Molding assembly and injection mold

Abstract

The utility model provides a forming assembly and an injection mold. The forming assembly comprises a first mold body and a second mold body, the second mold body is assembled on the first mold body in a sliding manner and is positioned on one side of the first mold body; wherein in the mold closing state, the first mold body is attached to the second mold body, a forming cavity and an exhaust cavity are defined by the first mold body and the second mold body, the forming cavity is formed in the exhaust cavity, and the forming cavity and the exhaust cavity are distributed in a spaced mode; and in the injection molding state, the first mold body and the second mold body are separated under the action of the air pressure and form a gap communicating the forming cavity with the exhaust cavity, and the value range of the thickness of the gap is 0.002 mm-0. 04mm. The rubber material overflowing from the forming cavity can flow into the exhaust cavity through the gap to form burrs, the burrs are connected with the plastic product through the connecting arm, the thickness of the connecting arm is extremely thin, the connecting arm can be broken under slight external force, and therefore the burrs on the plastic product can be easily removed.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a molding component and an injection mold. Background Technology

[0002] When using molds to injection mold product parts, the raw material first enters the main runner, and then flows through each gate to the molding cavity to complete the injection molding.

[0003] In related technologies, for plastic materials with good flowability, plastic products are prone to developing burrs during the molding process. The burrs are irregularly distributed and have irregular shapes (such as needle-like, strip-like, dot-like, etc.). Moreover, the connection between the burrs and the plastic product is relatively thick and has high connection strength, which is not conducive to subsequent removal. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a molding component and an injection mold, which aims to solve the problem of difficult burr removal in injection molded products in related technologies.

[0005] To solve the above-mentioned technical problems, the first aspect of this utility model provides a molding component, comprising:

[0006] First motif; and,

[0007] The second mold body is slidably assembled to the first mold body and located on one side of the first mold body;

[0008] In the mold-closed state, the first mold body and the second mold body are in contact with each other, and the first mold body and the second mold body enclose a molding cavity and an venting cavity. The molding cavity is located in the venting cavity and is spaced apart from the venting cavity. In the injection molding state, the first mold body and the second mold body are separated under the action of air pressure and a gap connecting the molding cavity and the venting cavity is formed. The thickness of the gap is in the range of 0.002mm-0.04mm.

[0009] Optionally, the distance between the molding cavity and the venting cavity is in the range of 0.2mm-0.3mm.

[0010] Optionally, the first mold body is provided with a first mold groove and a first venting groove on the side near the second mold body, the first mold groove being disposed in the first venting groove and distributed at intervals from the first venting groove;

[0011] The second mold body is provided with a second mold groove and a second venting groove on the side near the first mold body. The second mold groove is located inside the second venting groove and is distributed at intervals with the second venting groove.

[0012] When the mold is closed, the first mold body and the second mold body together close the first mold groove and the second mold groove to form the molding cavity, and together close the first vent groove and the second vent groove to form the venting cavity.

[0013] Optionally, multiple first mold slots and multiple first exhaust slots are provided, with multiple first mold slots distributed at intervals and multiple first exhaust slots distributed at intervals, and multiple first mold slots are provided one-to-one in multiple first exhaust slots.

[0014] The second mold groove and the second exhaust groove are provided in multiples, the multiple second mold grooves are distributed at intervals, the multiple second exhaust grooves are distributed at intervals, and the multiple second mold grooves are provided one-to-one in the multiple second exhaust grooves.

[0015] Optionally, the first mold body is further provided with a gate, which is connected to the first mold groove.

[0016] Optionally, the gate includes a first tapered channel and a second tapered channel, the end of the second tapered channel with a relatively larger diameter is connected to the end of the first tapered channel with a relatively smaller diameter, and the second tapered channel is closer to the second mold body than the first tapered channel, and the taper of the second tapered channel is greater than the taper of the first tapered channel.

[0017] Optionally, the first mold body is provided with a first core on the side near the second mold body, and the first core is located in the first mold groove;

[0018] The gate is provided in multiple ways, and the multiple gates are distributed at intervals and arranged around the first core.

[0019] Optionally, the first mold body has a connecting groove on the side away from the second mold body, and the plurality of gates are located in the connecting groove.

[0020] Optionally, the molding assembly further includes a sliding assembly, which is disposed between the first mold body and the second mold body;

[0021] When the mold is closed, the sliding component is held by the first mold body and the second mold body, and the first mold body, the second mold body, and the sliding component together form a molding cavity.

[0022] The second aspect of this utility model provides an injection mold, including a molding component and an injection component as described in any one of the above descriptions, wherein the injection component is disposed on the side of the first mold body away from the second mold body, and the injection component is in communication with the molding cavity.

[0023] Compared with related technologies, the advantages of this molding component and injection mold are as follows: During injection molding, the gap between the first mold body and the second mold body can connect the venting cavity and the molding cavity. The gas in the molding cavity can flow into the venting cavity through the gap to achieve venting, and the overflowing plastic material in the molding cavity can also flow into the venting cavity through the gap to form burrs. The burrs are connected to the plastic product through the connecting arm. The burrs are annular and sleeved on the outside of the plastic product. Since the thickness of the gap is in the range of 0.002mm-0.04mm, the connecting arm between the burrs and the plastic product is extremely thin and can break under slight external force, thereby easily removing the burrs on the plastic product. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the injection mold provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the molding component provided in an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of the molding component provided in this embodiment of the utility model;

[0028] Figure 4 yes Figure 3 Enlarged view of detail A in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of the first mold provided in this embodiment of the present invention;

[0030] Figure 6 yes Figure 5 A magnified view of detail B in the middle;

[0031] Figure 7 This is an assembly diagram of the second mold body and the row assembly provided in this embodiment of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the second phantom provided in this embodiment of the present invention;

[0033] Figure 9 yes Figure 8 A magnified view of detail C.

[0034] In the accompanying drawings, the reference numerals represent: 1, first mold body; 11, first mold groove; 12, first venting groove; 13, first core; 14, connecting groove; 2, second mold body; 21, second mold groove; 22, second venting groove; 3, molding cavity; 4, venting cavity; 5, gate; 51, first tapered channel; 52, second tapered channel; 6, sliding assembly; 61, second core; 10, molding assembly; 20, injection assembly. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0038] Example:

[0039] Please see Figure 1 This utility model provides an injection mold, including a molding component 10 and an injection component 20. The injection component 20 is disposed on one side of the molding component 10 and is used to inject adhesive into the molding component 10.

[0040] Please see Figures 2 to 9The molding component 10 includes a first mold body 1 and a second mold body 2. The second mold body 2 is slidably assembled to the first mold body 1 and located on one side of the first mold body 1. When the mold is closed, the first mold body 1 and the second mold body 2 are in contact with each other, and the first mold body 1 and the second mold body 2 enclose a molding cavity 3 and an exhaust cavity 4. The molding cavity 3 is located in the exhaust cavity 4 and is spaced apart from the exhaust cavity 4. When the molding is in the injection molding state, the first mold body 1 and the second mold body 2 are separated under the action of air pressure and a gap connecting the molding cavity 3 and the exhaust cavity 4 is formed. The thickness of the gap is in the range of 0.002mm-0.04mm.

[0041] During injection molding, the gap between the first mold body 1 and the second mold body 2 can connect the venting chamber 4 and the molding chamber 3. Gas in the molding chamber 3 can flow into the venting chamber 4 through this gap to achieve venting. The overflowing plastic material in the molding chamber 3 can also flow into the venting chamber 4 through this gap to form burrs. The burrs are connected to the plastic product through the connecting arm. The burrs are ring-shaped and fit on the outside of the plastic product. Since the thickness of the gap is in the range of 0.002mm-0.04mm, the connecting arm between the burrs and the plastic product is extremely thin and can break under slight external force, thus making it easy to remove the burrs on the plastic product.

[0042] It should be noted that the injection mold is closed before injection molding. When the mold is closed, the first mold body 1 and the second mold body 2 are pressed together under pressure, and the molding cavity 3 is a sealed cavity. During injection, as the rubber is injected into the molding cavity 3, the air pressure in the molding cavity 3 increases, and the first mold body 1 and the second mold body 2 are slightly separated under the action of air pressure to form a gap.

[0043] Depending on the actual needs, the thickness of the gap can be 0.002mm, 0.004mm, 0.008mm, 0.02mm, 0.04mm, etc.

[0044] In some embodiments, the glue injection assembly 20 is disposed on the side of the first mold body 1 away from the second mold body 2, and the glue injection assembly 20 is connected to the molding cavity 3, so that the glue injection assembly 20 can inject glue into the molding cavity 3.

[0045] The distance between the molding cavity 3 and the venting cavity 4 is between 0.2mm and 0.3mm, which makes the distance between the molding cavity 3 and the venting cavity 4 smaller, that is, the length of the gap is smaller, thus making the burrs and the length of the connecting arm of the plastic product smaller, which makes it easier to remove the burrs.

[0046] Depending on actual needs, the distance between the molding cavity 3 and the venting cavity 4 can be 0.2mm, 0.22mm, 0.24mm, 0.28mm, 0.3mm, etc.

[0047] Please see Figure 4 , Figure 6 and Figure 9 The first mold body 1 has a first mold groove 11 and a first venting groove 12 on the side near the second mold body 2. The first mold groove 11 is located in the first venting groove 12 and is spaced apart from the first venting groove 12. The second mold body 2 has a second mold groove 21 and a second venting groove 22 on the side near the first mold body 1. The second mold groove 21 is located in the second venting groove 22 and is spaced apart from the second venting groove 22. When the mold is closed, the first mold body 1 and the second mold body 2 jointly close the first mold groove 11 and the second mold groove 21 to form a molding cavity 3, and jointly close the first venting groove 12 and the second venting groove 22 to form a venting cavity 4, so that the molding cavity 3 is located in the venting cavity 4, and the molding cavity 3 and the venting cavity 4 are spaced apart.

[0048] According to actual needs, the first venting groove 12 and the second venting groove 22 are both annular. The distance between the first venting groove 12 and the first mold groove 11 is in the range of 0.2mm-0.3mm, and the distance between the second venting groove 22 and the second mold groove 21 is in the range of 0.2mm-0.3mm.

[0049] Please see Figure 5 , Figure 7 and Figure 8 Multiple first mold grooves 11 and multiple first venting grooves 12 are provided, with multiple first mold grooves 11 and multiple first venting grooves 12 being distributed at intervals, and each of the multiple first mold grooves 11 is correspondingly located within the multiple first venting grooves 12; multiple second mold grooves 21 and multiple second venting grooves 22 are provided, with multiple second mold grooves 21 and multiple second venting grooves 22 being distributed at intervals, and each of the multiple second mold grooves 21 is correspondingly located within the multiple second venting grooves 22, so that multiple molding cavities 3 and multiple venting cavities 4 are provided, with the multiple molding cavities 3 and multiple venting cavities 4 being independently arranged, and each of the multiple molding cavities 3 being correspondingly located within the multiple venting cavities 4.

[0050] Please see Figure 2 , Figure 3 and Figure 4 The first mold body 1 is also provided with a gate 5, which is connected to the first mold groove 11. The first mold groove 11 is part of the molding cavity 3, so that the glue injection component 20 can inject glue into the molding cavity 3 through the gate 5.

[0051] According to actual needs, the gate 5 is a long and narrow channel, and the long and narrow channel is a tapered channel. The smaller diameter end of the gate 5 is connected to the first mold groove 11.

[0052] Please see Figure 4In some embodiments, the gate 5 includes a first conical channel 51 and a second conical channel 52. The end of the second conical channel 52 with a relatively larger diameter is connected to the end of the first conical channel 51 with a relatively smaller diameter. The second conical channel 52 is closer to the second mold body 2 than the first conical channel 51. The taper of the second conical channel 52 is greater than that of the first conical channel 51, which can make the flow of the adhesive in the gate 5 smoother.

[0053] Please see Figure 2 , Figure 5 and Figure 6 The first mold body 1 is provided with a first core 13 on the side near the second mold body 2. The first core 13 is located in the first mold groove 11. Multiple gates 5 are provided, which are distributed at intervals and surround the first core 13. This can make the distribution of the rubber material in the molding cavity 3 more uniform. At the same time, it can prevent the first core 13 from blocking the flow of the rubber material in the molding cavity 3 and improve the smoothness of the rubber material flow.

[0054] Please see Figure 2 The first mold body 1 has a connecting groove 14 on the side away from the second mold body 2, and multiple gates 5 are located in the connecting groove 14; the glue injection assembly 20 has a main channel, which is connected to the connecting groove 14, thereby dividing a main channel into multiple gates 5 to realize glue injection through multiple gates 5.

[0055] Depending on actual needs, four gates 5 can be provided, and the four gates 5 are distributed at the four corners of the connecting groove 14.

[0056] Please see Figure 1 , Figure 3 and Figure 7 The molding component 10 also includes a sliding component 6, which is disposed between the first mold body 1 and the second mold body 2. When the mold is closed, the sliding component 6 is held by the first mold body 1 and the second mold body 2. The first mold body 1, the second mold body 2, and the sliding component 6 together form a molding cavity 3. The sliding component 6 is provided with a second core 61, which is located inside the molding cavity 3.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A molding assembly characterized by, include: First motif; as well as, The second mold body is slidably assembled to the first mold body and located on one side of the first mold body; In the mold-closed state, the first mold body and the second mold body are in contact with each other, and the first mold body and the second mold body enclose a molding cavity and an venting cavity. The molding cavity is located in the venting cavity and is spaced apart from the venting cavity. In the injection molding state, the first mold body and the second mold body are separated under the action of air pressure and a gap connecting the molding cavity and the venting cavity is formed. The thickness of the gap is in the range of 0.002mm-0.04mm.

2. The molding assembly of claim 1, wherein, The distance between the molding cavity and the venting cavity ranges from 0.2mm to 0.3mm.

3. The molding assembly of claim 1, wherein, The first mold body is provided with a first mold groove and a first venting groove on the side near the second mold body. The first mold groove is provided in the first venting groove and is distributed at intervals with the first venting groove. The second mold body is provided with a second mold groove and a second venting groove on the side near the first mold body. The second mold groove is located inside the second venting groove and is distributed at intervals with the second venting groove. When the mold is closed, the first mold body and the second mold body together close the first mold groove and the second mold groove to form the molding cavity, and together close the first vent groove and the second vent groove to form the venting cavity.

4. The molding assembly of claim 3, wherein, Multiple first mold slots and multiple first exhaust slots are provided, with multiple first mold slots distributed at intervals and multiple first exhaust slots distributed at intervals, and multiple first mold slots are provided one-to-one in multiple first exhaust slots. The second mold groove and the second exhaust groove are provided in multiples, the multiple second mold grooves are distributed at intervals, the multiple second exhaust grooves are distributed at intervals, and the multiple second mold grooves are provided one-to-one in the multiple second exhaust grooves.

5. The molding assembly of claim 3, wherein, The first mold body is also provided with a gate, which is connected to the first mold groove.

6. The molding assembly of claim 5, wherein, The gate includes a first conical channel and a second conical channel. The end of the second conical channel with a relatively larger diameter is connected to the end of the first conical channel with a relatively smaller diameter. The second conical channel is closer to the second mold body than the first conical channel, and the taper of the second conical channel is greater than that of the first conical channel.

7. The molding assembly of claim 6, wherein, The first mold body has a first core on the side near the second mold body, and the first core is located in the first mold groove; The gate is provided in multiple ways, and the multiple gates are distributed at intervals and arranged around the first core.

8. The molding assembly of claim 7, wherein, The first mold body has a connecting groove on the side away from the second mold body, and the plurality of the gates are located in the connecting groove.

9. The molding assembly of claim 1, wherein, The molding assembly further includes a sliding assembly, which is disposed between the first mold body and the second mold body; When the mold is closed, the sliding component is held by the first mold body and the second mold body, and the first mold body, the second mold body, and the sliding component together form a molding cavity.

10. An injection mold characterized in that, The injection assembly is arranged on the side of the first mold body away from the second mold body, and the injection assembly is communicated with the molding cavity.

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