A mold for testing flow rate of long fiber pp composite

Abstract

The utility model discloses a kind of moulds of testing long fiber PP composite material flow rate, belong to mould technical field, including test mould, the test mould includes upper die, lower die and forming groove, it is characterized by: the upper die is connected on the lower die, the forming groove is set on the lower die, the forming groove between the upper die and lower die, inlet is provided on the lower die, flow channel is provided on the lower die, one end of the flow channel is connected on the inlet, the other end of the flow channel is connected on one end of the forming groove, the forming groove is spirally arranged on the lower die, fixed groove is opened on the lower die, the other end of the forming groove is communicated with the fixed groove, inductor is provided in the fixed groove, the inductive head of the inductor is towards the forming groove, the utility model has the advantage of improving the test accuracy of liquid material flow rate.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a mold for testing the flow rate of long fiber PP composite materials. Background Technology

[0002] Long-fiber PP composites are composite materials whose mechanical properties are enhanced by incorporating long glass fibers (LGF) or other long fibers (such as carbon fibers) into a polypropylene (PP) matrix. They are made from liquid materials through compression molding. The properties of compression-molded long-fiber PP composites will differ depending on the viscosity of the liquid material; therefore, the viscosity of the liquid material needs to be tested during production.

[0003] The viscosity of liquid materials is typically tested using a test mold. The viscosity of the liquid material is determined by measuring its flow rate within the mold. Liquids with high viscosity flow slowly in the test mold; conversely, liquids with low viscosity flow quickly.

[0004] Regarding the above technical conditions, there is still a drawback: the accuracy of the test mold in measuring the flow rate of liquid materials is not good enough.

[0005] Based on this, this utility model designs a mold for testing the flow rate of long-fiber PP composite materials to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a mold for testing the flow rate of long-fiber PP composite materials, so as to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mold for testing the flow rate of long-fiber PP composite materials, comprising a test mold, the test mold including an upper mold, a lower mold, and a forming groove, the upper mold being connected to the lower mold, the forming groove being disposed on the lower mold between the upper mold and the lower mold, the lower mold having a feed inlet and a flow channel, one end of the flow channel being connected to the feed inlet, and the other end of the flow channel being connected to one end of the forming groove, the forming groove being spirally arranged on the lower mold, the lower mold having a fixing groove, the fixing groove communicating with the other end of the forming groove, and a sensor being disposed in the fixing groove, the sensor head facing the forming groove.

[0008] Preferably, the forming groove is provided with an auxiliary groove, and multiple auxiliary grooves are provided on the forming groove. An auxiliary block adapted to the auxiliary groove is fixedly connected to the upper mold, and the auxiliary block is engaged in the auxiliary groove.

[0009] Preferably, the lower mold has a guide hole, and the upper mold has a guide rod, which is inserted into the guide hole.

[0010] Preferably, the end of the guide hole facing the guide rod is flared, and the end of the guide rod facing the guide hole is constricted.

[0011] Preferably, the lower mold has multiple positioning grooves, and the upper mold has a positioning strip that matches the positioning grooves, the positioning strip being engaged in the positioning grooves.

[0012] In summary, this application has the following beneficial technical effects: During use, the upper mold is closed onto the lower mold, and liquid material is injected into the flow channel from the inlet, then into the molding tank. Once the liquid material has completely filled the molding tank, a sensor at the end of the molding tank detects its presence. The time required for the liquid material to completely fill the molding tank can then be calculated. Because the length of the molding tank is fixed, the flow rate of the liquid material in the molding tank can be calculated. Furthermore, because the molding tank is spirally arranged on the lower mold, its length on the lower mold is longer, resulting in better flow stability of the liquid material in the molding tank. This leads to a more accurate calculated flow rate, thus improving the accuracy of liquid material flow rate testing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0014] Figure 1 This is a schematic diagram of the test mold in this embodiment;

[0015] Figure 2 This is a schematic diagram of the installation structure of the test mold in this embodiment;

[0016] Figure 3 This is a schematic diagram of the front structure of the lower mold in this embodiment.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Upper mold; 2. Lower mold; 3. Feed port; 4. Sensor; 5. Positioning block; 6. Auxiliary block; 7. Guide rod; 8. Auxiliary groove; 9. Positioning groove; 10. Guide hole; 11. Forming groove; 12. Runner. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0021] A mold for testing the flow rate of long-fiber PP composite materials includes a test mold comprising an upper mold 1, a lower mold 2, and a forming groove 11. The upper mold 1 is connected to the lower mold 2, and the forming groove 11 is disposed on the lower mold 2, between the two molds. An inlet 3 is provided on the side of the lower mold 2 away from the upper mold 1. A flow channel 12 is provided on the lower mold 2, with one end connected to the inlet 3 and the other end connected to one end of the forming groove 11. Liquid material enters the flow channel 12 from the inlet 3 and then flows into the forming groove 11. After being fully filled in the forming groove 11, the liquid material solidifies and forms the final product.

[0022] A fixing groove is provided on the lower mold 2, which is connected to the other end of the forming groove 11. A sensor 4 is installed in the fixing groove, with the sensing head of the sensor 4 facing the forming groove 11. Liquid material enters the forming groove 11 through the feed port 3 and the flow channel 12. When the liquid material is completely filled into the forming groove 11, the sensor 4 senses the presence of the liquid material. At this time, the time required for the liquid material to completely fill the forming groove 11 can be calculated. Since the length of the forming groove 11 is fixed, the flow rate of the liquid material in the forming groove 11 can be calculated.

[0023] The forming groove 11 is spirally arranged on the lower mold 2, which makes the length of the forming groove 11 on the lower mold 2 longer. The longer the length of the forming groove 11 on the lower mold 2, the better the flow stability of the liquid material in the forming groove 11, and the more accurate the final calculated flow rate result.

[0024] The forming groove 11 has auxiliary grooves 8, and multiple auxiliary grooves 8 are provided on the forming groove 11. An auxiliary block 6 that matches the auxiliary groove 8 is fixedly connected to the upper mold 1, and the auxiliary block 6 is snapped into the auxiliary groove 8. When demolding is required, the auxiliary groove 8 can easily remove the finished product from the lower mold 2.

[0025] The lower mold 2 has a guide hole 10, and the upper mold 1 has a guide rod 7. The guide rod 7 is inserted into the guide hole 10. The guide rod 7 and the guide hole 10 serve as guides, making it easier for the upper mold 1 to close more accurately on the lower mold 2. The end of the guide hole 10 facing the guide rod 7 is flared, and the end of the guide rod 7 facing the guide hole 10 is constricted, making it easy to insert the guide rod 7 into the guide hole 10.

[0026] The lower mold 2 has multiple positioning grooves 9. The upper mold 1 has a fixed positioning strip that matches the positioning groove 9, and the positioning strip engages within the positioning groove 9. The positioning strip and positioning groove 9 increase the contact area between the upper mold 1 and the lower mold 2, increasing the contact friction between them and making the connection between the upper mold 1 and the lower mold 2 tighter.

[0027] The implementation principle of this embodiment is as follows: In use, the upper mold 1 is closed onto the lower mold 2, and the liquid material is injected into the flow channel 12 through the inlet 3, and then into the molding tank 11. When the liquid material completely fills the molding tank 11, the sensor 4 at the end of the molding tank 11 senses the presence of the liquid material. At this time, the time required for the liquid material to completely fill the molding tank 11 can be calculated. Since the length of the molding tank 11 is fixed, the flow rate of the liquid material in the molding tank 11 can be calculated. Furthermore, because the molding tank 11 is spirally arranged on the lower mold 2, the length of the molding tank 11 laid on the lower mold 2 is longer, the flow stability of the liquid material in the molding tank 11 is better, and the calculated flow rate of the liquid material is more accurate, thus improving the accuracy of the test of the liquid material flow rate.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for testing the flow rate of long-fiber PP composite materials, comprising a test mold, characterized in that: The test mold includes an upper mold (1), a lower mold (2), and a forming groove (11). The upper mold (1) is connected to the lower mold (2). The forming groove (11) is located on the lower mold (2) and is between the upper mold (1) and the lower mold (2). The lower mold (2) is provided with a feed port (3) and a flow channel (12). One end of the flow channel (12) is connected to the feed port (3), and the other end of the flow channel (12) is connected to one end of the forming groove (11). The forming groove (11) is spirally arranged on the lower mold (2). The lower mold (2) is provided with a fixing groove, which is connected to the other end of the forming groove (11). A sensor (4) is provided in the fixing groove, and the sensing head of the sensor (4) faces the forming groove (11).

2. The mold for testing the flow rate of long-fiber PP composite material according to claim 1, characterized in that: An auxiliary groove (8) is provided on the forming groove (11). Multiple auxiliary grooves (8) are provided on the forming groove (11). An auxiliary block (6) that is adapted to the auxiliary groove (8) is fixedly connected to the upper mold (1). The auxiliary block (6) is snapped into the auxiliary groove (8).

3. The mold for testing the flow rate of long-fiber PP composite material according to claim 1, characterized in that: The lower mold (2) has a guide hole (10), and the upper mold (1) has a guide rod (7), which is inserted into the guide hole (10).

4. The mold for testing the flow rate of long-fiber PP composite material according to claim 3, characterized in that: The guide hole (10) is flared at one end facing the guide rod (7), and the guide rod (7) is constricted at the other end facing the guide hole (10).

5. The mold for testing the flow rate of long-fiber PP composite material according to claim 1, characterized in that: The lower mold (2) is provided with a plurality of positioning grooves (9), and the upper mold (1) is fixedly provided with positioning strips that are adapted to the positioning grooves (9), and the positioning strips are engaged in the positioning grooves (9).

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