Injection mold for a light guide column of a floor lamp

Abstract

This utility model discloses an injection mold for a floor lamp light guide column, relating to the field of injection mold technology. It includes an upper mold and a matching lower mold. The upper mold has an upper mold core, and the lower mold has a lower mold core. The upper and lower mold cores are joined together to form a mold cavity for molding a product. The top of the upper mold core is fitted with a first molding insert, a second molding insert, and a third molding insert located between the first and second molding inserts. The bottom ends of the first, second, and third molding inserts respectively form a first product contouring portion, a second product contouring portion, and a third product contouring portion that connect to the mold cavity. The top of each upper mold core is provided with an assembly slot for assembling the first, second, and third molding inserts. Overall, this improves the mold's performance and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for a floor lamp light guide column. Background Technology

[0002] In the field of modern lighting equipment manufacturing, floor lamps, as common indoor lighting fixtures, rely heavily on their light guide column components for light transmission and diffusion. The light guide column housing, as a crucial protective and supporting structure for this component, is typically made of plastic and molded using injection molding. For example... Figure 1 As shown, a plastic part for a floor lamp light guide column housing has specific structural design requirements to meet its assembly needs inside the floor lamp and its function of wrapping and positioning the light guide column. Specifically, the plastic part has connection features on the left and right sides for docking with other parts of the floor lamp, and a recessed or protruding product feature in the middle of the plastic part for accommodating and limiting the light guide column. These product features on the left and right sides and in the middle together determine the overall structural precision and performance of the light guide column housing. Therefore, it is necessary to ensure the molding quality of these product features during the injection molding process.

[0003] However, conventional injection molds face numerous challenges in practical applications for the aforementioned floor lamp light guide column housing plastic parts with specific product features on the left and right sides and the center. Conventional injection molds typically employ an integral mold core structure to form the mold cavity required for product molding. That is, by setting integrated upper and lower mold cores on the upper and lower molds respectively, the upper and lower mold cores directly form a complete mold cavity after docking. This type of integral mold core structure presents the following problems when dealing with plastic parts with multiple specific product features: On the one hand, due to the complex structure of the molding areas corresponding to the left and right sides and the middle features of the product within the mold cavity, it is difficult to accurately process these complex molding areas during the manufacturing process of the integral mold core, which easily leads to processing errors. Consequently, the dimensional accuracy of the left and right side connection features and the middle limiting features of the molded plastic part does not meet the design requirements, affecting the assembly and use of the product. On the other hand, when the parts corresponding to the specific features of the product within the mold cavity wear or are damaged during long-term use, the integral mold core structure requires the replacement of the entire upper or lower mold core, which not only increases the maintenance cost of the mold but also prolongs production downtime and reduces production efficiency. Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] An injection mold for a floor lamp light guide column includes an upper mold and a matching lower mold. The upper mold has an upper mold core, and the lower mold has a lower mold core. The upper mold core and the lower mold core are joined together to form a mold cavity for molding the product. The top of the upper mold core is equipped with a first molding insert and a second molding insert arranged opposite to each other, and a third molding insert located between the first molding insert and the second molding insert. The bottom ends of the first molding insert, the second molding insert, and the third molding insert are respectively formed with a first product contouring part, a second product contouring part, and a third product contouring part that are connected to the mold cavity. The top of each of the upper mold cores is provided with an assembly slot for assembling the first molding insert, the second molding insert, and the third molding insert. The first product contouring part, the second product contouring part, and the third product contouring part pass through the corresponding assembly slot to engage with the mold cavity. The top ends of the first molded insert, the second molded insert, and the third molded insert are each formed with abutting portions for abutting the assembly through groove.

[0006] As a further embodiment of this utility model: the upper mold is provided with an installation through groove for assembling the upper mold core, and the top of the upper mold core is connected to an upper top plate, which is in a limiting abutment fit with the abutment part.

[0007] As a further embodiment of this utility model: the assembly through groove includes an assembly through groove body and a stepped groove extending to one side of the assembly through groove body, and the assembly through groove body is connected to the stepped groove. The abutting portion extends along one side of the first molded insert / second molded insert / third molded insert to engage with the stepped groove for limiting.

[0008] As a further embodiment of this utility model: after the abutting part is placed in the stepped groove, a removal gap is left between the stepped groove and the periphery of the abutting part.

[0009] As a further embodiment of this utility model: after the abutting part is placed in the stepped groove, the top surface of the abutting part is flush with the top surface of the upper mold core, and the bottom surface of the upper top plate is in a limiting abutting fit with the top surface of the upper mold core and the top surface of the abutting part.

[0010] As a further embodiment of this utility model: after the abutting part is placed in the stepped groove, the top surface of the abutting part is lower than the top surface of the upper mold core, and the bottom surface of the upper top plate is provided with a limiting protrusion that abuts and cooperates with the abutting part.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This floor lamp light guide injection mold, by assembling first, second, and third molding inserts corresponding to different product features into the upper mold core, allows for precise machining of each molding insert, improving the molding accuracy of product features. When a molding insert is worn or damaged, it only needs to be replaced individually, without replacing the entire mold core, reducing maintenance costs and downtime. Simultaneously, the fit between the assembly slot and the abutment part, the limiting design of the upper plate, and the setting of the removal gap ensure the assembly stability of the molding inserts and facilitate their disassembly and assembly, thus improving the overall mold performance and production efficiency.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural diagram of the product; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is an exploded structural diagram of the present invention; Figure 4 yes Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the upper mold core in this utility model; Figure 6 This is a schematic diagram of the structure of the first molded insert in this utility model; Figure 7 This is a cross-sectional structural diagram of the present invention.

[0015] The reference numerals and names in the figure are as follows: 1. Upper mold; 2. Lower mold; 3. Upper mold core; 4. Lower mold core; 5. Mold cavity; 6. First molding insert; 7. Second molding insert; 8. Third molding insert; 9. First product contouring part; 10. Second product contouring part; 11. Third product contouring part; 12. Abutment part; 13. Mounting through groove; 14. Assembly through groove body; 15. Step groove; 16. Removal gap; 17. Top plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-7 In this embodiment of the present invention, an injection mold for a floor lamp light guide column is mainly used to mold the plastic part of the floor lamp light guide column housing. Its overall structure includes an upper mold 1 and a lower mold 2 that cooperate with each other. The injection molding operation is achieved by the docking of the upper mold 1 and the lower mold 2. The upper mold 1 has an installation groove 13, in which an upper mold core 3 is assembled. The lower mold 2 has a lower mold core 4 fixedly disposed on it. When the upper mold 1 and the lower mold 2 are closed, the upper mold core 3 and the lower mold core 4 can dock with each other to form a mold cavity 5 for molding the product. The shape of the mold cavity 5 is adapted to the shape of the plastic part of the floor lamp light guide column housing to ensure that the molded product meets the design size requirements.

[0018] To meet the molding requirements of specific product features on the left and right sides and in the middle of the floor lamp light guide column housing plastic part, three molding inserts are installed at the top of the upper mold core 3: a first molding insert 6, a second molding insert 7, and a third molding insert 8. The first molding insert 6 and the second molding insert 7 are positioned opposite each other, corresponding to the connecting feature molding areas on the left and right sides of the product, respectively. The third molding insert 8 is located between the first molding insert 6 and the second molding insert 7, corresponding to the limiting feature molding area in the middle of the product. At the bottom of the first molding insert 6, the second molding insert 7, and the third molding insert 8, a first product contouring part 9, a second product contouring part 10, and a third product contouring part 11 are integrally molded, respectively. The shapes of these product contouring parts are consistent with the feature shapes of the corresponding positions on the product, used to form the specific structure of the product within the mold cavity 5.

[0019] To facilitate the assembly of the three molding inserts with the upper mold core 3, three assembly slots are provided at the top of the upper mold core 3. The positions of the three assembly slots correspond one-to-one with the installation positions of the first molding insert 6, the second molding insert 7, and the third molding insert 8, and the dimensions of the assembly slots match the shape of the molding inserts to ensure that the molding inserts can be stably assembled within the assembly slots. After the molding inserts are assembled into the assembly slots, the first product contouring part 9, the second product contouring part 10, and the third product contouring part 11 at their bottom ends pass through the corresponding assembly slots, extend into the mold cavity 5, and mate with the inner wall of the mold cavity 5, thereby precisely forming the feature structure required by the product.

[0020] At the top of the first molding insert 6, the second molding insert 7, and the third molding insert 8, abutment portions 12 are respectively formed. The abutment portions 12 are used to form a limiting abutment with the top of the assembly channel to prevent the molding insert from shifting downward due to pressure during injection molding. Specifically, the assembly channel includes an assembly channel body 14 and a stepped groove 15 extending to one side of the assembly channel body 14. The assembly channel body 14 and the stepped groove 15 are connected to form a stepped structure. Correspondingly, the abutment portions 12 extend along one side of the first molding insert 6, the second molding insert 7, or the third molding insert 8, and their shape is adapted to the shape of the stepped groove 15. When the molding insert is assembled into the assembly channel, the abutment portions 12 are precisely embedded in the stepped groove 15, forming a limiting abutment fit with the inner wall of the stepped groove 15, further improving the stability of the molding insert assembly.

[0021] Meanwhile, after the abutment part 12 is placed in the stepped groove 15, a removal gap 16 is left between the stepped groove 15 and the periphery of the abutment part 12. The setting of the removal gap 16 facilitates the removal of the molded insert from the assembly slot by inserting a tool into the gap when it is necessary to replace or maintain the molded insert, reducing the difficulty of operation. Regarding the positional relationship between the abutment part 12 and the top surface of the upper mold core 3, there are two different setting methods: the first method is that after the abutment part 12 is placed in the stepped groove 15, the top surface of the abutment part 12 is flush with the top surface of the upper mold core 3; the second method is that after the abutment part 12 is placed in the stepped groove 15, the top surface of the abutment part 12 is lower than the top surface of the upper mold core 3.

[0022] To further limit and fix the molded insert, an upper top plate 17 is connected to the top of the upper mold core 3. The upper top plate 17 covers the top of the upper mold core 3 and forms a limiting abutment fit with the abutment part 12. In response to the two different ways of setting the abutment part 12, the structure of the upper top plate 17 is also adjusted accordingly: when the top surface of the abutment part 12 is flush with the top surface of the upper mold core 3, the bottom surface of the upper top plate 17 is a planar structure, and its bottom surface can simultaneously make full contact with the top surface of the upper mold core 3 and the top surface of the abutment part 12 to form a limiting abutment, ensuring the limiting effect of the upper top plate 17 on the molded insert; when the top surface of the abutment part 12 is lower than the top surface of the upper mold core 3, a limiting protrusion is formed on the bottom surface of the upper top plate 17, and the height of the limiting protrusion is adapted to the height difference between the top surface of the abutment part 12 and the top surface of the upper mold core 3, so that after the upper top plate 17 is installed, the limiting protrusion can just abut with the top surface of the abutment part 12, thus achieving effective limiting of the molded insert.

[0023] In summary, this floor lamp light guide injection mold, by assembling the first molding insert 6, the second molding insert 7, and the third molding insert 8 corresponding to different product features into the upper mold core 3, allows for precise machining of each molding insert, improving the molding accuracy of product features. When a molding insert is worn or damaged, it only needs to be replaced individually, without replacing the entire mold core, reducing maintenance costs and downtime. Simultaneously, the fit between the assembly slot and the abutment part 12, the limiting design of the upper top plate 17, and the setting of the removal gap 16 ensure the assembly stability of the molding inserts and facilitate their disassembly and assembly, thus improving the overall mold performance and production efficiency.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An injection mold for a light guide column of a floor lamp, characterized in that, It includes an upper mold and a matching lower mold, the upper mold having an upper mold core and the lower mold having a lower mold core, the upper mold core and the lower mold core being joined together to form a mold cavity for molding products; The top of the upper mold core is equipped with a first molding insert and a second molding insert arranged opposite to each other, and a third molding insert located between the first molding insert and the second molding insert. The bottom ends of the first molding insert, the second molding insert, and the third molding insert are respectively formed with a first product contouring part, a second product contouring part, and a third product contouring part that are connected to the mold cavity. The top of each of the upper mold cores is provided with an assembly slot for assembling the first molding insert, the second molding insert, and the third molding insert. The first product contouring part, the second product contouring part, and the third product contouring part pass through the corresponding assembly slot to engage with the mold cavity. The top ends of the first molded insert, the second molded insert, and the third molded insert are each formed with abutting portions for abutting the assembly through groove.

2. The injection mold for a floor lamp light guide column according to claim 1, characterized in that, The upper mold has an installation slot for assembling the upper mold core, and the top of the upper mold core is connected to an upper top plate, which is in a limiting abutment fit with the abutment part.

3. The injection mold for a floor lamp light guide column according to claim 2, characterized in that, The assembly through groove includes an assembly through groove body and a stepped groove extending to one side of the assembly through groove body, and the assembly through groove body is connected to the stepped groove. The abutting portion extends along one side of the first molded insert / second molded insert / third molded insert to engage with the stepped groove for limiting.

4. The injection mold for a floor lamp light guide column according to claim 3, characterized in that, The abutment part is placed after the stepped groove, and a removal gap is left between the stepped groove and the periphery of the abutment part.

5. The injection mold for a floor lamp light guide column according to claim 3, characterized in that, After the abutment part is placed in the stepped groove, the top surface of the abutment part is flush with the top surface of the upper mold core, and the bottom surface of the upper top plate is in a limiting abutment fit with the top surface of the upper mold core and the top surface of the abutment part.

6. The injection mold for a floor lamp light guide column according to claim 3, characterized in that, After the abutting part is placed in the stepped groove, the top surface of the abutting part is lower than the top surface of the upper mold core, and the bottom surface of the upper top plate is provided with a limiting protrusion that abuts and cooperates with the abutting part.

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