Plastic mold

Abstract

The utility model belongs to the technical field of mold equipment, and particularly relates to a plastic mold. The plastic mold comprises a mold body and a plugging block, a shape follow-up water tank is arranged on the back side of the mold body, and a water inlet pipe and a water outlet pipe are arranged at the two ends of the shape follow-up water tank respectively; the shape of the blocking block is matched with the shape of the shape-followed water tank, and the blocking block is detachably blocked at the notch of the shape-followed water tank, so that the blocking surface of the blocking block and the shape-followed water tank jointly define a shape-followed water path. The conformal water tank on the plastic mould can be processed by adopting a numerical control processing center according to the trend of the working surface of the mould body, the processing mode is simple, the processing precision is high, the cost is low, then the plugging block is plugged at the notch of the conformal water tank to form the conformal water path, and cooling water absorbs waste heat on an injection molding part through the conformal water path, so that the cooling efficiency is improved. And the cooling requirement of the injection molding part is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold equipment, and in particular relates to a plastic mold. Background Art

[0002] During injection molding, the cooling of plastic products is mainly completed by the cooling water channel in the mold. However, traditional cooling water channels are manufactured through machining processes such as milling machines. The water channels can only be cylindrical straight holes, which cannot be completely close to the surface of the injection molded part, making the cooling efficiency of the water channels low and the cooling uneven, resulting in a prolonged injection molding cycle and large product deformation.

[0003] With the advancement of technology, 3D printing conformal cooling channels have gradually developed. It can manufacture conformal cooling channels of any shape and any cross-section. By changing the shape and cross-section, the conformal cooling channels can be evenly arranged in the mold, improving the cooling effect and reducing the molding cycle.

[0004] With the continuous improvement of printing technology and the continuous improvement of printing accuracy, 3D printed conformal waterway workpieces are becoming more and more widely used.

[0005] However, 3D printing technology is still a relatively expensive technology. At present, 3D printing technology is mainly used in the research and development of new products in my country. Its manufacturing cost is high and its manufacturing efficiency is low. At the same time, the manufacturing accuracy is still not satisfactory.

[0006] It can be seen that 3D printing cannot completely replace traditional manufacturing at present; in addition, the conformal waterways manufactured by 3D printing technology also have the following limiting factors during use:

[0007] 1. There are certain requirements for the purity of cooling water. Ordinary tap water cannot be used. Using tap water as a cooling medium will cause condensation of sediment on the side walls of the conformal waterway, which will eventually cause the conformal waterway to be blocked;

[0008] 2. Maintenance is troublesome, and it requires special cleaning equipment to remove the sediment on the inner wall of the mold;

[0009] 3. The replacement cost of parts is too high.

[0010] Therefore, the utility model provides a conformable waterway with low production cost and high manufacturing efficiency, which is a technical problem to be solved urgently by technical personnel in this field. Utility Model Content

[0011] In order to solve the above problems existing in the prior art, the utility model provides a plastic mold to solve the technical problems of high manufacturing cost and low manufacturing efficiency of conformal waterways manufactured by 3D printing technology in the prior art.

[0012] The utility model is specifically implemented through the following technical solutions:

[0013] A plastic mold, comprising a mold body and a block;

[0014] A conformal water tank is arranged on the back side of the mold body, and a water inlet pipe and a water outlet pipe are arranged at both ends of the conformal water tank respectively;

[0015] The shape of the blocking block matches the shape of the conformal water tank, and the blocking block can be detachably blocked at the notch of the conformal water tank, so that the blocking surface of the blocking block and the conformal water tank together form a conformal waterway.

[0016] In order to better realize the utility model, further optimization is made in the above structure, steps are arranged on both sides of the conformal water tank, and the blocking block is arranged on the steps.

[0017] In order to better realize the utility model, further optimization is made in the above structure, and a sealing ring is provided at the connection between the blocking block and the conformal water tank.

[0018] In order to better realize the utility model, further optimization is made in the above structure, and the shape of the cross section of any position of the conformal water channel is exactly the same.

[0019] In order to better realize the utility model, further optimization is made in the above structure, and the cross-sectional area of ​​the conformal waterway is equal to the cross-sectional area of ​​the water inlet pipe and the cross-sectional area of ​​the water outlet pipe.

[0020] In order to better realize the utility model, further optimization is made in the above structure, the number of the conformal water channels is multiple, and the multiple conformal water channels are arranged around the axis of the mold body at equal intervals.

[0021] In order to better realize the utility model, further optimization is made in the above structure, and the blocking block is made of metal aluminum.

[0022] A method for setting a conformal waterway, the method comprising the following steps:

[0023] A conformal water tank is provided on the back side of the mold body and the distance between the groove and the working surface of the mold body is matched;

[0024] A blocking block having a shape matching that of the conformable water tank is arranged at the notch of the conformable water tank, so that the blocking surface of the blocking block and the conformable water tank together form a conformable waterway.

[0025] In order to better realize the utility model, the above method is further optimized, and a step is arranged on the side wall of the conformal water tank, and the blocking block is clamped on the step.

[0026] In order to better realize the utility model, the above method is further optimized, and a sealing ring is provided at the connection between the blocking block and the conformal water tank.

[0027] In summary, the utility model has the following technical effects:

[0028] The conformal water trough on the plastic mold can be processed by a CNC machining center according to the direction of the working surface of the mold body. The processing method is simple, with high processing accuracy and low cost, and batch production is possible. Then, a block is sealed at the notch of the conformal water trough to form a conformal water channel, and cooling water is passed through the conformal water channel to absorb the residual heat on the injection molded part to meet the cooling needs of the injection molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a structural schematic diagram of a plastic mold of the utility model;

[0031] Figure 2 It is a top view of a plastic mold of the utility model;

[0032] Figure 3 yes Figure 2 Sectional view in the AA direction;

[0033] Figure 4 It is a partial disassembled diagram of a plastic mold of the utility model.

[0034] Reference numerals:

[0035] 1. Mold body; 11. Conformal sink; 12. Steps;

[0036] 2. Blockage;

[0037] 3. Sealing ring;

[0038] 41. Water inlet pipe; 42. Water outlet pipe. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0040] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] Embodiment 1:

[0043] like Figures 1 to 4 As shown:

[0044] A plastic mold, comprising a mold body 1 and a block 2; wherein:

[0045] A conformal water tank 11 is disposed on the back side of the mold body 1, and a water inlet pipe 41 and a water outlet pipe 42 are disposed at both ends of the conformal water tank 11;

[0046] The shape of the blocking block 2 matches the shape of the conformable water tank 11 , and the blocking block 2 can be detachably sealed at the notch of the conformable water tank 11 , so that the sealing surface of the blocking block 2 and the conformable water tank 11 together form a conformable waterway.

[0047] The conformal water trough 11 on the plastic mold can be processed by a CNC machining center according to the direction of the working surface of the mold body 1. The processing method is simple, with high processing accuracy and low cost. The block 2 is then sealed at the notch of the conformal water trough 11 to form a conformal water channel. The cooling water absorbs the residual heat on the injection molded part through the conformal water channel to meet the cooling needs of the injection molded part.

[0048] It should be noted that the working surface of the mold body 1 mentioned above refers to the molding surface of the mold body 1;

[0049] The conformal water channel can fit the product shape very well, and the cross section of the water channel can be made into any other cross section except circular, so that it has a good cooling effect;

[0050] Existing conformal water channels are all formed based on 3D printing technology. For mold bodies 1 of different shapes, different molds need to be replaced, which further increases the cost.

[0051] The conformable water tank 11 in the present invention can be directly opened by inputting corresponding data and parameters into a CNC machining center without preparing different molds, thereby greatly reducing its production cost.

[0052] Optimally, steps 12 are provided on both sides of the above-mentioned conformal water channel 11, and the block 2 is clamped on the step 12 to ensure the structural stability of the conformal water channel so that the area of ​​its cross section will not change, so that the plastic mold is more stable when in use.

[0053] Optimally, a sealing ring 3 is provided at the connection between the blocking block 2 and the conformal water tank 11 , and the sealing ring 3 can effectively seal the connection between the blocking block 2 and the conformal water tank 11 to prevent cooling water from leaking from between the blocking block 2 and the conformal water tank 11 .

[0054] Optimally, the shape of the cross section of the above-mentioned conformal water channel at any position is exactly the same, and the area of ​​the cross section of the above-mentioned conformal water channel is equal to the area of ​​the cross section of the water inlet pipe 41 and the area of ​​the cross section of the water outlet pipe 42;

[0055] The sealing surface of the above-mentioned block 2 is also processed by a CNC machining center so that the direction of the sealing surface of the block 2 is the same as the direction of the conformal water channel 11, so that the shape of the cross-section at any position of the conformal water channel is exactly the same; this setting method can ensure that the cooling water will not be retained, thereby ensuring the cooling effect of the plastic mold.

[0056] Optimally, there are multiple conformal water channels, and the multiple conformal water channels are arranged around the axis of the mold body 1 at equal intervals to further improve the cooling effect of the plastic mold.

[0057] Optimally, the above-mentioned block 2 is made of metal aluminum, which has good thermal conductivity and is low in price. Using it as the block 2 can absorb part of the heat energy in the cooling water and exchange heat with the air on the back side of the mold body 1 to further improve the cooling effect of the plastic mold.

[0058] Embodiment 2:

[0059] like Figures 1 to 4 As shown:

[0060] A method for setting a conformal waterway, the method comprising the following steps:

[0061] A conformal water tank 11 is provided on the back side of the mold body 1 and has a distance matching that of the working surface of the mold body 1;

[0062] A blocking block 2 having a shape matching that of the conformable water tank 11 is arranged at the notch of the conformable water tank 11 , so that the sealing surface of the blocking block 2 and the conformable water tank 11 together form a conformable waterway.

[0063] The method for setting the conformal water channel is relatively simple to process the conformal water channel on the mold body 1, and the processing precision is high and the cost is low; at the same time, the block 2 can be removed from the mold body 1, which is simpler and more convenient during maintenance (cleaning the sediment in the conformal water channel);

[0064] In addition, if the block 2 or one of the parts in the mold body 1 is damaged, only the damaged part needs to be replaced without replacing the entire component, so as to further reduce the use cost of the plastic mold.

[0065] Optimally, a step 12 is provided on the side wall of the above-mentioned conformal water channel 11, and the block 2 is clamped on the step 12 to limit the position of the block 2 and prevent the block 2 from sinking and causing the cross-sectional area of ​​the conformal waterway to decrease.

[0066] Optimally, a sealing ring 3 is provided at the connection between the blocking block 2 and the conformal water tank 11, and the sealing ring 3 can effectively seal the connection between the blocking block 2 and the conformal water tank 11 to prevent cooling water from leaking from the connection between the blocking block 2 and the conformal water tank 11.

[0067] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A plastic mold, characterized in that: It comprises a mold body (1) and a block (2); A conformal water tank (11) is provided on the back side of the mold body (1), and a water inlet pipe (41) and a water outlet pipe (42) are respectively provided at both ends of the conformal water tank (11); The shape of the blocking block (2) matches the shape of the conformable water tank (11), and the blocking block (2) can be detachably sealed at the notch of the conformable water tank (11), so that the sealing surface of the blocking block (2) and the conformable water tank (11) together form a conformable waterway.

2. The plastic mold according to claim 1, characterized in that: Steps (12) are provided on both sides of the conformal water tank (11), and the blocking block (2) is clamped on the steps (12).

3. The plastic mold according to claim 2, characterized in that: A sealing ring (3) is provided at the connection between the blocking block (2) and the conformable water tank (11).

4. The plastic mold according to any one of claims 1 to 3, characterized in that: The shape of the cross section of the conformal waterway at any position is exactly the same.

5. The plastic mold according to claim 4, characterized in that: The cross-sectional area of ​​the conformal waterway is equal to the cross-sectional area of ​​the water inlet pipe (41) and the cross-sectional area of ​​the water outlet pipe (42).

6. The plastic mold according to claim 1, characterized in that: There are multiple conformal water channels, and the multiple conformal water channels are arranged around the axis of the mold body (1) at equal intervals.

7. The plastic mold according to claim 1, characterized in that: The blocking block (2) is made of metal aluminum.

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