Injection mold for batch production of PCR centrifugal tubes

Abstract

The invention relates to an injection mold for batch production of PCR centrifugal tubes. The injection mold comprises an injection molding outer structure unit and an injection molding unit installed on the inner side of the injection molding outer structure unit. The injection molding outer structural part sequentially comprises an upper cover plate, an upper injection molding part mounting plate, a lower injection molding part mounting plate, a supporting frame mounting plate, a cooling plate, an upper injection molding cavity mounting plate and a lower injection molding cavity mounting plate from top to bottom. The injection molding unit sequentially comprises an injection molding structural part, a cooling cavity plate, an upper injection molding cavity plate and a lower injection molding cavity plate from top to bottom. By means of the centrifugal tube injection molding machine, batch injection molding machining production of centrifugal tubes can be achieved, the produced centrifugal tubes are evenly arranged according to the specific layout, and follow-up discharging treatment of products is facilitated; injection molding of the tube body and the upper cover of the centrifugal tube can be synchronously achieved and can be completed at a time, and the production and processing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field related to injection molding processing molds, and in particular to an injection mold for batch production of PCR centrifuge tubes. Background Art

[0002] A mold refers to a mold or tool that uses external force to form a blank into a specific shape and size through methods such as injection molding, extrusion, and die-casting. Molds are classified according to their materials into hardware molds, plastic molds, and special molds. Driven by high technology and the application needs of pillar industries, plastic molds have formed a huge industrial chain from raw and auxiliary material industries and processing and testing equipment to machinery, automobiles, home appliances, building materials and other industries. Plastic molds are made by injecting molten plastic into a molding cavity, and after cooling and shaping, an ejection system ejects the product out of the mold cavity.

[0003] At present, PCR reaction technology is indispensable in molecular biology research and medical clinical diagnosis. PCR reaction, or polymerase chain reaction (PCR), is a method for rapid in vitro amplification of specific genes or DNA sequences, so it is also called in vitro gene amplification. After several cycles of denaturation, annealing and extension of two oligonucleotide primers on both sides of the DNA fragment to be amplified, the DNA is amplified by 2 square times. In order to amplify in batches, PCR reaction plates are often used in PCR reactions.

[0004] After a massive search, it was found that the Chinese patent announcement number is CN221437103U, which discloses a stacking mold for cell culture bottles, including an upper fixed plate, a front mold cavity plate, a rear mold cavity plate, a lower fixed plate and a sixth mold plate stacked together from top to bottom, and a crimping drive mechanism. The utility model has a structure in which multiple mold plates are stacked together and has two processing cavities, which can complete the processing of two types of products at one time; during the stacking process, the upper fixed plate and the sixth mold plate of the utility model are stacked together with the middle rear mold cavity plate through the guide mechanism of the gear plate and the gear, respectively, which has a good guiding effect.

[0005] After massive searches, it was found that the Chinese patent announcement number is CN103991165B, which discloses a PCR plate injection molding method, including the following steps: A. preparing a PCR plate frame; B. forming a PCR plate cavity in a molding mold, so that the PCR plate cavity has a PCR plate frame cavity, a connecting plate cavity, and multiple reaction tube cavities, and placing the prepared PCR plate frame in the PCR plate frame cavity; C. injecting molten plastic raw materials from the connecting plate cavity into the PCR plate cavity to form a PCR plate, the water inlet of the prepared PCR plate is located on the inner side of the connecting plate, and there is no water inlet on the reaction tube, thereby improving the surface quality and performance of the product, the reaction tube surface is smooth and neat, the size is stable, and the light transmission effect is good, so that the sample reaction in the reaction tube can be well observed, and the product detection effect is improved. In addition, the mold requires relatively few glue inlets, which simplifies the mold structure, has high production efficiency, fewer product water inlets, low production costs, and saves raw materials.

[0006] In summary, when processing injection molded parts, existing injection molds can generally only realize the production of single product structures and cannot be mass-produced at one time; in addition, they can generally only produce products in separate structures and then integrate them through other processes after injection molding.

[0007] In view of the above-mentioned defects, the designers actively carried out research and innovation in order to create an injection mold for mass production of PCR centrifuge tubes to make it more valuable for industrial use. Summary of the invention

[0008] In order to solve any of the above technical problems, the purpose of the present invention is to provide an injection mold for mass production of PCR centrifuge tubes.

[0009] To achieve the above object, the present invention adopts the following technical solution:

[0010] An injection mold for mass production of PCR centrifuge tubes, comprising an injection molding outer structural unit and an injection molding unit installed inside the injection molding outer structural unit;

[0011] The injection molding external structural parts include, from top to bottom, an upper cover plate, an upper injection molding mounting plate, a lower injection molding mounting plate, a support frame mounting plate, a cooling plate, an upper injection molding cavity mounting plate, and a lower injection molding cavity mounting plate;

[0012] The injection molding unit includes an injection molding structure, a cooling cavity plate, an upper injection molding cavity plate and a lower injection molding cavity plate from top to bottom;

[0013] The injection molding structural part includes an injection molding cavity plate, an injection molding main pipeline is arranged at the middle position of the top of the injection molding cavity plate, and a plurality of injection molding branch pipelines are arranged at the bottom of the injection molding cavity plate. The injection molding cavity plate is installed in the lower injection molding component mounting plate, the top of the injection molding main pipeline passes through the upper injection molding component mounting plate and is connected to the upper injection molding hole located in the middle of the upper cover plate, and the bottom of the injection molding branch pipeline passes through the cooling molding cavity plate and is connected to the injection molding guide frame below;

[0014] The two upper injection molding cavity plates and the lower injection molding cavity plate below form a group, and a plurality of upper injection molding cavity mounting grooves are evenly distributed along the left-right direction in the upper injection molding cavity mounting plate, and the two upper injection molding cavity plates are arranged side by side in the same upper injection molding cavity mounting groove along the left-right direction, and a plurality of lower injection molding cavity plate mounting grooves are evenly distributed along the left-right direction on the top of the lower injection molding cavity mounting plate, and the lower injection molding cavity plate is located in the lower injection molding cavity plate mounting groove;

[0015] A plurality of centrifuge tube upper injection molding cavities are opened on the upper injection molding cavity plate, a centrifuge tube lower injection molding cavity matched with the above-mentioned centrifuge tube upper injection molding cavity is opened on the lower injection molding cavity plate directly below the centrifuge tube upper injection molding cavity, the centrifuge tube upper injection molding cavity and the centrifuge tube lower injection molding cavity are used together for injection molding to form the centrifuge tube, a centrifuge tube cover injection molding cavity is opened on the lower injection molding cavity plate outside the centrifuge tube lower injection molding cavity, the centrifuge tube cover injection molding cavity is used for injection molding to form the centrifuge tube cover, and the injection molding guide frame is connected to the centrifuge tube upper injection molding cavity below.

[0016] As a further improvement of the present invention, a lower lifting plate, a lower lifting mounting plate, a lower support plate and a lower cover plate are sequentially arranged from top to bottom below the lower injection molding cavity mounting plate, a guide plate is arranged below the lower injection molding cavity plate, and a plurality of guide plate mounting grooves are evenly distributed along the left and right directions at the bottom of the lower injection molding cavity mounting plate. The guide plate is installed in the guide plate mounting groove, a support tube is installed on the guide plate directly below the lower injection molding cavity of the centrifuge tube, and a lifting structure is installed on the lower lifting mounting plate. The lifting structure drives the upper lower lifting plate to move in the vertical direction, and a lifting rod is installed on the lower lifting plate directly below the support tube. The lifting rod passes through the support tube from bottom to top and can continue to extend to the top.

[0017] As a further improvement of the present invention, side plates are installed on the front and rear outer sides between the lower injection cavity mounting plate and the lower cover plate.

[0018] As a further improvement of the present invention, a working platform is installed at the bottom of the lower cover plate, and platform columns are installed on all four sides of the working platform.

[0019] As a further improvement of the present invention, an elastic structure is installed between the lower lifting plate and the lower injection cavity mounting plate, and the elastic structure is a compression spring.

[0020] As a further improvement of the present invention, a guide column is installed between the guide plate and the lower support plate.

[0021] As a further improvement of the present invention, a sealing ring is provided between the lifting block at the top of the lifting rod and the upper support tube, and the part of the support tube above the lifting block at the top of the lifting rod is connected to an external air source.

[0022] As a further improvement of the present invention, a pressurizing mechanism is installed on the injection molding cavity plate just above the injection molding branch pipeline.

[0023] As a further improvement of the present invention, a plurality of support rods are arranged above the injection molding guide frame, the plurality of support rods are evenly distributed at the bottom of the support frame, and the support frame is mounted on a support frame mounting plate.

[0024] As a further improvement of the present invention, the cooling cavity plate is installed in the cooling plate, and a cooling pipe for cooling the upper injection molding cavity plate and the lower injection molding cavity plate is installed in the cooling cavity plate. The cooling pipe has a serpentine structure and is distributed on the outside of the injection molding cavity of the centrifuge tube.

[0025] By means of the above scheme, the present invention has at least the following advantages:

[0026] The present invention can realize the injection molding production of centrifuge tubes in batches, and the centrifuge tubes after production are installed in a specific layout and evenly arranged, which is convenient for subsequent material processing of the products;

[0027] The present invention realizes the injection molding of the centrifuge tube body and the upper cover simultaneously, which can be completed at one time, thereby improving the production and processing efficiency;

[0028] The centrifuge tube of the present invention can be conveniently lifted and unloaded after injection molding, and the operation method is convenient and efficient.

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a structural schematic diagram of an injection mold for mass production of PCR centrifuge tubes of the present invention;

[0032] Figure 2 yes Figure 1 Schematic diagram of the structure of the injection molding unit;

[0033] Figure 3 yes Figure 2 Schematic diagram of the layout of the upper injection mold cavity plate and the lower injection mold cavity plate;

[0034] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle and upper injection mold cavity plate;

[0035] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle and lower injection mold cavity plate;

[0036] Figure 6 yes Figure 1 Schematic diagram of the structure of the middle and lower injection cavity mounting plate;

[0037] Figure 7 yes Figure 6 The structural diagram of the other side;

[0038] Figure 8 yes Figure 2 A schematic diagram of the local structure after removing part of the cooling cavity plate, the upper injection cavity plate and the lower injection cavity plate;

[0039] Fig. 9 is a schematic diagram of a PCR centrifuge tube processed by the present invention;

[0040] Fig.10 yes Fig. 9 Schematic diagram of one of the centrifuge tubes and the centrifuge tube cap.

[0041] The meanings of the various reference numerals in the figures are as follows.

[0042] Upper cover plate 1, upper injection molding mounting plate 2, lower injection molding mounting plate 3, support frame mounting plate 4, cooling plate 5, upper injection molding cavity mounting plate 6, lower injection molding cavity mounting plate 7, lower jacking plate 8, lower jacking mounting plate 9, lower support plate 10, lower cover plate 11, side plate 12, upper injection molding hole 13, working platform 14, injection molding main pipeline 15, injection molding cavity plate 16, pressurizing mechanism 17, injection molding branch pipeline 18, support frame 19, support rod 20, cooling cavity plate 21, upper injection molding cavity plate 22, lower injection molding cavity plate 23, guide plate 24, jacking rod 25, guide column 26, upper injection molding cavity 27 of centrifuge tube, lower injection molding cavity 28 of centrifuge tube, injection molding cavity 29 of centrifuge tube cover, lower injection molding cavity plate mounting groove 30, guide plate mounting groove 31, injection molding guide frame 32, centrifuge tube 33, centrifuge tube cover 34, support cylinder 35. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, rather than all the embodiments. The components of the embodiment of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiment of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0045] Example

[0046] like Figures 1 to 10 As shown,

[0047] An injection mold for mass production of PCR centrifuge tubes comprises an injection molding outer structural unit and an injection molding unit installed inside the injection molding outer structural unit.

[0048] 1. The injection molding external structural parts include, from top to bottom, an upper cover plate 1, an upper injection molding mounting plate 2, a lower injection molding mounting plate 3, a support frame mounting plate 4, a cooling plate 5, an upper injection molding cavity mounting plate 6 and a lower injection molding cavity mounting plate 7.

[0049] 2. The injection molding unit includes an injection molding structure, a cooling cavity plate 21, an upper injection molding cavity plate 22 and a lower injection molding cavity plate 23 from top to bottom.

[0050] 1. The injection molding structure includes an injection molding cavity plate 16, an injection molding main pipeline 15 is arranged at the middle position of the top of the injection molding cavity plate 16, and a plurality of injection molding branch pipelines 18 are arranged at the bottom of the injection molding cavity plate 16. The injection molding cavity plate 16 is installed in the lower injection molding component mounting plate 3. The top of the injection molding main pipeline 15 passes through the upper injection molding component mounting plate 2 and is connected to the upper injection molding hole 13 located in the middle of the upper cover plate 1. The bottom of the injection molding branch pipeline 18 passes through the cooling cavity plate 21 and is connected to the injection molding guide frame 32 below.

[0051] 2. The two upper injection molding cavity plates 22 and the lower injection molding cavity plate 23 below are a group. A plurality of upper injection molding cavity mounting grooves are evenly distributed along the left-right direction in the upper injection molding cavity mounting plate 6. The two upper injection molding cavity plates 22 are located side by side in the same upper injection molding cavity mounting groove along the left-right direction. A plurality of lower injection molding cavity plate mounting grooves 30 are evenly distributed along the left-right direction on the top of the lower injection molding cavity mounting plate 7. The lower injection molding cavity plate 23 is located in the lower injection molding cavity plate mounting groove 30.

[0052] 3. A plurality of centrifuge tube upper injection molding cavities 27 are provided on the upper injection molding cavity plate 22, a centrifuge tube lower injection molding cavity 28 matched with the above-mentioned centrifuge tube upper injection molding cavity 27 is provided on the lower injection molding cavity plate 23 directly below the centrifuge tube upper injection molding cavity 27, the centrifuge tube upper injection molding cavity 27 and the centrifuge tube lower injection molding cavity 28 are used together for injection molding to form a centrifuge tube 33, a centrifuge tube cover injection molding cavity 29 is provided on the lower injection molding cavity plate 23 outside the centrifuge tube lower injection molding cavity 28, the centrifuge tube cover injection molding cavity 29 is used for injection molding to form a centrifuge tube cover 34, and the injection molding guide frame 32 is connected to the centrifuge tube upper injection molding cavity 27 below.

[0053] 4. A pressurizing mechanism 17 is installed on the injection cavity plate 16 directly above the injection branch pipe 18. The pressurizing mechanism 17 here is a hydraulic motor or a pressurizing structure connected to an external compressed air source. The pressurizing mechanism 17 can increase the utilization efficiency of the injection material and improve the work efficiency of the injection molding.

[0054] 5. A plurality of support rods 20 are arranged above the injection molding flow guide frame 32, and the plurality of support rods 20 are evenly distributed at the bottom of the support frame 19, and the support frame 19 is mounted on the support frame mounting plate 4. The plurality of support rods 20 are used to perform top support processing on the injection molding flow guide frame 32 to ensure the position of the injection molding flow guide frame 32.

[0055] 6. The cooling cavity plate 21 is installed in the cooling plate 5. A cooling pipe for cooling the upper injection cavity plate 22 and the lower injection cavity plate 23 is installed in the cooling cavity plate 21. The cooling pipe has a serpentine structure and is distributed on the outside of the injection cavity 27 of the centrifuge tube. The upper injection cavity plate 22 and the lower injection cavity plate 23 after injection molding are cooled by the cooling pipe in the cooling cavity plate 21.

[0056] 3. Below the lower injection cavity mounting plate 7, a lower lift plate 8, a lower lift mounting plate 9, a lower support plate 10 and a lower cover plate 11 are arranged in sequence from top to bottom.

[0057] 1. A guide plate 24 is arranged below the lower injection molding cavity plate 23. A plurality of guide plate mounting grooves 31 are evenly distributed along the left-right direction at the bottom of the lower injection molding cavity mounting plate 7. The guide plate 24 is mounted in the guide plate mounting groove 31. A support cylinder 35 is mounted on the guide plate 24 directly below the lower injection molding cavity 28 of the centrifuge tube. A lifting structure is mounted on the lower lifting mounting plate 9. The lifting structure drives the upper lower lifting plate 8 to move in the vertical direction. A lifting rod 25 is mounted on the lower lifting plate 8 directly below the support cylinder 35. The lifting rod 25 passes through the support cylinder 35 from bottom to top and can continue to extend to the top.

[0058] 2. Side plates 12 are installed on the front and rear outer sides between the lower injection cavity mounting plate 7 and the lower cover plate 11. The two side plates 12 are used to protect the inner lifting components.

[0059] 3. A working platform 14 is installed at the bottom of the lower cover plate 11, and platform columns are installed around the working platform 14. The working platform 14 can be used to facilitate docking of the entire device with other external equipment, or fixed installation when used alone.

[0060] 4. An elastic structure is installed between the lower lifting plate 8 and the lower injection cavity mounting plate 7. The elastic structure is a compression spring or other structural parts with elastic functions similar to those of a compression spring.

[0061] 5. A guide column 26 is installed between the guide plate 24 and the lower support plate 10.

[0062] 6. The lifting block at the top of the lifting rod 25 is sealed with the support tube 35 above by a sealing ring, and the part of the support tube 35 above the lifting block at the top of the lifting rod 25 is connected to the external air source. When the injection molded product needs to be lifted, the external air source can be introduced into the support tube 35 first, and then the product can be initially removed from the injection mold, and then the lifting process is performed through the lifting rod 25, so as to avoid the adverse effects of the direct lifting process of the lifting rod 25 on the injection molded product.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An injection mold for mass production of PCR centrifuge tubes, comprising an injection molding outer structure unit and an injection molding unit installed inside the injection molding outer structure unit; Features: The injection molding external structural parts include, from top to bottom, an upper cover plate (1), an upper injection molding component mounting plate (2), a lower injection molding component mounting plate (3), a support frame mounting plate (4), a cooling plate (5), an upper injection molding cavity mounting plate (6) and a lower injection molding cavity mounting plate (7); The injection molding unit comprises, from top to bottom, an injection molding structure, a cooling cavity plate (21), an upper injection molding cavity plate (22) and a lower injection molding cavity plate (23); The injection molding structural component comprises an injection molding cavity plate (16), an injection molding main pipeline (15) is arranged at the middle position of the top of the injection molding cavity plate (16), and a plurality of injection molding branch pipelines (18) are arranged at the bottom of the injection molding cavity plate (16). The injection molding cavity plate (16) is installed in the lower injection molding component mounting plate (3), the top of the injection molding main pipeline (15) passes through the upper injection molding component mounting plate (2) and is connected to the upper injection molding hole (13) located in the upper middle part of the upper cover plate (1), and the bottom of the injection molding branch pipeline (18) passes through the cooling cavity plate (21) and is connected to the injection molding guide frame (32) below; The two upper injection molding cavity plates (22) and a lower injection molding cavity plate (23) below form a group, a plurality of upper injection molding cavity mounting grooves are evenly distributed along the left-right direction in the upper injection molding cavity mounting plate (6), the two upper injection molding cavity plates (22) are arranged side by side in the same upper injection molding cavity mounting groove along the left-right direction, a plurality of lower injection molding cavity plate mounting grooves (30) are evenly distributed along the left-right direction on the top of the lower injection molding cavity mounting plate (7), and the lower injection molding cavity plate (23) is located in the lower injection molding cavity plate mounting groove (30); A plurality of centrifuge tube upper injection molding cavities (27) are provided on the upper injection molding cavity plate (22); a centrifuge tube lower injection molding cavity (28) adapted to the centrifuge tube upper injection molding cavity (27) is provided on the lower injection molding cavity plate (23) directly below the centrifuge tube upper injection molding cavity (27); the centrifuge tube upper injection molding cavity (27) and the centrifuge tube lower injection molding cavity (28) are used together to form a centrifuge tube (33) by injection molding; a centrifuge tube cover injection molding cavity (29) is provided on the lower injection molding cavity plate (23) outside the centrifuge tube lower injection molding cavity (28); the centrifuge tube cover injection molding cavity (29) is used to form a centrifuge tube cover (34) by injection molding; and the injection molding flow guide frame (32) is connected to the centrifuge tube upper injection molding cavity (27) below.

2. An injection mold for mass production of PCR centrifuge tubes as claimed in claim 1, characterized in that: A lower lifting plate (8), a lower lifting mounting plate (9), a lower supporting plate (10) and a lower cover plate (11) are arranged in order from top to bottom below the lower injection molding cavity mounting plate (7); a guide plate (24) is arranged below the lower injection molding cavity plate (23); a plurality of guide plate mounting grooves (31) are evenly distributed at the bottom of the lower injection molding cavity mounting plate (7) along the left-right direction; the guide plate (24) is installed in the guide plate mounting groove (31); a support cylinder (35) is installed on the guide plate (24) directly below the lower injection molding cavity (28) of the centrifuge tube; a lifting structure is installed on the lower lifting mounting plate (9); the lifting structure drives the upper lower lifting plate (8) to move in the vertical direction; a lifting rod (25) is installed on the lower lifting plate (8) directly below the support cylinder (35); the lifting rod (25) passes through the support cylinder (35) from bottom to top and can continue to extend to the top.

3. An injection mold for mass production of PCR centrifuge tubes as claimed in claim 2, characterized in that: Side plates (12) are installed on the front and rear outer sides between the lower injection cavity mounting plate (7) and the lower cover plate (11).

4. The injection mold for mass production of PCR centrifuge tubes according to claim 2, characterized in that: A working platform (14) is installed at the bottom of the lower cover plate (11), and platform columns are installed on all four sides of the working platform (14).

5. The injection mold for mass production of PCR centrifuge tubes according to claim 2, characterized in that: An elastic structure is installed between the lower lifting plate (8) and the lower injection cavity mounting plate (7), and the elastic structure is a compression spring.

6. The injection mold for mass production of PCR centrifuge tubes according to claim 2, characterized in that: A guide column (26) is installed between the guide plate (24) and the lower support plate (10).

7. An injection mold for mass production of PCR centrifuge tubes as claimed in claim 2, characterized in that: A sealing ring is provided between the lifting block at the top of the lifting rod (25) and the upper support tube (35), and the part of the support tube (35) above the lifting block at the top of the lifting rod (25) is connected to an external air source.

8. The injection mold for mass production of PCR centrifuge tubes according to claim 1, characterized in that: A pressurizing mechanism (17) is installed on the injection mold cavity plate (16) directly above the injection branch pipe (18).

9. The injection mold for mass production of PCR centrifuge tubes according to claim 1, characterized in that: A plurality of support rods (20) are arranged above the injection molding flow guide frame (32), and the plurality of support rods (20) are evenly distributed at the bottom of a support frame (19), and the support frame (19) is mounted on a support frame mounting plate (4).

10. The injection mold for mass production of PCR centrifuge tubes according to claim 1, characterized in that: The cooling cavity plate (21) is installed in the cooling plate (5), and a cooling pipeline for cooling the upper injection cavity plate (22) and the lower injection cavity plate (23) is installed in the cooling cavity plate (21). The cooling pipeline has a serpentine structure and is distributed on the outer side of the injection cavity (27) of the centrifuge tube.

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