Pressure detection device and pressure detection method

Abstract

The invention relates to the field of testing of fixing strength, in particular to a pressure detection device and a pressure detection method, which are used for detecting the firmness degree of a rivet on a product, and are characterized in that the pressure detection device comprises a detection platform doing reciprocating motion and a positioning platform doing reciprocating motion in the other direction, and the two reciprocating motion directions have an intersection, the detection platform is provided with a cylinder and a sensor, a piston rod of the cylinder and a probe of the sensor abut against a product on the positioning platform and make contact with a rivet in the product, the sensor is a contact sensor, and the contact sensor is used for conducting data transmission with an interaction center. According to the new judgment mode, on the premise of sensor contact, the current height value of the rivet and the position of the probe before and after the rivet is pressed are measured through the probe, and based on the detection mode, the automatic detection effect on the product is achieved, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the field of testing fixing strength, in particular to a pressure detection device and a pressure detection method. Background Art

[0002] like Figure 3 As shown, Figure 3 The utility model relates to an existing storage back plate, wherein the storage back plate is provided with a pin hole, and a pin is riveted into the pin hole.

[0003] After assembly, it is necessary to check the tightness of the rivet in the pin hole. If the pin is loose, it is judged that there is a problem with the product during riveting. However, this judgment process is based on manual judgment. This method of feeling makes it difficult to detect the firmness of the pin on the back plate of the storage device. Only when it is particularly loose will it be judged that there is a problem with the riveting effect.

[0004] The existing riveting strength testing machine is designed for the sampling mode, and one product is selected for strength testing. However, this testing machine will damage the rivet during each test (for example, patent number 202210541769.9 is named as test tooling and riveting force testing equipment). Obviously, this is not suitable for testing every product. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a pressure detection device, which is used to replace the method of judging tightness by feeling and solve the problem of inaccurate tightness detection.

[0006] The invention provides a pressure detection device, which will not damage the rivet or the product when testing the rivet strength, thereby ensuring the integrity of the product.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a pressure detection device, characterized in that it is used to detect the firmness of rivets on products, characterized in that it includes a detection platform that performs reciprocating motion, and a positioning platform that performs reciprocating motion in another direction, and the two reciprocating motion directions have an intersection, so that the cylinder and sensor provided on the detection platform, the piston rod of the cylinder and the probe of the sensor are respectively against the product on the positioning platform, and contact with the rivets in the product, and the sensor is a contact sensor, which is used to transmit data with the interaction center.

[0008] Furthermore, a pressing block is provided on the detection platform, and when the probe is squeezed and retracted, the pressing block is kept in a state of contact with the product.

[0009] Further, the pressing block is adjacent to the contact sensor.

[0010] Furthermore, the positioning platform is provided with an avoidance hole for the pin to pass through.

[0011] Furthermore, it also includes a first linear motion mechanism, which is composed of a first sliding component and a first drive motor, and the output end of the first drive motor is connected to the movable end of the first sliding component.

[0012] Furthermore, it also includes a second linear motion mechanism, which is composed of a second sliding component and a second drive motor, and the output end of the second drive motor is connected to the movable end of the second sliding component.

[0013] A pressure detection method:

[0014] S1, transporting the product on the positioning platform to the moving path of the sensor through the first linear moving mechanism;

[0015] S2, the second linear motion mechanism transports the sensor so that the sensor is positioned toward the product;

[0016] S3, the probe in the contact sensor contacts the pin of the product and retracts into the contact sensor. The interactive center obtains the height value and current position of the pin.

[0017] S3, a first linear moving mechanism, transports the product on the positioning platform to the moving path of the cylinder, and repeats step S2, so that the piston rod of the cylinder contacts the pin;

[0018] S4, the cylinder outputs a force of 50N to the pin and maintains the pressurization time for 2S;

[0019] S5, the first linear moving mechanism transports the product on the positioning platform to the moving path of the sensor, uses the probe to contact the pin again, and obtains the pressurized position of the pin through the interactive center;

[0020] S6, the interactive center, determines whether the looseness value is within the preset upper limit value by comparing the value before and after compression.

[0021] The use effect of the present invention:

[0022] 1. The new judgment method is based on the premise of sensor contact. The probe measures the current height value of the rivet and the position of the probe before and after the rivet is compressed. Based on the above detection method, the present invention realizes the effect of automatic detection of the product and improves the accuracy of detection.

[0023] 2. This detection method will not cause damage to the rivets or products. The piston rod on the cylinder only outputs a rated force. Even if the test fails, it will not cause damage to the product or the rivet itself, which is more conducive to recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a perspective view of the present invention.

[0025] Figure 2 It is a usage state diagram of the present invention.

[0026] Figure 3 This is a structural diagram of the storage backplane. DETAILED DESCRIPTION

[0027] Figure 1 A pressure detection device is shown. This pressure detection device is used in the entire production process and belongs to the detection process to test the tightness of the pins on the back plate 9 of each reservoir.

[0028] like Figure 1-2 As shown, this pressure detection device includes a base plate 1, and the base plate 1 has multiple connecting surfaces that intersect each other vertically; by respectively arranging a first linear moving mechanism 2 and a second linear moving mechanism 3 on two surfaces of the base plate 1, the activity directions of the first linear moving mechanism 2 and the second linear moving mechanism 3 intersect at an intersection point, the detection platform 4 is connected to the output end of the first linear moving mechanism, the positioning platform 8 is connected to the output end of the second linear moving mechanism 3, the detection platform 4 and the positioning platform 8 can be close to each other, the cylinder 5 and the sensor are arranged on the detection platform 4, the piston rod of the cylinder 5 and the probe of the sensor are respectively against the product on the positioning platform 8, and contact with the rivet in the product, and this sensor is a contact sensor 6, which is used to transmit data with the interaction center;

[0029] The new judgment method is based on the premise of sensor contact. The probe measures the current height value of the rivet and the position of the probe before and after the rivet is compressed. Based on the above detection method, the present invention achieves the effect of automatic detection of the product and improves the accuracy of detection. This detection method will not cause damage to the rivet or the product. The piston rod on the cylinder 5 only outputs a rated force. Even if the test fails, it will not cause damage to the product or the rivet itself, which is more conducive to recycling.

[0030] Furthermore, a pressing block 7 is provided on the detection platform 4 , and when the probe is squeezed and retracted, the pressing block 7 is kept in contact with the product; the purpose of using the pressing block 7 is to prevent the storage back plate 9 from shifting.

[0031] Furthermore, the pressing block 7 is adjacent to the contact sensor 6. During the test, the closer the positioning point is to the contact sensor 6, the more accurate the test result will be.

[0032] Furthermore, the positioning platform 8 is provided with an avoidance hole for the pin to pass through.

[0033] Furthermore, it also includes a first linear motion mechanism 2, which is composed of a first sliding component and a first drive motor, and the output end of the first drive motor is connected to the movable end of the first sliding component.

[0034] Furthermore, it also includes a second linear motion mechanism 3, which is composed of a second sliding component and a second drive motor, and the output end of the second drive motor is connected to the movable end of the second sliding component.

[0035] A pressure detection method:

[0036] S1, transporting the product on the positioning platform 8 to the moving path of the sensor through the first linear moving mechanism 2;

[0037] S2, the second linear moving mechanism 3 transports the sensor so that the sensor is positioned toward the product;

[0038] S3, the probe in the contact sensor 6 contacts the pin of the product, and the probe is retracted into the contact sensor 6, and the interactive center obtains the height value of the pin and the current position of the pin;

[0039] S3, the first linear moving mechanism 2 transports the product on the positioning platform 8 to the moving path of the cylinder 5, and repeats step S2 so that the piston rod of the cylinder 5 contacts the pin;

[0040] S4, cylinder 5 outputs a force of 50N to the pin and maintains the pressurization time for 2S;

[0041] S5, the first linear moving mechanism 2 transports the product on the positioning platform 8 to the moving path of the sensor, uses the probe to contact the pin again, and obtains the pressurized position of the pin through the interactive center;

[0042] S6, the interactive center, determines whether the looseness value is within the preset upper limit value by comparing the value before and after compression.

[0043] In this measurement method, not only the tightness of the pin is measured, but also the height of the pin is measured. This is because the height of the spindle in the contact sensor 6 will change from the moment the probe touches the rivet and when the probe is retracted. Based on this change in the spindle, the height of the pin can be measured.

[0044] Similarly, when testing the tightness of the pin, if the height difference between the main shaft before and after is outside the deviation value, the pin is judged to be loose.

[0045] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A pressure detection device for detecting the firmness of rivets on products, characterized in that: It includes a detection platform that performs reciprocating motion, and a positioning platform that performs reciprocating motion in another direction. The two reciprocating motion directions have an intersection, so that the cylinder and sensor provided on the detection platform, the piston rod of the cylinder and the probe of the sensor are respectively against the product on the positioning platform and contact with the rivets in the product. The sensor is a contact sensor, which is used to transmit data with the interaction center.

2. A pressure detection device according to claim 1, characterized in that: A pressing block is also provided on the detection platform, and when the probe is squeezed and retracted, the pressing block is kept in a state of contact with the product.

3. A pressure detection device according to claim 2, characterized in that: The pressure block is adjacent to the touch sensor.

4. A pressure detection device according to claim 1, characterized in that: The positioning platform is provided with an avoidance hole for the pin to pass through.

5. A pressure detection device according to claim 1, characterized in that: It also includes a first linear motion mechanism, which is composed of a first sliding component and a first driving motor, and the output end of the first driving motor is connected to the movable end of the first sliding component.

6. A pressure detection device according to claim 1, characterized in that: It also includes a second linear motion mechanism, which is composed of a second sliding component and a second drive motor, and the output end of the second drive motor is connected to the movable end of the second sliding component.

7. A pressure detection method: S1, transporting the product on the positioning platform to the moving path of the sensor through the first linear moving mechanism; S2, the second linear motion mechanism transports the sensor so that the sensor is positioned toward the product; S3, the probe in the contact sensor contacts the pin of the product and retracts into the contact sensor. The interactive center obtains the height value and current position of the pin. S3, a first linear moving mechanism, transports the product on the positioning platform to the moving path of the cylinder, and repeats step S2, so that the piston rod of the cylinder contacts the pin; S4, the cylinder outputs a force of 50N to the pin and maintains the pressurization time for 2S; S5, the first linear moving mechanism transports the product on the positioning platform to the moving path of the sensor, uses the probe to contact the pin again, and obtains the pressurized position of the pin through the interactive center; S6, the interactive center, determines whether the looseness value is within the preset upper limit value by comparing the value before and after compression.

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