Molded component with curved channel

Abstract

A system and method for manufacturing molded components having one or more curved channels. When a mold is in closed, a retractable pin assembly may be used to advance one or more curved pins into a mold. When a mold is opened, the retractable pin assembly may retract the one or more curved pins from the mold. The molded component formed in the mold can have one or more curved channels having the same shape as the one or more curved pins.

Description

19582.0015WOU1 | 2025-24008-P-WOMOLDED COMPONENT WITH CURVED CHANNELCROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is being filed on January 14, 2026, as a PCT International application and claims the benefit of and priority to U.S. Provisional Application No.63 / 746,863, filed on January 17. 2025, the disclosure of which is hereby incorporated by reference in its entirety.BACKGROUND

[0002] Injection molding is a manufacturing process used to create an unlimited array of molded components, from a single prototype to millions of identical parts. Injection molding generally refers to the process of creating a molded component by filling a mold cavity with a molten feedstock, allowing the molten feedstock to cool inside of the mold cavity’ so that it takes the shape of the cavity’, and then removing the molded component from the cavity'. Plastic injection molding can be used to create components for nearly any industry including medical devices, electronics, automotive, consumer goods, and packaging.

[0003] A benefit of injection molding is that mold cavities can be designed to create components of nearly any shape and size, for almost any use-case. How ever, ith increasing complexity of injection molded components, challenges can arise in the design and manufacture of these components.SUMMARY

[0004] In general terms, this disclosure is directed to injection molded components. In a non-limiting example, the disclosure related to a system and method for manufacturing molded components having one or more curved channels.

[0005] One aspect is an injection molding machine for manufacturing a molded component, the injection molding machine comprising: an injection unit for supplying molten feedstock; a clamping unit including: a stationary' platen; a moveable platen; a mold assembly including: a cavity side mold portion connected to the stationary platen; and a core side mold portion connected to the movable platen; and a platen actuator configured to move the moveable platen to open and closed positions; and a retractable pin assembly comprising: a curved pin that defines a curved channel within the molded component; and a pin actuator that advances the curved pin into the mold assembly when the movable platen is in a closed position and retracts the curved pin out of the mold assembly when the movable platen is in an open position.19582.0015WOU1 | 2025-24008-P-WO

[0006] Another aspect is a mold system comprising: a mold assembly: a retractable pin assembly having an extended and a retracted position; and at least one curved pin for defining a channel within the mold assembly, wherein the retractable pin assembly positions the curved pin in an extended position when the retractable pin assembly is closed and positions the curved pin in a retracted position when the retractable pin assembly is opened.

[0007] Still another aspect is a method of manufacturing a molded component, the method comprising: advancing a curved pin into a mold assembly; injecting molten feedstock into the mold assembly around the curved pin; and retracting the curved pin from the mold assembly.

[0008] A further aspect is a molded component comprising: an exterior; an interior; atarget; an access point arranged at the exterior of the molded body; and a curved channel extending at least partially through the interior of the molded body and extending from the access point to the target.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a schematic diagram illustrating an example injection molding machine for manufacturing a molded component.

[0010] FIG. 2 is a schematic diagram illustrating another example injection molding machine.

[0011] FIG. 3 is a schematic diagram illustrating an example molded component having a straight channel.

[0012] FIG. 4 is a schematic diagram illustrating an example molded component having a curved channel.

[0013] FIG. 5 is a schematic diagram illustrating an example mold system.

[0014] FIG. 6 is a section view of an example mold system with a retractable pin assembly in a closed position.

[0015] FIG. 7 is a perspective view of an example mold system in a closed position.

[0016] FIG. 8 is section view of an example mold system wi th a retractable pin assembly in an open position.

[0017] FIG. 9 is a perspective view illustrating an example mold system in a closed position.

[0018] FIG. 10 is a perspective view illustrating an example mechanism for retracting the curved pin when the mold system depicted is opened.19582.0015WOUI | 2025-24008-P-WO

[0019] FIG. 11 is a flow chart illustrating an example method of manufacturing a molded piece.

[0020] FIG. 12 is a flow chart illustrating an example method of manufacturing a molded piece.

[0021] FIG. 13 is a perspective view illustrating operation, initating closing of the mold system from an open position.

[0022] FIG. 14 is a schematic diagram illustrating operation, injecting molten feedstock F into the mold system.

[0023] FIG. 15 is a perspective view illustrating operation, initating opening of the mold system from a closed position.

[0024] FIG. 16 illustrates an example molded component in the mold cavity after the curved pin has been retracted, but before the molded component has been ejected.

[0025] FIG. 17 illustrates an example molded component.DETAILED DESCRIPTION

[0026] Various embodiments will be described in detail with reference to the drawings, wherein the reference numerals represent like parts and assemblies throughout the several views. Reference to various embodiments does not limit the scope of the claims attached hereto. Additionally, any examples set forth in this specification are not intended to be limiting and merely set forth some of the many possible embodiments for the appended claims.

[0027] FIG. 1 is a schematic diagram illustrating an example injection molding machine 100 for manufacturing a molded component 102. In the example illustrated in FIG. 1, the injection molding machine 100 includes an injection unit 104 and a clamping unit 106. In this example, the clamping unit 106 includes a mold system 108, a stationary platen 132 and a movable platen 134. The example mold system 108 further includes a mold assembly 110 and a retractable pin assembly 112. A feedstock F is also illustrated.

[0028] The injection molding machine 100 operates to manufacture the molded component 102 using injection molding. The injection molding machine 100 includes the injection unit 104 and the clamping unit 106.

[0029] The molded component 102 is a component manufactured using a molding process, such as by the injection molding machine 100. In this example, the molded component 102 has a curved channel as discussed in further detail herein.19582.0015WOU1 | 2025-24008-P-WO

[0030] The injection unit 104 is a portion of the injection molding machine 100 that heats feedstock F, melts it to form molten feedstock F, and then supplies the molten feedstock F to the clamping unit 106 and into the mold system 108.

[0031] The clamping unit 106 is another portion of the injection molding machine 100. In this example, the clamping unit 106 includes a stationary platen 132 and a movable platen 134. between which the mold system 108 is positioned. The clamping unit 106 applies a clamp force to keep the mold system 108 securely closed during injection and then opens the mold system 108 once the part is ready for ejection. For example, the clamping unit 106 can apply a clamp force to secure the mold system 108 in a closed position while the molten feedstock F is supplied into the mold system 108. When the injection process is completed, the clamping unit 106 opens, which in turn also opens the mold system 108.

[0032] The mold system 108 includes a mold assembly 110 forming a mold cavity 122 having the shape of the molded component 102. The mold system 108 also includes a retractable pin assembly 112 to define the curved channel 180 within the molded component 102. The example depicted in FIG. 1 is a section view of half of the mold system 108 that is located within the stationary platen 132 of the clamping unit 106. A second half of the mold system 108 (shown, for example, in FIGS. 7, 9, and 10) is located w ithin the movable platen 134 of the clamping unit 106.

[0033] The mold assembly 110 is a portion of the mold system 108 which defines the mold cavity 122, where the molded component 102 is formed. For example, the mold assembly 110 can include internal molding components. In some embodiments, the mold assembly 110 is formed of multiple layers that surround the mold cavity 122. For example, the mold assembly 110 can include a cavity stack. The multiple layers allow the mold assembly 110 to be opened and closed by the clamping unit 106.

[0034] The retractable blade assembly 112 is a mechanism that advances and retracts a curved blade 192 into and out of the mold assembly 110 to form a curved channel 180 in the molded component 102. In some implementations, the retractable blade assembly 112 is a dual action slide. In some embodiments the retractable blade assembly 112 includes one or more curved blades 192. The example depicted in FIG. 1 includes two curved blades 192a and 192b. One or more curved blades 192 can be included to form one or more curved channels (which, in this example, includes curved channels 180a and 180b).19582.0015WOU1 | 2025-24008-P-WG

[0035] In some embodiments the retractable pin assembly 112 is operated by the clamping unit 106. such that the curved pin is inserted into the mold assembly 110 when the clamping unit 106 is closed, and is retracted when the mold assembly 110 is opened. Examples of the retractable pin assembly 112 are illustrated and described in further detail with reference to FIGS. 6 - 10.

[0036] After the molten feedstock F is injected into the mold system 108 and cools, the molded component 102 is formed having a shape defined by the mold system 108. The clamp force supplied by the clamping unit 106 is then released and reversed to open the mold system 108. When the mold system 108 is in an open position, the molded component 102 can be ejected. The injection unit 104, clamping unit 106, and mold system 108 are described in further detail with reference to FIG. 2.

[0037] FIG. 2 is a schematic diagram illustrating another example injection molding machine 100. The example injection molding machine 100 includes an injection unit 104 and a clamping unit 106. The example injection unit 104 includes a supply receptacle 114 and a barrel assembly 116. The example barrel assembly 116 includes a screw actuator 124, a reciprocating screw 126, a heater 128, and a nozzle 130. The example clamping unit 106 includes a stationary platen 132, a movable platen 134, a platen actuator 136, and a mold system 108. The example mold system 108 includes a mold assembly 110 and a retractable pin assembly 112. The example mold assembly 110 has a cavity side mold portion 138 and a core side mold portion 140. The retractable pin assembly 112 includes the pin guide assembly 142, the stationary portion 144 and the movable portion 146. The feedstock F is also show n.

[0038] The injection unit 104 operates to melt the feedstock F and inject the molten feedstock F into the mold system 108. As shown in FIG. 2, the mold assembly 110 has a cavity side mold portion 138 and a core side mold portion 140. The cavity side mold portion 138 is connected to the stationary platen 132. The core side mold portion 140 is connected to the movable platen 134. The portion of the example mold assembly 110 shown in FIG. 2 is the cavity side of the mold assembly 110.

[0039] The supply receptacle 114 is configured to receive and supply the feedstock F to the injection unit 104. For example, the feedstock F may be in the form of pellets, beads, or other solid particles. In some examples, the supply receptacle 114 is a hopper. The feedstock F can include a wide variety of plastic materials, rubber materials, metal materials, or material alloys with or without fillers and other additives to achieve a desired material property. The supply receptacle 114 is joined to the barrel assembly 116.19582.0015WOU1 | 2025-24008-P-WOFor example, the supply receptacle 114 can bejoined to the barrel assembly 116 at a feed throat. In some embodiments, the feedstock F is gravity-fed from the supply receptacle 114 into the barrel assembly 116.

[0040] The example barrel assembly 116 includes the screw actuator 124, the reciprocating screw 126, the heater 128, and the nozzle 130. In some embodiments, the barrel assembly 116 includes a plurality of independently controlled heaters 128. The barrel assembly 116 is configured to melt the feedstock F and drive it toward the clamping unit 106.

[0041] The screw actuator 124 is an actuator that is coupled to the reciprocating screw 126 and operates to power the movement of the reciprocating screw 126. For example, the screw actuator 124 drives and controls rotation of the reciprocating screw 126 within the barrel assembly 116 and translation of the reciprocating screw 126 toward the nozzle 130. The heater 128 is connected to the barrel assembly 116 and is configured to distribute heat throughout the barrel assembly 116. The reciprocating screw 126 is configured to convert the solid feedstock F into a flow of molten feedstock F via heat, sheer force, and friction as it rotates within the barrel assembly 116. The reciprocating screw 126 is also configured to drive the molten feedstock F through the nozzle 130 as it moves toward the clamping unit 106. The nozzle 130 is coupled to the mold system 108 and is configured to guide the molten feedstock F into the mold system 108.

[0042] In some embodiments, the stationary platen 132 is a stationary portion of the clamping unit 106. In some embodiments the stationary platen 132 is configured to maintain the alignment of the mold system 108 with the nozzle 130 of the injection unit 104. For example, the stationary platen 132 can be configured to withstand the force applied by the injection unit 104 while injecting the molten feedstock F into the mold system 108. In some embodiments, the stationary platen 132 also contains a sprue, runners, and gates to guide the flow of the molten feedstock F into the mold assembly 110. The stationary platen 132 remains stationary' throughout the injection molding process. The cavity side mold portion 138 is fixed within the stationary platen 132.

[0043] The movable platen 134 is a movable portion of the clamping unit 106. In some embodiments, the movable platen 134 is configured to move back and forth between open and closed positions of the clamping unit 106. As the clamping unit 106 moves between open and closed positions, so does the mold system 108. For example, the platen actuator 136 operates to move the movable platen 134 toward the stationary platen 132, thereby closing the mold system 108. The platen actuator 136 also operates19582.0015WOU1 | 2025-24008-P-WOto move the movable platen 134 away from the stationary platen 132, thereby opening the mold system 108. The core side mold portion 140 is connected to the movable platen 134. In some embodiments, the core side mold portion 140 includes an ejection system configured to push the molded component 102 out of the mold system 108. In other embodiments, the interface between the core side mold portion 140 and the cavity' side mold portion 138 includes an ejection mechanism configured to push the molded component 102 out of the mold system 108. For example, the ejection system can push the molded component 102 out of the mold system 108 as the movable platen 134 moves the core side mold portion 140 away from the cavity side mold portion 138.

[0044] The mold system 108 includes the mold assembly 110 and the retractable blade assembly 112. Also shown in the example of FIG. 2 is the mold cavity 122 a portion of which is within the cavity side mold portion 138 of the mold assembly 110.

[0045] The retractable blade assembly 112 includes the blade guide assembly 142, the stationary7portion 144, and the movable portion 146. In some embodiments, the stationary portion 144 is coupled to the stationary platen 132. In other embodiments, the stationary portion 144 is coupled to the movable platen 134. In some implementations, the stationary portion 144 is a gearbox. In some other embodiments, the movable portion 146 is coupled to the movable platen 134. In some implementations, the movable portion 146 is a rack gear retainer. In other embodiments, the movable portion 146 is coupled to the stationary platen 132. The blade guide assembly 142 includes at least one curved blade 192 that extends into the mold assembly 1 10 to define a curved channel 180 within the molded component 102. In some implementations, the curved blade 192 pivots or rotates into the mold assembly 110.

[0046] The retractable pin assembly 112 is configured to extend and retract the curved pin 192 into and out of the mold assembly 110. The retractable pin assembly 112 moves between open and closed positions. For example, the retractable pin assembly 112 is in a closed position when the mold system 108 is in a closed position. When in the closed position, the movable portion 146 is positioned closer to the stationary portion 144.

[0047] Likewise, the retractable blade assembly 112 is in an open position when the mold system 108 is in an open position. When in the open position, the movable portion 146 is positioned further away from the stationary portion 144. In some embodiments, the curved blade 192 is extended into the mold cavity 122 when the retractable blade assembly 112 is in the closed position. In some embodiments, when the retractable blade19582.0015WOU1 | 2025-24008-P-WOassembly 112 is in the open position, the curved blade 192 is retracted outside of the mold cavity 122. The blade guide assembly 142 is configured to extend and retract the curved blade 192 into and out of the mold assembly 110 in response to the retractable blade assembly 112 moving to open and closed positions. In some embodiments, the blade guide assembly 142 is an ejection mechanism for the curved blade 192. The retractable blade assembly 112 is discussed in further detail in reference to FIGS. 6-10.

[0048] While the mold system 108 is in a closed position and the curved pin is extended into the mold assembly 110, the injection unit 104 operates to inject a stream of molten feedstock F into the mold assembly 110 of the mold system 108. In some embodiments, the mold system 108 further includes a cooling system to more rapidly cool and solidify the molten feedstock F within the mold cavity. In some embodiments, the cooling system includes tubes configured to direct air or water in or around the mold system 108. As previously described, the mold system 108 may also include an ejection actuator configured to eject the molded component 102 when the movable platen 134 moves away from the stationary’ platen 132, placing the mold system 108 in the open position. The mold system 108 is discussed in further detail in reference to FIGS. 9-10.

[0049] FIG. 3 is a schematic diagram illustrating an example molded component 102 having a straight channel formed using a first segment 168 and a second segment 170. In this example, the molded component 102 includes an access point 160, an obstruction 164, and a target 162. A straight-line path 166 is also shown.

[0050] FIG. 3 illustrates an example scenario in which a molded component 102 requires a channel to extend from the access point 1 0 to a target 162, but an obstruction 164 blocks (at “X”) the straight-line path 166 directly between the two. As a result, the molded component 102 either cannot include the channel, or an alternative path must be found to traverse around the obstruction 164.

[0051] One possible option to avoid the obstruction is to form a channel of two segments in an L-shaped path. In this example, the channel is formed using two straight segments, including a first segment 168 and a second segment 170. The first segment 168 is formed using a straight pin that is inserted into the cavity at the access point 160 to a point adjacent the target 162. The second segment 170 is formed using a straight pin, such as by inserting the pin into the cavity from the location of the target 162. Injection molding is then performed to form the molded component 102 including a single L-shaped channel.19582.0015WOU1 | 2025-24008-P-WG

[0052] However, there are multiple potential drawbacks to forming the channel using multiple straight segments as shown in FIG. 3. For example, the injection molding process shown in FIG. 3 may lead to artifacts such as flashing. Flashing is a defect that occurs when unwanted excess plastic forms on the parting lines, gaps between steel inserts, or edges of molded components. In the context of fluidic channels, flashing can lead to critical defects in the molded component 102 such as a blockage, a leak, damage to the target 162, or other interferences to the fluid flow or usability of the target 162. Another potential drawback is that it can be difficult to precisely align the two straight segments. Misalignment can lead to the straight segments not intersecting, resulting in disjoint channels, such that fluid cannot flow from one channel to the other. The misalignment can also lead to only partially joined channels, exhibiting similar problems as the presence of flashing discussed above.

[0053] FIG. 4 is a schematic diagram illustrating an example molded component 102 having a curved channel 180. The example molded component 102 includes an access point 160, a target 162, an obstruction 164, and a molded body 182. A straight-line path 166 is shown. Also illustrated is a circle C with a radius R. Also depicted are three points where the circle C intersects the molded component 102: an access point intersection 184, an unobstructed region 186, and a target intersection point 188.

[0054] FIG. 4 illustrates the same example scenario shown in FIG. 3 in which a molded component 102 requires a channel to extend from the access point 160 to a target 1 2, but an obstruction 164 blocks (atC'X”) the straight-line path 166 directly between the two. As a result, the molded component 102 either cannot include the channel, or an alternative path must be found to traverse around the obstruction 164.

[0055] A curved channel 180 can be formed in the molded body 182 of the molded component 102, and extends from the access point 160 to the target 162. The curved channel 180 has a radius of curvature R that is sufficient to avoid the obstruction 164. In some embodiments, the curved channel 180 is formed of a single curved segment, which overcomes the drawbacks of having two or more segments as described with reference to the example shown in FIG. 3. In the example depicted in FIG. 4, the curved channel 180 is formed in the molded body 182 of the molded component 102 along the circumference of the circle C, which intersects w ith at least two points with the molded body 182: the access point intersection 184 and the target intersection point 188. The radius R of the circle C can be determined by selecting a third intersection point with the molded body 182. For example, by providing a third intersection point at the19582.0015WOU1 | 2025-24008-P-WOunobstructed region 186, the radius R of the circle and, thereby, the path of a curved fluidic channel from the access point 160 to the target 162 can be determined. The radius R of the circle can vary, depending on where, within the unobstructed region 186, the path of the fluidic channel is desired.

[0056] In some embodiments, two or more curved channels can be formed having the same or different radius R as the example depicted in FIG. 4. For example, a second curved channel can be formed on the other side of the molded component, mirroring the curved channel depicted in FIG. 4. (An example molded component having two curved channels is illustrated in FIG. 18.) In another example, a second curved channel having a larger or smaller radius as the curved channel depicted in FIG. 4 can be formed on the same side of the molded component as the curved channel depicted in FIG. 4 to reach a different second target point. Other arrangements or combinations of curved channels can be formed in the molded component 102 as desired.

[0057] FIG. 5 is a schematic diagram illustrating an example mold system 108. The example mold system 108 includes a mold assembly 110 and a retractable pin assembly 112. In some embodiments, the retractable pin assembly 112 includes a movable portion 146, a pin guide assembly 142 and a guide rail 190. In some examples, the pin guide assembly 142 includes a curved pin 192 and a pin actuator 194. Also shown is a radial point 196 at a radius R from the curved pin 192.

[0058] The guide rail 190 is a portion of the retractable pin assembly 112 and is positioned to keep the movable portion 146 in alignment with the mold assembly 110. For example, the movable portion 146 can move bilaterally along the guide rail between open and closed positions. For example, the retractable pin assembly 112 can be in a closed position when movable portion 146 is closer to the mold assembly 110. Likewise, the retractable pin assembly 112 can be in an open position when the movable portion 146 is farther from the mold assembly 110.

[0059] The curved pin 192 is configured to extend into the mold assembly 110 to define a channel within the molded component 102. For example, as the movable portion 146 moves toward the mold assembly 110, the curved pm 192 extends into the mold assembly 110. Likewise, as the movable portion 146 moves away from the mold assembly 110, the curved pin 192 retracts from the mold assembly 110.

[0060] In some embodiments, the retractable pin assembly 112 can further include a pin actuator 194. The pin actuator 194 can be included to activate the movement of the curved pin 192. For example, the pin actuator 194 can activate a rotational movement of19582.0015WOU1 | 2025-24008-P-WOthe curved pin 192. In some embodiments, the pin actuator can be a motor, a gear, or other device capable of initiating motion. As shown in FIG. 5. in some embodiments, the pin actuator 194 can be coupled to the movable portion 146 so that, when the movable portion 146 moves toward the mold assembly 110, the pin actuator 194 can cause the curved pin to extend into the mold assembly 110 in a first direction. For example, the pin actuator 194 can cause the curved p in to extend into the mold assembly 110 in a clockwise direction. In other examples, the curved pin can extend into the mold assembly 110 in a counterclockwise direction. Likewise, when the movable portion 146 moves away from the mold assembly 110, the pin actuator 194 can cause the curved pin 192 to retract from the mold assembly 110 in an opposite direction. For example, the curved pin 192 can retract from the mold assembly 110 in a counterclockwise direction. In other embodiments, the curved pin 192 can retract from the mold assembly 110 in a clockwise direction. In still other embodiments, instead of retracting from the mold assembly 110 in an opposite direction, the curved pin 192 can continue extending in a first direction around radial point 196 until it is outside of the mold assembly 110. In other examples, the pin actuator 194 can be positioned outside of the retractable pm assembly 112. In some embodiments, the pin actuator 194 can operate independently from the retractable pin assembly 112. For example, the pin actuator can be configured at radial point 196. In some embodiments, radial point 196 can be configured at a distance R from the curved pins. For example, the distance R can be the radius of the curvature defined by the curved pin 192.

[0061] FIG. 6 is a section view of an example mold system 108 with a retractable pin assembly 112 in a closed position. The mold system 108 includes the mold assembly 110 and retractable pin assembly 112. The retractable pin assembly 112 includes the stationary portion 144 and the movable portion 146. The movable portion 146 includes a pin actuator 194. The stationary portion 144 includes the curved pin 192, a pin guide channel 200, and a rotary actuator 202. The mold assembly 110 includes the mold cavity 122 and pin stop guide 204.

[0062] The pin actuator 194 is provided to activate the advancement and retraction of the curved pin 192. In the example shown in FIG. 6, the pin actuator 194 is coupled to the movable portion 146. Therefore, as the movable portion 146 is moved closer to the mold assembly 110, the pin actuator 194 causes the curved pin to advance into the mold assembly 110. Likewise, as the movable portion 146 is spaced away from the mold19582.0015WOU1 | 2025-24008-P-WGassembly 110, the pin actuator 194 causes the curved pin to retract from the mold assembly.

[0063] The pin guide channel 200 is provided to form a path for the curved pin 192 to move within. For example, the pin guide channel 200 can guide the curved pin 192 between extended and retracted positions and position the pin such that it precisely enters a given region within the mold cavity 122. In some embodiments, the pin guide channel 200 can also prevent the curved pin 192 from advancing or retracting too far. As shown in FIG. 6, the pin guide channel 200 is formed within the stati onary portion 144.

[0064] In some embodiments, the rotary actuator 202 can be provided in some embodiments to activate a rotational movement of the curved pin 192. In some embodiments, as shown in FIG. 6, the pin actuator 194 can couple with the rotary actuator 202 to cause the rotary actuator 202 to rotate in response to the movable portion 146 moving toward or away from the mold assembly 110. For example, the pin actuator 194 can include prongs that couple with corresponding prongs on the rotary7actuator 202 such that when the pin actuator 194 moves in one direction, the rotary actuator 202 rotates in an opposite direction.

[0065] The curved pin 192 is provided to extend into the mold cavity 122 of the mold assembly 110 to define a channel within the molded component 102. As shown in FIG. 6, a second curved pin can also be provided to form a second curved channel. In the example shown, the second curved pin can mirror the curved pin 192, forming a channel curving in the opposite direction. In other embodiments, the second curved channel can curve in the same direction as the curved pin 192. Other combinations of two or more curved pins are possible to define other curved channel pathways. The curved pin 192 is described in further detail with respect to FIG. 8.

[0066] In some embodiments, the blade stop guide 204 can provide an interface to define a final extended position of the tip of the curved blade 192. In some implementations, the blade stop guide 204 is a blade shutoff. The blade stop guide 204 can prevent the curved blade 192 from overextending beyond a desired point within the mold cavity 122. In some embodiments, the blade stop guide 204 can be incorporated into other features within the mold cavity 122. For example, the blade stop guide 204 can be positioned at a location within the mold cavity7122 that defines the target 162 of the molded component 102. For example, this can ensure that the curved blade 192 defines a precise channel within the molded component 102 spanning from the access point 160 to a target 162.19582.0015WOU1 | 2025-24008-P-WO

[0067] In some implementations, the pin actuator 194, the pin guide channel 200, the rotary actuator 202, and the curved pin 192 form the pin guide assembly 142.

[0068] FIG. 7 is a perspective view of an example mold system 108 in a closed position. The mold system 108 includes the stationary portion 144, the movable portion 146, the mold assembly 110, a water fitting 228, and an air fitting 230. The mold assembly 110 includes a cavity side retainer block 210, a core side retainer block 212, a cavity insert 214, and a core insert 216. The stationary portion 144 includes a stationary portion top 218 and a stationary portion bottom 220. The movable portion 146 includes a movable portion top 222, a movable portion bottom 224, and a guide passage 226.

[0069] The mold system 108 depicted in FIG.7 is in a closed position. The mold assembly 110, where the molded component 102 is formed, can formed of multiple layers to define the mold cavity 122 and allow for the mold assembly 110 to be opened and closed.

[0070] In some embodiments, the cavity' side retainer block 210 can retain the cavity insert 214 and engages with the rest of the clamping unit 106 to enable the mold system 108 to be opened and closed. The cavity side retainer block 210 can also define the depth of one half of the mold cavity 122, which in turn determines the depth of the molded component 102. Finally, the cavity side retainer block 210 can retain other sub inserts, such as ejection components, cooling components, and other molding tools. The core side retainer block 212 serves a similar function to the cavity side retainer block 210. In some examples, the core side retainer block 212 retains the core insert 216 and can define the depth of the other half of the mold cavity 122. In some embodiments, the core side retainer block 212 can retain ejection components, cooling components, and other mold components in addition to or alternatively from the cavity side retainer block 210.

[0071] In some embodiments, the cavity insert 214 can define one half of the mold cavity 122. The cavity insert 214 can define the shape and surface details for one half of the molded component 102. Likewise, in some examples, the core insert 216 can define the shape and surface details of the other half of the molded component 102. The cavity insert 214 or the core insert 216 can also include the pin stop guide 204 shown and described with respect to FIG. 6. When the mold system 208 is in a closed position, cavity insert 214 and core insert 216 couple together to define the mold cavity 122. As the molten feedstock F is injected into the mold assembly 110, it fills the mold cavity' 122 and forms into the shape of the molded component 102.19582.0015WOU1 | 2025-24008-P-WO

[0072] Also shown in FIG. 7 is the retractable pin assembly 112 in a closed position, with the movable portion 146 positioned close to the stationary portion 144. such that the curved pin 192 is extended into the mold cavity 122 formed by the mold assembly 110. For example, the curved pin 192 can be extended into the mold cavity 122 before the molten feedstock F is injected into the mold cavity 122. In some embodiments, the movable portion 146 may be in physical contact with the stationary portion 144 in a closed position.

[0073] In some embodiments, the stationary portion top 218 and stationary portion bottom 220 house components of the pin guide assembly 142. For example, the curved pin 192 and rotary actuator 202 can be secured between the stationary portion top 218 and stationary portion bottom 220. Additionally, the pin guide channel 200. which provides a path for the curved pin 192 to enter the mold cavity 122 at a specific height, can be defined by a separate component sealed between the stationary portion top 218 and stationary7portion bottom 220. In other embodiments, the pin guide channel 200 can be provided by the stationary portion top 218 or stationary’ portion bottom 220 themselves.

[0074] In some embodiments, the movable portion top 222 and movable portion bottom 224 can also cover and secure components of the blade guide assembly 142. For example, the blade actuator 194 can be housed between the movable portion lop 222 and movable portion bottom 224. In addition, the movable portion 146 can include the guide passage 226 a slide block pin 250 configured to engage with the movable portion 146 to extend and retract the blade guide assembly 142. In some embodiments, the slide block pin 250 is a cam pin. The slide block pin 250 and mechanism for extending and retracting the blade guide assembly 142 is shown and described with further detail with respect to FIGS. 9-10.

[0075] In some embodiments, the water fiting 228 is configured to supply water from an external source and is used to cool the mold system 108 which, in turn, accelerates the solidification of the molten feedstock F. In some examples, the air fiting 230 supplies compressed air from an external source and is used to cool the mold system 108. In particular, the air fiting 230 can be used to reach a region that cannot be easily cooled by water. Once the molten feedstock F has been solidified, the retractable pin assembly 112 can be moved into an open position, such that the curved pin is retracted from the mold cavity 122, leaving behind a curved channel within the molded component 102. The mold system 108 can then be opened and the molded component 102 can be19582.0015WOU1 | 2025-24008-P-WOejected. These steps are shown and described in further detail with respect to FIGS. 13-17.

[0076] FIG. 8 is section view of an example mold system 108 with a retractable pin assembly 112 in an open position. The mold system 108 includes the mold assembly 110 and retractable pin assembly 112. The retractable pin assembly 112 includes the stationary’ portion 144 and the movable portion 146. The movable portion 146 includes a pin actuator 194. The stationary portion 144 includes the curved pin 192, a pin guide channel 200, and a rotary actuator 202. The curved pin 192 includes an actuator interfacing portion 240, channel defining portion 242, and end point 244. The mold assembly 110, including the mold cavity' 122, is also shown.

[0077] As shown in FIG. 8. the retractable pin assembly 112 is in an open position. In some embodiments, the retractable pin assembly 112 is in an open position when the movable portion 146 spaced from the stationary portion 144. As the movable portion 146 is moved away from the stationary portion 144, the pin actuator 194 engages with the rotary actuator 202 which, in turn, activates the motion of the curved pin 192. In some examples, the rotary actuator 202 can be a gear such as a circular gear, spur gear, toothed wheel, cog, or gearwheel. In some embodiments, the pin actuator 194 can be a rack gear designed to activate one or more rotary' actuator 202 simultaneously, turning linear motion into rotational motion. In other examples, the pin actuator 194 can include additional geometries that do not activate the rotary actuator 202 such that, even if pin actuator 194 continues to advance in a certain direction, these additional geometries will not engage with the rotary’ actuator 202 so that the curved pin 192 will not extend or retract further than desired.

[0078] The actuator interfacing portion 240 of the curved pin 192 is the portion of the curved pin 192 engages with the rotary actuator 202 such that the rotation of the rotary actuator in one direction causes the pin to extend into the mold assembly 110 and the rotation of the rotary actuator 202 in the opposite direction causes the pin to retract from the mold assembly 110. In some embodiments the actuator interfacing portion 240 can include progs to interface with corresponding prongs on the rotary actuator 202. For example, the rotary actuator 202 can cause the curved pin 192 to extend and retract in a circular arc. The ability' to retract in a circular arc, rather than a straight line, is especially important as it allows the curved pin 192 to retract from the molded component 102, after it solidifies in the mold cavity 122, without damaging the curved channel 180 that it leaves behind.19582.0015WOUI | 2025-24008-P-WO

[0079] The channel defining portion 242 of the curved pin 192 is the portion of the curved pin 192 that defines the shape of the channel in the molded component 102. In some examples, the channel defining portion 242 is the only part of the curved pin 192 that enters the mold cavity 122.

[0080] The end point 244 is the tip of the curved pin 192. In some embodiments, the end point 244 can interface with a pin stop guide 204 when in an extended position, as described with respect to FIG. 6. When in a retracted position the end point 244 is retracted outside of the mold assembly 110. In some embodiments, as shown in FIG. 8, when in a retracted position, the end point 244 is within the stationary portion 144.

[0081] FIG. 9 is a perspective view illustrating an example mold system 108 in a closed position. The mold system 108 includes the mold assembly 110, the stationary platen 132, the movable platen 134, the guide passage 226, the slide block pin 250, and a clamping unit alignment pin 252. The mold assembly 110 includes the mold cavity 122, the cavity' side retainer block 210, the core side retainer block 212, the cavity insert 214, and the core insert 216. Molded component 102 is also shown.

[0082] As shown in FIG. 9, the retractable pin assembly 112 is in a closed position. In some embodiments, the retractable pin assembly 112 is in a closed position when the movable portion 146 adjacent to the stationary portion 144. In other embodiments, the retractable pin assembly 112 is in a closed position when the movable portion 146 makes physical contact with the stationary portion 144.

[0083] The slide block pin 250 is configured to engage with the movable portion 146 such that, when the mold system 108 is in a closed position, the retractable pin assembly 112 is also in a closed position. For example, as the mold system 108 is opened, the slide block pin 250 can cause the movable portion 146 to slide away from the stationary portion 144. In some embodiments, the slide block pin 250 can be secured to the movable platen 134. In other embodiments, the slide block pin 250 can be secured to the stationary platen 132. In some examples, the slide block pin 250 can fit through the guide passage 226. The guide passage 226 creates a passage through the movable portion 146 that provides an interface for the slide block pin 250 to engage with the movable portion 146. For example, the guide passage 226 can extend through all or a portion of the movable portion top 222. In some examples, the guide passage 226 can extend through all or a portion of the movable portion bottom 224. In another example, the guide passage 226 can extend at an angle to the movable portion top 222 or movable portion bottom 224.19582.0015WOU1 | 2025-24008-P-WO

[0084] In some embodiments, the clamping unit alignment pin 252 can maintain alignment of the stationary platen 132 and the movable platen 134 when the mold system 108 moves back and forth between open and closed positions. In some implementations, the clamping unit alignment pin 252 is a leader pin. While the mold system 108 is closed, the injection unit 104 can inject molten feedstock F into the mold cavity' 122 of the mold assembly 110 to form the shape of the molded component 102.

[0085] FIG. 10 is a perspective view illustrating an example mechanism for retracting the curved blade 192 when the mold system 108 depicted in FIG. 9 is opened. The mold system 108 includes the mold assembly 110, the stationary platen 132, the movable platen 134, the blade actuator 194, the slide block pin 250, and a clamping unit alignment pin 252. The mold assembly 110 includes the mold cavity 122. the cavity side retainer block 210, the core side retainer block 212, the cavity insert 214, and the core insert 216. Molded component 102 is also shown.

[0086] As shown in FIG. 10, the movable platen 134 moves away from the stationary platen 132, opening the mold system 108. In some examples, the mold system 108 can be opened after the molten feedstock F has solidified in the mold cavity 122, forming the molded component 102. As the movable platen 134 moves away from the stationary' platen 132, the slide block pin 250 moves in one direction through the movable portion 146, causing the movable portion 146 to move a ay from the stationary portion 144. As the movable portion 146 moves away from the stationary portion 144, the retractable pin assembly 112 opens and the pin actuator 194 causes the curved pin 192 to retract from the mold assembly 110.

[0087] As depicted in the example in FIG. 10, as the mold system 108 opens, the mold assembly 110 is also opened. For example, as the movable platen 134 moves ayvay from the stationary' platen 132, the cavity side retainer block 210 moves away from the core side retainer block 212.1n other examples, the core side retainer block 212 can be moved away from the cavity side retainer block 210 as the mold system 108 is opened. In some embodiments, as the mold system 108 is opened, the molded component 102 can be ejected from the mold assembly 110.

[0088] FIG. 11 is a flow chart illustrating an example method of manufacturing a molded piece. In this example, the method 280 includes operations 282, 284, 286, 288, and 290. Other embodiments can include more, fewer, or different operations than the example illustrated in FIG. 11.19582.0015WOU1 | 2025-24008-P-WO

[0089] The operation 282 is performed to initiate closing of the mold system 108 from an open position. For example, the mold system 108 can be closed when the movable platen 134 of the clamping unit 106 moves toward the stationary platen 132.

[0090] The operation 284 is performed to advance the curved pin 192. For example, the curved pin 192 can be advanced by the pin actuator 194. In some examples, operation 282 and operation 284 can occur simultaneously.

[0091] The operation 286 is performed to inject feedstock F into the mold system 108. For example, the injection unit 104 can inject molten feedstock F through the barrel assembly 116 into the mold system 108.

[0092] The operation 288 is performed to initiate opening of the mold system from the closed position. For example, the mold system 108 can be opened when the movable platen 134 of the clamping unit 106 moves away from the stationary platen 132.

[0093] The operation 290 is performed to retract the curved pin 192. For example, the curved pin 192 can be retracted by the pin actuator 194. In some examples, operation 288 and operation 290 can occur simultaneously. In other examples, operation 290 can occur before operation 288.

[0094] FIG. 12 is a flow chart illustrating an example method of manufacturing a molded piece. In this example, the method 300 includes operations 302, 304, 306, 308, 310, 312, and 314. Other embodiments can include more, fewer, or different operations than the example illustrated in FIG. 12.

[0095] The operation 302 is performed to initiate closing of the mold system 108 from an open position. An example of operation 302 is illustrated and described in further detail with reference to FIG. 13.

[0096] The operation 304 is performed to advance the pin actuator 194. In some embodiments, the pin actuator 194 can be advanced in response to the retractable pin assembly 112 closing. An example of operation 304 is illustrated and described in further detail with reference to FIG. 13.

[0097] The operation 306 is performed to advance the curved pin 192 into the mold assembly 110. An example of operation 306 is illustrated and described in further detail with reference to FIG. 13.

[0098] The operation 308 is performed to inject molten feedstock F into the mold assembly 110. An example of operation 308 is illustrated and described in further detail with reference to FIG. 14.19582.0015WOU1 | 2025-24008-P-WO

[0099] The operation 310 is performed to initiate opening of the mold system 108 from a closed position. An example of operation 310 is illustrated and described in further detail with reference to FIG. 15.

[0100] The operation 312 is performed to reverse the pin actuator 194. In some embodiments, the pin actuator 194 can be reversed in response to the retractable pin assembly 112 opening. An example of operation 312 is illustrated and described in further detail with reference to FIG. 15.

[0101] The operation 314 is performed to retract the curved pin 192 from the mold assembly 110. An example of operation 314 is illustrated and described in further detail with reference to FIG. 15.

[0102] FIG. 13 is a perspective view illustrating operation 302, initating closing of the mold system 108 from an open position. The mold system 108 includes the mold assembly 110, the retractable pin assembly 112, the curved pin 192, the pin actuator 194, and the rotary actuator 202. Operations 304, advancing the pin actuator 194, and operation 306, advancing the curved pin 192 into the mold assembly 110, are also shown.

[0103] Operation 302 is performed to initiate closing of the mold system 108 from an open position. In some embodiments, the mold system 108 can be closed by the clamping unit 106 as described with reference to FIG. 2. In some embodiments, the closing of mold system 108 initiates the closing of the retractable pin assembly 112 as shown and described in relation to FIGS. 9-10.

[0104] Operation 304 is performed to advance the pin actuator 194. In some embodiments, the pin actuator 194 can be advanced in a first direction in response to the mold system 108 closing. For example, the pin actuator 194 can be advanced laterally toward the mold assembly 110 in response to the mold system 108 closing. In other embodiments, the pin actuator 194 can be advanced toward the mold assembly 110 in response to the retractable pin assembly 112 closing, as shown and described in relation to FIG. 6, for example. In still other examples, the pin actuator 194 can engage with the rotary’ actuator 202. For example, as the pin actuator 194 advances, it can cause the rotary actuator 202 to rotate in a first direction. In some embodiments, as the pin actuator 194 advances, it can cause the rotary actuator 202 to rotate in a first direction, away from the mold assembly 110. As shown in the example depicted in FIG. 13 more than one rotary actuator 202 can be provided.

[0105] Operation 306 is performed to advance the curved pin 192 into the mold assembly 110. In some embodiments, the curved pin 192 advances into the mold19582.0015WOUI | 2025-24008-P-WOassembly 110 in response to the advancement of the pin actuator 194 in a first direction. In other embodiments, the curved pin 192 advances into the mold assembly 110 as the rotary actuator 202 rotates in a first direction. As shown in the example depicted in FIG.13, more than one curved pin 192 can be provided. In some embodiments, the curved pin 192 continues advancing into the mold assembly 110 until it reaches the pin stop guide 204 as described with respect to FIG. 6. In other implementations, the curved pin 192 continues advancing into the mold assembly until the pin actuator 194 stops advancing. In still other implementations, the curved pin 192 continues advancing into the mold assembly until the pin actuator 194 stops engaging with the rotary actuator 202.

[0106] FIG. 14 is a schematic diagram illustrating operation 308, injecting molten feedstock F into the mold system 108. The barrel assembly 116 is also shown.

[0107] Operation 308 is performed to inj ect molten feedstock F into the mold system 108. As described with respect to FIG. 2, the barrel assembly 116 is configured to melt the feedstock F and drive it toward the clamping unit 106. Once the proper volume of molten feedstock F has been supplied to the mold cavity 122 the barrel assembly will stop injecting molten feedstock F into the mold system 108. In some implementations, the mold system 108 will remain closed until the feedstock F has sufficiently solidified. In some examples, air or water can be supplied to the mold system 108 to solidify the feedstock F more efficiently as described with respect to FIG. 7.

[0108] FIG. 15 is a perspective view illustrating operation 310, initating opening of the mold system 108 from a closed position. The mold system 108 includes the mold assembly 110, the retractable pin assembly 112, the curved pin 192, the pin actuator 194, and the rotary actuator 202. Operation 312, reversing the pin actuator 194, and operation 314, retracting the curved pin 192 from the mold assembly 110, are also shown.

[0109] Operation 310 is performed to initiate opening of the mold system 108 from a closed position. In some embodiments, the mold system 108 can be opened by the clamping unit 106 as described with reference to FIG. 2. In some embodiments, the opening of the mold system 108 initiates the opening of the retractable pin assembly 112 as shown and described in relation to FIG. 10.

[0110] Operation 312 is performed to reverse the pin actuator 194. In some embodiments, the pin actuator 194 can be reversed in a second direction in response to the mold system 108 opening. For example, the pin actuator 194 can be reversed laterally away from the mold assembly 110 in response to the mold system 108 opening. In other embodiments, the pin actuator 194 reversed laterally away from the mold assembly 11019582.0015WOU1 | 2025-24008-P-WOin response to the retractable pin assembly 112 opening, as shown and described in relation to FIG. 8, for example. In still other examples, as the pin actuator 194 reverses, it can cause the rotary actuator 202 to rotate in a second direct on. In some embodiments, as the pin actuator 194 reverses, it can cause the rotary actuator 202 to rotate in a second direction, toward the mold assembly 110, as shown and described in relation to FIG. 15.

[0111] Operation 314 is performed to retract the curved pin 192 from the mold assembly 110. In some embodiments, the curved pin 192 retracts from the mold assembly 110 in response to the reversal of the pin actuator 194 in a second direction. In other embodiments, the curved pin 192 retracts from the mold assembly 110 as the rotary actuator 202 rotates in a second direction. In some implementations, the curved pin 192 can retract from the mold assembly until the tip of the curved pin 192 is removed from the mold assembly 110. In other example implementations, the curved pin 192 retracts from the mold assembly in a circular arc, enabling it to leave behind the curved channel 180 in the molded component 102. The removal of the curved pin 192 is further described in relation to FIG. 8.

[0112] FIG. 16 illustrates an example molded component 102 in the mold cavity 122 of the mold assembly 110 after the curved pin 192 has been retracted, but before the molded component 102 has been ejected. The molded component 102 includes the target 162 and the curved channel 180. The pin stop guide 204 is also shown.

[0113] In some implementations, the mold assembly 110 can retain ejection components that lift or eject the molded component 102 as the mold assembly 110 is opened from a closed position. In some embodiments, as the mold system 108 is opened, the molded component 102 is simultaneously ejected from the mold assembly 110.

[0114] In some embodiments, the pin stop guide 204 can ensure that the curved pin 192 reaches a desired position within the mold cavity 122. For example, the pin stop guide 204 can define an interface between the curved channel 180 and the target 162 in the molded component 102. In some implementations, the curved pin 192 will continue advancing into the mold cavity 122 until it hits the pin stop guide 204.

[0115] FIG. 17 illustrates an example molded component 102. The molded component 102 includes the access point 160, the target 162, the obstruction 164, and the curved channel 180. An exterior plane 330 outside of the molded body is also shown.

[0116] The molded component 102 includes an exterior and an interior. In some embodiments, the curved channel 180 can extend at least partially through the interior of the molded body, as indicated by the dashed lines in FIG. 17. In other embodiments, the19582.0015WOU1 | 2025-24008-P-WOcurved channel 180 can extend from the access point 160 to the target 162. In some examples, the access point can be arranged at the exterior side of the molded body adjacent to the exterior plane 330. As shown in FIG. 17, the curved channel 180 extends from the access point 160 to the target 162 along a path that avoids the obstruction 164.

[0117] In some implementations, the molded component 102 can be used in the field of biological testing to form a cartridge with a series of fluidic channels and chambers configured to prepare and process a fluid sample. In certain implementations, the fluid sample must navigate intricate obstacles, including the obstruction 164, to reach the target 162, where it can be measured by a detector. In the example depicted in FIG. 17, the obstruction 164 prevents the design of a fluidic channel that forms a straight path from the access point 160 to the target 162. Thus, the curved channel 180 can guide a fluid sample from the access point 160, navigating around the obstruction 164, ultimately reaching the target 162.

[0118] The present disclosure and claims sometimes utilize the words “first,” “second,” “third.” etc. as labels to particularly identify particular objects. Unless required by the context, such terms are used only as labels and do not require any particular order or arrangement with respect to each other or with respect to other objects.

[0119] The various embodiments described above are provided by way of illustration only and should not be construed to limit the claims attached hereto. Those skilled in the art will readily recognize various modifications and changes that may be made without follo ing the example embodiments and applications illustrated and described herein, and without departing from the true spirit and scope of the following claims.

Claims

19582.0015WOU1 | 2025-24008-P-WOWHAT IS CLAIMED IS:

1. An injection molding machine for manufacturing a molded component, the injection molding machine comprising:an injection unit for supplying molten feedstock;a clamping unit including:a stationary platen;a moveable platen;a mold assembly including:a cavity7side mold portion connected to the stationary platen; and a core side mold portion connected to the movable platen; and a platen actuator configured to move the moveable platen to open and closed positions; anda retractable pin assembly comprising:a curved pin that defines a curved channel within the molded component; anda pin actuator that advances the curved pin into the mold assembly when the movable platen is in a closed position and retracts the curved pin out of the mold assembly when the movable platen is in an open position.

2. The injection molding machine of claim 1, wherein the pin guide assembly further comprises a rotary actuator provided to activate a rotational movement of the curved pin.

3. The injection molding machine of claim 2, wherein the rotary actuator is coupled to the pin actuator such that the rotary actuator rotates in one direction when the movable platen is in a closed position and the rotary actuator rotates in an opposite direction when the movable platen is in an open position.

4. The injection molding machine of any one claims 1-3, wherein the retractable pin assembly further comprises:a stationary portion; anda movable portion.19582.0015WOU1 | 2025-24008-P-WO5. The injection molding machine of claim 4. wherein the retractable pin assembly is in a closed position when the movable portion is adjacent to the stationary portion.

6. The injection molding machine of claim 4, wherein the retractable pin assembly is in an open position when the movable portion is spaced from the stationary portion.

7. The injection molding machine of claim 4. wherein the mold assembly further includes a slide block pin secured to the mold assembly, the slide block pin configured to engage with the movable portion such that the retractable pin assembly is in a closed position when the movable platen is in a closed position.

8. A mold system comprising:a mold assembly;a retractable pin assembly having an extended and a retracted position; and at least one curved pin for defining a channel within the mold assembly, wherein the retractable pin assembly positions the curved pin in an extended position when the retractable pin assembly is closed and positions the curved pin in a retracted position when the retractable pin assembly is opened.

9. The mold system of claim 8, wherein the at least one curved pin includes an actuator interfacing portion, a channel defining portion, and an end point.

10. The mold system of claim 9, wherein the curved pin is in a retracted position when the end point is outside of the mold assembly.

11. The mold system of claim 9, further comprising a rotary actuator that causes the curved pin to extend in a circular arc around a radial point.

12. The mold system of claim 11, wherein the curved pin extends in a circular arc until at least the end point of the curved pin is within the mold assembly.

13. A method of manufacturing a molded component, the method comprising:advancing a curved pin into a mold assembly;19582.0015WOU1 | 2025-24008-P-WOinjecting molten feedstock into the mold assembly around the curved pin; and retracting the curved pin from the mold assembly.

14. The method of claim 13, wherein the curved pin has a channel defining portion that is inserted into the mold, and wherein the channel defining portion has a shape that extends in a circular arc around a radial point.

15. The method of any one of claims 13-14, wherein the method is performed using an injection molding machine comprising a stationary platen and a moveable platen, wherein the moveable platen is moveable to an open position and a closed position.

16. The method of claim 15, wherein the curved pin is in an extended position when the movable platen is in the closed position.

17. The method of claim 15, wherein the curved pin is in a retracted position when the movable platen is in the open position.

18. The method of claim 15, wherein a pin actuator causes the curved pin to advance into the mold assembly when the movable platen is closed.

19. The method of claim 15, wherein a pin actuator causes the curved pin to retract from the mold assembly when the movable platen is opened.

20. A molded component comprising:an exterior;an interior;a target;an access point arranged at the exterior of the molded body; anda curved channel extending at least partially through the interior of the molded body and extending from the access point to the target.19582.0015WOU1 | 2025-24008-P-WO21. The molded component of claim 20, further comprising an obstruction between the access point and the target, wherein the curved channel extends from the access point to the target along a path that avoids the obstruction.

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