Segmented super-long light guide strip and mold for preparation

Abstract

The utility model discloses a sectional type super-long light guide strip and preparation mould utensil belongs to injection mold field. A sectional type super-long light guide strip includes at least two light guide strip bodies, the first and last of at least two light guide strip bodies are connected, and the end of every two adjacent light guide strip bodies is connected with the connecting portion, and the connecting portion is detachably connected with the corresponding two light guide strip bodies. A sectional type super-long light guide strip preparation mould utensil, including die core subassembly, die core subassembly includes upper die core and lower die core, the surface of upper die core and lower die core is adjacent and is pasted to form at least two cavities, the shape of different cavities is matched with the shape of corresponding light guide strip body, and the cavity contains molten material to form corresponding light guide strip body, and the surface of upper die core and lower die core is adjacent and is provided with flow channel, and the flow channel is communicated with the outside pouring system, and the flow channel is communicated with the cavity. It can realize the production difficulty and production cost of reducing super-long light guide strip.

Description

Technical Field

[0001] This utility model belongs to the field of injection molds, and more specifically, relates to a segmented ultra-long light guide strip and a mold for its preparation. Background Technology

[0002] A light guide strip has one end touching a light source to illuminate the entire strip, serving both decorative and lighting purposes. It is particularly prevalent in automotive interiors. Automotive light guide strips are used to directionally transmit light, improving the lighting effect during vehicle operation and enhancing the user's visual experience.

[0003] Because some cars are large or long, the light guide strips used to decorate them are also long. In existing light guide strip manufacturing processes, the light guide strips are often integrally molded. However, due to the length of the light guide strips, the injection molds used to produce them are large, resulting in high production costs. The injection molds also occupy a large space in the production workshop, placing high demands on the space and dimensions of the workshop and increasing the environmental requirements for light guide strip production. Furthermore, the long length of the light guide strip requires sufficient injection pressure to ensure even distribution of its various parts, making injection molding more difficult. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a segmented ultra-long light guide strip and a mold for its preparation, which can reduce the production difficulty and production cost of ultra-long light guide strips.

[0005] This utility model discloses a segmented ultra-long light guide strip, wherein the light guide strip body is long and strip-shaped, and at least two light guide strip bodies are connected end to end, and a connecting part is connected between the close ends of each pair of adjacent light guide strip bodies; the connecting part is detachably connected to the corresponding two light guide strip bodies; when the connecting part is connected to both corresponding two light guide strip bodies, the two light guide strip bodies are fixedly connected.

[0006] The present invention discloses a mold for preparing a segmented ultra-long light guide strip, comprising a mold core assembly, which includes an upper mold core and a lower mold core; adjacent surfaces of the upper mold core and the lower mold core are fitted together to form at least two cavities; the shapes of different cavities match the shapes of the corresponding light guide strip bodies, and the cavities contain molten material to form the corresponding light guide strip bodies; at least one surface of the upper mold core and the lower mold core that is close to each other is provided with a flow channel, which is connected to an external gating system and to the cavity.

[0007] As a further improvement of this utility model, the number of cavities is greater than two, and the number of cavities is even; each pair of cavities forms a group, and each group of cavities is set independently and does not interfere with each other; the number of flow channels is equal to the number of groups of cavities, and each flow channel is set between a corresponding group of cavities; each flow channel includes one input end and two output ends, and both output ends are connected to the input end; the input end is used to connect to an external gating system; the two output ends are respectively connected to the cavities on both sides of the flow channel.

[0008] As a further improvement of this utility model, the flow channel is U-shaped and includes two connecting flow channels and one casting flow channel. The casting flow channel is arranged perpendicular to the length direction of the cavity. A casting port is provided on the casting flow channel, which passes through the upper and lower sides of the lower mold core and is used to connect with the external gating system. The two connecting flow channels are respectively arranged on the left and right sides of the casting flow channel, and each connecting flow channel is provided with a gate between it and the corresponding cavity so that each connecting flow channel is connected to the corresponding cavity.

[0009] As a further improvement of this utility model, multiple sets of air channels are provided on the lower surface of the upper mold core. The number of air channels is equal to the number of cavities, so that one set of air channels corresponds to one cavity. Each set of air channels is located on the outer periphery of the corresponding cavity, and the air channels are recesses on the lower surface of the upper mold core.

[0010] As a further improvement of this utility model, multiple limiting grooves are provided on the lower surface of the upper mold core, and the multiple limiting grooves are arranged around the edge of the upper mold core; multiple limiting blocks are provided on the upper surface of the lower mold core, and the multiple limiting blocks are arranged around the edge of the lower mold core; the number of limiting blocks is equal to the number of limiting grooves, the position of the limiting blocks corresponds to the position of the limiting grooves, and the size of the limiting blocks matches the size of the limiting grooves, so as to make the upper mold core and the lower mold core engage.

[0011] As a further improvement of this utility model, multiple upper cooling ports are provided on the upper surface of the upper mold core, and the multiple upper cooling ports are provided on the upper surface of the upper mold core and communicate with the interior of the upper mold core.

[0012] As a further improvement of this utility model, a plurality of lower cooling grooves are provided on the upper surface of the lower mold core, each of which is a groove on the upper surface of the lower mold core; a lower cooling port is provided in each lower cooling groove, and the lower cooling port penetrates through the upper and lower surfaces of the lower mold core. It also includes a fixed mold unit; the fixed mold unit is located on the lower side of the mold core assembly, and the external gating system is located inside the fixed mold unit. The fixed mold unit also includes a lower cooling system; the lower cooling system includes multiple lower cooling pipes, each of which has the ability to cool down; the number of lower cooling pipes is the same as the number of lower cooling ports, and the lower cooling pipes pass through the lower cooling ports to enter between the upper mold core and the lower mold core.

[0013] As a further improvement of this utility model, the upper surface of the upper mold core is provided with ejector connection holes, the number of ejector connection holes is equal to the number of cavities, and each ejector connection hole is set between a corresponding set of cavities; each ejector connection hole penetrates the upper and lower surfaces of the upper mold core.

[0014] As a further improvement of this utility model, it also includes a moving mold unit, which is disposed on the upper side of the mold core assembly, and the moving mold unit includes an ejection structure; The number of ejector structures is equal to the number of ejector connection holes, so that one ejector structure corresponds to one ejector connection hole; each ejector structure includes an ejector rod and an ejector end; the ejector rod passes through the corresponding ejector connection hole to enter between the upper mold core and the lower mold core; the ejector end is located at the end of the ejector rod and is located between the upper mold core and the lower mold core; the ejector end is U-shaped, and the middle part of the ejector end is fixedly connected to the end of the ejector rod, so that the two ends of the ejector end are respectively located on both sides of the ejector connection hole; the distance between the two ends of the ejector end is equal to the distance between the cavities on both sides of the corresponding ejector connection hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) Since there are at least two cavities, the injection mold can produce at least two light guide strips at a time. The light guide strips have high production efficiency and fast production speed, which reduces time costs. (2) The staff will connect at least two light guides with a hinge or snap-fit ​​structure to realize the production of ultra-long light guides. This avoids the high production cost and large workshop space caused by the large volume of the injection mold in the existing ultra-long light guide integrated molding process. It also avoids the internal unevenness caused by the large injection pressure during the production of ultra-long light guides. The injection molding difficulty is low and the process is simple. (3) The flow channel connects one injection port to two cavities, so that one injection port can simultaneously inject into two cavities, making injection convenient and fast, while reducing injection cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the upper mold core structure of this utility model; Figure 3 This is a schematic diagram of the upper mold core structure of this utility model; Figure 4 This is a schematic diagram of the upper mold core structure of this utility model; Figure 5 This is a schematic diagram of the lower mold core structure of this utility model; Figure 6This is a schematic diagram of the lower mold core structure of this utility model; Figure 7 This is a schematic diagram of the internal structure of the present invention; Figure 8 This is a schematic diagram of the ejection end of the ejection mechanism of this utility model.

[0017] Explanation of the labels in the diagram: 1. Moving model unit 2 fixed mold units 31 Upper mold core, 311 Ejection connection hole, 312 Air passage, 313 Limiting groove, 314 Upper cooling port, 32 Lower mold core, 321 Runner, 322 Sprue, 323 Limiting block, 324 Lower cooling groove, 325 Lower cooling port Type 4 cavity. Detailed Implementation

[0018] Specific Implementation Example 1: Please refer to Figure 1-8 A mold for preparing a segmented ultra-long light guide strip includes a moving mold unit 1, a fixed mold unit 2, and a mold core assembly.

[0019] The mold core assembly is located between the moving mold unit 1 and the fixed mold unit 2. The mold core assembly includes an upper mold core 31 and a lower mold core 32. During injection molding, the lower surface of the upper mold core 31 is attached to the upper surface of the lower mold core 32, and after the upper mold core 31 and the lower mold core 32 are attached together, a cavity 4 is formed. The cavity 4 is a long, narrow cavity used to contain molten material to form a light guide strip. The cavity 4 includes a first cavity and a second cavity. The first cavity is located on one side of the second cavity, and the first cavity and the second cavity are set independently and do not interfere with each other. The number of first cavities is at least one, and the number of second cavities is at least one. In this embodiment, the number of first cavities and second cavities are both two. The two first cavities are symmetrically arranged, and the two second cavities are symmetrically arranged.

[0020] The upper surface of the upper mold core 31 has two ejection connection holes 311, both of which penetrate the upper and lower surfaces of the upper mold core 31. One ejection connection hole 311 is located between two first cavities, and the axis of symmetry of the ejection connection hole 311 is collinear with the axis of symmetry of the two first cavities. The other ejection connection hole 311 is located between two second cavities, and the axis of symmetry of the ejection connection hole 311 is collinear with the axis of symmetry of the two second cavities. Multiple sets of air channels 312 are formed on the lower surface of the upper mold core 31. The number of air channels 312 is equal to the number of cavities 4, so that one set of air channels 312 corresponds to one cavity 4. Each set of air channels 312 is set on the outer periphery of the corresponding cavity 4. The air channel 312 is a recess on the lower surface of the upper mold core 31, so that when the molten material is poured into the cavity 4, the gas in the cavity 4 is discharged from the air channel 312. Multiple limiting grooves 313 are provided on the lower surface of the upper mold core 31. The limiting grooves 313 are recesses on the lower surface of the upper mold core 31, and the multiple limiting grooves 313 are arranged around the edge of the upper mold core 31. Multiple upper cooling ports 314 are provided on the upper surface of the upper mold core 31. The multiple upper cooling ports 314 are provided on the upper surface of the upper mold core 31 and are connected to the interior of the upper mold core 31 so that pipes can enter the interior of the upper mold core 31 through the upper cooling ports 314.

[0021] Multiple flow channels 321 are formed on the upper surface of the lower mold core 32. The number of flow channels 321 is equal to the number of ejection connection holes 311. In this embodiment, there are two flow channels 321, which are arranged left and right, so that each flow channel 321 corresponds to two cavities 4 respectively. Among them, one flow channel 321 is arranged between two first cavities, and the other flow channel 321 is arranged between two second cavities. The axis of symmetry of the flow channel 321 is collinear with the axis of symmetry of the corresponding two first cavities / two second cavities. The flow channel 321 is U-shaped and includes two connecting flow channels and one casting flow channel; The casting channel is set perpendicular to the length direction of the cavity 4; a casting port 322 is provided on the casting channel, and the casting port 322 penetrates the upper and lower sides of the lower mold core 32. The casting port 322 is used to communicate with the outside world so that the molten material from the outside world can enter the channel 321 through the casting port 322. Two connecting channels are respectively set on the left and right sides of the casting channel, so that the two connecting channels correspond to the two cavities 4 corresponding to the channel 321, and both connecting channels are connected to the casting channel, so that the molten material can enter the connecting channel through the casting channel. Each connecting flow channel is provided with a gate between it and the corresponding cavity 4, so that each connecting flow channel is connected to the corresponding cavity 4, and the molten material entering the connecting flow channel enters the cavity 4 through the gate.

[0022] Multiple limiting blocks 323 are provided on the upper surface of the lower mold core 32, and the multiple limiting blocks 323 are arranged around the edge of the lower mold core 32. The number of limiting blocks 323 is equal to the number of limiting grooves 313, the position of the limiting blocks 323 corresponds to the position of the limiting grooves 313, and the size of the limiting blocks 323 matches the size of the limiting grooves 313 so that the limiting blocks 323 can be embedded in the limiting grooves 313 to realize the mating connection between the upper mold core 31 and the lower mold core 32, so that the lower surface of the upper mold core 31 fits against the upper surface of the lower mold core 32.

[0023] Multiple lower cooling grooves 324 are provided on the upper surface of the lower mold core 32, and each lower cooling groove 324 is a groove on the upper surface of the lower mold core 32. Each lower cooling groove 324 has a lower cooling port 325, which penetrates the upper and lower surfaces of the lower mold core 32 so that the pipe can enter the lower cooling groove 324 through the lower cooling port 325 to communicate with the upper mold core 31 and the lower mold core 32.

[0024] The moving mold unit 1 is located on the upper side of the mold core assembly. The moving mold unit 1 includes an ejection structure and an upper cooling system.

[0025] The number of ejector structures is equal to the number of ejector connection holes 311, so that one ejector structure corresponds to one ejector connection hole 311; each ejector structure includes an ejector rod and an ejector end; The ejector rod passes through the corresponding ejector connection hole 311 to enter between the upper mold core 31 and the lower mold core 32; The ejector end is fixedly connected to the end of the ejector rod and is located between the upper mold core 31 and the lower mold core 32. The ejector end is U-shaped, and the middle part of the ejector end is fixedly connected to the end of the ejector rod so that the two ends of the ejector end are respectively located on both sides of the ejector connection hole 311. The distance between the two ends of the ejector end is equal to the distance between the cavities 4 on both sides of the corresponding ejector connection hole 311, so that when the ejector end moves downward, the two ends of the ejector end can eject the object in the corresponding cavity 4.

[0026] The upper cooling system includes multiple upper cooling pipes, which pass through multiple upper cooling ports 314 and enter the interior of the upper mold core 31, so that when the multiple upper cooling pipes are working, they play a cooling role to cool the upper mold core 31.

[0027] The fixed mold unit 2 is located on the lower side of the mold core assembly. The fixed mold unit 2 includes a gating system and a lower cooling system.

[0028] The gating system is used to supply molten material to the mold core assembly. The number of output ends of the gating system is equal to the number of pouring ports 322. In this embodiment, the gating system has two output ends, so that the two output ends of the gating system correspond to the two pouring ports 322 respectively, and the two output ends of the gating system are connected to the two pouring ports 322 respectively, so that the molten material in the gating system enters the mold core assembly through the pouring ports 322.

[0029] The lower cooling system includes multiple lower cooling pipes, which pass through multiple lower cooling ports 325 and enter the interior of the lower mold core 32, so that when the multiple lower cooling pipes are working, they play a cooling role to cool the lower mold core 32.

[0030] Working principle: During injection molding, the lower surface of the upper mold core 31 is in contact with the upper surface of the lower mold core 32. At this time, the gating system supplies molten material into the runner 321 through the gating gate 322. The molten material enters the corresponding cavity 4 through the runner 321 from the gate, filling the space inside the cavity 4. The air inside the cavity 4 is discharged through the air passage 312. After the cavity 4 is filled, the gating system stops injection molding. At this time, the upper and lower cooling systems work to cool the upper mold core 31 and the lower mold core 32, so as to solidify the molten material inside the cavity 4. After solidification, a light guide strip with a length equal to that of the cavity 4 is formed inside the cavity 4. At this time, the upper and lower cooling systems stop working, controlling the upper mold core 31 and the lower mold core 32 to separate. The ejector structure inside the upper mold core 31 works, and the ejector ends control the light guide strip in the corresponding cavity 4 to separate from the cavity 4. At this time, the production of a light guide strip of a certain length is completed. Furthermore, since there are at least two cavities 4, the injection mold can produce at least two light guide strips at a time, resulting in high production efficiency and fast production speed, thus reducing time costs.

[0031] A segmented ultra-long light guide strip is composed of at least one first light guide strip and one second light guide strip connected end to end; the first light guide strip and the second light guide strip are fixedly connected by a connector. The connectors include the front connector, the rear connector, and the hinge.

[0032] The lower end of the front half connector is rotatably connected to the upper end of the rear half connector via a hinge, allowing the front half connector to rotate around the hinge as an axis. Both the front and rear half connectors are made of rigid or plastic materials. The inner sides of both the front and rear half connectors are provided with identical, through-flowing semi-cylindrical grooves, the radius of which is slightly smaller than the radius of the light guide strip. The two semi-cylindrical grooves together form a single cylindrical groove. The front and rear half connectors have a detachable structure.

[0033] During installation, one end of the first light guide strip is embedded in the connector, and one end of the second light guide strip is also embedded in the connector. The first light guide strip and the second light guide strip inside the connector abut together. Rotate the front half or the rear half of the connector until the two semi-cylindrical grooves merge into a cylindrical groove. At this time, the front half and the rear half of the connector are detachably fixed, ensuring that the first light guide strip and the second light guide strip are locked and fixed as one unit.

[0034] Specifically, the detachable structure includes snap-fit ​​protrusions and snap-fit ​​grooves; There are multiple snap-fit ​​protrusions, which are fixedly connected to the upper front side of the front half connector.

[0035] The size and outline of the snap-fit ​​groove are slightly smaller than the size and outline of the snap-fit ​​protrusion. There are multiple snap-fit ​​grooves, which are located on the lower front side of the rear half connector. The positions of the multiple snap-fit ​​grooves match the positions of the multiple snap-fit ​​protrusions so that the snap-fit ​​grooves can snap into the snap-fit ​​protrusions.

[0036] When the front half connector is engaged with the rear half connector via snap-fit ​​protrusions and snap-fit ​​grooves, the front half connector and the rear half connector form a cylindrical shape.

[0037] It should be noted that the size of the first light guide strip matches the size of the first cavity, and the shape of the first light guide strip matches the shape of the first cavity; the size of the second light guide strip matches the size of the second cavity, and the shape of the second light guide strip matches the shape of the second cavity, so that the shape composed of the first cavity and the second cavity is the same as the shape of a segmented ultra-long light guide strip, so that the first cavity and the second cavity can be used for the production of a segmented ultra-long light guide strip.

[0038] Two light guide strips are connected to form an ultra-long light guide strip, which avoids the problems of high production costs and large workshop space occupation caused by the large volume of injection molds in the existing one-piece molding process of ultra-long light guide strips. It also avoids the internal unevenness caused by high injection pressure during the production of ultra-long light guide strips. The injection molding difficulty is low and the process is simple.

[0039] Specific Embodiment Two: Unlike Specific Embodiment One, the first light guide strip includes a first light guide strip body, an upper locking protrusion, a left locking protrusion, and a right locking protrusion. The first light guide strip body is linear. The upper locking protrusion is fixedly connected to the upper side of one end of the first light guide strip body; the left locking protrusion is fixedly connected to the first light guide strip body, and the left locking protrusion is fixedly connected to the left side of the end where the upper locking protrusion is located; the right locking protrusion is fixedly connected to the first light guide strip body, and the right locking protrusion is fixedly connected to the right side of the end where the upper locking protrusion is located. The distance between the left locking protrusion and the nearest end face of the first light guide strip body is equal to the distance between the right locking protrusion and the nearest end face of the first light guide strip body; the distance between the upper locking protrusion and the nearest end face of the first light guide strip body is greater than the distance between the left locking protrusion and the nearest end face of the first light guide strip body.

[0040] Connectors include flexible light guides; The flexible light guide includes a flexible sleeve, an upper connector slot, a left connector slot, a right connector slot, and a flexible optical fiber. The flexible optical fiber is made of a flexible material, and the flexible sleeve is made of an elastic material.

[0041] The inner diameter of the flexible sleeve is equal to or smaller than the outer diameter of the first light guide strip body; The flexible sleeve has an upper locking groove on the upper side of the end near the first light guide strip body. The position and outline of the upper locking groove match the upper locking protrusion so that the upper locking groove and the upper locking protrusion engage when the flexible light guide is sleeved with the first light guide strip. The flexible sleeve has a left locking groove on the left side of the end near the first light guide strip body. The position and outline of the left locking groove match the left locking protrusion so that the left locking groove and the left locking protrusion engage when the flexible light guide is sleeved with the first light guide strip. The flexible sleeve has a right locking groove on the right side of the end near the first light guide strip body. The position and outline of the right locking groove match the right locking protrusion so that the right locking groove and the right locking protrusion engage when the flexible light guide is sleeved with the first light guide strip.

[0042] The length of the flexible optical fiber is shorter than the length of the flexible sheath. The flexible optical fiber is placed inside the flexible sleeve, and the flexible optical fiber does not come into contact with the upper, left, or right connector slots.

[0043] In use, the end of the flexible optical fiber near the upper slot abuts against the body of the first light guide strip; the second light guide strip abuts against the end of the flexible optical fiber away from the upper slot. The abutment point of the flexible optical fiber and the second light guide strip is located inside the flexible sleeve.

[0044] The other end of the flexible sleeve is fitted onto the end of the second light guide strip. Since the flexible sleeve is elastic, the second light guide strip can be connected to the flexible sleeve by elastic force, so that the first light guide strip and the second light guide strip are fixedly connected.

Claims

1. A segmented ultra-long light guide strip, characterized in that: It includes at least two light guide strip bodies; the light guide strip bodies are long and strip-shaped, and at least two light guide strip bodies are connected end to end, and a connecting part is connected between the close ends of each pair of adjacent light guide strip bodies; the connecting part is detachably connected to the corresponding two light guide strip bodies; when the connecting part is connected to the corresponding two light guide strip bodies, the two light guide strip bodies are fixedly connected.

2. A mold for preparing a segmented ultra-long light guide strip, used to prepare a segmented ultra-long light guide strip according to claim 1, characterized in that: The mold core assembly includes an upper mold core (31) and a lower mold core (32); the adjacent surfaces of the upper mold core (31) and the lower mold core (32) are fitted together to form at least two cavities (4); the shapes of different cavities (4) match the shapes of the corresponding light guide strip bodies, and the cavities (4) contain molten material to form the corresponding light guide strip bodies; at least one surface of the upper mold core (31) and the lower mold core (32) that are close to each other is provided with a flow channel (321), the flow channel (321) is connected to an external gating system, and the flow channel (321) is connected to the cavity (4).

3. The mold for preparing a segmented ultra-long light guide strip according to claim 2, characterized in that: The number of cavities (4) is greater than two, and the number of cavities (4) is even; each pair of cavities (4) is a group, and each group of cavities (4) is set independently and does not interfere with each other; the number of flow channels (321) is equal to the number of groups of cavities (4), and each flow channel (321) is set between the corresponding group of cavities (4); each flow channel (321) includes one input end and two output ends, and both output ends are connected to the input end; the input end is used to connect to the external gating system; the two output ends are respectively connected to the cavities (4) on both sides of the flow channel (321).

4. The mold for preparing a segmented ultra-long light guide strip according to claim 3, characterized in that: The runner (321) is U-shaped and includes two connecting runners and one casting runner. The casting runner is set perpendicular to the length direction of the cavity (4). A casting port (322) is provided on the casting runner. The casting port (322) passes through the upper and lower sides of the lower mold core (32) and is used to connect to the external gating system. The two connecting runners are respectively set on the left and right sides of the casting runner. Each connecting runner is provided with a gate between it and the corresponding cavity (4) so ​​that each connecting runner is connected to the corresponding cavity (4).

5. The mold for preparing a segmented ultra-long light guide strip according to claim 2, characterized in that: Multiple air channels (312) are provided on the lower surface of the upper mold core (31). The number of air channels (312) is equal to the number of cavities (4), so that one set of air channels (312) corresponds to one cavity (4). Each set of air channels (312) is located on the outer periphery of the corresponding cavity (4), and the air channel (312) is a recess on the lower surface of the upper mold core (31).

6. The mold for preparing a segmented ultra-long light guide strip according to claim 2, characterized in that: Multiple limiting grooves (313) are provided on the lower surface of the upper mold core (31), and the multiple limiting grooves (313) are arranged around the edge of the upper mold core (31); multiple limiting blocks (323) are provided on the upper surface of the lower mold core (32), and the multiple limiting blocks (323) are arranged around the edge of the lower mold core (32); the number of limiting blocks (323) is equal to the number of limiting grooves (313), the position of the limiting blocks (323) corresponds to the position of the limiting grooves (313), and the size of the limiting blocks (323) matches the size of the limiting grooves (313) so that the upper mold core (31) and the lower mold core (32) are engaged.

7. The mold for preparing a segmented ultra-long light guide strip according to claim 2, characterized in that: Multiple cooling ports (314) are provided on the upper surface of the upper mold core (31). The multiple cooling ports (314) are provided on the upper surface of the upper mold core (31) and are connected to the interior of the upper mold core (31).

8. The mold for preparing a segmented ultra-long light guide strip according to claim 2, characterized in that: Multiple lower cooling grooves (324) are provided on the upper surface of the lower mold core (32), each lower cooling groove (324) is a groove on the upper surface of the lower mold core (32); each lower cooling groove (324) is provided with a lower cooling port (325), and the lower cooling port (325) penetrates the upper and lower surfaces of the lower mold core (32); It also includes a fixed mold unit (2); the fixed mold unit (2) is located on the lower side of the mold core assembly, and the external gating system is located inside the fixed mold unit (2). The fixed mold unit (2) also includes a lower cooling system; the lower cooling system includes multiple lower cooling pipes, each of which has the ability to cool down; the number of lower cooling pipes is the same as the number of lower cooling ports (325), and the lower cooling pipes pass through the lower cooling ports (325) to enter between the upper mold core (31) and the lower mold core (32).

9. The mold for preparing a segmented ultra-long light guide strip according to claim 3, characterized in that: The upper surface of the upper mold core (31) is provided with ejection connection holes (311). The number of ejection connection holes (311) is equal to the number of cavities (4). Each ejection connection hole (311) is located between a corresponding set of cavities (4). Each ejection connection hole (311) penetrates the upper and lower surfaces of the upper mold core (31).

10. The mold for preparing a segmented ultra-long light guide strip according to claim 9, characterized in that: It also includes a moving mold unit (1), which is disposed on the upper side of the mold core assembly, and the moving mold unit (1) includes an ejection structure; The number of ejector structures is equal to the number of ejector connection holes (311), so that one ejector structure corresponds to one ejector connection hole (311); each ejector structure includes an ejector rod and an ejector end; the ejector rod passes through the corresponding ejector connection hole (311) to enter between the upper mold core (31) and the lower mold core (32); the ejector end is located at the end of the ejector rod and is located between the upper mold core (31) and the lower mold core (32); the ejector end is U-shaped, and the middle part of the ejector end is fixedly connected to the end of the ejector rod, so that the two ends of the ejector end are respectively located on both sides of the ejector connection hole (311); the distance between the two ends of the ejector end is equal to the distance between the cavities (4) on both sides of the corresponding ejector connection hole (311).

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