Processing device for pipette tip with filter element

Abstract

The utility model discloses a pipette tip machining device with a filter element, and belongs to the technical field of pipette tip machining, the pipette tip machining device comprises a fixed mold plate, a push mold plate, a movable mold plate, a fixed mold fixing plate and a movable mold fixing plate, mounting holes and positioning holes are coaxially formed in the fixed mold plate, the push mold plate and the movable mold plate, a first positioning column is fixedly embedded in the positioning hole in the fixed mold plate, and a second positioning column is fixedly embedded in the positioning hole in the movable mold plate. A first positioning column is fixedly embedded in a positioning hole of the mold pushing plate, a second positioning column is fixedly embedded in a positioning hole of the mold pushing plate, a third positioning column is fixedly embedded in a positioning hole of the movable mold plate, the first positioning column, the second positioning column and the third positioning column are sequentially connected in a nested mode, and a first cavity sleeve is fixedly embedded in a mounting hole of the mold pushing plate; a second cavity sleeve is fixedly embedded in the mounting hole of the movable mold plate; and a mold needle is fixedly embedded in the mounting hole of the fixed mold plate. According to the die assembly device, the die assembly accuracy of all the die plates can be effectively guaranteed, the coaxiality of the die needle, the first cavity sleeve and the second cavity sleeve is guaranteed, the wall thickness of the produced suction head is uniform, and the production quality of the suction head can be improved.

Description

Technical Field

[0001] This application relates to the field of pipette tip processing technology, and more specifically, to a pipette tip processing device with a filter cartridge. Background Technology

[0002] The suction tip is generally a needle-shaped structure. Inside the suction tip, there is a suction chamber that runs through both ends of the tip. The smaller end is the suction end, and the larger end is the mounting end for mounting on a pipette. Suction tips are mostly produced using multi-cavity injection molds. A multi-cavity injection mold for suction tips generally includes a moving mold, a moving mold fixing plate, a fixed mold, a fixed mold fixing plate, and a push mold. A mold needle is installed on the moving mold, and mold cavities are opened on the fixed mold and the push mold. During injection molding, the mold is installed on the injection molding machine, the mold is closed to form an injection cavity, and the suction tip is formed by injecting molded material into the injection cavity.

[0003] However, some existing molds directly open the mold cavities on the moving mold, fixed mold, and moving mold, which may result in poor coaxiality of the two mold cavities when the mold is closed. As a result, after the mold needle extends into the closed mold cavity, it may be biased to one side of the mold cavity, which will cause uneven wall thickness of the suction head and poor production quality. Utility Model Content

[0004] To address the aforementioned problems, this application provides a pipette tip processing device with a filter element, employing the following technical solution:

[0005] A pipette tip processing device with a filter element includes a fixed template, a pushing template, a moving template, a fixed template fixing plate, and a moving template fixing plate. The fixed template, pushing template, and moving template are coaxially provided with mounting holes and positioning holes. The fixed template and moving template fixing plates are provided with correspondingly distributed fixing holes. A first positioning post is fixedly embedded in the positioning hole of the fixed template, and the end of the first positioning post is fixedly embedded in the fixing hole of the fixed template fixing plate. A second positioning post is fixedly embedded in the positioning hole of the pushing template, and a third positioning post is fixedly embedded in the positioning hole of the moving template, and the end of the third positioning post is fixedly embedded in the fixing hole of the moving template fixing plate. The first, second, and third positioning posts are nested together sequentially. A first cavity sleeve is fixedly embedded in the mounting hole of the pushing template, a second cavity sleeve is fixedly embedded in the mounting hole of the moving template, and a mold needle is fixedly embedded in the mounting hole of the fixed template. The mold needle is correspondingly adapted to the first and second cavity sleeves. The moving template fixing plate is provided with an injection hole communicating with the second cavity sleeve.

[0006] By adopting the above technical solution, the mounting holes and positioning holes are all opened coaxially and integrally, which can effectively ensure the coaxiality of the mold pin with the first cavity sleeve and the second cavity sleeve during mold closing, thereby ensuring that the wall thickness of the injection suction head is relatively uniform.

[0007] Furthermore, the positioning holes are provided in four sets, and the four sets of positioning holes are distributed in a rectangular array with respect to the mounting holes. Each set of positioning holes is provided with a first positioning post, a second positioning post, and a third positioning post.

[0008] Furthermore, the top ends of the first and second positioning posts are provided with grooves, and the bottom ends of the second and third positioning posts are provided with protrusions that fit the grooves.

[0009] By adopting the above technical solution, during mold closing, the protrusion of the second positioning post engages with the groove of the first positioning post, and the protrusion of the third positioning post engages with the groove of the second positioning post, thereby ensuring the accuracy of mold closing of each template and improving the production quality of the suction head.

[0010] Furthermore, a first heat-conducting groove is provided on the side of the push template near the moving template. The first heat-conducting groove is arranged around the mounting hole on the push template, and a first heat-conducting sheet is fixedly embedded in the first heat-conducting groove.

[0011] By adopting the above technical solution, after the molten material injection molding is completed, the first heat-conducting sheet can efficiently conduct heat from the injection cavity near the first cavity sleeve.

[0012] Furthermore, a water-cooling tank is provided at the opening of the first heat-conducting tank, and a water-cooling pipe is installed in the water-cooling tank.

[0013] By adopting the above technical solution, the water-cooling pipe is set in contact with the first heat-conducting plate, and the coolant circulates and guides the coolant in the water-cooling pipe, which can effectively remove the heat from the first heat-conducting plate, thereby promoting the rapid cooling of the injection molten material near the first cavity sleeve.

[0014] Furthermore, a second heat-conducting groove is provided on the side of the moving template near the pushing template. The second heat-conducting groove is arranged around the mounting hole on the moving template, and a heat-conducting mechanism is provided inside the second heat-conducting groove.

[0015] By adopting the above technical solution, the heat conduction mechanism is used to conduct heat from the injection cavity near the second cavity sleeve.

[0016] Furthermore, the heat conduction mechanism includes a second heat conduction sheet fixedly embedded in the top wall of the second heat conduction groove, a third heat conduction sheet slidably embedded in the second heat conduction groove, and a spring fixedly installed between the third heat conduction sheet and the second heat conduction sheet.

[0017] By adopting the above technical solution, the second heat-conducting sheet can efficiently conduct heat from the injection cavity near the second cavity sleeve. The third heat-conducting sheet contacts the second heat-conducting sheet to transfer heat. When the mold is closed, the third heat-conducting sheet contacts the water-cooling pipe, adapts to the compression spring, and slides towards the inside of the second heat-conducting sheet, so that the water-cooling pipe can effectively remove the heat from the third heat-conducting sheet, thereby promoting the rapid cooling of the injection molten material near the second cavity sleeve.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. This application, through the setting of the first positioning post, the second positioning post, and the third positioning post, provides mounting holes and positioning holes coaxially on the fixed template, the push template, the moving template, the fixed mold fixing plate, and the moving mold fixing plate. During mold closing, the protrusion of the second positioning post engages with the groove of the first positioning post, and the protrusion of the third positioning post engages with the groove of the second positioning post, thereby ensuring the accuracy of mold closing of each template, ensuring the coaxiality of the mold needle with the first cavity sleeve and the second cavity sleeve, and making the wall thickness of the produced suction head more uniform, which is conducive to improving the production quality of the suction head;

[0020] 2. This application, through the setting of a first heat-conducting sheet, a water-cooling pipe, and a heat-conducting mechanism, opens a first heat-conducting groove and a water-cooling groove on the ejector plate and a second heat-conducting groove on the moving plate. In the mold-closed state, the first heat-conducting sheet and the second heat-conducting sheet are in uniform contact with the water-cooling pipe. After the molten material is injected, the first heat-conducting sheet, the second heat-conducting sheet, and the third heat-conducting sheet can effectively conduct the heat around the injection cavity, and then quickly remove the heat through the water-cooling pipe, thereby effectively promoting the cooling and molding of the suction head and improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a first-view diagram of the exploded structure of this application;

[0022] Figure 2 This is a second-view diagram of the exploded structure of this application;

[0023] Figure 3 This is a third-person view of the exploded structure of this application;

[0024] Figure 4 This is a cross-sectional structural diagram of this application;

[0025] Figure 5 This is a schematic diagram of the structure of the first cavity sleeve, the second cavity sleeve, and the mold pin of this application;

[0026] Figure 6 This is a structural schematic diagram of the first positioning post, the second positioning post, and the third positioning post of this application;

[0027] Figure 7 This is a schematic diagram of the structure of the first heat-conducting plate, water-cooling pipe and heat-conducting mechanism of this application;

[0028] Figure 8 This is a schematic diagram of the push template of this application.

[0029] Explanation of the labels in the diagram:

[0030] 1. Fixed mold plate; 2. Push mold plate; 3. Moving mold plate; 4. Fixed mold fixing plate; 5. Moving mold fixing plate; 6. Mounting hole; 7. Positioning hole; 8. Fixing hole; 9. First positioning post; 10. Second positioning post; 11. Third positioning post; 12. Injection cavity; 13. First cavity sleeve; 14. Second cavity sleeve; 15. Mold pin; 16. Injection hole; 17. Groove; 18. Protrusion; 19. First heat conduction groove; 20. First heat conduction sheet; 21. Water cooling groove; 22. Water cooling pipe; 23. Second heat conduction groove; 24. Second heat conduction sheet; 25. Third heat conduction sheet; 26. Spring. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0035] Please see Figures 1-8A pipette tip processing device with a filter element includes a fixed template 1, a pushing template 2, a moving template 3, a fixed template fixing plate 4, and a moving template fixing plate 5. The fixed template 1, pushing template 2, and moving template 3 are coaxially provided with mounting holes 6 and positioning holes 7. Four sets of positioning holes 7 are arranged in a rectangular array about the mounting holes 6. The fixed template 4 and moving template fixing plate 5 are provided with correspondingly distributed fixing holes 8. A first positioning post 9 is fixedly embedded in the positioning hole 7 on the fixed template 1, and the end of the first positioning post 9 is fixedly embedded in the fixing hole 8 on the fixed template 4. A second positioning post 10 is fixedly embedded in the positioning hole 7 on the pushing template 2. A third positioning post 11 is fixedly embedded in the positioning hole 7 on the moving template 3, and the end of the third positioning post 11 is fixedly embedded in the fixing hole 8 on the moving template fixing plate 5. The first positioning post 9, the second positioning post 10, and the third positioning post 11 are nested together sequentially. The tops of the first positioning post 9 and the second positioning post 10 are both open... The mold has a groove 17, and the bottom ends of the second positioning post 10 and the third positioning post 11 are each provided with a protrusion 18 that matches the groove 17. A first cavity sleeve 13 is fixedly embedded in the mounting hole 6 of the push mold plate 2, a second cavity sleeve 14 is fixedly embedded in the mounting hole 6 of the moving mold plate 3, and a mold pin 15 is fixedly embedded in the mounting hole 6 of the fixed mold plate 1. The mold pin 15 corresponds to and matches the first cavity sleeve 13 and the second cavity sleeve 14. An injection hole 16 communicating with the second cavity sleeve 14 is provided on the moving mold fixing plate 5. During mold closing, the protrusion 18 of the second positioning post 10 engages with the groove 17 of the first positioning post 9, and the protrusion 18 of the third positioning post 11 engages with the groove 17 of the second positioning post 10, thereby ensuring the accuracy of each template mold closing. At the same time, the mounting holes and positioning holes are all coaxially integrated, which can effectively ensure the coaxiality of the mold pin 15 with the first cavity sleeve 13 and the second cavity sleeve 14 during mold closing, making the wall thickness of the produced suction head more uniform and improving the production quality of the suction head.

[0036] A first heat-conducting groove 19 is provided on the side of the push plate 2 near the moving plate 3. The first heat-conducting groove 19 surrounds the mounting hole 6 on the push plate 2. A first heat-conducting plate 20 is fixedly embedded in the first heat-conducting groove 19, which can efficiently conduct heat from the injection cavity 12 near the first cavity sleeve 13. A water-cooling groove 21 is provided at the opening of the first heat-conducting groove 19. A water-cooling pipe 22 is installed in the water-cooling groove 21. The water-cooling pipe 22 is in contact with the first heat-conducting plate 20. Coolant circulates in the water-cooling pipe 22, which can effectively remove heat from the first heat-conducting plate 20, thereby promoting rapid cooling of the injection molten material near the first cavity sleeve 13. A second heat-conducting groove 23 is provided on the side of the moving plate 3 near the push plate 2. The second heat-conducting groove 23 surrounds the mounting hole on the moving plate 3. 6. A heat-conducting mechanism is provided inside the second heat-conducting groove 23. The heat-conducting mechanism includes a second heat-conducting plate 24 fixedly embedded in the top wall of the second heat-conducting groove 23, and a third heat-conducting plate 25 slidably embedded in the second heat-conducting groove 23. A spring 26 is fixedly installed between the third heat-conducting plate 25 and the second heat-conducting plate 24. The second heat-conducting plate 24 can efficiently conduct heat from the injection cavity 12 near the second cavity sleeve 14. The third heat-conducting plate 25 contacts the second heat-conducting plate 24 to transfer heat. When the mold is closed, the third heat-conducting plate 25 contacts the water-cooling pipe 22, adaptively compresses the spring 26 and slides inward toward the second heat-conducting plate 24, so that the water-cooling pipe 22 can effectively remove the heat from the third heat-conducting plate 25, thereby promoting the rapid cooling of the injection molten material near the second cavity sleeve 14.

[0037] The implementation principle of this application embodiment is as follows: During mold closing, the protrusion 18 of the second positioning post 10 engages with the groove 17 of the first positioning post 9, and the protrusion 18 of the third positioning post 11 engages with the groove 17 of the second positioning post 10, thereby ensuring the accuracy of each mold plate closing. Simultaneously, the mounting holes and positioning holes are coaxially integrated, effectively ensuring the coaxiality of the mold pin 15 with the first cavity sleeve 13 and the second cavity sleeve 14, resulting in a more uniform wall thickness for the produced suction head, which is beneficial for improving the production quality of the suction head. Molten material is injected through the injection hole 16, and then coolant circulates within the water-cooling pipe 22. The first heat-conducting plate 20 can efficiently conduct heat from the injection cavity 12 near the first cavity sleeve 13. The cooling pipe 22 is positioned in contact with the first heat-conducting plate 20, which can effectively remove the heat from the first heat-conducting plate 20, thereby promoting the rapid cooling of the injection molten material near the first cavity sleeve 13. At the same time, the second heat-conducting plate 24 can efficiently conduct the heat of the injection cavity 12 near the second cavity sleeve 14. The third heat-conducting plate 25 is in contact with the second heat-conducting plate 24 to transfer heat. When the mold is closed, the third heat-conducting plate 25 is in contact with the water-cooling pipe 22, and the adaptive compression spring 26 slides inward to the second heat-conducting plate 24, so that the water-cooling pipe 22 can effectively remove the heat from the third heat-conducting plate 25, thereby promoting the rapid cooling of the injection molten material near the second cavity sleeve 14. Overall, it effectively promotes the cooling and molding of the suction head, which is conducive to improving production efficiency.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipette tip processing device with filter cartridge, comprising a fixed template (1), a pushing template (2), a moving template (3), a fixed template fixing plate (4), and a moving template fixing plate (5), characterized in that: The fixed template (1), the push template (2), and the moving template (3) are coaxially provided with mounting holes (6) and positioning holes (7). The fixed mold fixing plate (4) and the moving mold fixing plate (5) are provided with correspondingly distributed fixing holes (8). A first positioning post (9) is fixedly embedded in the positioning hole (7) on the fixed template (1), and the end of the first positioning post (9) is fixedly embedded in the fixing hole (8) of the fixed mold fixing plate (4). A second positioning post (10) is fixedly embedded in the positioning hole (7) of the push template (2), and a third positioning post (11) is fixedly embedded in the positioning hole (7) of the moving template (3), and the third positioning post (11) is fixedly embedded in the positioning hole (7). The end of the mold is fixedly embedded in the fixing hole (8) of the moving mold fixing plate (5). The first positioning post (9), the second positioning post (10) and the third positioning post (11) are nested and connected in sequence. The first cavity sleeve (13) is fixedly embedded in the mounting hole (6) of the push plate (2). The second cavity sleeve (14) is fixedly embedded in the mounting hole (6) of the moving plate (3). The mold needle (15) is fixedly embedded in the mounting hole (6) of the fixed plate (1). The mold needle (15) is correspondingly adapted to the first cavity sleeve (13) and the second cavity sleeve (14). The moving mold fixing plate (5) has an injection hole (16) communicating with the second cavity sleeve (14).

2. The pipette tip processing device with filter element according to claim 1, characterized in that: The positioning holes (7) are provided in four sets. The four sets of positioning holes (7) are arranged in a rectangular array about the mounting hole (6). Each set of positioning holes (7) is provided with a first positioning post (9), a second positioning post (10) and a third positioning post (11).

3. The pipette tip processing device with filter element according to claim 2, characterized in that: The top ends of the first positioning post (9) and the second positioning post (10) are provided with grooves (17), and the bottom ends of the second positioning post (10) and the third positioning post (11) are provided with protrusions (18) that are adapted to the grooves (17).

4. The pipette tip processing device with filter element according to claim 3, characterized in that: The push template (2) has a first heat conduction groove (19) on the side near the moving template (3). The first heat conduction groove (19) is arranged around the mounting hole (6) on the push template (2). A first heat conduction sheet (20) is fixedly embedded in the first heat conduction groove (19).

5. The pipette tip processing device with filter element according to claim 4, characterized in that: A water-cooling tank (21) is provided at the opening of the first heat-conducting tank (19), and a water-cooling pipe (22) is installed in the water-cooling tank (21).

6. The pipette tip processing device with filter element according to claim 5, characterized in that: The moving template (3) has a second heat conduction groove (23) on the side near the push template (2). The second heat conduction groove (23) is arranged around the mounting hole (6) on the moving template (3), and a heat conduction mechanism is provided in the second heat conduction groove (23).

7. The pipette tip processing device with filter element according to claim 6, characterized in that: The heat conduction mechanism includes a second heat conduction plate (24) fixedly embedded in the top wall of the second heat conduction groove (23), a third heat conduction plate (25) slidably embedded in the second heat conduction groove (23), and a spring (26) fixedly installed between the third heat conduction plate (25) and the second heat conduction plate (24).

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