A measuring device for deformation and flatness of injection molded products

Abstract

This invention relates to the field of deformation measurement technology, specifically a device for measuring the deformation and flatness of injection molded products. The device includes a base, a fixing device, and a measuring system. The base supports a support platform via a support rod. The fixing device is installed on the support platform. The measuring system includes a measuring head and a display screen. The measuring head can be adjusted in position before measurement, and the final result is displayed on the screen after measurement. This design has a reasonable structure and technology, improving measurement efficiency in actual operation and reducing costs.

Description

[Technical Field]

[0001] This invention relates to the field of deformation measurement, specifically a device for measuring the deformation and flatness of injection molded products. [Background Technology]

[0002] After injection molding, in order to meet the quality control requirements of subsequent assembly or painting processes, there are strict requirements on the specifications and shape of injection molded products. Therefore, it is necessary to test the deformation and flatness of the injection molded products.

[0003] Previously, commercially available testing equipment used dual-axis or tri-axis mechanisms to move and measure at specific points. This required continuous movement during measurement, resulting in high requirements for the overall accuracy of the equipment and the assembly and debugging of the machined parts. Furthermore, the measurement time at each point was relatively long and the measurement speed was slow. When batches of products needed to be tested, the time consumed was excessive. Throughout the testing process, the equipment needed to achieve high-precision moving detection. In order to achieve high precision, the cost of the machine tools used was also high.

[0004] In view of this, it is necessary to invent a device for measuring the flatness and deformation of plastic products, so as to improve the measurement accuracy of the flatness and deformation of injection molded products, increase the measurement speed, realize large-scale measurement while saving time and reducing measurement costs. [Summary of the Invention]

[0005] Therefore, the purpose of this invention is to provide a measuring device for the deformation and flatness of injection molded products. Compared with the previous method, this device can greatly improve the measurement efficiency of the flatness and deformation of injection molded products, and has higher measurement accuracy and significantly reduced measurement cost.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A measuring device for the deformation and flatness of injection molded products includes: a base, a fixing device, and a measuring system. The base is connected to a support platform, and the fixing device is provided on the support platform. The measuring system includes a measuring head and a main unit, and the measuring head is mounted on a sliding shaft.

[0008] The base is provided with a bottom stand, and a start button is provided on the base. The base and the support platform are fixedly supported and connected by a support rod.

[0009] The fixing device includes a marble platform, which is fixed on a support platform, and product positioning blocks are fixedly installed around the marble platform.

[0010] The marble platform is fixed to the support platform by foot fasteners at its four corners. The product positioning block can be repositioned according to the product size by means of positioning block screws.

[0011] The measuring head is a non-contact laser displacement sensor, and the measuring head is equipped with a measuring head handle, which is movably mounted on a sliding shaft by a wing screw.

[0012] The position of the measuring head in the sliding shaft can be changed by adjusting the tightness of the wing screw.

[0013] The sliding shaft is movably mounted on the fixed frame by sliding shaft bolts. The fixed frame is fixedly mounted on the metal rod. The position of the sliding shaft on the fixed frame can be changed by adjusting the tightness of the sliding shaft bolts, thereby changing the position of the measuring head mounted on the sliding shaft.

[0014] The main unit is fixedly connected to the support platform via a metal rod and support frame. The main unit is equipped with a display screen, indicator lights, a power switch, and a main board cover switch.

[0015] The indicator light indicates whether the machine is working properly, the main board cover switch can open the main board cover, and the display screen is used to input parameters and display measurement results.

[0016] The host has an internal SD card for storing data.

[0017] Compared with existing technologies, this invention is applicable to both large-scale product testing and single-product testing, which not only improves efficiency but also reduces costs. [Attached Image Description]

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a partial structural schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the product to be tested according to the present invention.

Detailed Implementation Methods

[0021] To further understand the purpose, technical effects, and technical means of this invention, a detailed description is provided below with reference to the accompanying drawings. Figure 1 , Figure 2 , Figure 3 As shown, the device for measuring the deformation and flatness of injection molded products according to the present invention consists of a base (1), a fixing device (2), a measuring system (3), etc.

[0022] The base (1) is a support base with an overall rectangular shape. Four casters (12) are provided on the base (1). The casters (12) can carry the entire device to move in any direction. The four casters (12) are fixed on four support rods (13). On the side of the support rods (13) close to the ground, a bottom shelf (14) is fixed between the four support rods (13). The four edges of the bottom shelf (14) are higher than its center, so that the bottom shelf (14) can store items. The A part of the notebook shell to be tested can be stored on it. The four support rods (13) are fixedly connected to the vertical upper support platform (22) to provide support. In addition, two green start buttons (15) are provided on one side edge of the base (1). After the device or machine is connected to the power supply, the start button (15) can be clicked to start it.

[0023] The fixing device (2) includes a support platform (22), on which a marble platform (23) is provided. The marble platform (23) is a rectangular stone. The marble platform (23) is fixedly connected to the support platform (22). At the four corners of the marble platform (23), the marble platform (23) is firmly fixed to the support platform (22) by foot fixing parts (24). The surface of the marble platform (23) is very smooth, without any roughness, protrusions or depressions, so as to ensure the accuracy of the measurement during measurement. This ensures that all measuring heads (32) can uniformly return to zero when the measurement has not started. Secondly, when the A part of the laptop casing is placed on the marble platform (23), it ensures that the measuring heads (32) have the same reference plane, i.e., the so-called reference plane. , which is also our zero point, on the support platform (22), next to the marble platform (23), there are product positioning blocks (25) respectively. Two product positioning blocks (25) are fixed on one side of the marble platform (23). On the opposite side of these two product positioning blocks (25), there are also two product positioning blocks (25). On the remaining two sides of the marble platform (23), there is one product positioning block (25) fixed on each side, for a total of six product positioning blocks (25). The product positioning blocks (25) are used to fix the product to be tested (4). The product to be tested (4) is mainly the outer shell A of the laptop, as well as other objects that need to be measured for flatness and deformation. The product positioning blocks (25) can be adjusted according to the size, shape and dimensions of the product to be tested (4). By adjusting the positioning block bolts (256) on the product positioning blocks (25), the position and size of the product positioning blocks (25) can be adjusted.

[0024] The measurement system (3) includes a measuring head (32), which is movably mounted on a sliding shaft (33). The measuring head (32) is a non-contact laser displacement sensor. A measuring head handle (332) is provided on the measuring head (33), which is fixed on the sliding shaft (33). The position of the measuring head (32) on the sliding shaft (33) can be changed by using the wing screw (333) on the measuring head handle (332), thereby changing the measurement point. In addition, the two sides of the sliding shaft (33) are movably connected to two fixed frames (34) through sliding shaft bolts (342). By adjusting the tightness of the sliding shaft bolts (342), the position of the sliding shaft (33) in the fixed frame (34) can be moved. This allows the measuring head (32) to be moved and adjusted in all directions (front, back, left, right) on the entire marble platform (23). The two fixed frames (34) are fixedly mounted on metal rods (36) on both sides of the support platform (22). On the main board (37), the metal rod (36) is fixedly installed on the support platform (22) and together with the support frame (35) it is fixedly connected to support the main board (37). The main board (37) contains a high-performance PLC main unit (not shown in the figure). The support frame (35) is also fixedly connected to the support platform (22). The main board (37) is equipped with a display screen (372). There is an indicator light (38) on one side of the display screen (372). The indicator light (38) is normally green, which means that the machine is working normally. Otherwise, it means that there is a malfunction. On the main board (37), there is a power switch (39) below the indicator light (38). Turn the power switch (39) and the indicator light (38) will light up. After about five seconds, the display screen (372) will enter the page. At this time, the parameters can be set through the display screen (372). There is a main board cover switch (373) on the other side of the display screen (372). In addition, the high-performance PLC main unit (not shown in the figure) is equipped with an SD card (not shown in the figure) to store data.

[0025] In addition, the product under test is generally part A of a laptop casing, but this device is also applicable to other products that require measurement, and there is already practical experience in its implementation.

[0026] In summary, the workflow is as follows: After connecting the power supply (220V) and pressing the start button (15), the indicator light (38) will light up. After about five seconds, the display screen (372) will pop up a page. At this time, according to the customer's testing requirements for the product to be tested (4), the position of the measuring head (32) is adjusted by the bolt (342) and the wing screw (333) on the marble platform (23). After adjustment, the wing screw (333) and the bolt (342) are tightened. The position of the measuring head (32) is entered in the display screen (372): the distance between the first measuring head (32) and the edge of one side of the product to be tested (4), and the spacing between each measuring head (32). At this time, it is confirmed that there are no foreign objects or the product to be tested (4) on the marble platform (23). Click zeroing on the display screen (372) and use the marble platform (23) as the reference. After zeroing the reference plane, the product to be tested (4) can be placed in the test. Press the start button (15) to start the test. If the deformation is measured, the measuring heads (32) are arranged in a straight line. Based on the coordinates measured by each measuring head (32) on the straight line, the system automatically judges whether the deformation is qualified. If qualified, it will display PASS on the display screen (372); otherwise, it will display NG. If the flatness is measured, the measuring heads (32) are arranged in a plane instead of a straight line. Repeat the above steps to complete the test. In addition, the number of measuring heads (32) can be increased or decreased according to the actual measurement needs. Generally, it is between four and eight, and sometimes as many as sixteen. After the measurement is completed, the records of the day can only be viewed on the display screen (372). Because the capacity of the PLC host (not shown in the figure) is small, we view the previous data in the SD card (not shown in the figure).

[0027] The above implementation method is quite reasonable. In actual work, the measurement position can be adjusted as needed, and multiple points can be measured simultaneously, which improves measurement efficiency. Furthermore, it eliminates the need for high-precision moving measurements, reducing costs and making it suitable for production line applications.

[0028] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A measuring device for the deformation and flatness of injection molded products, comprising: The base, the fixing device, and the measuring system are connected to the support platform. The support platform is equipped with the fixing device. The measuring system includes a measuring head and a main board. The measuring head is mounted on a sliding shaft. The measuring head is a non-contact laser displacement sensor, and the measuring head is equipped with a measuring head handle, which is movably mounted on a sliding shaft by a wing screw; The position of the measuring head in the sliding shaft can be changed by adjusting the tightness of the wing screw; The sliding shaft is movably mounted on the fixed frame by sliding shaft bolts. The fixed frame is fixedly mounted on the metal rod. The metal rod is fixedly mounted on the support platform. The position of the sliding shaft on the fixed frame can be changed by adjusting the tightness of the sliding shaft bolts, thereby changing the position of the measuring head mounted on the sliding shaft.

2. The device for measuring the deformation and flatness of injection molded products according to claim 1, characterized in that: The base is provided with a bottom stand, and a start button is provided on the base. The base and the support platform are fixedly supported and connected by a support rod.

3. The device for measuring the deformation and flatness of injection molded products according to claim 1, characterized in that: The fixing device includes a marble platform, which is fixed on a support platform, and product positioning blocks are arranged around the marble platform.

4. The device for measuring the deformation and flatness of injection molded products according to claim 3, characterized in that: The marble platform is fixed to the support platform by foot fasteners at its four corners. The product positioning block can be repositioned according to the product size by means of positioning block screws.

5. The measuring device for the deformation and flatness of injection molded products according to claim 1, characterized in that: The main board is fixedly connected to the support platform via a metal rod and support frame. The main board is equipped with a display screen, indicator lights, a power switch, and a main board cover switch.

6. The measuring device for the deformation and flatness of injection molded products according to claim 5, characterized in that: The indicator light indicates whether the machine is working properly, the main board cover switch can open the main board cover, and the display screen is used to input parameters and display measurement results.

7. The measuring device for the deformation and flatness of injection molded products according to claim 1, characterized in that: The motherboard contains a host computer, which has an SD card for storing data.

Images