ABS plastic measuring cup injection mold

Abstract

The utility model provides an ABS (Acrylonitrile Butadiene Styrene) plastic measuring cup injection mold and belongs to the field of injection molds. The mold comprises a fixed mold plate and a movable mold plate, a measuring cup mold core is arranged on the movable mold plate, a circle of cup opening forming face is arranged at the bottom of the measuring cup mold core, an ejection block is connected into the movable mold plate in a sliding mode, the upper surface of the ejection block extends into the cup opening forming face and serves as a part of the cup opening forming face, and the lower surface of the ejection block is connected with the movable mold plate in a sliding mode. A measuring cup mold core is arranged on the fixed mold plate, a cup handle mold core is further arranged on the movable mold plate, the cup handle mold core is located on one side of the measuring cup mold core, and during mold closing, a forming cavity is formed among the fixed mold plate, the movable mold plate, the measuring cup mold core and the cup handle mold core.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, and particularly relates to an injection mold for an ABS plastic measuring cup. Background Art

[0002] Plastic measuring cup injection molding mold: It is a mold used for the production of plastic measuring cups. It is a tool made of metal materials with a specific shape, used to inject molten plastic material into the mold cavity and form a plastic measuring cup through cooling and solidification. The mold usually consists of two main parts: the mold cavity and the mold core. The shape of the mold cavity determines the external shape of the final plastic measuring cup, while the mold core determines the internal shape of the cup. During the injection molding process, the plastic material is melted through a heating and injection system and then injected into the mold cavity. After cooling, the plastic solidifies and takes the shape of the mold. Then the mold is opened, and the plastic measuring cup is taken out from the mold. The injection molding mold can greatly improve the production efficiency and consistency of plastic measuring cups and has the characteristics of repeated use.

[0003] However, plastic measuring cups are generally used to measure the volume of liquids. Therefore, in order to facilitate viewing the volume, the wall thickness is designed to be relatively thin. And the demolding mechanism of general injection molds adopts the method of ejecting with ejector rods. However, the contact area between the ejector rod and the plastic part is small, which leads to a large ejection force being borne by the part of the plastic part in contact with the ejector rod during the ejection process, easily resulting in wear and breakage of the plastic part during the ejection process.

[0004] For example, a Chinese patent document discloses an injection mold for a plastic cup with an improved pneumatic ejection device [Patent Application No.: CN202122517038.4], which includes an upper template, an upper mold core, a lower mold core, and a lower template arranged in sequence from top to bottom. Among them, the upper mold core is fixedly connected to the upper template, and the lower mold core is fixedly connected to the lower template. An outer cup surface profiling groove with an opening facing down is arranged on the upper mold core, and an inner cup surface profiling block corresponding to the outer cup surface profiling groove is formed on the lower mold core. A gating mechanism is arranged on the upper template, and the gating mechanism penetrates downward to communicate with the outer cup surface profiling groove; when air pressure is introduced into both the first air ejection channel and the second air ejection channel, the first air ejection channel and the second air ejection channel will simultaneously generate a certain degree of air pressure on the air pressure groove. However, the method of pneumatic ejection is not stable enough, easily causing the plastic part to change direction when being ejected and being easily damaged by collision. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above problems and provide an injection mold for an ABS plastic measuring cup.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An injection mold for an ABS plastic measuring cup, comprising a fixed template and a movable template. A measuring cup core is provided on the movable template. A circle of cup mouth forming surfaces is provided at the bottom of the measuring cup core. A ejector block is slidably connected in the movable template. The upper surface of the ejector block extends into the cup mouth forming surface and serves as a part of the cup mouth forming surface. A cup handle core is further provided on the movable template. The cup handle core is located on one side of the measuring cup core. When the mold is closed, a forming cavity is formed between the fixed template, the movable template, the measuring cup core and the cup handle core.

[0008] In the above-mentioned injection mold for an ABS plastic measuring cup, two ejector blocks are slidably connected in the movable template. The two ejector blocks are placed opposite to each other. The two ejector blocks are located on both sides of the measuring cup core and also on both sides of the cup handle core.

[0009] In the above-mentioned injection mold for an ABS plastic measuring cup, a first abutting piece is provided on the cup handle core. The first abutting piece is located on the side of the cup handle core away from the measuring cup core, and the first abutting piece can be in contact with the fixed template.

[0010] In the above-mentioned injection mold for an ABS plastic measuring cup, a positioning block is further provided at the bottom of the cup handle core. Positioning steps are respectively provided on both sides of the positioning block.

[0011] In the above-mentioned injection mold for an ABS plastic measuring cup, the cup handle core is fixedly arranged on the movable template through a plurality of bolts.

[0012] In the above-mentioned injection mold for an ABS plastic measuring cup, a concave area is provided on the side of the movable template close to the fixed template. The measuring cup core and the cup handle core are located in the concave area. A plurality of second abutting pieces are respectively provided on the four side surfaces of the fixed template. The second abutting pieces extend into the concave area and are in contact with the inner wall of the concave area.

[0013] In the above-mentioned injection mold for an ABS plastic measuring cup, at least two ejector rods are connected to the bottom of the ejector block. A sliding hole is provided in the movable template. A guide ring is provided in the sliding hole. The ejector rod slides in the guide ring. An ejector space is provided in the movable template. An ejector plate is movable in the ejector space. The end of the ejector rod is fixedly arranged on the ejector plate. The ejector plate is connected to an external linear drive.

[0014] In the above-mentioned injection mold for an ABS plastic measuring cup, a plurality of cooling water pipes are further provided in the movable template. The cooling water pipes are slidably connected to the ejector plate. Several of the cooling water pipes penetrate into the measuring cup core.

[0015] In the above-mentioned injection mold for an ABS plastic measuring cup, a guiding and positioning column is respectively provided at each of the four end corners of the movable template. A plurality of guiding and positioning sleeves corresponding to the guiding and positioning columns are provided on the fixed template.

[0016] In the above-mentioned injection mold for ABS plastic measuring cups, the first abutting piece is detachably fixed to the cup handle core by bolts, and the second abutting piece is detachably fixed to the fixed template by bolts.

[0017] Compared with the existing technology, the advantages of the present utility model are as follows:

[0018] 1. Compared with the traditional ejection method using a straight ejector rod, the contact area between the ejection block and the plastic part is larger. The larger the contact area, the smaller the ejection force on a single point. On the premise of completing demolding, it is ensured that the plastic part is not damaged by ejection, thereby improving the yield rate.

[0019] 2. There are two ejection blocks placed oppositely. When ejecting the plastic part, the two sides of the plastic part receive the same ejection force, so the plastic part will not tilt during the ejection process. Moreover, the two ejection blocks increase the contact area with the plastic part, further ensuring that the plastic part is not damaged by ejection and improving the yield rate.

[0020] 3. The first abutting piece is used to reduce the wear caused by collision between the cup handle core and the fixed template when they are closed. On the other hand, after the mold is closed, the friction force between it and the fixed template is increased through the first abutting piece, so that it is not easy to be misaligned under high-pressure injection, resulting in insufficient precision of the plastic part. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram;

[0022] Figure 2 is Figure 1 a cross-sectional schematic diagram in one direction of

[0023] Figure 3 is Figure 1 another cross-sectional schematic diagram in

[0024] Figure 4 is the structural schematic diagram of the fixed template;

[0025] Figure 5 is the structural schematic diagram of the moving template;

[0026] Figure 6 is the structural schematic diagram at the lifting space.

[0027] In the figure: moving template 11, measuring cup core 12, cup mouth forming surface 13, ejection block 14, cup handle core 15, forming cavity 16, first abutting piece 17, positioning block 18, positioning step 19, bolt 20, recessed area 21, second abutting piece 22, ejector rod 23, sliding hole 24, guide ring 25, ejection space 26, ejection plate 27, cooling water pipe 28, guiding and positioning column 29, guiding and positioning sleeve 30. Detailed Embodiment

[0028] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The present utility model provides an injection mold for an ABS plastic measuring cup. Figures 1-6 As shown, it includes a fixed template 10 and a movable template 11. A measuring cup core 12 is provided on the movable template 11. A circle of cup mouth forming surface 13 is provided at the bottom of the measuring cup core 12. A ejector block 14 is slidably connected in the movable template 11. The upper surface of the ejector block 14 extends into the cup mouth forming surface 13 and serves as a part of the cup mouth forming surface 13. A cup handle core 15 is further provided on the movable template 11. The cup handle core 15 is located on one side of the measuring cup core 12. When the mold is closed, a molding cavity 16 is formed between the fixed template, the movable template 11, the measuring cup core 12 and the cup handle core 15.

[0030] In this embodiment, when the mold is closed, the movable template 11 approaches the fixed template 10 to close the mold, so that a molding cavity 16 is formed between the fixed template, the movable template 11, the measuring cup core 12 and the cup handle core 15. After the mold closing is completed, the injection liquid is injected into the molding cavity 16 through the fixed template 10. After the injection is completed and the plastic measuring cup plastic part is cooled, the movable template 11 moves away from the fixed template 10. The plastic part adheres to the movable template 11, and a part of it adheres to the ejector block 14. Then the ejector block 14 moves upward and tops at the cup mouth of the plastic part to push the plastic part upward, thus completing the demolding. Compared with the traditional ejection method of a straight ejector rod, the contact area between the ejector block 14 and the plastic part is larger. The larger the contact area, the smaller the ejection force received at a single point. On the premise of completing the demolding, it is ensured that the plastic part is not damaged by the ejection, and the finished product rate is improved.

[0031] Two ejector blocks 14 are slidably connected in the movable template 11. The two ejector blocks 14 are placed opposite to each other. The two ejector blocks 14 are located on both sides of the measuring cup core 12 and also on both sides of the cup handle core 15.

[0032] In this embodiment, there are two ejector blocks 14 placed opposite to each other. When ejecting the plastic part, the plastic part receives the same ejection force on both sides. During the ejection process, the plastic part will not tilt, and the two ejector blocks 14 increase the contact area with the plastic part, further ensuring that the plastic part is not damaged by the ejection and improving the finished product rate.

[0033] A first abutting piece 17 is provided on the cup handle core 15. The first abutting piece 17 is located on the side of the cup handle core 15 away from the measuring cup core 12, and the first abutting piece 17 can be attached to the fixed template 10.

[0034] In this embodiment, the first abutting piece 17 has the ability to deform. The first abutting piece 17 is used to reduce the wear caused by the collision between the cup handle core 15 and the fixed template 10 when the cup handle core 15 and the fixed template 10 are closed. On the other hand, after the mold closing is completed, the friction between it and the fixed template 10 is also increased through the first abutting piece 17, and it is not easy to be misaligned under high-pressure injection molding, resulting in insufficient precision of the plastic part.

[0035] A positioning block 18 is further provided at the bottom of the cup handle core 15, and positioning steps 19 are respectively provided on both sides of the positioning block 18.

[0036] In this embodiment, when the mold is closed, the fixed template 10 will be stuck on the positioning step 19 and stuck to the fixed template 10 in the left-right direction, preventing insufficient precision of the plastic part caused by deviation during high-pressure injection molding.

[0037] The cup handle core 15 is fixedly arranged on the moving template 11 through a plurality of bolts 20.

[0038] In this embodiment, the shape of the cup handle core 15 can be replaced and adjusted according to requirements to meet diversity.

[0039] A concave area 21 is provided on one side of the moving template 11 close to the fixed template 10. The measuring cup core 12 and the cup handle core 15 are located in the concave area 21. A plurality of second abutting pieces 22 are respectively provided on four sides of the fixed template 10, and the second abutting pieces 22 extend into the concave area 21 and are in fit with the inner wall of the concave area 21.

[0040] In this embodiment, when the mold is closed, the fixed template 10 extends into the concave area 21 and abuts against the inner wall of the concave area 21, sticking to the fixed template 10 in the front, back, left, and right directions, preventing insufficient precision of the plastic part caused by deviation under high-pressure injection molding. In addition, the second abutting piece 22 has the ability to deform and is used to reduce the wear caused by the collision when the inner wall of the concave area 21 and the fixed template 10 are closed.

[0041] At least two ejector rods 23 are connected to the bottom of the ejector block 14. A slide hole 24 is provided in the moving template 11, a guide ring 25 is provided in the slide hole 24, the ejector rod 23 slides in the guide ring 25, an ejection space 26 is provided in the moving template 11, an ejector plate 27 is movably arranged in the ejection space 26, the end of the ejector rod 23 is fixedly arranged on the ejector plate 27, and the ejector plate 27 is connected to an external linear driver.

[0042] In this embodiment, during demolding, the external linear drive operates to move the ejector plate 27 in the direction close to the fixed mold plate 10, so that the ejector block 14 moves upward through the ejector rod 23 to eject the plastic part. The guide ring 25 is used to stabilize the movement of the ejector rod 23, preventing vibrations caused by friction between the ejector rod 23 and the sliding hole 24 from causing the ejector block 14 to vibrate, and preventing the plastic part from being damaged due to vibrations.

[0043] A number of cooling water pipes 28 are further provided in the moving mold plate 11. The cooling water pipes 28 are slidably connected to the ejector plate 27, and several of the cooling water pipes 28 penetrate into the measuring cup core 12.

[0044] In this embodiment, the cooling water pipes 28 are used to accelerate the cooling rate of the plastic part.

[0045] A guiding and positioning post 29 is respectively provided at each of the four end corners of the moving mold plate 11, and a number of guiding and positioning sleeves 30 corresponding to the guiding and positioning posts 29 are provided on the fixed mold plate 10.

[0046] In this embodiment, during mold closing, the guiding and positioning post 29 will extend into the guiding and positioning sleeve 30 for positioning. If the positions are not aligned, the guiding and positioning post 29 and the guiding and positioning sleeve 30 will collide, rather than the main bodies of the fixed mold plate 10 and the moving mold plate 11 colliding, which plays a protective role.

[0047] The first abutting piece 17 is detachably fixed to the cup handle core 15 by bolts, and the second abutting piece 22 is detachably fixed to the fixed mold plate 10 by bolts.

[0048] In this embodiment, the first abutting piece 17 and the second abutting piece 22 will wear out after long-term use and can be replaced by bolts.

[0049] The working principle of the present utility model is as follows: During mold closing, the moving mold plate 11 approaches the fixed mold plate 10 for mold closing, so that a molding cavity 16 is formed between the fixed mold plate, the moving mold plate 11, the measuring cup core 12 and the cup handle core 15. After mold closing is completed, the injection liquid is injected into the molding cavity 16 through the fixed mold plate 10. After injection is completed and the plastic measuring cup part is cooled, the external linear drive operates to move the ejector plate 27 in the direction close to the fixed mold plate 10, so that the ejector block 14 moves upward through the ejector rod 23 to eject the plastic part, thus completing demolding.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0051] Although this text uses the fixed template 10, movable template 11, measuring cup core 12, cup mouth forming surface 13, ejector block 14, cup handle core 15, forming cavity 16, first abutting piece 17, positioning block 18, positioning step 19, bolt 20, recessed area 21, second abutting piece 22, ejector rod 23, sliding hole 24, guide ring 25, ejection space 26, ejector plate 27, cooling water pipe 28, guiding and positioning column 29, guiding and positioning sleeve 30, etc. more frequently, the use of these terms is only for more convenient description and explanation of the essence of the present utility model; interpreting them as any kind of additional limitation is contrary to the spirit of the present utility model.

Claims

1. An injection mold for an ABS plastic measuring cup, comprising a fixed template (10) and a movable template (11), characterized in that, A measuring cup core (12) is provided on the moving template (11). A cup mouth forming surface (13) is provided at the bottom of the measuring cup core (12). A ejector block (14) is slidably connected in the moving template (11). The upper surface of the ejector block (14) extends into the cup mouth forming surface (13) and serves as a part of the cup mouth forming surface (13). A cup handle core (15) is also provided on the moving template (11). The cup handle core (15) is located on one side of the measuring cup core (12). When the mold is closed, a molding cavity (16) is formed between the fixed template, the moving template (11), the measuring cup core (12) and the cup handle core (15).

2. The injection mold for ABS plastic measuring cups according to claim 1, wherein Two ejector blocks (14) are slidably connected in the moving template (11). The two ejector blocks (14) are placed opposite to each other. The two ejector blocks (14) are located on both sides of the measuring cup core (12) and also on both sides of the cup handle core (15).

3. The injection mold for ABS plastic measuring cups according to claim 1, characterized in that, A first abutting piece (17) is provided on the cup handle core (15). The first abutting piece (17) is located on the side of the cup handle core (15) away from the measuring cup core (12), and the first abutting piece (17) can be in contact with the fixed template (10).

4. The injection mold for ABS plastic measuring cups according to claim 3, characterized in that, A positioning block (18) is further provided at the bottom of the cup handle core (15). Positioning steps (19) are provided on both sides of the positioning block (18).

5. The injection mold for ABS plastic measuring cups according to claim 1, characterized in that, The cup handle core (15) is fixedly arranged on the moving template (11) through a plurality of bolts (20).

6. The injection mold for ABS plastic measuring cups according to claim 3, wherein A recessed area (21) is provided on the side of the moving template (11) close to the fixed template (10). The measuring cup core (12) and the cup handle core (15) are located in the recessed area (21). A plurality of second abutting pieces (22) are provided on the four side surfaces of the fixed template (10). The second abutting pieces (22) extend into the recessed area (21) and are in contact with the inner wall of the recessed area (21).

7. The injection mold for an ABS plastic measuring cup according to claim 1, characterized in that, At least two ejector rods (23) are connected to the bottom of the ejector block (14). A sliding hole (24) is provided in the moving template (11). A guide ring (25) is provided in the sliding hole (24). The ejector rods (23) slide in the guide ring (25). An ejection space (26) is provided in the moving template (11). An ejector plate (27) is movable in the ejection space (26). The end of the ejector rod (23) is fixedly arranged on the ejector plate (27). The ejector plate (27) is connected to an external linear drive.

8. The injection mold for ABS plastic measuring cups according to claim 7, characterized in that A plurality of cooling water pipes (28) are also provided in the moving template (11). The cooling water pipes (28) are slidably connected to the ejector plate (27). Several of the cooling water pipes (28) penetrate into the measuring cup core (12).

9. The injection mold for ABS plastic measuring cups according to claim 1, characterized in that, A guiding and positioning column (29) is provided at each of the four end corners of the moving template (11). A plurality of guiding and positioning sleeves (30) corresponding to the guiding and positioning columns (29) are provided on the fixed template (10).

10. The injection mold for ABS plastic measuring cups according to claim 6, characterized in that, The first abutting piece (17) is detachably fixed to the cup handle core (15) by bolts. The second abutting pieces (22) are detachably fixed to the fixed template (10) by bolts.

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