Mold test fixture and mold test system

Abstract

The utility model discloses a mold test fixture and a mold test system, the mold test fixture is used for testing whether a vacuum hole of a mold is blocked, the mold test fixture comprises a test main body, the test main body is provided with a plurality of through holes, and one end of at least part of the through holes is used for communicating with one end of the vacuum hole; the other ends of at least part of the through holes are correspondingly provided with airflow indicating pieces, and the airflow indicating pieces can generate position changes under the action of airflow. When the other end of the vacuum hole of the mold is subjected to an air blowing test, whether the vacuum hole of the mold is blocked or not can be determined by observing whether the position of the airflow indicator in the mold test jig provided by the utility model is changed or not, so that the test accuracy and efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of mold testing technology, and in particular to a mold testing fixture and a mold testing system. Background Technology

[0002] T-mold technology can produce high-precision molds with high efficiency and is now widely used. However, molds produced using this technology have a high risk of vacuum hole blockage. Injection molding using a mold with blocked vacuum holes will prevent air from escaping properly from the mold cavity, resulting in molding defects such as silver streaks, burning, and weld lines, seriously affecting product quality. Therefore, it is essential to determine whether the vacuum holes in the mold are blocked.

[0003] The existing method primarily uses an air pump to blow air into one end of the vacuum hole in the mold, and then a person manually checks the other end of the vacuum hole to see if the airflow is unobstructed, thus determining whether the vacuum hole is blocked. Because the mold has numerous vacuum holes, this significantly impacts the efficiency of the inspection. Utility Model Content

[0004] This application provides a mold testing fixture and a mold testing system.

[0005] One technical solution adopted in this application is to provide a mold testing fixture, which is used to test whether the vacuum hole of the mold is blocked. The mold testing fixture includes:

[0006] The test body has several through holes, and at least one end of some of the through holes is used to communicate with one end of a vacuum hole.

[0007] At least one of the through holes is provided with an airflow indicator at the other end, and the airflow indicator can change position under the action of airflow.

[0008] Optionally, at least one end of each of the through holes is located on the first surface of the test body;

[0009] The test body also includes a second side opposite to the first side, and the airflow indicator is located on the second side.

[0010] Optionally, the airflow indicator includes a fixed end and a movable end, the fixed end being fixedly disposed on the second surface, and the movable end at least covering the through hole.

[0011] Optionally, the airflow indicator is a ribbon.

[0012] Optionally, at least one end of each of the through holes is also provided with a sealing ring.

[0013] Optionally, the inner diameter of at least a portion of the sealing ring is smaller than the diameter of at least a portion of the through hole.

[0014] Optionally, the mold testing fixture also includes a handle, which is mounted on the testing body.

[0015] Another technical solution adopted in this application is to provide a mold testing system, which includes the mold testing fixture as described above;

[0016] A pressure pump is connected to the other end of the vacuum hole of the mold, and the pressure pump is configured to provide positive air pressure to the other end of the vacuum hole.

[0017] Optionally, the pressure pump is connected to the vacuum port via a pipeline.

[0018] The beneficial effects of this application are: at least one end of the through hole is connected to one end of the vacuum hole, and at least one end of the through hole is correspondingly provided with an airflow indicator, which can change position under the action of airflow. When performing a blowing test on the other end of the vacuum hole of the mold, it can be determined whether the vacuum hole of the mold is blocked by observing whether the airflow indicator in the mold test fixture provided by this application changes position, thereby improving the accuracy and efficiency of the test. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the mold testing fixture provided in this application;

[0021] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the mold test fixture in region P along the mounting direction.

[0022] Figure 3 This is a flowchart illustrating an embodiment of the mold testing system provided in this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, or apparatuses.

[0025] To determine if a mold's vacuum orifice is blocked, some related technologies use an air pump to blow air into one end of the orifice, while a person holds the other end to feel the airflow and assess the blockage. However, since the mold reaches high temperatures after processing, this method carries a risk of burns. Furthermore, relying on a person's hand to assess airflow can lead to subjective misjudgment. Moreover, given the large number (dozens) of vacuum orifices in a mold, this method is insufficient to accurately pinpoint the exact location of any blockages.

[0026] In other related technologies, a pipe is used to connect one end of the negative pressure pump and the vacuum port. A pressure sensor is installed inside the pipe. By detecting the pressure value of the pressure sensor, it is determined whether the vacuum port is blocked. This solution can objectively determine whether the vacuum port is blocked to a certain extent. However, the use of a pressure sensor increases the complexity and cost of the test.

[0027] like Figure 1 and Figure 2 As shown, the mold testing fixture 10 includes a testing body 11, which has a plurality of through holes 12, at least one end of which is connected to one end of the vacuum hole 3 of the mold 2. The testing body 11 has a length direction x, a width direction y, and an installation direction az. The installation direction az refers to the direction in which the testing body 11 is installed on the mold 2.

[0028] In some embodiments, the through holes 12 are spaced apart along the length direction x. In some embodiments, the through holes 12 are spaced apart along the width direction y.

[0029] In some embodiments, the test body 11 is a chrome-plated iron plate. In some possible embodiments, the test body 11 may be a stainless steel plate, other metal plates, or other alloy plates, and there is no limitation herein.

[0030] In some embodiments, the through holes 12 on the test body are configured to correspond one-to-one with the vacuum holes 3 on the mold 2.

[0031] It should be noted that the number of through holes 12 can be greater than or equal to the number of vacuum holes 3. In some applications, the mold testing fixture 10 can test at least one mold simultaneously to improve the efficiency of mold testing. In some applications, the mold testing fixture 10 can support testing of molds of different models (or sizes) to improve compatibility.

[0032] Furthermore, at least one of the through holes 12 is provided with an airflow indicator 13 at the other end, and the airflow indicator 13 can change position under the action of airflow.

[0033] Understandably, if the vacuum hole 3 is not blocked, during the air blowing test, the vacuum hole 3 and the corresponding through hole 12 form an airflow channel, causing the airflow indicator 13 corresponding to the through hole 12 to change position. If the vacuum hole 3 is blocked, during the air blowing test, the vacuum hole 3 and the corresponding through hole 12 cannot form an airflow channel, causing the airflow indicator 13 corresponding to the vacuum hole 3 to not change position. That is, during the air blowing test, by observing whether the airflow indicator 13 corresponding to the vacuum hole 3 changes position, it can be intuitively determined whether the vacuum hole 3 is blocked.

[0034] In some possible embodiments, the degree of positional change of the airflow indicator 13 during the air blowing test can be used to determine whether the corresponding vacuum hole 3 is blocked. For example, if the positional change of a certain airflow indicator 13 is small during the air blowing test, it can be assumed that the vacuum hole 3 corresponding to the airflow indicator 13 is blocked. Conversely, if the positional change of a certain airflow indicator 13 is large during the air blowing test, it can be assumed that the corresponding vacuum hole 3 is not blocked.

[0035] In some embodiments, the airflow indicator 13 may be an impeller sight glass or an airflow indicator.

[0036] Optionally, at least one end of each of the at least some of the through holes 12 is disposed on the first surface of the test body 11. The test body 11 also includes a second surface opposite to the first surface, and the airflow indicator 13 is disposed on the second surface.

[0037] In some embodiments, the first surface of the test body 11 is fitted to the mold 2.

[0038] Understandably, at least some of the vacuum holes 3 of the mold 2 are disposed on the same surface. The number of at least some vacuum holes 3 is the same as the number of at least some through holes 12.

[0039] For example, the first surface is the bottom surface of the test body 11, and the second surface is the top surface of the test body 11.

[0040] Optionally, the airflow indicator 13 includes a fixed end and a movable end, the fixed end being disposed on the second surface, and the movable end at least covering the through hole 12.

[0041] In some embodiments, the airflow indicator 13 is a flexible strip. In some applications, the airflow indicator 13 is strip-shaped.

[0042] In some embodiments, if a vacuum orifice is not blocked, the movable end of the airflow indicator 13 corresponding to that vacuum orifice will be blown up during the air blowing test. If a vacuum orifice is blocked, the movable end of the airflow indicator 13 corresponding to that vacuum orifice will not be blown up during the air blowing test. That is, whether a vacuum orifice is blocked can be visually determined by observing whether the movable end corresponding to the vacuum orifice is blown up during the air blowing test.

[0043] In some embodiments, each through-hole 12 corresponds to an airflow indicator 13.

[0044] Optionally, the airflow indicator 13 is a ribbon.

[0045] In some embodiments, the ribbon is a silicone ribbon.

[0046] Understandably, if the vacuum orifice is not blocked, the ribbon corresponding to that orifice will be blown up during the air blowing test. If the vacuum orifice is blocked, the ribbon corresponding to that orifice will not be blown up during the air blowing test. In other words, whether the vacuum orifice is blocked can be visually determined by observing whether the ribbon corresponding to the vacuum orifice is blown up during the air blowing test.

[0047] Optionally, at least one end of some of the through holes 12 is also provided with a sealing ring.

[0048] In some potential applications, if a target vacuum orifice is blocked while other vacuum orifices around it are not, these orifices may form an airflow channel with the corresponding through-hole of the target vacuum orifice. This could cause a positional change in the airflow indicator corresponding to that through-hole, resulting in a false positive. To avoid this problem, a sealing ring is installed on the through-hole to improve the accuracy and reliability of the test.

[0049] Optionally, the inner diameter of at least a portion of the sealing ring is smaller than the diameter of at least a portion of the through hole 12.

[0050] In some potential applications, the diameter of at least some of the through holes 12 is larger than the diameter of their corresponding vacuum holes 3. To prevent a target vacuum hole from becoming blocked during a blow-through test, while other vacuum holes around the target vacuum hole remain blocked, other vacuum holes may form an airflow channel with the through hole corresponding to the target vacuum hole, causing a positional change in the airflow indicator corresponding to that through hole, i.e., generating a false positive. The above configuration can increase the versatility of the mold testing fixture 10 for vacuum holes with different diameters.

[0051] In some embodiments, the sealing ring is detachably disposed from at least one end of the through hole 12.

[0052] In some possible embodiments, the diameter of some through holes 12 is different from the diameter of other through holes 12.

[0053] Optionally, the first surface is also provided with a positioning groove corresponding to the mold 2. The positioning groove is used to install the mold 2 on the mold testing fixture 10 so that at least part of the through hole 12 is aligned with the vacuum hole 3 of the mold 2.

[0054] In some embodiments, the first surface is also provided with a positioning pin, which guides the mold 2 to align with the mold test fixture 10.

[0055] In some embodiments, the mold testing fixture 10 also includes a handle 14, which is disposed on the testing body 11. The handle 14 facilitates the operator in lifting the mold testing fixture 10.

[0056] In the above-described scheme, at least one end of a portion of the through-hole is connected to one end of the vacuum hole, and at least the other end of a portion of the through-hole is correspondingly provided with an airflow indicator, which can change position under the action of airflow. When performing a blowing test on the other end of the vacuum hole of the mold, it can be determined whether the vacuum hole of the mold is blocked by observing whether the airflow indicator in the mold test fixture provided in this application changes position, thereby improving the accuracy and efficiency of the test.

[0057] Please see Figure 3 The mold testing system 20 provided in this application may include a mold testing fixture 21 and a pressure pump 22. The pressure pump 22 is connected to the other end of the vacuum hole 5 of the mold 4 and is configured to provide positive air pressure to the other end of the vacuum hole 5.

[0058] Optionally, the pressure pump 22 is connected to the vacuum port 5 via a pipe 23.

[0059] Understandably, the pressure pump 22 can be used to perform a blowing test on the other end of the vacuum port 5. In some embodiments, if the target vacuum port is not blocked, the pressure pump, the pipeline 23, the target vacuum port, and the corresponding through hole on the mold test fixture 21 form an airflow channel, and further, the position of the corresponding airflow indicator on the mold test fixture 21 changes.

[0060] In some embodiments, a single pressure pump 22 corresponds to a single vacuum port 5. In some embodiments, a single pressure pump 22 may correspond to multiple vacuum ports 5.

[0061] In some possible embodiments, the conduit 23 is equipped with several valves, each valve corresponding to a single vacuum port 5, to perform a blowing test on a specific single or multiple vacuum ports 5. In some possible application scenarios, when performing a blowing test on the mold 4, if a certain vacuum port 5 is determined to be blocked, only the valve corresponding to that vacuum port 5 can be opened before performing the blowing test, thereby improving the accuracy of the test.

[0062] In the above-described scheme, at least one end of a portion of the through-hole is connected to one end of the vacuum hole, and at least the other end of a portion of the through-hole is correspondingly provided with an airflow indicator, which can change position under the action of airflow. When performing a blowing test on the other end of the vacuum hole of the mold, it can be determined whether the vacuum hole of the mold is blocked by observing whether the airflow indicator in the mold test fixture provided in this application changes position, thereby improving the accuracy and efficiency of the test.

[0063] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A mold testing fixture, characterized in that, The mold testing fixture is used to test whether the vacuum hole of the mold is blocked. The mold testing fixture includes: The test body is provided with a plurality of through holes, at least one end of some of the through holes being used to communicate with one end of the vacuum hole; At least some of the through holes are provided with an airflow indicator at the other end, and the airflow indicator is able to change position under the action of airflow.

2. The mold testing fixture according to claim 1, characterized in that, At least one end of each of the through holes is disposed on the first surface of the test body; The test body also includes a second surface opposite to the first surface, and the airflow indicator is disposed on the second surface.

3. The mold testing fixture according to claim 2, characterized in that, The airflow indicator includes a fixed end and a movable end. The fixed end is fixedly disposed on the second surface, and the movable end at least covers the through hole.

4. The mold testing fixture according to claim 3, characterized in that, The airflow indicator is a ribbon.

5. The mold testing fixture according to claim 2, characterized in that, At least one end of each of the through holes is also provided with a sealing ring.

6. The mold testing fixture according to claim 2, characterized in that, The inner diameter of at least a portion of the sealing ring is smaller than the diameter of the at least a portion of the through hole.

7. The mold testing fixture according to claim 1, characterized in that, The test body is also provided with a positioning groove corresponding to the mold.

8. The mold testing fixture according to claim 1, characterized in that, The mold testing fixture also includes a handle, which is disposed on the testing body.

9. A mold testing system, characterized in that, The mold testing system includes: The mold testing fixture as described in any one of claims 1-8; A pressure pump is connected to the other end of a vacuum hole in the mold, and the pressure pump is configured to provide positive air pressure to the other end of the vacuum hole.

10. The mold testing system according to claim 9, characterized in that, The pressure pump is connected to the vacuum port via a pipeline.

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