Hot runner mold system for deep well plates

Abstract

The present invention discloses a hot runner mold system for deep-hole plates, including a template and a hot runner device, wherein the template has a cavity of the deep-hole plate and a plurality of point gates corresponding one-to-one to the plurality of holes of the deep-hole plate, and the hot runner device includes a main nozzle, a plurality of pointed nozzles matched one-to-one with the plurality of point gates, and a runner mechanism provided between the main nozzle and the plurality of pointed nozzles, wherein a rubber flow channel is formed in the runner mechanism, and the main nozzle is connected to each of the pointed nozzles through the flow channel. Compared with the prior art, the present invention has the following beneficial effects: on the one hand, it is possible to realize the processing and manufacturing of deep-hole plates by using a hot runner injection molding process; on the other hand, by providing point gates and pointed nozzles corresponding one-to-one to the plurality of holes of the deep-hole plate, the simultaneous injection of glue into the plurality of holes of the deep-hole plate is achieved, thereby ensuring the product quality of the deep-hole plate and avoiding the backflow of glue into some holes due to the asynchronous injection of glue into the plurality of holes, resulting in the bottom of the hole being incomplete.

Description

Technical Field

[0001] The invention belongs to the technical field of hot runners and relates to a hot runner mould system for a deep hole plate. Background Art

[0002] Deep-well plates, also known as deep-well storage plates, are experimental consumables that have been widely used in the field of biological and medical testing. Deep-well plates have multiple holes (or multiple cavities), each of which can be used to store samples. They have the advantages of being neatly arranged during storage, saving space, having a large storage capacity, and being able to withstand low temperatures. According to the number of holes, 96-well plates are currently the most common deep-well plates, that is, a deep-well plate has 96 holes that can be used to store samples independently.

[0003] At present, the processing and manufacturing of deep hole plates basically adopts cold runner injection molding, which will produce a lot of waste, which is not conducive to economy and environmental protection. At present, there is no technology to realize the processing and manufacturing of deep hole plates by hot runner injection molding. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a hot runner mold system for deep-hole plates, so as to achieve the purpose of processing deep-hole plates by using hot runner injection molding process.

[0005] To achieve the above-mentioned purpose of the invention, one embodiment of the present invention provides a hot runner mold system for a deep hole plate, including a template and a hot runner device, the template having a cavity of the deep hole plate and a plurality of point gates corresponding one-to-one to the plurality of holes of the deep hole plate, the hot runner device comprising a main nozzle, a plurality of pointed nozzles paired one-to-one with the plurality of point gates, and a runner mechanism arranged between the main nozzle and the plurality of pointed nozzles, a rubber flow channel being formed in the runner mechanism, and the main nozzle is connected to each of the pointed nozzles through the flow channel.

[0006] As a further improvement of one embodiment of the present invention, the flow channel mechanism includes a diverter plate, which includes a main surface with multiple flow channel openings. The hot runner device also includes a heating plate, which is arranged in contact with the main surface and surrounds the multiple flow channel openings.

[0007] As a further improvement of an embodiment of the present invention, the heating plate includes a copper plate body and a heating wire embedded in the copper plate body.

[0008] As a further improvement of an embodiment of the present invention, the flow channel mechanism includes:

[0009] A first manifold, comprising at least one first flow channel opening;

[0010] A second manifold, comprising at least one second flow channel opening;

[0011] The flow channel docking assembly is arranged between the first manifold plate and the second manifold plate, and includes a connector having a hollow channel and a heater surrounding the outside of the connector. The first flow channel opening is connected to the second flow channel opening through the hollow channel.

[0012] As a further improvement of an embodiment of the present invention, the connecting member has two end surfaces arranged opposite to each other in the longitudinal direction thereof, and the hollow channel extends linearly along the longitudinal direction and connects the two end surfaces;

[0013] The first manifold plate has a first sealing surface surrounding the first flow channel opening, and the second manifold plate has a second sealing surface surrounding the second flow channel opening;

[0014] Among them, when the heater is in a non-heating state, one of the end surfaces is attached to the second sealing surface, and the other end surface is separated from the first sealing surface; when the heater is in a heating state, one of the end surfaces is attached to the second sealing surface, and the other end surface is attached to the first sealing surface.

[0015] As a further improvement of an embodiment of the present invention, part of the template is located between the first manifold plate and the second manifold plate;

[0016] The flow channel docking assembly further includes a fastener, the fastener is sleeved on the outside of the connecting piece, the fastener includes a fixing portion and a sleeve, and the heater is sleeved on the outside of the sleeve;

[0017] When the heater is in a non-heating state, the fixing portion is clamped between the first sealing surface and a portion of the template, and its end surface is in contact with the first sealing surface;

[0018] The sleeve freely extends from the fixing portion toward the second sealing surface.

[0019] As a further improvement of an embodiment of the present invention, the fastener comprises an inner transition body and an outer flange, the transition body and the flange are separately provided and the two are matched with each other through a step structure;

[0020] When the heater is in a non-heating state, the end surface of the transition body and the end surface of the flange are both in contact with the first sealing surface;

[0021] The thermal expansion coefficient of the transition body is smaller than the thermal expansion coefficient of the flange and the connecting member.

[0022] As a further improvement of an embodiment of the present invention, the number of holes in the deep-well plate is 96, and the center distance between two adjacent ones of the plurality of the sharp nozzles is 9.0-9.5 mm.

[0023] As a further improvement of an embodiment of the present invention, the path distances from the main nozzle along the flow channel to all the pointed nozzles are the same.

[0024] As a further improvement of an embodiment of the present invention, the flow channel includes one 1-outlet 2-type diversion flow channel, two 1-outlet 3-type diversion flow channels, six 1-outlet 4-type diversion flow channels and twenty-four 1-outlet 4-type diversion flow channels extending in sequence.

[0025] As a further improvement of an embodiment of the present invention, the flow channel mechanism includes a plurality of manifolds, a glue inlet formed on a manifold, and a plurality of glue outlets having the same number as the nozzles, and the main nozzle is connected to the manifold and docked with the glue inlet;

[0026] Wherein, each of the glue outlets has a groove around it, and the pointed nozzle is configured as a nozzle core embedded in the groove through a pressing cap; or,

[0027] The glue outlet is formed on the surface of a diverter plate, and the pointed nozzle is configured as a nozzle core that is attached to the surface through a flange.

[0028] As a further improvement of an embodiment of the present invention, the flow channel mechanism includes a glue inlet and a plurality of glue outlets, and the glue inlet is connected to the main nozzle;

[0029] The hot runner device also includes a plurality of hot nozzle mechanisms;

[0030] Each of the hot nozzle mechanisms includes an integrally arranged main body, a heating module arranged in the main body, a plurality of hot nozzle flow channels formed in the main body, and the pointed nozzle assembled in the main body, the pointed nozzle is the same in number as the hot nozzle flow channels and corresponds one to one, the two ends of the hot nozzle flow channels are respectively connected to the glue outlet and the pointed nozzle, and the plurality of hot nozzle flow channels are evenly arranged around the heating module.

[0031] As a further improvement of an embodiment of the present invention, in the hot nozzle mechanism, the number of the hot nozzle flow channels is set to four, and any two of the hot nozzle flow channels are independent of each other and not connected to each other.

[0032] Compared with the prior art, the present invention has the following beneficial effects: on the one hand, it can realize the processing and manufacturing of deep-hole plates by adopting hot runner injection molding process; on the other hand, by setting point gates and pointed nozzles corresponding to the multiple holes of the deep-hole plate, the multiple holes of the deep-hole plate can be injected with glue synchronously, thereby ensuring the product quality of the deep-hole plate and avoiding the backflow of glue in some holes due to the asynchronous injection of glue into the multiple holes, resulting in the bottom of the hole being defective. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of a deep-well plate;

[0034] Figure 2a is a perspective view of the upper part of the hot runner device of the hot runner mold system of the first embodiment of the present invention;

[0035] Figure 2b is a three-dimensional view of the lower part of the hot runner device of the hot runner mold system of the first embodiment of the present invention;

[0036] Figure 3 is a bottom view of a hot runner device of a hot runner mold system according to a first embodiment of the present invention;

[0037] Figure 4 is a cross-sectional view of a flow channel docking assembly of a flow channel mechanism of a first embodiment of the present invention;

[0038] Figure 5 is a side view of a hot runner device of a hot runner mold system according to a first embodiment of the present invention;

[0039] Figure 6a is along Figure 5 Sectional view along line AA;

[0040] Figure 6b is along Figure 5 Sectional view of the middle BB line;

[0041] Figure 6c is along Figure 5 Section view of the mid-CC line;

[0042] Figure 7 is a schematic perspective top view of a flow channel of a flow channel mechanism according to a first embodiment of the present invention;

[0043] Figure 8 is a three-dimensional structural diagram of a hot nozzle mechanism according to a first embodiment of the present invention;

[0044] Figure 9a is a top view of the hot nozzle mechanism of the first embodiment of the present invention;

[0045] Figure 9b is a bottom view of the hot nozzle mechanism of the first embodiment of the present invention;

[0046] Fig.10 is a cross-sectional view along line DD in FIG9 ;

[0047] Fig.11 is a cross-sectional view of the tip of the hot runner mold system of the second embodiment of the present invention;

[0048] Fig.12 It is a cross-sectional view of the tip of the hot runner mold system according to the third embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0050] <First Embodiment>

[0051] See also Figure 2a-10 The first embodiment of the present invention provides a hot runner mold system, which is suitable for the injection molding processing and preparation of deep hole plates, specifically an open hot runner mold system, that is, it cooperates with an injection molding machine and realizes the start and stop of injection molding production under the pressure provided by the injection molding machine to the injection molding rubber material.

[0052] Specifically, refer to Figure 2a and Figure 2b The hot runner mold system includes a template 200 and a hot runner device 100.

[0053] The template 200 has a cavity of a deep well plate and a plurality of point gates corresponding to the plurality of holes of the deep well plate. That is, the cavity of the template 200 is suitable for deep well plate products. When the injection molding rubber enters the cavity, the injection molding rubber can be molded into a deep well plate in the cavity. As mentioned in the background technology, the deep well plate has a plurality of holes for storing samples. The template 200 has a plurality of point gates for each deep well plate. Each of the point gates is connected to the cavity of the deep well plate and allows the injection molding rubber to enter the cavity. In the present application, the plurality of point gates correspond to the plurality of holes of the deep well plate, that is, the number of the point gates is consistent with the number of holes of the deep well plate and each of the holes is provided with a point gate, so that the injection molding rubber can enter the cavity through the point gate to form a corresponding hole.

[0054] The technical description of the present invention is carried out by taking a deep-well plate as an example of a 96-hole plate. Of course, the number of holes of the deep-well plate is not limited thereto. In the present application, corresponding to the 96 holes of the deep-well plate, the template 200 has a cavity corresponding to the deep-well plate and 96 point gates connected to the cavity, each point gate corresponding to a hole of the deep-well plate, for injection molding rubber to enter the cavity to construct the area of ​​the hole.

[0055] The hot runner device 100 includes a main nozzle 1, a plurality of nozzles 7 and a flow channel mechanism. The main nozzle 1 is used to match the spray gun of the injection molding machine, and it constitutes the starting injection port for the injection molding rubber to enter the hot runner device 100 from the injection molding machine; the flow channel mechanism is arranged between the main nozzle 1 and the plurality of nozzles 7, and a rubber flow channel is formed inside the main nozzle 1, and the main nozzle 1 is connected to each nozzle 7 through the flow channel, so that the injection molding rubber is distributed from the main nozzle 1 to the plurality of nozzles 7 through the flow channel; the plurality of nozzles 7 are matched one by one with the plurality of point gates, that is, each nozzle 7 corresponds to a point gate. Similarly, taking the deep-hole plate as a 96-hole plate as an example, for each deep-hole plate, the hot runner device 100 has 96 nozzles 7, thereby enabling the injection molding rubber to enter the cavity from the nozzles 7 through the corresponding point gates.

[0056] In summary, the hot runner mold system provided by the present invention, on the one hand, can realize the processing and manufacturing of deep hole plates by using hot runner injection molding technology, with almost no waste generated, breaking the technical barriers of traditional cold runner injection molding for processing deep hole plates and avoiding the waste problem; on the other hand, by setting point gates and pointed nozzles 7 corresponding to the multiple holes of the deep hole plate, the multiple holes of the deep hole plate can be injected with glue synchronously, thereby ensuring the product quality of the deep hole plate and avoiding the backflow of glue in some holes due to the asynchronous injection of glue into the multiple holes, resulting in the bottom of the hole being incomplete.

[0057] Based on the above, the 96 point gates correspond to the 96 holes of the deep hole plate one by one, and at the same time, the 96 nozzles 7 correspond to the 96 point gates one by one, that is, the 96 nozzles 7 correspond to the 96 holes of the deep hole one by one. Figure 3 The position arrangement of the 96 sharp nozzles 7 is consistent with the position arrangement of the 96 holes of the deep well plate. Preferably, among the 96 sharp nozzles 7, the center distance between two adjacent sharp nozzles 7 is 9.0-9.5 mm.

[0058] It should be noted that, in the present application, the relevant structures, positional relationships, numbers, etc., only correspond to one of the deep-hole plates. For example, the template 200 has one cavity and 96 point gates, which is only for one deep-hole plate. In the actual template, multiple cavities and point gates for multiple deep-hole plates can be integrated (as shown in the accompanying drawings, the template 200 has two cavities and two point gate groups for two 96-hole plates and each group includes 96 point gates, and an integrated hot runner device 100, having two groups of nozzles 7 and each group has 96 nozzles).

[0059] Further, Figures 2a to 4 The flow channel mechanism includes an upper diverter plate 2, a lower diverter plate 6 and a flow channel docking assembly 4.

[0060] Among them, the upper surface 21 of the upper diverter plate 2 is formed with a glue inlet 90, which constitutes the starting end of the flow channel. The main nozzle 1 is connected to the upper diverter plate 2 and docked with the glue inlet 90, so that the injection rubber material flows from the main nozzle 1 through the glue inlet 90 into the flow channel; the lower surface 22 of the upper diverter plate 2 includes at least one upper flow channel opening 901, and the injection rubber material can flow out of the upper diverter plate 2 through the upper flow channel opening 901. In this embodiment, the lower surface 22 of the upper diverter plate 2 includes 6 upper flow channel openings 901. Let me explain again that the lower surface 22 includes 6 upper flow channel openings 901 only for one deep-hole plate. For example, in the integrated upper diverter plate 2 corresponding to two deep-hole plates in the attached figure, there will be two sets of 12 upper flow channel openings 901. Other similar situations in the full text will not be further explained, and the relevant statements should be understood as for the same deep-hole plate.

[0061] The upper surface 61 of the lower manifold plate 6 includes at least one lower manifold opening 902, through which the injection molding material can flow into the lower manifold plate 6. The lower manifold opening 902 corresponds to the upper manifold opening 901 one by one, that is, the number and position of the two are matched.

[0062] The flow channel docking assembly 4 is arranged between the upper manifold 2 and the lower manifold 6, and includes a connector 41 and a heater 42. The connector 41 has a hollow channel 410, and the upper manifold opening 901 is connected to the lower manifold opening 902 through the hollow channel 410, so that the upper manifold opening 901 and the lower manifold opening 902 are connected through the flow channel docking mechanism 4, so that the injection molding rubber flows out of the upper manifold 2 from the upper manifold opening 901, and then flows into the lower manifold 6 through the lower manifold opening 902 through the hollow channel 410. The heater 42 surrounds the outside of the connector 41, so that by arranging the flow channel docking assembly 4 between the upper manifold 2 and the lower manifold 6, not only can the flow channel docking between the upper manifold 2 and the lower manifold 6 be achieved, but also the heater 42 can be provided to ensure that the injection molding rubber is in a molten state.

[0063] Furthermore, the heater 42 may specifically include a heat-conducting tube and an electric heating wire, wherein the heat-conducting tube is sleeved on the outside of the connector 41, and the electric heating wire is wound and embedded on the outside of the heat-conducting tube. When the electric heating wire is powered on, the heater 42 is in a heating state, and the electric heating wire can generate heat, and the heat is evenly transferred to the connector 41 through the heat-conducting tube to heat the injection molding material flowing through the hollow channel 410; on the contrary, when the electric heating wire is not powered on, the heater 42 is in a non-heating state, and the electric heating wire does not generate heat. Therefore, by providing the heat-conducting tube, the uniformity of heat transfer can be guaranteed. Of course, in the variant embodiment, the specific structure of the heater 42 is not limited to this.

[0064] Furthermore, the connecting member 41 extends longitudinally in the up-down direction, that is, its longitudinal direction is parallel to the up-down direction. The connecting member 41 has two end surfaces arranged opposite to each other in its longitudinal direction, that is, an upper end surface 412 and a lower end surface 411; the hollow channel 410 extends linearly in the longitudinal direction, and connects the upper end surface 412 and the lower end surface 411.

[0065] The upper manifold 2 has a first sealing surface surrounding the upper flow channel opening 901; the lower manifold 6 has a second sealing surface 920 surrounding the lower flow channel opening 902. When the heater 42 is in the non-heating state, the lower end surface 411 is tightly attached to the second sealing surface 920, and the upper end surface 412 is separated from the first sealing surface, that is, the upper end surface 412 is separated from the first sealing surface and has a certain interval; when the heater 42 is in the heating state, the lower end surface 411 still remains tightly attached to the second sealing surface 920, and under the influence of thermal expansion and contraction, the connector 41 undergoes thermal expansion in the longitudinal direction, and the upper end surface 412 is also tightly attached to the first sealing surface, that is, the original interval between the upper end surface 412 and the first sealing surface disappears due to the thermal expansion of the connector 41. Therefore, on the one hand, during the injection molding production process, it can be ensured that the hollow channel 410 and the lower layer flow channel opening 902, as well as the hollow channel 410 and the upper layer flow channel opening 901 can be seamlessly connected, effectively preventing glue leakage and glue hiding; on the other hand, it can also avoid the connecting piece 41 from excessively squeezing the upper layer diverter plate 2 and the lower layer diverter plate 6.

[0066] In this embodiment, the first sealing surface is coplanar with the lower surface 22 of the upper manifold plate 2. It can also be said that the lower surface 22 of the upper manifold plate 2 constitutes the first sealing surface. Of course, in a variant embodiment, the first sealing surface may not be coplanar with the lower surface 22 of the upper manifold plate 2.

[0067] Furthermore, in this embodiment, the upper surface 61 of the lower manifold 6 has a groove surrounding the lower flow channel opening 902, and part of the lower groove surface of the groove constitutes the second sealing surface 920. Furthermore, the lower end of the connector 41 is embedded in the groove to assist positioning, and the lower end of the connector 41 is screwed into the groove through an external thread to further avoid glue leakage.

[0068] In addition, in this embodiment, the lower end surface 411 of the connector 41 is always tightly fitted to the second sealing surface 920, and there is a gap between the upper end surface 412 and the upper manifold plate 2 in a cold state to accommodate the thermal expansion changes of the connector 41. In a variant embodiment, it can also be changed to that the upper end surface 412 of the connector 41 is always tightly fitted to the first sealing surface, and there is a gap between the lower end surface 411 and the second sealing surface 920 in a cold state to accommodate the thermal expansion changes of the connector 41.

[0069] Furthermore, when the heater 42 is in the non-heating state, the interval between the upper end surface 412 and the first sealing surface can be set according to the material, length and other parameters of the connector 41 according to the formula: the length of the connector in the longitudinal direction * the heating temperature * the expansion coefficient of the connector material.

[0070] Furthermore, part of the template 200 is located between the upper manifold plate 2 and the lower manifold plate 6 , and the flow channel docking assembly 4 passes through the part of the template 200 and connects the upper manifold plate 2 and the lower manifold plate 6 .

[0071] The flow channel docking assembly 4 also includes a fastener. The fastener is sleeved on the outside of the connecting member 41 and includes a fixing portion at the upper end and a sleeve at the lower end. The heater 42 is sleeved on the outside of the sleeve, and the fixing portion is not provided with the heater 42. When the heater 42 is in a non-heating state, the fixing portion is clamped between the first sealing surface and a portion of the template 200, and the upper end surface of the fixing portion is in contact with the first sealing surface. In this way, through the setting of the fixing portion, on the one hand, the installation and positioning of the flow channel docking assembly 4 can be facilitated, and on the other hand, the sealing effect of the flow channel docking assembly 4 on the upper diverter plate 2 can be ensured; and, the sleeve freely extends downward from the lower end of the fixing portion toward the second sealing surface 920. The so-called free extension means that no matter whether the heater 42 is in a heating state or a non-heating state, the lower end of the sleeve will not be supported by other components and affect its downward expansion. In this way, combined with the setting of the connecting piece 41 and the heater 42, the flow channel docking assembly 4 not only fully ensures the avoidance of the problem of glue leakage and glue storage, but also fully releases the changes in thermal expansion to avoid excessive squeezing of the upper diverter plate 2 and the lower diverter plate 6.

[0072] Preferably, the fastener comprises an inner transition body 432 and an outer flange 431, wherein the transition body 432 and the flange 431 are separately provided and are matched with each other through a step structure. Specifically, the outer peripheral edge of the flange 431 is clamped between the first sealing surface and the part of the template 200, and the upper end of the inner wall thereof is provided with an outwardly expanded step portion; the transition body 432 is sleeved inside the flange 431, and the upper end thereof has an outwardly expanded step portion, so that it can be suspended inside the flange 431.

[0073] When the heater 42 is not in a heating state, the upper end surface of the transition body 432 and the upper end surface of the flange 431 are both in contact with the first sealing surface. In this way, by setting a double-layer fastener, the flange 431 is mainly used to achieve positioning connection, and the precise setting of the transition body 432 can further facilitate the sealing effect of the fastener on the first sealing surface, which is beneficial to production and processing.

[0074] Preferably, the thermal expansion coefficient of the transition body 432 is smaller than the thermal expansion coefficient of the flange 431 and the connecting member 41 .

[0075] Further, as mentioned above, the upper surface 61 of the lower manifold plate 6 has a plurality of lower runner openings 902; correspondingly, the hot runner device 100 also includes a heating plate, which is arranged on the upper surface 61 of the lower manifold plate 6, and the heating plate surrounds the plurality of lower runner openings 902. In this way, by setting the heating plate, it can be ensured that heat can be evenly transferred to the upper surface 61 of the lower manifold plate 6, so as to ensure that the temperature of the plurality of lower runner openings 902 or even the entire lower manifold plate 6 is uniform in the horizontal direction, thereby facilitating the hot runner injection molding preparation of the deep hole plate and solving the problem that the temperature cannot be kept uniform. In this embodiment, the heating plate is exemplified as being arranged at the upper surface 61 of the lower manifold plate 6. Of course, more preferably, the heating plate can be arranged at the lower surface 62 of the lower manifold plate 6, the lower surface 22 of the upper manifold plate 2 or other positions to achieve the effect of uniform heat transfer, thereby ensuring that each manifold plate is evenly heated.

[0076] Specifically, in this embodiment, the heating plate includes a copper plate body 51 and a heating wire 52 embedded in the copper plate body 51. The heating wire 52 is preferably embedded in the upper surface of the copper plate body 51, that is, the side away from the upper surface 61 of the lower diverter plate 6, so that when the heating wire 52 is powered on for heating, its heat is indirectly transferred to the lower diverter plate 6 through the copper plate body 51, so that the lower diverter plate 6 is heated more evenly.

[0077] Preferably, the copper plate body 51 roughly covers the entire area used to form the flow channel in the upper surface 61 of the lower diverter plate 6 except for the surrounding fastening positions. In this way, the copper plate body 51 can further ensure the uniform heating effect of the flow channel in the lower diverter plate 6, avoid the different flow of the injection molding rubber in various parts of the flow channel due to uneven temperature, and then ensure the synchronous injection of glue at the corresponding cavity positions of each hole of the deep hole plate, thereby ensuring the product quality of the deep hole plate.

[0078] Furthermore, the upper surface 21 of the upper manifold plate 2 is provided with a heating tube 31 , and the lower surface 22 thereof is provided with a heating tube 32 , thereby ensuring the temperature uniformity of all parts of the upper manifold plate 2 and ensuring that the temperature of the injection molding material is controllable.

[0079] Furthermore, the path distances from the main nozzle 1 along the flow channel to all the pointed nozzles 7 are the same. In this way, the balance of the flow channel design can ensure the balance of the glue injection at each point gate, thereby ensuring the synchronous glue injection at the corresponding cavity positions of each hole of the deep hole plate, ensuring the product quality of the deep hole plate, and avoiding backflow caused by unbalanced glue injection at the corresponding cavity positions of each hole, resulting in incomplete glue injection in some holes.

[0080] Ginseng Figures 5 to 7 The flow channel includes one 1-outlet 2-type flow splitting channel 91, two 1-outlet 3-type flow splitting channels 92, six 1-outlet 4-type flow splitting channels 93 and twenty-four 1-outlet 4-type flow splitting channels 94 extending in sequence.

[0081] Specifically, as mentioned above, the glue inlet 90 is formed on the upper surface 21 of the upper diverter plate 2 and is equipped with a main nozzle 1; the flow channel extends downward from the glue inlet 90 until two horizontally extending diverter channels 91 are formed, and the two diverter channels 91 each correspond to a cavity of the deep hole plate. As mentioned above, only one of the diverter channels 91 is introduced.

[0082] The branch flow channel 91 extends horizontally, and its end is bifurcated to form two branch flow channels 92, that is, the branch flow channel 91 is a 1-out 2-out type.

[0083] The front section of the diverter channel 92 is vertically connected to the diverter channel 91 and extends horizontally, and the two diverter channels 92 extend in opposite directions from the diverter channel 91; the rear section of the diverter channel 92 extends longitudinally downward from the end of the front section of the diverter channel 92, and the rear sections of the two diverter channels 92 extend in parallel with each other in the same direction. The end of the rear section of the diverter channel 92 is bifurcated to form three diverter channels 93, that is, the diverter channel 92 is a 1-out-3 type. The two diverter channels 92 form a total of six diverter channels 93.

[0084] The front section of the diverter channel 93 is vertically connected to the rear section of the diverter channel 92 and extends horizontally, and the three diverter channels 93 that branch off from the same diverter channel 92 have their front sections perpendicular to each other. The rear section of the diverter channel 93 extends longitudinally downward from the end of the front section of the diverter channel 93, and the rear sections of the six diverter channels 93 extend in parallel with each other in the same direction. The end of the rear section of the diverter channel 93 is bifurcated to form four diverter channels 94, that is, the diverter channel 93 is a 1-out-4 type. The six diverter channels 93 form a total of 24 diverter channels 94.

[0085] Among them, in this embodiment, the rear section of the diverter channel 93 includes a part located in the upper diverter plate 2, a part located in the channel docking assembly 4, and a part located in the lower diverter plate 6. That is to say, the diverter channel 91, the diverter channel 92, the horizontally extending front section of the diverter channel 93, and a part of the longitudinally extending rear section of the diverter channel 93 are all arranged in the upper diverter plate 2; the rear section of the diverter channel 93 extends out of the upper diverter plate 2 through the upper channel opening 901, passes through the channel docking assembly 4, and extends into the lower diverter plate 6 through the lower channel opening 902, and the hollow channel 410 in the channel docking assembly 4 constitutes the middle part of the rear section of the diverter channel 93; the terminal part of the rear section of the diverter channel 93 and the diverter channel 94 are located in the lower diverter plate 6.

[0086] The front section of the diverter channel 94 is vertically connected to the rear section of the diverter channel 93 and extends horizontally, and the four diverter channels 94 that branch off from the same diverter channel 93 have two adjacent front sections that are perpendicular to each other, that is, the front sections of the four diverter channels 94 extend horizontally outward in a cross shape with the rear section end of the diverter channel 93 as the center; the rear section of the diverter channel 94 extends longitudinally downward from the end of the front section of the diverter channel 94, and the rear sections of the twenty-four diverter channels 94 extend in parallel with each other in the same direction. The end of the rear section of the diverter channel 94 is bifurcated to form four diverter channels 95, that is, the diverter channel 94 is a 1-out-4 type. The twenty-four diverter channels 94 form a total of ninety-six diverter channels 95, and each diverter channel 95 corresponds to a nozzle 7, a point gate, and a hole of the deep hole plate.

[0087] The front section of the diverter channel 95 is vertically connected to the rear section of the diverter channel 94 and extends horizontally, and in the four diverter channels 95 that branch off from the same diverter channel 94, the two adjacent front sections of each are perpendicular to each other, that is, the front sections of the four diverter channels 95 extend horizontally outward in a cross shape approximately with the end of the rear section of the diverter channel 94 as the center; the rear section of the diverter channel 95 extends longitudinally downward from the end of the front section of the diverter channel 95, and the rear sections of the ninety-six diverter channels 95 extend in parallel with each other and in the same direction.

[0088] Among them, in this embodiment, the end part of the rear section of the diverter channel 93, the diverter channel 94 and the diverter channel 95 are arranged in the lower diverter plate 6, and the end of the rear section of the ninety-six diverter channels 95 is a glue outlet formed on the lower surface 62 of the lower diverter plate 6, and the glue outlet is also the glue outlet of the flow channel of the flow channel mechanism.

[0089] Furthermore, in this embodiment, combined with Figure 2a and Figure 2b , Figure 8-10 The hot runner device 100 also includes a plurality of hot nozzle mechanisms, each of which includes a main body 8, a heating module 10, a plurality of hot nozzle channels 801 and the pointed nozzle 7.

[0090] The main body 8 is integrally arranged, and its upper end is fixedly matched to the lower surface 62 of the lower layer of the manifold 6, and it extends longitudinally; a plurality of hot nozzle flow channels 801 are formed in the main body 8, penetrating the upper and lower end surfaces of the main body 8, and its upper end is connected to the glue outlet of the lower surface 62 of the lower layer of the manifold 6, that is, the diverter flow channel 95; the pointed nozzle 7 is assembled at the lower end of the main body 8, and its number is consistent with that of the hot nozzle flow channels 801 and the two correspond one to one, so that each pointed nozzle 7 is connected to a corresponding hot nozzle flow channel 801. In this way, the injection molding rubber in the diverter flow channel 95 can enter the mold cavity through the point gate corresponding to the pointed nozzle 7 after passing through the hot nozzle flow channel 801.

[0091] In the present application, the heating module 10 is configured in the main body 8, and a plurality of hot nozzle flow channels 801 are evenly arranged around the heating module 10. Specifically, the plurality of hot nozzle flow channels 801 are at the same distance from the heating module 10 and are arranged in sequence at equal central angles around the heating module 10. In this way, by optimizing the structure of the hot nozzle mechanism, on the one hand, by setting a plurality of hot nozzle flow channels 801, a dense distribution of the sharp nozzles 7 is achieved, so that it is convenient to set a corresponding sharp nozzle 7 for each hole of the deep-hole plate, realize independent glue injection of a single hole, ensure the processing and preparation of the deep-hole plate, and reduce the defect of the deep-hole plate caused by unbalanced glue injection of some holes; on the other hand, by setting the heating module 10 at the center position between the plurality of hot nozzle flow channels 801, it is beneficial to the heat balance of the plurality of hot nozzle flow channels 801, ensure the temperature uniformity of the injection glue, further realize glue injection balance, and ensure product yield.

[0092] In this embodiment, in the hot nozzle mechanism, the number of the hot nozzle flow channels 801 is set to four, and the four hot nozzle flow channels 801 are arranged roughly in a square. Correspondingly, the lower end of the body 8 is equipped with four pointed nozzles 7. Therefore, for a 96-well plate, there are 24 hot nozzle mechanisms, and these hot nozzle mechanisms are arranged in a matrix. Of course, in a variant embodiment, the number of hot nozzle flow channels 801 in the hot nozzle mechanism is not limited to this.

[0093] Furthermore, in the present embodiment, in the hot nozzle mechanism, any two hot nozzle flow channels 801 are independent of each other and are not connected to each other. That is, each hot nozzle flow channel 801 runs through the upper and lower end surfaces of the main body 8 separately, and each hot nozzle flow channel 801 is connected to a diversion flow channel 95. Of course, in a variation embodiment, it can also be set as follows: the upper sections of the multiple hot nozzle flow channels 801 in the main body 8 are combined into one, that is, a one-outlet-multiple-way channel is formed in the main body 8, and correspondingly, the number of glue outlets on the lower surface 62 of the lower diverter plate 6 changes accordingly to ensure that each glue outlet is connected to one of the main bodies 8.

[0094] Furthermore, the main body 8 has a cylindrical cavity located at its central axis, the upper end of the cavity is exposed to the upper end surface of the main body 8 and extends downward until it is adjacent to the lower end surface of the main body 8, and the heating module 10 is accommodated in the cavity with a suitable size, and the main body 8 is heated in a manner with as wide a coverage rate as possible in the longitudinal direction, thereby ensuring that the injection molding material in the hot nozzle flow channel 801 maintains a suitable temperature. Specifically, the heating device can be a heating rod or a heating wire.

[0095] Furthermore, the hot nozzle mechanism also includes a temperature sensing line 11 , which runs through the main body 8 from top to bottom, so as to detect the temperature of the entire main body 8 .

[0096] Furthermore, the outer surface of the main body 8 includes an arc portion 81 arranged on the outside of the hot nozzle flow channel 801, and a transition portion 82 connecting two adjacent arc portions 81. The outer surface of the arc portion 81 is concentrically arranged with the hot nozzle flow channel 801, that is, the arc portion 81 and the hot nozzle flow channel 801 are arranged one by one, and the number of the arc portions 81 is the same as the number of the hot nozzle flow channels 801. There are also multiple arc portions 81. Correspondingly, since the multiple hot nozzle flow channels 801 are evenly arranged around the central axis of the main body 8, the number of the transition portions 82 and the hot nozzle flow channels 801 is also the same.

[0097] On the same plane perpendicular to the central axis of the main body 8, the distance between the transition portion 82 and the central axis is smaller than the distance between the arc portion 81 and the central axis. In this embodiment, the transition portion 82 is an arc-shaped groove that is recessed toward the central axis. In this way, not only is the interference between the adjacent hot nozzle mechanisms avoided, which facilitates the close arrangement of the hot nozzle mechanisms, but also the size of the avoidance channel on the template 200 for the hot nozzle mechanisms is reduced, thereby improving the template strength.

[0098] In summary, the present invention has the following beneficial effects: on the one hand, it is possible to realize the processing and manufacturing of deep-hole plates by using hot runner injection molding process, with almost no waste generated, breaking the technical barriers of traditional cold runner injection molding of deep-hole plates and avoiding the waste problem; on the other hand, by setting point gates and pointed nozzles 7 corresponding to the multiple holes of the deep-hole plate, the multiple holes of the deep-hole plate are simultaneously injected with glue, thereby ensuring the product quality of the deep-hole plate and avoiding the bottom of the hole being incomplete due to the backflow of glue in some holes due to the asynchronous injection of glue into the multiple holes; on the other hand, by setting the heating plate, heating module 10, etc., the temperature of the injected glue is maintained stable, and by optimizing the flow channel of the flow channel mechanism, it is further ensured that the holes of the deep-hole plate are synchronously and balancedly injected with glue, thereby ensuring the product yield of the deep-hole plate.

[0099] <Second Embodiment>

[0100] The second embodiment of the present invention provides a hot runner mold system, which differs from the first embodiment only in that: Fig.11 , the connection between the tip 7 and the lower diverter plate 6. The difference is introduced below, and the rest of the contents that are the same as the first embodiment are not repeated.

[0101] Different from the first embodiment in which a main body 8 is arranged between the tip 7 and the lower diverter plate 6, in this embodiment, a plurality of glue outlets are formed on the lower surface of the lower diverter plate 6, and the tip 7 is arranged as a tip core and is attached to the lower surface of the lower diverter plate 6 through a flange 14, thereby directly realizing the connection between the tip 7 and the flow channel of the flow channel mechanism.

[0102] For a 96-well plate, the number of the glue outlets is 96. Correspondingly, the lower surface of the lower manifold plate 6 has 96 pointed nozzles 7 connected by flanges 14, and each pointed nozzle 7 corresponds to a hole area 201 of the deep well plate cavity on the template.

[0103] <Third Embodiment>

[0104] The third embodiment of the present invention provides a hot runner mold system, which differs from the first embodiment only in that: Fig.12 , the connection between the tip 7 and the lower diverter plate 6. The difference is introduced below, and the rest of the contents that are the same as the first embodiment are not repeated.

[0105] Different from the first embodiment in which a main body 8 is arranged between the pointed nozzle 7 and the lower diverter plate 6, in this embodiment, a plurality of glue outlets are formed on the lower surface of the lower diverter plate 6, each of which has a groove around it; the pointed nozzle 7 is arranged as a nozzle core, and the upper end of the nozzle core is embedded in the groove through a pressing cap 15, thereby directly realizing the connection between the pointed nozzle 7 and the flow channel of the flow channel mechanism.

[0106] For a 96-well plate, the number of the glue outlets is 96. Correspondingly, the lower surface of the lower manifold plate 6 has 96 sharp nozzles 7 connected by the pressure caps 15.

[0107] The detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. All equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hot runner mold system for deep hole plates, characterized in that: The hot runner device comprises a template and a hot runner device, wherein the template has a cavity of a deep hole plate and a plurality of point gates corresponding to the plurality of holes of the deep hole plate one by one, and the hot runner device comprises a main nozzle, a plurality of pointed nozzles matched with the plurality of point gates one by one, and a flow channel mechanism arranged between the main nozzle and the plurality of pointed nozzles, wherein a rubber flow channel is formed in the flow channel mechanism, and the main nozzle is connected to each of the pointed nozzles through the flow channel; The flow channel mechanism comprises: A first manifold, comprising at least one first flow channel opening; A second manifold, comprising at least one second flow channel opening; The flow channel docking assembly is arranged between the first manifold plate and the second manifold plate, and includes a connector having a hollow channel and a heater surrounding the outside of the connector. The first flow channel opening is connected to the second flow channel opening through the hollow channel.

2. The hot runner mold system for deep-hole plates according to claim 1, characterized in that: The flow channel mechanism includes a manifold plate, and the manifold plate includes a main surface with a plurality of flow channel openings. The hot runner device also includes a heating plate, and the heating plate is arranged on the main surface and surrounds the plurality of flow channel openings.

3. The hot runner mold system for deep-hole plates according to claim 2, characterized in that: The heating plate comprises a copper plate body and a heating wire embedded in the copper plate body.

4. The hot runner mold system for deep-hole plates according to claim 1, characterized in that: The connecting piece has two end surfaces arranged opposite to each other in the longitudinal direction thereof, and the hollow channel extends linearly along the longitudinal direction and connects the two end surfaces; The first manifold plate has a first sealing surface surrounding the first flow channel opening, and the second manifold plate has a second sealing surface surrounding the second flow channel opening; Among them, when the heater is in a non-heating state, one of the end surfaces is attached to the second sealing surface, and the other end surface is separated from the first sealing surface; when the heater is in a heating state, one of the end surfaces is attached to the second sealing surface, and the other end surface is attached to the first sealing surface.

5. The hot runner mold system for deep-hole plates according to claim 4, characterized in that: A portion of the template is located between the first manifold and the second manifold; The flow channel docking assembly further includes a fastener, the fastener is sleeved on the outside of the connecting piece, the fastener includes a fixing portion and a sleeve, and the heater is sleeved on the outside of the sleeve; When the heater is in a non-heating state, the fixing portion is clamped between the first sealing surface and a portion of the template, and its end surface is in contact with the first sealing surface; The sleeve freely extends from the fixing portion toward the second sealing surface.

6. The hot runner mold system for deep-hole plates according to claim 5, characterized in that: The fastener comprises an inner transition body and an outer flange, wherein the transition body and the flange are arranged separately and the two are matched with each other through a step structure; When the heater is in a non-heating state, the end surface of the transition body and the end surface of the flange are both in contact with the first sealing surface; The thermal expansion coefficient of the transition body is smaller than the thermal expansion coefficients of the flange and the connecting member.

7. The hot runner mold system for deep-hole plates according to claim 1, characterized in that: The number of holes in the deep-hole plate is 96, and the center distance between two adjacent pointed nozzles among the plurality of pointed nozzles is 9.0-9.5 mm.

8. The hot runner mold system for deep-hole plates according to claim 1, characterized in that: The path distances from the main nozzle along the flow channel to all the pointed nozzles are the same.

9. The hot runner mold system for deep-hole plates according to claim 8, characterized in that: The flow channel includes one 1-outlet 2-type flow splitting flow channel, two 1-outlet 3-type flow splitting flow channels, six 1-outlet 4-type flow splitting flow channels and twenty-four 1-outlet 4-type flow splitting flow channels extending in sequence.

10. The hot runner mold system for deep-hole plates according to claim 1, characterized in that: The flow channel mechanism includes a plurality of manifolds, a glue inlet formed on a manifold, and a plurality of glue outlets having the same number as the nozzles, and the main nozzle is connected to the manifold and butted against the glue inlet; Wherein, each of the glue outlets has a groove around it, and the pointed nozzle is configured as a nozzle core embedded in the groove through a pressing cap; or, The glue outlet is formed on the surface of a diverter plate, and the pointed nozzle is configured as a nozzle core that is attached to the surface through a flange.

11. The hot runner mold system for deep-hole plates according to claim 10, characterized in that: The flow channel mechanism includes a glue inlet and a plurality of glue outlets, and the glue inlet is connected to the main nozzle; The hot runner device also includes: A plurality of main bodies, each of the main bodies being integrally arranged; a heating module disposed in the main body; and a plurality of hot nozzle flow channels formed in the main body; The pointed nozzle is assembled on the main body, the pointed nozzle and the hot nozzle flow channel have the same number and correspond one to one, the two ends of the hot nozzle flow channel are respectively connected to the glue outlet and the pointed nozzle, and the multiple hot nozzle flow channels are evenly arranged around the heating module.

Images