Die for preparing light guide sheet

Abstract

The utility model discloses a mold for preparing a light guide sheet, which comprises a fixed mold assembly, the fixed mold assembly comprises a fixed mold seat, a fixed mold plate and a plunger pusher, a fixed mold insert is arranged below the fixed mold plate, the plunger pusher is embedded in the fixed mold plate, the surface of the fixed mold insert is provided with an upper forming cavity, and the upper forming cavity is communicated with the plunger pusher through a diverter; the movable mold assembly comprises a movable mold base and a movable mold plate, a movable mold insert is arranged on the upper surface of the movable mold plate, a lower forming cavity matched with the upper forming cavity is formed in the surface of the movable mold insert, the upper forming cavity and the lower forming cavity form a pouring cavity, and the plunger pushers communicate with the feeding port. The upper end of the plunger pusher is provided with an adjusting part for adjusting the injection pressure and the injection speed of the plunger pusher, and the fixed mold plate is further provided with a groove body for accommodating the adjusting part. The structure of the fixed mold assembly is optimized, the forming quality of products is improved, the structure of the fixed mold assembly is simple, assembly can be rapidly completed, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of light guide sheet processing technology, and in particular relates to a mold for preparing light guide sheets. Background Technology

[0002] Light guide plate molds are industrial molds used to produce light guide plates, and they play a crucial role in the production process. For example, application number 201410123671.7 discloses a mold for preparing light guide plates, comprising: an upper runner plate; a lower runner plate disposed on the lower surface of the upper runner plate, wherein a hot runner is defined between the lower and upper runner plates; an upper heat insulation plate disposed on the lower surface of the lower runner plate; a first positioning member for positioning the lower runner plate, disposed on the upper surface of the upper heat insulation plate and cooperating with the lower runner plate; an upper mold plate disposed on the lower surface of the upper heat insulation plate; a lower mold plate disposed on the lower surface of the upper mold plate, wherein a cavity communicating with the hot runner is defined between the upper and lower mold plates; a lower heat insulation plate disposed on the lower surface of the lower mold plate; and a bottom plate disposed on the lower surface of the lower heat insulation plate. Therefore, it can be seen that the upper mold structure of this mold is complex, the installation requirements are high, and there is no ejector component below the lower mold plate, making it difficult to remove the molded product. Therefore, a mold with a simple structure that facilitates product removal is needed. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a mold for preparing light guide sheets, which optimizes the structure of the fixed mold assembly and sets an ejection structure, making the structure simple and easy to maintain.

[0004] Specifically, this utility model discloses a mold for preparing a light guide sheet, comprising:

[0005] A fixed mold assembly includes a fixed mold base, a fixed mold plate connected to the fixed mold base, and a plurality of plunger pushers connected to the fixed mold plate. The fixed mold base has a material inlet at its top, and the fixed mold plate has a fixed mold insert at its bottom. The plunger pushers are embedded in the fixed mold plate and placed below the fixed mold base. The surface of the fixed mold insert has an upper forming cavity, and the upper forming cavity is connected to the plunger pushers through a flow divider.

[0006] A moving mold assembly, comprising a moving mold base and a moving mold plate connected to the moving mold base, wherein the upper surface of the moving mold plate is provided with a moving mold insert, and the surface of the moving mold insert is provided with a lower molding cavity that matches the upper molding cavity, the upper molding cavity and the lower molding cavity forming a casting cavity;

[0007] Several of the plunger pushers are connected to the feed port, and the upper end of the plunger pusher has an adjustment part for adjusting the injection pressure and injection speed of the plunger pusher. The fixed template is also provided with a groove for accommodating the adjustment part.

[0008] The plunger material enters the casting cavity through the inlet, distributor, and plunger pusher.

[0009] Furthermore, the distributor is fixed on the fixed mold plate and positioned between the fixed mold base and the plunger pusher.

[0010] Furthermore, the upper and lower surfaces of the distributor are provided with heating tubes arranged around the plunger pusher, and the heating tubes are placed in the heating tank of the distributor.

[0011] Furthermore, the casting cavity includes a product cavity and a diversion cavity. The product cavity is located on both sides of the diversion cavity. The diversion cavity is connected to the discharge port of the plunger pusher, and the product cavity is connected to the diversion cavity through a casting channel.

[0012] Furthermore, the bottom of the fixed template is provided with a guide post, which cooperates with the guide sleeve of the moving template.

[0013] Furthermore, the moving mold assembly also includes a lifting plate, which is disposed between the moving mold base and the moving mold plate. The lifting plate is fixedly connected with a plurality of lifting rods, the movable ends of which pass through the moving mold plate and the moving mold insert and are disposed below the casting cavity.

[0014] Furthermore, the lifting rods are respectively positioned below the diversion cavity and the pouring channel.

[0015] The beneficial effects of this utility model are: the structure of the fixed mold assembly is optimized and an ejection structure is set, the structure is simple and easy to maintain. Attached Figure Description

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

[0017] Figure 1 This is a schematic diagram of a mold used to prepare a light guide sheet;

[0018] Figure 2This is a top view of the mold used to prepare the light guide sheet;

[0019] Figure 3 This is a stepped cross-sectional view of a mold used to prepare a light guide sheet;

[0020] Figure 4 This is a partially enlarged cross-sectional view of the mold used to fabricate the light guide sheet;

[0021] Figure 5 This is a schematic diagram of the interior of a mold used to manufacture light guide sheets;

[0022] Figure 6 This is a schematic diagram of the moving mold used to prepare the light guide sheet;

[0023] Figure 7 This is a partially enlarged view of the moving mold used to prepare the light guide sheet;

[0024] Figure 8 This is a schematic diagram of a mold plunger pusher used to prepare light guide sheets in a fixed mold plate.

[0025] Figure 9 This is a bottom view of the mold template used to prepare the light guide sheet;

[0026] Figure 10 This is a schematic diagram of the injection molding material after it has been formed in the casting cavity;

[0027] Figure 11 This is a schematic diagram of a light guide sheet.

[0028] The reference numerals in the attached drawings are as follows: fixed mold assembly 1, fixed mold base 11, inlet 111, fixed template 12, fixed mold insert 121, upper forming cavity 122, groove 123, plunger pusher 13, adjusting part 131, flow divider 14, heating pipe 141, heating groove 142, moving mold assembly 2, moving mold base 21, moving template 22, moving mold insert 221, lower forming cavity 222, guide sleeve 223, lifting plate 23, lifting rod 24, casting cavity 3, flow divider cavity 31, product cavity 32, casting channel 33. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] like Figure 1-11 As shown, this utility model discloses a mold for preparing a light guide sheet, comprising:

[0031] The fixed mold assembly 1 includes a fixed mold base 11, a fixed mold plate 12 connected to the fixed mold base 11, and a plurality of plunger pushers 13 connected to the fixed mold plate 12. The fixed mold base 11 has a feed port 111 on its upper part, and a fixed mold insert 121 on its lower part. The plunger pushers 13 are embedded in the fixed mold plate 12 and placed below the fixed mold base 11. The surface of the fixed mold insert 121 has an upper forming cavity 122, which is connected to the plunger pushers 13 through a distributor 14.

[0032] The moving mold assembly 2 includes a moving mold base 21 and a moving mold template 22 connected to the moving mold base 21. The upper surface of the moving mold template 22 is provided with a moving mold insert 221. The surface of the moving mold insert 221 is provided with a lower forming cavity 222 that matches the upper forming cavity 122. The upper forming cavity 122 and the lower forming cavity constitute a casting cavity 3.

[0033] Several plunger pushers 13 are connected to the feed inlet 111, and the upper end of the plunger pusher 13 has an adjustment part 131 for adjusting the injection pressure and injection speed of the plunger pusher 13. The fixed template 12 is also provided with a groove 123 for accommodating the adjustment part 131.

[0034] The plunger material enters the casting cavity 3 through the inlet 111, the distributor 14, and the plunger pusher 13.

[0035] A flow divider 14 and a plunger pusher 13 connected to the flow divider 14 are set in the fixed mold assembly 1. The injection material enters the casting cavity 3 evenly through the plunger pusher 13, which improves the molding quality of the product. Moreover, the fixed mold assembly 1 has a simple structure and can be assembled quickly, which improves the assembly efficiency.

[0036] In order to improve the compactness of the mold structure, a cavity is opened on the fixed mold plate 12, and the flow divider 14 is placed in the cavity, so that the flow divider 14 is placed between the fixed mold base 11 and the plunger pusher 13.

[0037] In addition, heating tubes 141 are provided on both the upper and lower surfaces of the distributor 14, arranged around the plunger pusher 13, and the heating tubes 141 are placed in the heating tank 142 of the distributor 14. The arrangement of the heating tubes 141 can keep the injection material in the plunger pusher 13 in a liquid state, avoiding solidification and affecting the molding effect of the product.

[0038] In this invention, the casting cavity 3 includes a product cavity 32 and a distribution cavity 31. The product cavity 32 is located on both sides of the distribution cavity 31. The distribution cavity 31 is connected to the outlet of the plunger pusher 13, and the product cavity 32 is connected to the distribution cavity 31 through the casting channel 33. The injection molding material enters the distribution cavity 31 through the distributor 14 and the plunger pusher 13, and then enters the product cavity 32 through the casting channels 33 on both sides of the distribution cavity 31.

[0039] In some embodiments of this utility model, to facilitate product ejection, the moving mold assembly 2 further includes a lifting plate 23. The lifting plate 23 is disposed between the moving mold base 21 and the moving mold plate 22. A plurality of lifting rods 24 are fixedly connected to the lifting plate 23. The movable ends of the lifting rods 24 pass through the moving mold plate 22 and the moving mold insert 221 and are positioned below the casting cavity 3. The lifting rods 24 are respectively positioned below the diversion cavity 31 and the casting channel 33. In this embodiment, the casting channel 33 and the diversion cavity 31 are thickened to facilitate product ejection. During ejection, the product can be ejected along with the casting channel 33, preventing breakage at the connection between the casting channel 33 and the product.

[0040] In some embodiments of this utility model, the bottom of the fixed template 12 is also provided with a guide post. The guide post cooperates with the guide sleeve 223 of the moving template 22. When the moving mold assembly 2 and the fixed mold assembly 1 are connected, the guide post and the guide sleeve 223 first connect and cooperate, which improves the connection accuracy of the two.

[0041] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A mold for preparing a light guide sheet, characterized by, The application relates to a mold assembly, which comprises a fixed mold assembly (1) and a movable mold assembly (2). The fixed mold assembly (1) comprises a fixed mold base (11), a fixed mold plate (12) connected with the fixed mold base (11) and a plurality of plunger pushers (13) connected with the fixed mold plate (12), the fixed mold base (11) is provided with an inlet (111) at the top, the fixed mold plate (12) is provided with a fixed mold insert (121) at the bottom, the plunger pushers (13) are embedded in the fixed mold plate (12) and arranged below the fixed mold base (11), the surface of the fixed mold insert (121) is provided with an upper forming cavity (122), the upper forming cavity (122) is communicated with the plunger pushers (13) through a flow divider (14). The movable mold assembly (2) comprises a movable mold base (21) and a movable mold plate (22) connected with the movable mold base (21), the upper surface of the movable mold plate (22) is provided with a movable mold insert (221), the surface of the movable mold insert (221) is provided with a lower forming cavity (222) matched with the upper forming cavity (122), the upper forming cavity (122) and the lower forming cavity constitute a pouring cavity (3). The plurality of plunger pushers (13) are communicated with the inlet (111), the upper end of the plunger pushers (13) is provided with an adjusting part (131) for adjusting the injection pressure and the injection speed of the plunger pushers (13), the fixed mold plate (12) is further provided with a groove (123) for accommodating the adjusting part (131). The plunger material enters the pouring cavity (3) through the inlet (111), the flow divider (14) and the plunger pushers (13).

2. The mold for manufacturing a light guide sheet according to claim 1, wherein The flow divider (14) is fixed on the fixed mold plate (12) and arranged between the fixed mold base (11) and the plunger pushers (13).

3. The mold for manufacturing a light guide sheet according to claim 1, wherein The upper surface and the lower surface of the flow divider (14) are both provided with heating pipes (141) arranged around the plunger pushers (13), the heating pipes (141) are arranged in heating grooves (142) of the flow divider (14).

4. The mold for manufacturing a light guide sheet according to claim 1, wherein The pouring cavity (3) comprises product cavities (32) and flow dividing cavities (31), the product cavities (32) are arranged on both sides of the flow dividing cavities (31), the flow dividing cavities (31) are communicated with the discharge ports of the plunger pushers (13), and the product cavities (32) are communicated with the flow dividing cavities (31) through pouring channels (33).

5. The mold for manufacturing a light guide sheet according to claim 1, wherein The bottom of the fixed mold plate (12) is further provided with a guide column matched with a guide sleeve (223) of the movable mold plate (22).

6. The mold for manufacturing a light guide sheet according to claim 4, wherein The movable mold assembly (2) further comprises a jacking plate (23), the jacking plate (23) is arranged between the movable mold base (21) and the movable mold plate (22), a plurality of jacking rods (24) are fixedly connected with the jacking plate (23), the movable ends of the jacking rods (24) penetrate through the movable mold plate (22), the movable mold insert (221) and are arranged below the pouring cavity (3).

7. The mold for manufacturing a light guide sheet according to claim 6, wherein The jacking rods (24) are arranged below the flow dividing cavities (31) and the pouring channels (33) respectively.

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