CN113091564A - Tool and method for measuring installation height of metal insert of injection molding part - Google Patents

Abstract

The invention relates to a tool for measuring the mounting height of a metal insert of an injection molding part, which comprises a height gauge, a height measuring device and a height measuring device, wherein the height gauge is used for measuring and displaying the numerical value of the mounting height of the metal insert; the positioning block is arranged on the guide pipe at the lower part of the height gauge and used for accurately positioning during measurement; and the measuring head is arranged at the end part of the probe at the lower end of the height gauge, is positioned at the lower part of the positioning block and is used for contacting the metal insert to test the height of the metal insert. Compared with the prior art, the measuring tool solves the problem that the mounting height of the metal insert in the injection molding part cannot be measured well in the prior art. The measuring accuracy is high, the surface of the injection molding body near the metal insert is taken as a measuring reference, the mounting height of the metal insert can be accurately judged, the measuring mode is simple, convenient and efficient, one part can be measured within 10 seconds, the requirement of quality monitoring in the batch production process can be met, the requirements on measuring environment and personnel are low, and the monitoring and measuring are easily implemented on site in a production field.

Description

Tool and method for measuring installation height of metal insert of injection molding part

Technical Field

The invention relates to the technical field of automobile part manufacturing, in particular to a tool and a method for measuring the installation height of a metal insert of an injection molding part.

Background

Injection-molded parts are used in a large number of automobiles and are screwed and fixed by bolts, and the huge screwing force of the bolts must act on metal inserts of the injection-molded parts instead of injection-molded bodies, so that the injection-molded bodies are cracked, the parts are loosened and the functions are invalid, therefore, the installation height of the metal inserts must be ensured, and effective measurement and monitoring must be achieved in daily production. In production practice, a profile gauge is generally adopted to measure the height, but because parts are generally small and have no continuous measuring surface, the measurement error is very large, the detection frequency and efficiency are very low, the requirement on personnel is very high, and the height cannot be effectively monitored and managed in batch production due to the above limitations.

Disclosure of Invention

The invention aims to solve the problems, and provides a tool and a method for measuring the mounting height of a metal insert of an injection molding part, so as to solve the problem that the mounting height of the metal insert in the injection molding part cannot be measured well in the prior art.

The purpose of the invention is realized by the following technical scheme:

an injection molded part metal insert mounting height measuring tool, comprising:

the height gauge is used for measuring and displaying the numerical value of the installation height of the metal insert;

the positioning block is arranged on the guide pipe at the lower part of the height gauge and used for accurately positioning during measurement;

and the measuring head is arranged at the end part of the probe at the lower end of the height gauge, is positioned at the lower part of the positioning block and is used for contacting the metal insert to test the height of the metal insert.

Furthermore, the positioning block is of a cylindrical sleeve structure, and the measuring head can freely move up and down in the positioning block.

Furthermore, a threaded hole is machined in the side face of the positioning block, and the positioning block is fixed on the cylindrical guide pipe of the height gauge through a bolt.

Furthermore, the measuring head and the probe of height gage adopt threaded connection, can change the measuring head of different sizes as required.

Further, the tool also includes a calibration plate for calibration.

Furthermore, a plurality of calibration holes with different sizes are formed in the calibration flat plate.

Furthermore, the flatness of the calibration flat plate is larger than 0.04, and the calibration holes in the calibration flat plate are arranged in a straight line.

Further, the measuring head is the ladder cylindrical, including lower extreme measuring head and upper end measuring head, and the diameter of lower extreme measuring head is b, and the diameter of upper end measuring head is d, and the internal diameter of metal insert mounting hole is an, and the diameter of metal insert external dimension is c, and the size relation between them is:

a-b is less than 1mm, so that the guiding effect is ensured;

1mm < c-b <2mm, ensuring the benchmark to be effective.

d has the same dimensions as c, ensuring that the highest point of the insert is measured.

Further, the height gauge is a dial indicator or a dial indicator.

A measuring method of a tool for measuring the installation height of a metal insert of an injection molding part comprises the following steps:

(1) installing a positioning block and a measuring head which are adaptive to the sizes of the parts;

(2) calibrating the height gauge on the calibration flat plate, and returning the value to zero;

(3) placing the measuring head into a hole of the metal insert, pressing the positioning block on the surface of the injection molding part, and ensuring 360-degree attachment;

(4) and reading the reading of the height gauge, namely the mounting height of the metal insert.

Compared with the prior art, the invention has the following advantages:

1. the measuring precision is high, the mounting height of the metal insert can be accurately judged by taking the surface of the injection molding body near the metal insert as a measuring reference, and the height gauge can be a dial indicator or a dial indicator;

2. the measuring mode is simple and efficient, one part can be measured within 10 seconds, and the requirement of quality monitoring in the batch production process can be met;

3. the requirement on the measurement environment and personnel is low, and the monitoring measurement is easy to be carried out on site in the production field;

4. a threaded hole is machined in the side face of the positioning block, the positioning block is fixed on a cylindrical conduit of the height gauge through a bolt, threads are machined in the upper portion of the measuring head, and the measuring head is connected with a probe of the height gauge through the threads, so that the measuring heads with different sizes can be conveniently replaced;

5. the measuring tool is high in measuring precision, fast, efficient, simple to operate, low in requirements on environment and personnel capacity, and very suitable for operators to use in production sites.

Drawings

FIG. 1 is a schematic view of a measuring tool of the present invention;

FIG. 2 is a schematic view of a calibration plate according to the present invention;

FIG. 3 is a schematic view of a measuring tool of the present invention in use;

FIG. 4 is a graph showing the relationship between the dimensions of the measuring head and the metal insert of the present invention;

FIG. 5 is a pictorial view of a specific measurement tool of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Referring to fig. 1, a tool for measuring the installation height of a metal insert of an injection-molded part comprises: the height gauge 1 is used for measuring and displaying the numerical value of the installation height of the metal insert; the positioning block 2 is arranged on the guide pipe at the lower part of the height gauge 1 and used for accurately positioning during measurement; and the measuring head 4 is arranged at the end part of the probe 3 at the lower end of the height gauge, is positioned at the lower part of the positioning block 2, and is used for contacting the metal insert 5 to test the height of the metal insert. As shown in fig. 5, the height gauge 1 is a dial indicator or a dial indicator. The locating piece 2 is cylindrical sleeve structure, and measuring head 4 can freely move from top to bottom in the locating piece, and the side processing screw hole of locating piece 2 to fix the locating piece on height gauge 1's cylindrical pipe through the bolt, measuring head 4 adopts threaded connection with height gauge's probe 3, can change not unidimensional measuring head as required.

As shown in fig. 2, the tool also includes a calibration plate 7 for calibration. The calibration flat plate is provided with a plurality of calibration holes with different sizes, the flatness of the calibration flat plate is larger than 0.04, and the calibration holes on the calibration flat plate are arranged in a straight line.

As in fig. 4, the measuring head is in a stepped cylindrical shape, and includes a lower end measuring head and an upper end measuring head, the diameter of the lower end measuring head is b, the diameter of the upper end measuring head is d, the inner diameter of the mounting hole of the metal insert is a, the diameter of the external dimension of the metal insert is c, and the dimensional relationship between the two is as follows: a-b is less than 1mm, so that the guiding effect is ensured; 1mm < c-b <2mm to ensure that the datum is valid, and d has the same size as c to ensure that the highest point of the insert is measured.

A measuring method of a tool for measuring the installation height of a metal insert of an injection molding part, as shown in figure 3, comprises the following steps:

(1) a positioning block 2 and a measuring head 4 which are adaptive to the sizes of parts are installed;

(2) calibrating the height gauge 1 on the calibration flat plate 7, and zeroing the numerical value;

(3) placing the measuring head 4 into a hole of the metal insert 5, pressing the positioning block 2 on the surface of the injection molding part 6, and ensuring 360-degree attachment;

(4) and reading the reading of the height gauge 1, namely the installation height of the metal insert 4.

The invention takes the surface of the injection molding body near the metal insert as the measuring reference, can accurately judge the installation height of the metal insert, and the height gauge can be a dial indicator or a dial indicator; the measuring mode is simple and efficient, one part can be measured within 10 seconds, and the requirement of quality monitoring in the batch production process can be met; the requirement on the measurement environment and personnel is low, and the monitoring measurement is easy to be carried out on site in the production field; a threaded hole is machined in the side face of the positioning block, the positioning block is fixed on a cylindrical conduit of the height gauge through a bolt, threads are machined in the upper portion of the measuring head, and the measuring head is connected with a probe of the height gauge through the threads, so that the measuring heads with different sizes can be conveniently replaced; the measuring tool is high in measuring precision, fast, efficient, simple to operate, low in requirements on environment and personnel capacity, and very suitable for operators to use in production sites.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (10)

1. The utility model provides an injection molding part metal insert mounting height measuring tool which characterized in that includes:

the height gauge is used for measuring and displaying the numerical value of the installation height of the metal insert;

the positioning block is arranged on the guide pipe at the lower part of the height gauge and used for accurately positioning during measurement;

and the measuring head is arranged at the end part of the probe at the lower end of the height gauge, is positioned at the lower part of the positioning block and is used for contacting the metal insert to test the height of the metal insert.

2. An injection molding part metal insert mounting height measuring tool as claimed in claim 1, wherein said positioning block is of a cylindrical sleeve structure, and said measuring head is freely movable up and down within said positioning block.

3. An injection molded part metal insert mounting height measuring tool as claimed in claim 2, wherein the side of the locating block is threaded and is fixed to the cylindrical guide tube of the height gauge by a bolt.

4. An injection molded part metal insert mounting height measuring tool as claimed in claim 1 wherein said measuring head is threadably connected to said height gauge probe.

5. An injection molded part metal insert mounting height measurement tool as claimed in claim 1 further comprising a calibration plate for calibration.

6. An injection molded part metal insert mounting height measuring tool as claimed in claim 5 wherein said calibration plate is provided with a plurality of calibration holes of different sizes.

7. An injection molded part metal insert mounting height measuring tool as claimed in claim 6, wherein the flatness of the calibration plate is greater than 0.04, and the calibration holes on the calibration plate are arranged in a straight line.

8. An injection molding part metal insert mounting height measuring tool according to claim 1, wherein the measuring heads are in a stepped cylindrical shape and comprise a lower end measuring head and an upper end measuring head, the diameter of the lower end measuring head is b, the diameter of the upper end measuring head is d, the inner diameter of the metal insert mounting hole is a, the diameter of the outer dimension of the metal insert is c, and the dimensional relationship between the lower end measuring head and the upper end measuring head is as follows: a-b <1mm, 1mm < c-b <2mm, d being the same size as c.

9. An injection moulded part metal insert mounting height measuring tool as claimed in any one of claims 1 to 8, wherein the height gauge is a dial gauge or a dial gauge.

10. A method of measuring a tool for measuring the mounting height of a metal insert of an injection molded part according to claim 9, comprising the steps of:

(1) installing a positioning block and a measuring head which are adaptive to the sizes of the parts;

(2) calibrating the height gauge on the calibration flat plate, and returning the value to zero;

(3) placing the measuring head into a hole of the metal insert, pressing the positioning block on the surface of the injection molding part, and ensuring 360-degree attachment;

(4) and reading the reading of the height gauge, namely the mounting height of the metal insert.

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