue runner 16, injecting glue runner 16 interval distribution is provided with 7, adopts seven point to hide gluey points, and the runner diameter is respectively braun 1mm, improves injecting glue efficiency. The raw material of the product is PMMA, and PMMA plastic is used for molding, and as the appearance surface of the product is easy to shrink and burr is removed, the trace of the glue inlet part is required to be avoided on the appearance surface of the product, and therefore, the hidden mode of the gate is required to be designed.

The lower die core 5 is correspondingly arranged at the top of the B plate 6 and corresponds to the upper die core 4 up and down so as to form a product cavity. The B plate 6 is provided with a rear mold cooling plate 17 at the bottom of the lower mold core 5, and circulating cooling water is communicated with the rear mold cooling plate 17 to provide uninterrupted water cooling, so that the problem of deformation and warping of a product is solved, the problem in production of the product is solved, and the production efficiency and the appearance quality of the product are improved.

The elastic stripping mechanism comprises a mounting plate 18, a spring 19 and an elastic block 20.

The mounting plate 18 is flush and fixed on the top of the A plate 3, so that the mounting plate 18 is ensured to be stably connected with the A plate 3. The elastic blocks 20 are fixed at the bottom of the mounting plate 18 through springs 19, the elastic assemblies formed by the springs 19 and the elastic blocks 20 are provided with 5 groups including 1 group in the middle and 4 groups distributed annularly at equal intervals on the periphery, the upper die core 4 longitudinally penetrates through the top of the die cavity to be provided with sliding grooves 21 corresponding to the 5 groups of elastic assemblies, the elastic blocks 20 correspondingly penetrate through the sliding grooves 21 to be arranged in the die cavity between the upper die core 4 and the lower die core 5, most of the bottoms of the elastic blocks 20 are in contact with the lower die core 5, and the edge part is in contact with a molded product part in the die cavity, so that elastic demolding of the middle and the periphery after the product molding is realized.

The die legs 7 are disposed between the B plate 6 and the lower fixing plate 11 to provide support.

The ejector pin 8 is fixed on the upper ejector pin plate 9, the top of the ejector pin is correspondingly arranged in a cavity between the upper die core 4 and the lower die core 5 through the B plate 6, and the ejector pin is used for ejecting the lower die core 5 after a product is formed.

In summary, according to the microfluidic product injection molding die disclosed by the utility model, product demolding is improved through the elastic stripping mechanism, product deformation is improved through designing the submarine gate and the circulating waterway for cooling, and the quality of injection molding products is ensured; the device has the advantages of compact structure, convenient demoulding, good product quality, long service life, simple processing and high efficiency.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. The utility model provides a micro-fluidic product injection moulding mould, its characterized in that includes fixed plate, draws flitch, A board, elasticity and takes off material mechanism, goes up mould benevolence, lower mould benevolence, B board, mould foot, thimble, go up thimble board, lower thimble board and lower fixed plate, go up fixed plate, draw flitch, A board, B board, go up thimble board, lower thimble board and lower fixed plate top-down order setting, it is provided with the holding ring to go up the fixed plate top, the A board middle part is the longitudinal through-hole setting and corresponds and be provided with elasticity and take off material mechanism and the last mould benevolence of upper and lower distribution, go up fixed plate, draw flitch, elasticity and take off material mechanism and go up mould benevolence die cavity intercommunication and be provided with the injecting glue runner, the lower mould benevolence corresponds to set up in B board top and last mould benevolence from top to bottom, the mould foot sets up between B board and lower fixed plate, the thimble is fixed on last thimble board and the top corresponds and passes in the die cavity that B board sets up between last mould benevolence and lower mould benevolence.

2. The injection molding die for the microfluidic product according to claim 1, wherein the upper fixing plate is connected with a pull rod penetrating through the material pulling plate, the A plate, the B plate, the die feet and the lower fixing plate.

3. The injection molding die for the microfluidic product according to claim 1, wherein guide posts are arranged on the periphery of the bottom of the A plate and are correspondingly inserted into guide sleeves on the periphery of the B plate.

4. The injection mold of claim 1, wherein the elastic stripping mechanism comprises a mounting plate, a spring, and a spring block.

5. The injection molding die for the microfluidic product according to claim 4, wherein the mounting plate is flush and fixed at the top of the plate A, the elastic block is fixed at the bottom of the mounting plate through a spring, the elastic assembly formed by the spring and the elastic block is provided with 5 groups including 1 group in the middle and 4 groups circumferentially distributed at equal intervals, the upper die core longitudinally penetrates through the top of the die cavity and is provided with a sliding groove corresponding to the 5 groups of elastic assembly, and the elastic block correspondingly penetrates through the sliding groove and is arranged in the die cavity between the upper die core and the lower die core.

6. The injection molding die for the microfluidic product according to claim 1, wherein 7 glue injection runners are arranged at intervals.

7. The injection molding die for the microfluidic product according to claim 1, wherein the B plate is provided with a rear mold cooling plate at the bottom of the lower mold core.