Lens barrel mold

Abstract

The invention relates to a lens barrel mold which comprises an upper mold set, the upper mold set comprises an upper mold plate and a plurality of upper mold bushings, a material injection hole is formed in the upper mold plate, the lower end face of the upper mold plate is provided with a product forming structure, the product forming structure comprises a main runner groove and two bushing inlaying holes, the main runner groove is communicated with the material injection hole, and the bushing inlaying holes are communicated with the material injection hole. The lining insert holes are symmetrically formed in the two sides of the second end of the main runner groove and communicate with the main runner groove, the upper die linings are detachably installed in the lining insert holes, an outer runner groove and an inner runner groove are formed in the end face of each upper die lining, the outer side of each outer runner groove communicates with the corresponding main runner groove, and each inner runner groove is located in the inner side of the corresponding outer runner groove and communicates with the corresponding outer runner groove; a plurality of feeding holes are formed in the inner side of each inner runner groove; a plurality of cavities are formed in the upper end surface of the lower module; according to the die, lens cone products of different specifications can be manufactured, the reusability of the die is improved, the flowing uniformity of glue is guaranteed, the consistency of glue openings is effectively improved, and the quality of the lens cone products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lens barrel product production and manufacturing devices, and in particular to a lens barrel mould. Background Art

[0002] The optical lens includes a lens barrel and a lens group installed in the lens barrel. The lens group includes multiple lenses. Light enters from the object side end face of the lens barrel, passes through the lens group, and is incident on the photosensitive chip through the image side end face of the lens barrel, thereby achieving imaging. Usually, the lens barrel is injection molded by a lens barrel molding mold.

[0003] The molding of the lens barrel mold generally adopts the design of an annular flow channel at the end of the flow channel, wherein the inner side of the annular flow channel is designed with multiple glue inlets. The prior art generally adopts an annular single-layer glue inlet method, and the size of the glue inlet on the inner side of the annular flow channel is adapted to the product size. The main channel and the annular flow channel are directly formed on the mold. Since the flow channel specifications are not changeable, one mold can only realize the injection molding of one specification of lens barrel products. When the product specifications need to be changed for production, the mold and flow channel need to be redesigned, which increases the mold R&D investment and production cost investment. In addition, under the single-layer glue inlet method, there are obvious differences in the flow distances from different glue inlets to the main channel, resulting in poor material consistency at each glue inlet, affecting the quality of the lens barrel product. Summary of the invention

[0004] Based on the above description, the present invention provides a lens barrel mold to solve the technical problem in the prior art that the lens barrel mold for producing lens barrel products has a single specification and cannot be reused.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A lens barrel mold, comprising: An upper mold group, which includes an upper mold plate and a plurality of upper mold bushings, wherein an injection hole is formed on the upper mold plate, and the lower end surface of the upper mold plate has at least one group of product molding structures, each group of the product molding structures includes a main flow channel groove and two bushing holes, the main flow channel groove is linear and its first end is connected to the injection hole, the bushing holes are symmetrically arranged on both sides of the second end of the main flow channel groove, and the upper mold bushing is detachably installed on the bushing holes, and an outer flow channel groove and an inner flow channel groove are formed on the end surface of each of the upper mold bushings, the outer flow channel groove and the inner flow channel groove are symmetrical about a first defined plane, the middle part of the outer side of the outer flow channel groove is connected to the main flow channel groove, the inner flow channel groove is located on the inner side of the outer flow channel groove and the outer side of the inner flow channel groove is connected to the outer flow channel groove, the connecting position of the inner flow channel groove and the outer flow channel groove is symmetrical about the first defined plane, and a plurality of feed ports are formed on the inner side of each of the inner flow channel grooves; The lower die set has a plurality of cavities on its upper end surface. When the upper die set and the lower die are assembled, all the feed ports on each upper die bushing are connected to one of the cavities.

[0006] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The lens barrel mold provided by the present application is characterized in that two bushing holes are arranged on both sides of each main flow channel groove, and the upper mold bushing is detachably installed in the bushing holes, and an outer flow channel groove and an inner flow channel groove are arranged on the upper mold bushing, thereby forming a double-layer glue feeding form. Under the premise of uniform bushing hole sizes, the upper mold bushing with inner flow channel grooves of different specifications can be replaced to realize the production of lens barrel products of different specifications, thereby improving the reusability of the mold. The connecting position of the inner flow channel groove and the outer flow channel groove is symmetrical with respect to the first defined plane to ensure the uniformity of the flow of the glue in the inner flow channel groove, effectively improve the consistency of the glue port, and improve the quality of the lens barrel product.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the outer flow channel groove and the inner flow channel groove are both arc-shaped structures, the arc of the outer flow channel groove is coaxially arranged with the arc of the inner flow channel groove, and the outer side of the inner flow channel groove is connected to a position near the end of the outer flow channel groove.

[0009] Furthermore, the inner flow channel groove includes two branch flow channel grooves that are symmetrical about the first definition plane, and the outer middle parts of the branch flow channel grooves are connected to the outer flow channel groove.

[0010] Furthermore, the bushing inlay hole is formed with an outer curved groove that matches the shape of the outer runner groove, the outer curved groove and the outer runner groove are combined to form an outer runner, the middle part of the outer curved groove is connected to the main runner groove, and the inner runner groove alone constitutes an inner runner that is completely located on the upper mold bushing.

[0011] Furthermore, the lower end surface of the upper mold plate has four groups of product forming structures, and the main flow channel grooves corresponding to the four groups of product forming structures are evenly distributed along the circumference of the injection hole, and adjacent main flow channel grooves are perpendicular to each other.

[0012] Furthermore, the upper mold assembly also includes a cut-off insert, a cut-off hole is formed between the two ends of each of the main flow channel grooves, the cut-off insert can be rotatably installed in the cut-off hole, and the lower end surface of the cut-off insert is formed with a guide groove running through both sides thereof, and the cut-off insert is rotated to achieve the connection or cut-off of the corresponding main flow channel groove.

[0013] Furthermore, the lower mold group includes a lower mold plate and multiple slider groups, the lower mold plate is provided with multiple horizontal slide grooves, the slider groups are arranged one by one in the horizontal slide grooves, each slider group includes two sliders movably arranged in the horizontal slide grooves, and the two corresponding sliders can be combined to form the cavity.

[0014] Furthermore, the lens barrel mold also includes a base, which includes a bottom plate, a mold foot and a support plate, the mold foot is arranged at the upper end of the bottom plate, the support plate is fixed on the mold foot, and a vertically arranged guide column is fixed on the edge of the support plate, and the upper mold group and the lower mold group are movably installed on the guide column in sequence from top to bottom.

[0015] Furthermore, the lens barrel mold also includes a mold opening assembly, which includes a driving plate, a push rod and a displacement conversion structure. The driving plate is installed between the base plate and the support plate, the lower end of the push rod is connected to the driving plate, and the upper end of the push rod is connected to the lower template. The displacement conversion structure is installed between the slider and the lower template, so that when the push rod lifts the lower template, the corresponding pair of sliders move away from each other.

[0016] Furthermore, a shock-absorbing pad is connected between the driving plate and the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a lens barrel mold provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the upper module in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the upper template in the embodiment of the present application; Figure 4 A schematic diagram of the structure of the upper mold insert in the embodiment of the present application; Figure 5 This is a schematic diagram of the flow channel structure on the upper mold insert in the embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the intercepting insert in the embodiment of the present application; Figure 7 For this application, Figure 4 Schematic diagram of the rubber material structure of the upper mold insert shown; Figure 8 Another structural schematic diagram of the upper mold insert in the embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of the embodiment of the present application after the upper module is hidden; Fig.10 This is a schematic diagram of the structure of the lower template in the embodiment of the present application; Fig.11This is a schematic diagram of the connection between the displacement conversion structure and the lower module in the embodiment of the present application; Fig.12 It is a schematic diagram of the connection between the end fixing block and the sliding member in the embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0020] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90° or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0021] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0022] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0023] like Figure 1 As shown, the present application provides a lens barrel mold, which includes an upper mold assembly 10 and a lower mold assembly 20.

[0024] Combination Figure 2-5 As shown, the upper mold assembly 10 includes an upper mold plate 11 and a plurality of upper mold bushings 12, an injection hole 11a is formed on the upper mold plate 11, and the lower end surface of the upper mold plate 11 has at least one group of product molding structures 111, each group of product molding structures 111 includes a main flow channel groove 11b and two bushing holes 11c, the main flow channel groove 11b is linear and its first end is connected to the injection hole 11a, and the bushing holes 11c are symmetrically arranged on both sides of the second end of the main flow channel groove 11b. Among them, the upper mold bushing 12 is detachably installed on the bushing hole 11c, and an outer runner groove 12a and an inner runner groove 12b are formed on the end surface of each upper mold bushing 12. The outer runner groove 12a and the inner runner groove 12b are both planar symmetrical structures about the first definition plane a. The outer side of the outer runner groove 12a is connected to the main runner groove 11b at a position corresponding to the first definition plane a, and the inner runner groove 12b is located on the inner side of the outer runner groove 12a and is connected to the outer runner groove 12a. The connecting positions of the inner runner groove 12b and the outer runner groove 12a are symmetrical about the first definition plane a, and a plurality of feed ports 12c are formed on the inner side of each inner runner groove 12b.

[0025] The upper end surface of the lower die set 20 has a plurality of cavities 20a. When the upper die set 10 and the lower die set 20 are closed, all the feed ports 12c on each upper die bushing 12 are connected to one cavity 20a.

[0026] The rubber material injected from the injection hole 11a flows through the main flow channel groove 11b to the bushing holes 11c on both sides. The rubber material first flows into the outer flow channel groove 12a and then flows into the inner flow channel groove 12b through the connecting position of the outer flow channel groove 12a and the inner flow channel groove 12b, and then flows into the mold cavity 20a through the internal feed port 12c of the inner flow channel groove 12b to form the lens barrel product.

[0027] Firstly, in this embodiment, two bushing holes 11c are set on both sides of each main flow channel groove 11b, and the upper mold bushing 12 is detachably installed in the bushing hole 11c, and an outer flow channel groove 12a and an inner flow channel groove 12b are set on the upper mold bushing 12 to form a double-layer glue injection form. Under the premise of uniform size of the bushing holes 11c, the upper mold bushing 12 with inner flow channel grooves 12b of different specifications can be replaced to realize the production of lens barrel products of different specifications, thereby improving the reusability of the mold. The connecting position of the inner flow channel groove 12b and the outer flow channel groove 12a is symmetrical about the first defined plane a to ensure the uniformity of the flow of the material in the inner flow channel groove 12a, effectively improve the consistency of the glue port, and improve the quality of the lens barrel product.

[0028] As a preferred embodiment of the present application, the outer flow channel groove 12a and the inner flow channel groove 12b are both arc-shaped structures, the arc of the outer flow channel groove 12a is coaxially arranged with the arc of the inner flow channel groove 12b, and the outer side of the inner flow channel groove 12b is connected to the position near the end of the outer flow channel groove 12a.

[0029] The structural design of the outer flow channel groove 12a and the inner flow channel groove 12b with an arc structure is not only convenient for the production of the groove, but also convenient for the flow of the rubber to prevent the rubber from encountering corners and causing blockage. It can be understood that the arc design of the outer flow channel groove 12a and the inner flow channel groove 12b is only a preferred embodiment of the present application and does not represent a limitation on its structure. In other embodiments, those skilled in the art may also design it to have an open ellipse or a smooth curve, which will not be elaborated here.

[0030] The bushing hole 11c is formed with an outer curved groove 11d which is matched with the shape of the outer flow channel groove 12a. The outer curved groove 11d and the outer flow channel groove 12a are combined to form an outer flow channel. The middle part of the outer curved groove 11d is connected with the main flow channel groove 11b. The inner flow channel groove 12b alone constitutes an inner flow channel which is completely located on the upper mold bushing 12. In this way, for the structure of lens barrel products of different specifications, it is only necessary to design the size of the inner flow channel groove 12b as needed, and the structure of the outer flow channel groove 12a can be designed as a universal structure, which reduces the design amount of the upper mold bushing 12 and ensures the consistency of the rubber entering the inner flow channel from the outer flow channel, thereby improving product consistency.

[0031] In a preferred embodiment of the present application, the lower end surface of the upper mold plate 11 has four groups of product molding structures 111, and the main flow channel grooves 11b corresponding to the four groups of product molding structures 11 are evenly distributed along the circumference of the injection hole 11a, and adjacent main flow channel grooves 11b are perpendicular to each other, thereby forming a cross-shaped flow channel layout, which can realize a production process of one mold with eight cavities (that is, the mold produces eight lens barrel products at one time).

[0032] The schematic diagram of the structure after the rubber material solidifies according to the embodiment of the present application is as follows: Figure 6 As shown, the rubber column A is the part of the rubber located at the injection hole 11a, the rubber rod B is the part of the rubber located at the main flow channel groove 11b, the outer arc rubber ring C is the part of the rubber located at the outer flow channel, the inner arc rubber ring D is the part of the rubber located at the inner flow channel, and the inner claw E is the part of the rubber located at the rubber inlet 12c.

[0033] It is understandable that the structure of the inner flow channel groove 12b can be an integral type or a split type. Figure 3 In the embodiment, the inner flow channel 12b is a split structure with two arc sections, and the glue inlet 12c is arranged on both arc sections. Figure 7 In the embodiment, the inner flow channel groove 12b is an integral structure, and the glue inlets 12c are evenly distributed along the inner side of the inner flow channel groove 12b.

[0034] The upper mold assembly in this embodiment also includes a cut-off insert 13, and a cut-off hole 11e is formed between the two ends of each main flow channel 11b. The cut-off insert 13 is rotatably installed in the cut-off hole 11e. The lower end surface of the cut-off insert 13 is formed with a guide groove 13a running through both sides thereof. The cut-off insert 13 rotates to achieve the connection or cut-off of the corresponding main flow channel 11b. When products do not need to be produced in part of the cavity 20a, the main flow channel 11b can be cut off by rotating the cut-off insert 13.

[0035] In this embodiment, combined with Figure 8~Figure 12 As shown, the lower mold assembly 20 includes a lower mold plate 21 and a plurality of slider groups 22. The lower mold plate 21 is provided with a plurality of horizontal slide grooves 21a. In the present embodiment, the number of the horizontal slide grooves 21a is 4, and the length directions thereof correspond to the length directions of the four main flow channel grooves 11b respectively. Each main flow channel groove 11b is located directly above the central axis of the corresponding horizontal slide groove 21a. The slider groups 22 are arranged in the horizontal slide grooves 21a one by one. Each slider group 22 includes two sliders 221 movably arranged in the horizontal slide groove 21a. The two corresponding sliders 221 can be combined to form a cavity 20a.

[0036] Preferably, each slider 221 in the present application includes a sliding member 2211 and a tooth plate 2212, wherein the sliding member 2211 is slidably arranged in the horizontal slide groove 21a, and the slider can only slide along the length direction of the horizontal slide groove 21a by means of a limit strip 23 installed on the side of the horizontal slide groove 21a, and the tooth plate 2212 is located on both sides of the upper end surface of the sliding member 2211, and each tooth plate 2212 is formed with a cavity groove on the end surface of the other corresponding slider 221, and the two opposite tooth plates 2212 are close to each other to form a cavity 20a.

[0037] Among them, the lens barrel mold also includes a base 30, the base 30 includes a bottom plate 31, a mold foot 32 and a support plate 33, the mold foot 32 is arranged at the upper end of the bottom plate 31, the support plate 33 is fixed on the mold foot 32, and a vertically arranged guide column is fixed on the edge of the support plate 33, and the upper mold group 10 and the lower mold group 20 are movably installed on the guide column from top to bottom in sequence.

[0038] The lens barrel mold also includes a mold opening component 40, which includes a driving plate 41, a push rod 42 and a displacement conversion structure 43. The driving plate 41 is installed between the base plate 31 and the support plate 33, the lower end of the push rod 42 is connected to the driving plate 41, and the upper end of the push rod 42 is connected to the lower template 21. The displacement conversion structure 43 is installed between the slider 221 and the lower template 21, so that when the push rod 42 lifts the lower template 21, the corresponding pair of sliders 221 move away from each other.

[0039] As an optional embodiment, when the top rod 42 lifts the lower template 21, the corresponding pair of sliders 221 move away from each other in the following manner: The displacement conversion structure 43 includes a lower mold plate 431 and four inclined plane guide groups, and the four inclined plane guide groups correspond to the horizontal slide grooves 21a one by one. Each inclined plane guide group includes two end fixing blocks 432 fixedly arranged on the lower mold plate 431; the four end fixing blocks 432 close to the inner side are all fixed on the side of the fixing column 433 located in the middle of the lower mold plate 431, and the fixing column 433 and all the end fixing blocks 432 pass through the lower mold plate 21 from bottom to top.

[0040] The two corresponding end fixing blocks 432 are respectively located at the two ends of the horizontal slide groove 21a, and the opposite sides of the two end fixing blocks 432 are formed with guiding slopes. A trapezoidal space that is wide at the top and narrow at the bottom is formed between the two opposite guiding slopes. The two sliding members 2211 are respectively slidably connected to the two guiding slopes, wherein the sliding members 2211 and the corresponding end fixing blocks 432 are limited by dovetail grooves, and the sliding members 2211 slide along the guiding slopes on the corresponding end fixing blocks 432. When the push rod 42 pushes the lower template 21, the two sliding blocks 211 that constitute a cavity 20a open to each other, which is convenient for taking out the product.

[0041] In order to enhance the structural strength of the lower template 21 , a lower support plate 23 is fixedly connected to the lower end of the lower template, and correspondingly, an upper support plate 15 is fixedly connected to the upper end of the upper template 11 .

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens barrel mold, characterized in that: include: An upper mold group, which includes an upper mold plate and a plurality of upper mold bushings, wherein an injection hole is formed on the upper mold plate, and the lower end surface of the upper mold plate has at least one group of product molding structures, each group of the product molding structures includes a main flow channel groove and two bushing holes, the main flow channel groove is linear and its first end is connected to the injection hole, the bushing holes are symmetrically arranged on both sides of the second end of the main flow channel groove and connected to the main flow channel groove, the upper mold bushing is detachably installed on the bushing holes, an outer flow channel groove and an inner flow channel groove are formed on the end surface of each of the upper mold bushings, the outer flow channel groove and the inner flow channel groove are both planar symmetrical structures with respect to a first defined plane, the outer flow channel groove is connected to the main flow channel groove at the intersection with the first defined plane, the inner flow channel groove is located on the inner side of the outer flow channel groove and is connected to the outer flow channel groove, the connecting positions of the inner flow channel groove and the outer flow channel groove are symmetrical with respect to the first defined plane, and a plurality of feed ports are formed on the inner side of each of the inner flow channel grooves; The lower die set has a plurality of cavities on its upper end surface. When the upper die set and the lower die are assembled, all the feed ports on each upper die bushing are connected to one of the cavities.

2. The lens barrel mold according to claim 1, characterized in that: The outer flow channel groove and the inner flow channel groove are both arc-shaped structures. The arc of the outer flow channel groove is coaxially arranged with the arc of the inner flow channel groove. The outer side of the inner flow channel groove is connected to the position of the outer flow channel groove near the end.

3. The lens barrel mold according to claim 2, characterized in that: The inner flow channel groove includes two branch flow channel grooves symmetrical about the first definition plane, and the outer middle part of the branch flow channel groove is connected to the outer flow channel groove.

4. The lens barrel mold according to claim 1, characterized in that: The bushing inlay hole is formed with an outer curved groove that matches the shape of the outer runner groove. The outer curved groove and the outer runner groove are combined to form an outer runner. The middle part of the outer curved groove is connected to the main runner groove, and the inner runner groove alone constitutes an inner runner that is completely located on the upper mold bushing.

5. The lens barrel mold according to claim 1, characterized in that: The lower end surface of the upper mold plate has four groups of product forming structures, and the main flow channel grooves corresponding to the four groups of product forming structures are evenly distributed along the circumference of the injection hole, and the adjacent main flow channel grooves are perpendicular to each other.

6. The lens barrel mold according to claim 1, characterized in that: The upper mold assembly also includes a cut-off insert, a cut-off hole is formed between the two ends of each main flow channel, the cut-off insert can be rotatably installed in the cut-off hole, the lower end surface of the cut-off insert is formed with a guide groove running through both sides thereof, and the cut-off insert is rotated to achieve the connection or cut-off of the corresponding main flow channel.

7. The lens barrel mold according to claim 1, characterized in that: The lower mold group includes a lower mold plate and multiple slider groups. The lower mold plate is provided with multiple horizontal slide grooves. The slider groups are arranged in the horizontal slide grooves one by one. Each slider group includes two sliders movably arranged in the horizontal slide grooves. Two corresponding sliders can be combined to form the cavity.

8. The lens barrel mold according to claim 7, characterized in that: The lens barrel mold also includes a base, which includes a bottom plate, a mold foot and a support plate. The mold foot is arranged at the upper end of the bottom plate, and the support plate is fixed on the mold foot. A vertically arranged guide column is fixed on the edge of the support plate, and the upper mold group and the lower mold group are movably installed on the guide column in sequence from top to bottom.

9. The lens barrel mold according to claim 8, characterized in that: The lens barrel mold also includes a mold opening component, which includes a driving plate, a push rod and a displacement conversion structure. The driving plate is installed between the base plate and the support plate, the lower end of the push rod is connected to the driving plate, and the upper end of the push rod is connected to the lower template. The displacement conversion structure is installed between the slider and the lower template, so that when the push rod lifts the lower template, the corresponding pair of sliders move away from each other.

10. The lens barrel mold according to claim 1, characterized in that: A shock-absorbing pad is connected between the driving plate and the bottom plate.

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