Lens mold convenient for batch forming

Abstract

The utility model discloses a lens mold convenient for batch molding, which relates to the technical field of lens mold and injection molding, and comprises a molding bottom plate, a plurality of limiting slots, a mold main body, a mold A, a mold B and an injection molding mechanism, the molding bottom plate is provided with a plurality of limiting slots, the mold main body is connected in the limiting slots in a sliding manner, and the mold main body comprises the mold A and the mold B; the mold A and the mold B can be completely attached, an injection molding liquid opening is formed in the middle of the mold A and the mold B, a plurality of molding cavities are formed in the mold A, the molding cavities are communicated through injection molding liquid channels, a one-way valve is installed at the injection molding liquid channel of each molding cavity, lubricating channels are evenly formed in the inner bottoms of the molding cavities, and ejector rods are connected into the lubricating channels in a sliding mode. After the mold A and the mold B are closed, the mold A and the mold B are pushed inwards along the positions of the limiting slots, and a plurality of mold main bodies can be placed in the limiting slots, so that the batch injection molding efficiency can be improved, and a plurality of groups of mold main bodies can be simultaneously subjected to injection molding.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lens mold, injection molding technical field, concretely relates to a lens mold convenient for batch molding. BACKGROUND

[0002] The lens injection mold is a special mold for manufacturing lenses, and its principle is that after the plastic raw material (usually optical plastic) is heated and melted, the plastic melt is injected into the pre-designed mold cavity through the screw or plunger of the injection molding machine under the pressure, and the plastic melt is cooled and solidified under the shape restriction of the mold cavity to form a lens with the required shape and optical performance.

[0003] The existing lens injection mold cannot be batch injection molded, and is accompanied by a large amount of sticking problem when demolding, for example, the resin lens injection mold disclosed in publication No. CN217495010U, which comprises an upper mold base, a lower mold base, a movable mold, a fixed mold, and a cooling mechanism. An adjusting mechanism is arranged between the upper mold base and the lower mold base, and the adjusting mechanism comprises a first sliding groove, a second sliding groove, a first support, a second support and a second push rod. The first sliding groove and the second sliding groove are arranged on the upper mold base and the lower mold base, and then the upper mold base and the movable mold are downwardly attached to the fixed mold for injection molding. At this time, the second push rod will contact the upper mold base and push the second support to move downward away from the fixed mold, and the first push rod will pass through the first through hole and the second through hole to abut against the lower mold base to drive the first support to move upward away from the movable mold along the first sliding groove. The mold in this scheme cannot solve the sticking problem when demolding.

[0004] Therefore, it is necessary to invent a lens mold convenient for batch molding to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a lens mold convenient for batch molding to solve the problem that the lens mold in the prior art cannot be batched and sticks when demolding.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A lens mold convenient for batch molding, comprising a molding bottom plate, a limiting slot, a mold main body, an A mold, a B mold and an injection mechanism, a plurality of limiting slots are formed on the molding bottom plate, the mold main body is slidably connected in the limiting slot, the mold main body comprises the A mold and the B mold, the A mold and the B mold can be completely attached, and the A mold and the B mold are provided with an injection liquid port at the middle part, a plurality of molding cavities are arranged in the A mold, the injection liquid passages between the plurality of molding cavities are communicated, a one-way valve is installed at the injection liquid passage of each molding cavity, lubrication channels are uniformly formed on the inner bottom of the molding cavity, a top rod is slidably connected in the lubrication channel, and the top rod is a metal rod wrapped with sponge.

[0008] In the above technical solution, the technical effect and advantages provided by the utility model are:

[0009] 1. The utility model discloses a plurality of limit insertion slots are arranged on the A mould and B mould, and the plurality of limit insertion slots can place a plurality of mould main bodies, so that the efficiency of batch injection molding can be improved, and a plurality of mould main bodies can be injection molded at the same time.

[0010] 2. The utility model discloses a plurality of forming cavities in the plurality of mould main bodies are provided with forming brackets, the forming brackets are used to facilitate demolding, and the one-way valve is used to control the backflow of the injection liquid, when the forming bracket in the forming cavity is completely injection molded, the pressure in the injection process will make the ejector rod continuously extend into the lubricating tank, the silicone cross valve is opened, the lubricating liquid is filled in the bottom of the ejector rod and the forming bracket, the forming bracket is demolded from the forming cavity, the adhesion is prevented effectively, and the forming bracket is convenient to reuse. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic diagram of the utility model;

[0012] Figure 2 It is the three-dimensional explosion diagram of the A mould of the utility model;

[0013] Figure 3 It is the three-dimensional structure schematic diagram of the injection liquid port of the utility model;

[0014] Figure 4 It is the three-dimensional explosion diagram of the forming bracket of the utility model;

[0015] Figure 5 It is the partial three-dimensional sectional view of the A mould of the utility model.

[0016] MARKS OF THE DRAWINGS:

[0017] 1, forming bottom plate, 2, limit insertion slot, 3, mould main body, 301, A mould, 302, B mould, 303, injection liquid port, 304, forming cavity, 305, injection liquid channel, 306, one-way valve, 307, lubricating channel, 308, ejector rod, 309, silicone cross valve, 310, lubricating tank, 311, forming bracket, 4, injection mechanism. DETAILED DESCRIPTION

[0018] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be introduced in further detail below in conjunction with the drawings.

[0019] The utility model provides a kind of injection molding device, including A mould and B mould, and the A mould and B mould are connected by injection mechanism. Figures 1-3The illustrated lens mold facilitating batch molding includes a molding base plate 1, a limiting slot 2, a mold main body 3, an A mold 301, a B mold 302, and an injection mechanism 4. The molding base plate 1 is provided with a plurality of limiting slots 2. The limiting slots 2 are slidably connected with the mold main body 3. The mold main body 3 includes the A mold 301 and the B mold 302. The A mold 301 and the B mold 302 can be completely fitted. The middle part of the A mold 301 and the B mold 302 is provided with an injection liquid port 303. The A mold 301 is provided with a plurality of molding cavities 304. The plurality of molding cavities 304 are communicated by an injection liquid channel 305. Each molding cavity 304 is provided with a one-way valve 306 at the injection liquid channel 305. The inner bottom of the molding cavity 304 is uniformly provided with a lubricating channel 307. The lubricating channel 307 is slidably connected with a top rod 308. The top rod 308 is a metal rod wrapped with sponge. The two ends of the top rod 308 are connected between the molding bracket 311 and the lubricating tank 310. The lubricating tank 310 is uniformly provided with a silica gel cross valve 309. The position of the silica gel cross valve 309 corresponds to the position of the plurality of top rods 308.

[0020] When the A mold 301 and the B mold 302 are combined and the injection liquid from the injection mechanism 4 starts to be injected from the injection liquid port 303, the molding bracket 311 will be subjected to extrusion force. When the molding bracket 311 is completely filled with the injection liquid, the force at the bottom of the molding bracket 311 will be increased, the extrusion force will be transmitted to the top rod 308, the silica gel cross valve 309 on the lubricating tank 310 will be opened, the lubricating liquid will fill the bottom of the molding bracket 311, the extrusion force during injection will be converted into the lubricating force on the bottom of the molding bracket 311, the bottom of the molding bracket 311 will be lubricated, and the adhesion will be effectively prevented.

[0021] The size of the molding bracket 311 corresponds to the size of the molding cavity 304. The opposite corners of the molding bracket 311 are fixedly connected with handles. The side surface of the molding bracket 311 is also provided with a hole. The position of the hole corresponds to the position of the injection liquid channel 305, and the size is also the same. The lubricating channel 307 is provided with a spring, and the spring is sleeved on the top rod 308.

[0022] The uniformly distributed lubricating channels 307 at the bottom of the molding bracket 311 can uniformly fill the bottom of the molding bracket 311 with lubricating liquid.

[0023] The length of the limiting slot 2 is greater than the mold main body 3. When the mold main body 3 is completely pushed into the bottom of the limiting slot 2, the position of the injection head of the injection mechanism 4 at the top is aligned. The A mold 301 and the B mold 302 are completely the same structure, and the inner surface of the molding cavity 304 is slightly convex. The convexity of the arc is the same.

[0024] The plurality of limiting slots 2 are used to install a plurality of mold main bodies 3, thereby improving the efficiency of batch injection.

[0025] The utility model discloses working principle:

[0026] Refer to the description attached Figures 1-3 In using the utility model, first idle A mould 301 and B mould 302 in the forming cavity 304 in inside are placed good forming bracket 311, and A mould 301 and B mould 302 are combined to mould, and after combining, place to limiting slot 2, after sliding to position, the injection liquid on injection mechanism 4 starts from injection liquid port 303 to the mould body 3 conveying;

[0027] Refer to the description attached Figures 3-5 In using the utility model, through the combination of A mould 301 and B mould 302, in the process of being injected, injection liquid will follow injection liquid port 303 in turn to the forming bracket 311 in every forming cavity 304 conveying, under the action of check valve 306, injection liquid can only convey forward and will not backflow, then will fill every forming bracket 311 in;

[0028] When every forming bracket 311 is filled, the bottom of forming bracket 311 is extruded, and the force is transmitted to the top rod 308, the silicone cross valve 309 on lubricating tank 310 is opened, lubricating liquid flows to the outer surface of top rod 308, so that the bottom back of whole forming bracket 311 is filled with lubricating liquid, and when demoulding, forming bracket 311 can be taken out from forming cavity 304 easily, and can also play the role of effectively preventing sticking.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lens mold that is easy to mass-produce, characterized in that: The system includes a molding base plate (1), limiting slots (2), a mold body (3), an A mold (301), a B mold (302), and an injection molding mechanism (4). The molding base plate (1) has multiple limiting slots (2), and the mold body (3) is slidably connected within each limiting slot (2). The mold body (3) includes an A mold (301) and a B mold (302). The A mold (301) and the B mold (302) can fit together completely, and an injection molding mechanism is located between the A mold (301) and the B mold (302). The injection port (303) and mold A (301) are provided with multiple molding cavities (304). The multiple molding cavities (304) are connected by injection channels (305). Each molding cavity (304) is equipped with a one-way valve (306) at the injection channel (305). The bottom of the molding cavity (304) is uniformly provided with lubrication channels (307). A push rod (308) is slidably connected in the lubrication channel (307). The push rod (308) is a metal rod wrapped with sponge.

2. The lens mold for easy mass production according to claim 1, characterized in that: The top rod (308) is connected at both ends to the molding bracket (311) and the lubrication tank (310), respectively. Silicone cross valves (309) are evenly installed on the lubrication tank (310), and the positions of the silicone cross valves (309) correspond to the positions of the multiple top rods (308).

3. The lens mold for easy mass production according to claim 2, characterized in that: The dimensions of the molding bracket (311) are adapted to the dimensions of the molding cavity (304), and a handle is fixedly connected to the diagonal of the molding bracket (311).

4. A lens mold for easy mass production according to claim 3, characterized in that: The side of the molding bracket (311) is also provided with holes, the position of which corresponds to the position of the injection liquid channel (305), and the size of the holes is the same.

5. A lens mold for easy mass production according to claim 1, characterized in that: A spring is provided in the lubrication channel (307), and the spring is sleeved on the top rod (308).

6. A lens mold for easy mass production according to claim 1, characterized in that: The length of the limiting slot (2) is greater than that of the mold body (3). When the mold body (3) is fully pushed into the bottom of the limiting slot (2), it is aligned with the injection head of the top injection mechanism (4).

7. A lens mold for easy mass production according to claim 1, characterized in that: The A-mode (301) and B-mode (302) have the same structure.

8. A lens mold for easy mass production according to claim 1, characterized in that: The inner surface of the molding cavity (304) is slightly raised, and the curvature of the raised part is the same.

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