CN117584380A - Three-plate double-color mold and cell counting plate prepared by same - Google Patents

Abstract

The invention discloses a three-plate double-color mold and a cell counting plate prepared by the same, and relates to the technical field of injection molding equipment. The three-plate double-color mold comprises a front mold, a rear mold, a driving mechanism, a first injection system and a second injection system; the front mold comprises a plate A, a front mold core A and a front mold core B, wherein the front mold core A and the front mold core B are arranged on the plate A; the rear mould comprises a rotary disc, a rear mould core A, a rear mould core B and a driving device, wherein the rear mould core A and the rear mould core B are arranged on the rotary disc; the driving device is connected with the turntable and used for driving the turntable to rotate. According to the three-plate double-color mold, after the first injection molding is finished by the first injection system, the replacement of the cavity is realized by the rotation of the turntable, a cavity area convenient for secondary molding is formed, and the filling of the cavity area is finished by the second injection system, so that the secondary molding effect is achieved, the injection molding and the assembly bonding of three parts can be realized, the working procedures of the prior art are reduced, and the efficiency is improved.

Description

Three-plate double-color mold and cell counting plate prepared by same

Technical Field

The invention relates to the technical field of injection molding equipment, in particular to a three-plate double-color mold and a cell counting plate prepared by the same.

Background

The cell counting plate is used as a carrier of the cell suspension, and when cells in the cell suspension to be detected are uniformly distributed, the number of the cells in the cell suspension per milliliter can be calculated by measuring the number of the cells in a certain volume of the suspension. The cell counting plate is mostly in a flat plate shape, the functional areas are rectangular long-strip cavity structures, the number of the functional areas is unequal, the height of the functional areas is 0.1mm or 0.2mm, a semicircular groove is formed in the inlet position above the cavity, and a rectangular groove is formed in the tail end of the semicircular groove.

The existing production process of the cell counting plate comprises the steps of respectively injection molding a bottom plate and a cover plate, carrying out plasma treatment after concentrated cleaning, and assembling the bottom plate and the cover plate together through viscose. The specific process comprises the following steps: 1. respectively injection-molding to produce a bottom plate and a cover plate through two sets of molds (each set of molds needs four steps of mold closing, injection molding, mold opening and ejection), and then independently placing the bottom plate and the cover plate in a tray, wherein the injection molding process is that plastic raw material particles are heated and melted through an injection molding machine, high-speed high-pressure melt enters the molds, and cooling, solidifying and molding are carried out; 2. the bottom plate and the cover plate are subjected to plasma treatment of plastic parts by adopting plasma treatment equipment, and process gas molecules are excited by a plasma generator to form plasma, and react with organic pollutants and microparticle pollutants to collide to form various volatile substances, so that the purposes of cleaning, activating and the like of the surfaces of the treated objects are achieved; 3. and (5) gluing between the bottom plate and the cover plate by adopting automatic gluing equipment and gluing and assembling.

The cell counting plate production process has the following problems: 1. the process flow is complex, three working procedures are needed, and operators are more; 2. the increase of the process leads to the decrease of the through rate and influences the production yield of the product; 3. auxiliary equipment is more, equipment cost is higher, and a larger production area is needed; 4. the cost of consumable (glue) is high, and long-term purchase is needed.

Disclosure of Invention

According to the technical problems, the invention discloses a three-plate double-color die for products which are assembled after being glued and have hollow structures and need sealing structures, the production procedures of the products are reduced, the three procedures are integrated in an injection molding machine, and the products can be glued and sealed without glue dispensing equipment. The aim of the invention is achieved by the following technical scheme.

Providing a three-plate double-color mold, comprising a front mold, a rear mold, a driving mechanism, a first injection system and a second injection system;

the front die comprises a plate A, a front die core A and a front die core B; the front mold core A and the front mold core B are arranged on the plate A;

the rear mould comprises a rotary disc, a rear mould core A, a rear mould core B and a driving device; the rear mold core A and the rear mold core B are arranged on the turntable; the driving device is connected with the turntable and used for driving the turntable to rotate;

the front mold core A and the rear mold core A are matched to form a first component injection cavity, and the front mold core B and the rear mold core B are matched to form a second component injection cavity;

the first injection system is respectively communicated with the first component injection cavity and the second component injection cavity and is used for injection molding the first component and the second component; the second injection system is communicated with an injection cavity of the bonding part formed after the first part and the second part are spliced, and is used for injection molding the bonding part between the first part and the second part;

the driving mechanism is connected with the front die and the rear die and is used for driving the front die and the rear die to open and close.

Preferably, the plate A is also provided with a front die core C, and the front die core A, the front die core B and the front die core C are uniformly distributed on the plate A according to 120 degrees; the rotary table is also provided with a rear die core C, and the rear die core A, the rear die core B and the rear die core C are uniformly distributed on the rotary table according to 120 degrees.

Further, the rear mold further comprises an ejection structure, wherein the ejection structure is arranged below the rear mold core B and is used for ejecting the secondary injection molding product on the rear mold core B. Specifically, the ejection structure comprises accessories such as thimble bottom plate, thimble panel and thimble, screw, spring, wherein the thimble is installed between thimble bottom plate and panel, and through the screw fixation together, the spring is installed in the guide pin, is in the pre-compaction state. When the ejection action is started, a push force is applied to the ejector rod of the injection molding machine and the ejector rod bottom plate, the ejector rod is driven to eject the product, meanwhile, the spring is in a compressed state, after the product is taken out, the ejector rod is retracted to an initial position, and the ejector rod and the surface bottom plate are reset under the action of the spring.

Preferably, the driving device comprises a large gear, a central shaft, a driving gear and a servo motor; the large gear is positioned below the turntable, and the central shaft is fixedly connected with the centers of the large gear and the turntable; the large gear is connected with the driving gear in a meshed manner; the servo motor is connected with the driving gear and used for driving the driving gear.

More preferably, a reduction gear is further arranged between the large gear and the driving gear, and the driving gear drives the large gear to rotate through the reduction gear.

Preferably, the rear mould further comprises a B plate, and the B plate is positioned between the large gear and the turntable; the center of the B plate is provided with a containing hole for containing the central shaft; a plurality of pressing blocks are arranged on the B plate around the rotary table, and the pressing blocks are located on the side face of the rotary table.

Further, the front mould also comprises a hot runner plate and a water gap plate; the hot runner plate, the water gap plate and the A plate are sequentially stacked, and the first injection system and the second injection system are fixed on the hot runner plate.

Preferably, the front mold further comprises an automatic fastening component; the automatic fastening component comprises a draw hook, a sliding block and a buckling pin, wherein the draw hook is arranged on the hot runner plate, the sliding block is arranged on the A plate, a spring device which is convenient for forced resetting of the sliding block is arranged at the back of the sliding block, and the buckling pin is arranged on the turntable.

More preferably, the front mold further comprises a panel, and the hot runner plate is fixed on the panel; the feed inlet of the first injection system is positioned on the panel, and the feed inlet of the second injection system is positioned on the side surface of the hot runner plate.

Further, the three-plate double-color mold further comprises a manipulator for plasma polarization treatment.

According to the three-plate double-color mold, after the first injection molding is finished by the first injection system, the replacement of the cavity is realized by the rotation of the turntable, a cavity area convenient for secondary molding is formed, and the filling of the cavity area is finished by the second injection system, so that the secondary molding effect is achieved, the injection molding and the assembly bonding of three parts can be realized, the working procedures of the prior art are reduced, and the efficiency is improved.

The invention also provides a cell counting plate, which comprises a cover plate and a bottom plate, wherein the cover plate is arranged on the bottom plate and forms a functional area of a cavity structure in the cell counting plate, and a front end hole and a rear end hole which are positioned above the functional area are arranged on the cover plate; the cell counting plate is internally provided with a frame injection molding groove, an injection molding frame is arranged in the frame injection molding groove, and the frame is positioned between the cover plate and the bottom plate and used for bonding the cover plate and the bottom plate.

Preferably, the cross section of the frame injection molding groove is elliptical or elliptical with a tail, and the tail points to the functional area. The frame is designed in a groove shape, and after the frame is formed by injection molding, a better sealing effect can be realized.

Preferably, the frame injection molding groove is arranged around the cavity structure.

More preferably, the energy area is a rectangular strip cavity structure, and the height is 0.1mm or 0.2mm at most; the number of the functional areas can be multiple, such as 2-12; the front end hole on the cover plate is a semicircular hole, and the rear end hole is a rectangular hole.

The cell counting plate can be prepared by adopting the three-plate double-color mold.

Specifically, the invention provides a three-plate double-color mold for automatic production of a cell counting plate and a preparation process, and the three-plate double-color mold is integrated with plasma spraying in the forming process. The cell counting plate does not need to manually take out the cover plate and the bottom plate to carry out viscose treatment in the production process, can improve the production efficiency of products, and saves manpower and material resources.

Cell counting plate product material: the cover plate and the bottom plate adopt PMMA, the middle frame part can be made of the same type of PMMA or transparent TPE, and the material of the frame can be recombined with the PMMA.

Principle of operation

1. The material aspect: when the high-temperature plastic passes through the surface of another plastic, the surface of the original plastic can be remelted, and the new plastic is recombined with the original plastic after being injected, so that the adhesion effect of the two plastics is achieved.

2. The aspect of the die: and after the first injection molding is finished on the mold, the displacement of the cavity is realized through the translation or rotation of the inner mold part, a cavity area convenient for secondary or multiple molding is formed, and the filling of the cavity area is finished by using another runner system, so that the effect of multiple molding is achieved.

The three-plate double-color mold for automatic production of the cell counting plate comprises a front mold, a rear mold, a driving mechanism, a manipulator, a first injection system and a second injection system; the driving mechanism is connected with the front die and the rear die and is used for driving the front die and the rear die to open and close; the manipulator is used for plasma polarization treatment.

The front mould comprises a panel, a hot runner plate, a water gap plate, an A plate, a front mould core A, a front mould core B, a front mould core C and an automatic fastening component. The panel, the hot runner plate, the water gap plate and the A plate are arranged in a laminated mode. The hot runner plate is fixed on the panel, and the first injection system and the second injection system are fixed on the hot runner plate. The feed inlet of the first injection system is positioned on the panel, and the feed inlet of the second injection system is positioned on the side surface of the hot runner plate. The front mold core A and the front mold core B are respectively provided with a material injection port of a first injection system, and the material injection ports of a second injection system are positioned on the front mold core A.

The front mold core A, the front mold core B and the front mold core C are arranged on the plate A and uniformly distributed on the plate A according to 120 degrees. The front mould core A, the front mould core B and the front mould core C are fixed on the A plate and respectively correspond to three stations A, B, C.

The rear mould comprises a rear mould bottom plate, a gear mounting plate, a B plate, a rotary table, a rear mould core A, a rear mould core B, a rear mould core C and a driving device.

The rear mould core A, the rear mould core B and the rear mould core C are arranged on the rotary table and uniformly distributed on the rotary table according to 120 degrees.

The driving device comprises a large gear, a central shaft, a reduction gear, a driving gear and a servo motor. The gear wheel is positioned below the turntable, and the center shaft is fixedly connected with the center of the gear wheel and the center of the turntable. The servo motor is connected with a driving gear and is used for driving the driving gear, and the large gear is meshed with the driving gear through a reduction gear between the large gear and the driving gear. The rotation of the turntable is realized by controlling the servo motor to drive each gear.

The gear mounting plate is fixed on the rear die bottom plate, and the large gear and the reduction gear are mounted on the gear mounting plate through the rotating shaft, so that the large gear and the reduction gear are fixed at the position between the gear mounting plate and the turntable.

The center of the B plate is provided with a containing hole for containing the central shaft, the B plate is provided with a plurality of pressing blocks around the turntable, and the pressing blocks are positioned on the side face of the turntable.

The rear mould further comprises an ejection structure, wherein the ejection structure is arranged below the rear mould core B and is used for ejecting the cell counting plate on the rear mould core B. Specifically, the ejection structure is composed of fittings such as a thimble bottom plate, a thimble panel, a thimble, a screw, a spring and the like.

In order to simplify the mould action, cold runner parts of two runner systems are concentrated in one mould opening, so an automatic fastening assembly is required to be designed, and the front mould part is not opened when the mould is opened for the first time and is opened again when the mould is opened for the second time. The automatic fastening component comprises a draw hook, a sliding block and a buckling pin, wherein the draw hook is arranged on the hot runner plate, the sliding block is arranged on the A plate, a spring device which is convenient for forced resetting of the sliding block is arranged at the back of the sliding block, the forced resetting of the sliding block is convenient, and the buckling pin is arranged on the turntable. When the die is at the initial position, the sliding block is sprung open and buckled into the drag hook, the drag hook can buckle the A plate, the water gap plate, the hot runner plate and the panel together, after the die is opened for the first time, the rear die rotates for 120 degrees, the buckling pin coincides with the hole position of the sliding block, the sliding block is separated from the drag hook, and therefore the front die part can be opened.

The front mold core A and the rear mold core A are matched to form a bottom plate injection cavity, and the front mold core B and the rear mold core B are matched to form a cover plate injection cavity; the first injection system is respectively communicated with the bottom plate injection cavity and the cover plate injection cavity and is used for first injection molding of the cover plate and the bottom plate, and the die core C group plays a role in balancing and avoiding air. After the first injection molding die is opened, the cover plate is positioned on the rear die core B, the bottom plate is positioned on the front die core A, and the manipulator can carry out plasma polarization treatment on the cover plate on the rear die core B and the bottom plate on the front die core A. And the servo motor drives the turntable to rotate 120 degrees, so that the positions of the front mold core A and the rear mold core B are overlapped, the front mold core B, C is overlapped with the rear mold core C, A respectively, and a second injection system after mold assembly is communicated with a frame injection cavity formed after the cover plate and the bottom plate are spliced and used for injection molding of a frame between the cover plate and the bottom plate.

The three-plate double-color mold for automatic production of the cell counting plate comprises an in-mold rotating structure, and a turntable is controlled by a servo motor to accurately rotate by 120 degrees; the mould benevolence of back mould side is all fixed on the carousel, after first shaping, makes apron rotatory to A station, can carry out secondary shaping after the compound die, in addition, with plasma spraying design integration in the manipulator, carries out polarization to apron and bottom plate after the first time die sinking, need not to place in the assigned position again after the manual sampling, has also avoided the deviation of manual work in-process of placing and to the damage of product, has improved efficiency and product precision.

The die core is designed into three groups A, B, C, wherein two groups A, B are respectively used for forming the cover plate and the bottom plate, and the group C is used for replacing the position after rotation, so that the interference of the protruding part of the die core is avoided, and the balance in the die cavity can be ensured. By the design mode, the size of the die can be saved, the waste of space is reduced, the inter-fit groups are reduced, and the requirement can be met by four groups of die cores according to the conventional design mode; meanwhile, the die core is arranged on the outer side, so that the die can be conveniently disassembled.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front mold structure diagram of a three-plate two-color mold according to embodiment 2 of the present invention.

Fig. 2 is a front mold structure diagram of a three-plate two-color mold according to embodiment 2 of the present invention.

Fig. 3 is a block diagram of a first injection system and a second injection system according to embodiment 2 of the present invention.

Fig. 4 is a block diagram of a second injection system according to embodiment 2 of the present invention.

Figure 5 is a cross-sectional view of the automatic fastening component of figure 1 taken along the direction A-A of the present invention.

Fig. 6 is a rear mold structure diagram of a three-plate two-color mold according to embodiment 2 of the present invention.

Fig. 7 is a structural view of a turntable and a driving unit in embodiment 2 of the present invention.

Fig. 8 is a structural diagram of a rear mold core B and an ejection structure in embodiment 2 of the present invention.

Fig. 9 is a structural diagram of the front mold and the rear mold after the first mold opening in embodiment 2 of the present invention.

Fig. 10 is a structural view of the front and rear molds of fig. 9, in which the turntable of the rear mold is rotated 120 °.

Fig. 11 is a structural diagram of the front mold and the rear mold at the time of the second mold closing in embodiment 2 of the present invention.

Fig. 12 is a structural diagram of a front mold and a rear mold after the second mold opening in embodiment 2 of the present invention.

FIG. 13 is an exploded view of the cell counting plate of example 3 of the present invention.

FIG. 14 is a block diagram of a cell counting plate according to example 3 of the present invention, and a sectional view taken along the A-A direction.

Fig. 15 is a partial enlarged view of the region X in fig. 14.

FIG. 16 is a block diagram of a cell counting plate according to example 4 of the present invention, and a sectional view taken along the B-B direction.

Fig. 17 is a partial enlarged view of the Y region in fig. 16.

The figure identifies the description:

100-front mold, 200-rear mold, 1-front mold core A, 2-front mold core B, 3-front mold core C,4-A plate, 5-automatic fastening component, 6-drag hook, 7-slide block, 8-fastening pin, 9-first injection system, 10-second injection system, 11-panel, 12-hot runner plate, 13-water gap plate, 14-rear mold core A, 15-rear mold core B, 16-rear mold core C, 17-turntable, 18-B plate, 19-press block, 20-servo motor, 21-gearwheel, 22-ejector pin bottom plate, 23-ejector pin panel, 24-gear mounting plate, 25-rear mold bottom plate, 300-cell counting plate, 301-cover plate, 302-frame, 303-bottom plate, 304-cover plate, 305-frame, 306-bottom plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that if the azimuth or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

A three-plate double-color mold comprises a front mold, a rear mold, a driving mechanism, a first injection system and a second injection system;

the front mould comprises a plate A, a front mould core A and a front mould core B; the front mold core A and the front mold core B are arranged on the plate A;

the rear mould comprises a rotary disc, a rear mould core A, a rear mould core B and a driving device; the rear mold core A and the rear mold core B are arranged on the turntable; the driving device is connected with the turntable and used for driving the turntable to rotate;

the front mold core A and the rear mold core A are matched to form a first component injection cavity, and the front mold core B and the rear mold core B are matched to form a second component injection cavity;

the first injection system is respectively communicated with the first component injection cavity and the second component injection cavity and is used for injection molding the first component and the second component; the second injection system is communicated with an injection cavity of the bonding part formed after the first part and the second part are spliced, and is used for injection molding the bonding part between the first part and the second part;

the driving mechanism is connected with the front die and the rear die and is used for driving the front die and the rear die to open and close.

In some other embodiments, the front mold core C can be further arranged on the plate A, and the front mold core A, the front mold core B and the front mold core C are uniformly distributed on the plate A according to 120 degrees; correspondingly, a rear die core C is arranged on the rotary table, and the rear die core A, the rear die core B and the rear die core C are uniformly distributed on the rotary table according to 120 degrees. Wherein, the two groups of the mold cores A/B are respectively used for forming the first component and the second component, the group of the mold cores C are used for replacing the positions after rotation, the interference of the protruding parts of the two groups of the mold cores A/B is avoided, and the balance in the cavity can be ensured.

The three-plate double-color mold comprises an in-mold rotating structure, and the turntable is controlled by the driving device to accurately rotate by 120 degrees. The mould benevolence on the back mould is all fixed on the carousel, and after first shaping, first part and second part are located respectively on front and back and the back mould, and rotatory carousel makes the part on the back mould rotate to the station of front mould part, makes it can carry out the secondary shaping after the compound die again, need not to place in appointed position after the manual work sample again, has also avoided the deviation of manual work in-process of placing and to the damage of product, has improved efficiency and product precision.

Further, an ejection structure is arranged below the rear mold core B and used for ejecting the secondary injection molding product on the rear mold core B. Specifically, the ejection structure is composed of fittings such as a thimble bottom plate, a thimble panel, a thimble, a screw, a spring and the like. The rear mould also comprises a B plate, and the B plate is positioned between the large gear and the turntable; the center of the B plate is provided with a containing hole for containing the central shaft, the B plate is provided with a plurality of pressing blocks around the turntable, and the pressing blocks are positioned on the side surface of the turntable; the carousel is installed in B board top, and the outside is spacing by the briquetting for the carousel can only rotate around the center pin.

Further, the front mold further comprises a panel, a hot runner plate and a water gap plate; the panel, the hot runner plate, the water gap plate and the A plate are sequentially stacked, and the first injection system and the second injection system are fixed on the hot runner plate. The front mold further comprises an automatic fastening component; the automatic fastening component comprises a draw hook, a sliding block and a buckling pin, wherein the draw hook is arranged on the hot runner plate, the sliding block is arranged on the A plate, a spring device which is convenient for forced resetting of the sliding block is arranged at the back of the sliding block, and the buckling pin is arranged on the turntable; the hot runner plate is fixed on the panel; the feed inlet of the first injection system is positioned on the panel, and the feed inlet of the second injection system is positioned on the side surface of the hot runner plate.

Further, the three-plate double-color mold further comprises a manipulator for plasma polarization treatment.

According to the three-plate double-color mold, after the first injection molding is finished by the first injection system, the replacement of the cavity is realized by the rotation of the turntable, a cavity area convenient for secondary molding is formed, and the filling of the cavity area is finished by the second injection system, so that the secondary molding effect is achieved, the injection molding and the assembly bonding of three parts can be realized, the working procedures of the prior art are reduced, and the efficiency is improved.

The three-plate double-color die disclosed by the invention has wide application field, and is suitable for automatic production of products which are assembled after being glued, hollow and required to be sealed.

Example 2

The three-plate double-color mold is used for automatically producing a cell counting plate, a cover plate can be left on the side of a rear mold in the one-time molding process, a bottom plate can be left on the side of a front mold, and an integral product is formed after the two-time molding. The whole structure of the three-plate double-color mold can be divided into a front mold and a rear mold; the rear mold structure comprises three cavities, a rotating structure, an ejection assembly, a B plate, a bottom plate and the like; the front mould comprises three cores, an A plate, two sets of runner systems and the like arranged on the front mould. The cavity and the core part are formed by three groups of mold cores, and pairing among different combinations can be completed through rotation, so that the molding of different parts (a bottom plate, a cover plate and a frame) is realized. In addition, the plasma spraying design is integrated in the manipulator, and the base plate and the cover plate after one-time molding can be polarized after the first mold opening.

Referring to fig. 1 to 12, the three-plate dual-color mold specifically includes a front mold 100, a rear mold 200, a driving mechanism, a manipulator, and a first injection system 9 and a second injection system 10; the driving mechanism is connected with the front die 100 and the rear die 200 and is used for driving the front die 100 and the rear die 200 to open and close; the manipulator is used for plasma polarization treatment.

The front mold 100 includes a face plate 11, a hot runner plate 12, a nozzle plate 13, an a plate 4, a front mold insert A1, a front mold insert B2, a front mold insert C3, and an auto-fastening assembly 5. The faceplate 11, the hot runner plate 12, the nozzle plate 13, and the a plate 4 are stacked. The hot runner plate 12 is fixed on the panel 11, and the first injection system 9 and the second injection system 10 are fixed on the hot runner plate 12.

The front mold core A1, the front mold core B2 and the front mold core C3 are arranged on the A plate 4 and are uniformly distributed on the A plate 4 according to 120 degrees. The front mold core A1, the front mold core B2 and the front mold core C3 are fixed on the A plate 4 and correspond to A, B, C stations of the three-plate double-color mold respectively.

The inlet of the first injection system 9 is located on the faceplate 11 and the inlet of the second injection system 10 is located on the side of the hot runner plate 12. The front mold core A1 and the front mold core B2 are respectively provided with a material injection port of the first injection system 9, and the material injection port of the second injection system 10 is positioned on the front mold core A1. The first injection system 9 is used for injecting glue into a hot runner turning point gate and is responsible for forming a cover plate and a bottom plate of a A, B station, and the second injection system 10 is responsible for forming a middle frame part, and the two systems are independently controlled and are not affected by each other.

The rear mold 200 includes a rear mold base 25, a gear mounting plate 24, a B plate 18, a turntable 17, a rear mold core a14, a rear mold core B15, a rear mold core C16, an ejector structure, and a driving device.

The rear mold core A14, the rear mold core B15 and the rear mold core C16 are arranged on the rotary table 17 and uniformly distributed on the rotary table 17 according to 120 degrees.

The driving means comprises a large gear 21, a central shaft, a reduction gear, a driving gear and a servo motor 20. The large gear 21 is positioned below the turntable 17, and a central shaft is fixedly connected with the centers of the large gear 21 and the turntable 17. The servo motor 20 is connected with a driving gear for driving the driving gear, and the large gear 21 is meshed with the driving gear through a reduction gear between the large gear 21 and the driving gear. The precise rotation of the turntable 17 is achieved by controlling the servo motor to drive the gears.

The gear mounting plate 24 is fixed to the rear die bottom plate 25, and the large gear 21 and the reduction gear are mounted on the gear mounting plate 25 through rotating shafts, so that the large gear 25 and the reduction gear are fixed at positions between the gear mounting plate 25 and the turntable 17.

The B plate 18 is positioned between the large gear and the turntable; the center of the B plate 18 is provided with a receiving hole, and the center shaft is sleeved in the receiving hole. The B plate 18 is provided with a plurality of pressing blocks 19 around the turntable, and the pressing blocks 19 are positioned on the side surface of the turntable 17; the turntable 17 is arranged above the B plate 18, and the outer side of the turntable 17 is limited by the pressing block 19, so that the turntable 17 can only rotate around the central shaft.

The ejection structure is arranged below the rear mold core B15, and specifically, the ejection structure is composed of an ejector pin bottom plate 22, an ejector pin panel 23, ejector pins, screws, springs and other accessories and is used for ejecting the cell counting plate formed on the rear mold core B15 for the second time. Specifically, the thimble is arranged between the thimble bottom plate and the panel, and is fixed together through screws, and the spring is arranged in the guide needle and is in a pre-pressing state. When the ejection action is started, a push force is applied to the ejector rod of the injection molding machine and the ejector rod bottom plate, the ejector rod is driven to eject the product, meanwhile, the spring is in a compressed state, after the product is taken out, the ejector rod is retracted to an initial position, and the ejector rod and the surface bottom plate are reset under the action of the spring.

In order to simplify the mold operation, cold runner portions of the two runner systems are concentrated in one mold opening, so that the automatic fastening assembly 5 is designed, and the front mold portion is not opened during the first mold opening and is opened again during the second mold opening. The automatic fastening component 5 comprises a draw hook 6, a sliding block 7 and a buckling pin 8, wherein the draw hook 6 is arranged on a hot runner plate 12, the sliding block 7 is arranged on an A plate 4, a spring device which is convenient for forced resetting of the sliding block 7 is arranged at the back of the sliding block 7, and the buckling pin 8 is arranged on a rotary disc 17. When the die is at the initial position, the sliding block 7 is sprung open and buckled into the drag hook 6, the drag hook 6 can buckle the A plate 4, the water gap plate 13, the hot runner plate 12 and the panel 11 together, after the die is opened for the first time, the rotary table of the rear die rotates for 120 degrees, the buckling pin 8 coincides with the hole position of the sliding block 7, and the sliding block 7 is separated from the drag hook 6, so that the front die part can be opened.

The front die core A1 and the rear die core A14 are matched to form a bottom plate injection cavity, and the front die core B2 and the rear die core B15 are matched to form a cover plate injection cavity; the first injection system 9 is respectively communicated with the bottom plate injection cavity and the cover plate injection cavity and is used for first injection molding of the cover plate and the bottom plate, and the die core C group plays a role in balancing and avoiding air. After the first injection molding is performed (as shown in fig. 9), the cover plate is located on the rear mold core B, the bottom plate is located on the front mold core a, and the manipulator can perform plasma polarization treatment on the cover plate on the rear mold core B15 and the bottom plate on the front mold core A1. The turntable 17 is driven by the servo motor 20 to rotate 120 degrees, the upper cover plate of the rear die core B15 is moved to the station A, the front die core A1 is overlapped with the rear die core B15, the front die core B and the front die core C are overlapped with the rear die core C and the rear die core A respectively (shown in figure 10), after die assembly (shown in figure 11), a second injection system 10 is communicated with a frame injection cavity formed after the cover plate and the bottom plate are spliced, the second injection system is used for injection molding a frame between the cover plate and the bottom plate, and after die opening is carried out, the cell counting plate 300 positioned on the rear die core B is obtained; at this time, the ejection structure is at the station a and coincides with the station ejector rod, thereby realizing the ejection action of the cell counting plate 300.

The three-plate double-color mold for automatic production of the cell counting plate comprises an in-mold rotating structure, and a turntable is controlled by a servo motor to accurately rotate by 120 degrees; the die core of back mould side is all fixed on the carousel, after first shaping, and the carousel rotates and makes apron rotatory to A station, can carry out the secondary shaping after the compound die, in addition, with plasma spraying design integration in the manipulator, carries out polarization to apron and bottom plate after the first time die sinking, need not to place in appointed position after the manual work sample again, has also avoided the deviation of manual work in-process of placing and to the damage of product, has improved efficiency and product precision.

The die core is designed into three groups A, B, C, wherein two groups A, B are respectively used for forming the cover plate and the bottom plate, and the group C is used for replacing the position after rotation, so that the interference of the protruding part of the die core is avoided, and the balance in the die cavity can be ensured. By the design mode, the size of the die can be saved, the waste of space is reduced, the inter-fit groups are reduced, and the requirement can be met by four groups of die cores according to the conventional design mode; meanwhile, the die core is arranged on the outer side, so that the die can be conveniently disassembled.

Example 3

The cell counting plate as shown in fig. 13 to 15, comprising a cover plate 301 and a bottom plate 303, wherein the cover plate 301 is arranged on the bottom plate 303 and forms a functional area of a cavity structure in the cell counting plate, and a front end hole and a rear end hole which are positioned above the functional area are arranged on the cover plate 301; the cell counting plate is internally provided with a frame injection molding groove, the frame injection molding groove is arranged around the cavity structure, an injection molding frame 302 is arranged in the frame injection molding groove, and the frame 302 is positioned between the cover plate 301 and the bottom plate 303 and is used for bonding the cover plate 301 and the bottom plate 303.

Specifically, the cell counting plate of this embodiment is a six-channel cell counting plate, that is, six functional areas are arranged on the cell counting plate, and the frame injection molding grooves surrounding the functional areas are mutually communicated.

Further, the cross-sectional shape of the frame molding groove is an ellipse with a tail directed toward the functional area (as shown in fig. 15).

Preferably, PMMA is used as the material of the cover plate 301, the frame 302 and the bottom plate 303 in this embodiment.

The cell counting plate is disassembled into a bottom plate and a cover plate in the prior mode, a frame injection molding groove is additionally formed on the bottom plate, the bottom plate and the cover plate with required structures are formed after first molding through the selection of a mold core and a mold cavity, then plasma is sprayed by a mechanical arm, secondary molding is performed, glue stock is injected into the frame injection molding groove, and the bottom plate and the cover plate are welded into a whole.

The cell counting plate of this example can be prepared using the three-plate bicolor mold of example 2.

Station description: the front die and the rear die of the die station A, B, C are consistent, the front die core A, the front die core B, the front die core C, the rear die core A, the rear die core B and the die core C are respectively arranged at the corresponding die stations when the die is installed. Before forming, the initial positions of the rear mold core A, the rear mold core B and the mold core C are at the corresponding stations A, B and C, after one-time forming, the plasma spraying is finished by a manipulator, then the positions of the rear mold core A, the rear mold core B and the mold core C are changed under the action of a turntable, and the stations A, B and C are respectively rotated to the corresponding stations.

During the first molding, the die core A group is used for molding the bottom plate, the bottom plate is remained on the front die core A, the die core B group is used for molding the cover plate, and the cover plate is remained on the rear die core B. In the second molding, the front mold core A is overlapped with the rear mold core B and is used for molding the frame part, and the front mold core B and the front mold core C are overlapped with the rear mold core C and the rear mold core A respectively and do not participate in molding, so that the balance effect is achieved.

The cell counting plate is changed into the upper, middle and lower parts on the aspect of not changing the appearance and functional structure of the product, is convenient for subsequent secondary molding, realizes the welding and assembly of the upper and lower parts by utilizing a secondary injection molding technology, forms a hollow structure, realizes the separation and sealing of each functional area by adjusting the product structure, avoids the problem of tissue fluid overflow during use, and simultaneously integrates plasma equipment in an external manipulator to be matched with a die so as to realize in-die polarization treatment. The cell counting plate does not need to manually take out the cover plate and the bottom plate to carry out viscose treatment in the production process, so that the production efficiency of the product can be improved, and the manpower and material resources are saved.

Example 4

The cell counting plate shown in fig. 16 and 17 includes a cover plate 304, a frame 305 and a bottom plate 306, and is different from the cell counting plate of embodiment 3 in that the cross-sectional shape of the injection molding groove of the frame is elliptical (as shown in fig. 17), and the frame 305 is made of transparent TPE, and other structures are the same.

It will be appreciated that based on the structural changes of the cytometer plate cover 304 and/or base 306, the cavities and cores used to injection mold the cover and/or base in the present embodiment will also correspondingly change.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. The three-plate double-color mold is characterized by comprising a front mold, a rear mold, a driving mechanism, a first injection system and a second injection system;

the front die comprises a plate A, a front die core B and a front die core C; the front mold core A, the front mold core B and the front mold core C are uniformly distributed on the plate A according to 120 degrees;

the rear die comprises a rotary disc, a rear die core A, a rear die core B, a front die core C and a driving device; the rear mold core A, the rear mold core B and the rear mold core C are uniformly distributed on the turntable according to 120 degrees; the driving device is connected with the turntable and used for driving the turntable to rotate;

the front mold core A and the rear mold core A are matched to form a first component injection cavity, and the front mold core B and the rear mold core B are matched to form a second component injection cavity;

the first injection system is respectively communicated with the first component injection cavity and the second component injection cavity and is used for injection molding the first component and the second component; the second injection system is communicated with an injection cavity of the bonding part formed after the first part and the second part are spliced, and is used for injection molding the bonding part between the first part and the second part;

the driving mechanism is connected with the front die and the rear die and is used for driving the front die and the rear die to open and close.

2. The three-plate dual-color mold of claim 1, wherein the back mold further comprises an ejection structure, the ejection structure is disposed below the back mold core B, and is used for ejecting the secondary injection molding product on the back mold core B.

3. The three-plate bi-color mold of claim 1, wherein the driving means comprises a large gear, a central shaft, a driving gear and a servo motor; the large gear is positioned below the turntable, and the central shaft is fixedly connected with the centers of the large gear and the turntable; the large gear is connected with the driving gear in a meshed manner; the servo motor is connected with the driving gear and used for driving the driving gear.

4. The three-plate two-color mold according to claim 1, wherein the front mold further comprises a face plate, a hot runner plate, a nozzle plate and an a plate; the panel, the hot runner plate, the water gap plate and the A plate are sequentially stacked, the first injection system and the second injection system are fixed on the hot runner plate, a feed inlet of the first injection system is positioned on the panel, and a feed inlet of the second injection system is positioned on the side face of the hot runner plate.

5. The three-plate bi-color mold of claim 4, wherein said front mold further comprises an auto-fastening assembly; the automatic fastening component comprises a draw hook, a sliding block and a buckling pin, wherein the draw hook is arranged on the hot runner plate, the sliding block is arranged on the A plate, a spring device which is convenient for forced resetting of the sliding block is arranged at the back of the sliding block, and the buckling pin is arranged on the turntable.

6. The three-plate bi-color mold of any one of claims 1-5, further comprising a robot for plasma polarization treatment.

7. The cell counting plate is characterized by comprising a cover plate and a bottom plate, wherein the cover plate is arranged on the bottom plate and forms a functional area of a cavity structure in the cell counting plate, and a front end hole and a rear end hole which are positioned above the functional area are formed in the cover plate; the cell counting plate is internally provided with a frame injection molding groove, an injection molding frame is arranged in the frame injection molding groove, and the frame is positioned between the cover plate and the bottom plate and used for bonding the cover plate and the bottom plate.

8. The cell counter plate of claim 7 wherein the cross-sectional shape of the frame injection molded slot is oval or oval with a tail directed toward the functional area.

9. The cell counter plate of claim 8 wherein said frame molding groove is disposed around said cavity structure.

10. A cell counter plate according to any one of claims 7 to 9, prepared using a three-plate bi-colour mould according to any one of claims 1 to 6.