Resistance test clamp of temperature sensor

Abstract

The utility model relates to a resistance test fixture of a temperature sensor, which comprises a positioning seat plate, a plurality of rows of plugging positions for the temperature sensor are distributed on the positioning seat plate, the front side of each row of plugging positions is respectively provided with an accommodating groove, and a plugging position number is arranged beside each plugging position; the bottom of the positioning seat plate is provided with at least two conveying line friction strips, positioning supporting blocks and positioning pin sleeves, the two conveying line friction strips are arranged on the two side portions of the positioning seat plate respectively, the multiple positioning supporting blocks are arranged on the edge portions of the two sides of the positioning seat plate respectively, and the positioning pin sleeves are arranged on the two side edge portions of the positioning seat plate respectively. The number of the positioning pin sleeves is at least two, the positioning pin sleeves are arranged on the edge portions of the two sides of the positioning base plate respectively, and grabbing positioning blocks used for grabbing in a matched mode are arranged on the edge portions of the two sides of the upper surface of the positioning base plate respectively. The test fixture provided by the utility model can realize the automation of the test process, saves manpower, can test a large number of temperature sensors at one time, and obviously improves the test efficiency.

Description

Technical Field

[0001] The utility model relates to the field of test fixtures, in particular to a resistance test fixture for a temperature sensor. Background Art

[0002] When conducting quality inspection on the temperature sensor, the temperature sensor should be fixed on the fixture, and the fixture should be grabbed by the clamping claw transfer mechanism. The temperature sensor should be placed in a constant temperature water tank with different temperatures to test its resistance. After the test is completed, the fixture should be grabbed by the clamping claw transfer mechanism and the temperature sensor should be taken out of the water tank. The temperature sensor in the prior art is usually detected by heating with an electric heating plate. For example, the patent document with publication number CN211042537U discloses a fixture for processing and detecting a temperature sensor, which includes a base, a display group is installed on one side of the base, and a display connector is evenly installed on one side of the upper end face of the base, and each display connector corresponds to a display, a lower clamping block is welded and fixed to the upper end face of the base, lower clamping plates are welded at both ends of the lower clamping block, an upper clamping block is correspondingly installed on the lower clamping block, upper clamping plates are welded at both ends of the upper clamping block, and each upper clamping plate is connected and fixed to the lower clamping plate by a T-shaped threaded rod, and slide rails are installed and fixed on both sides of the base, a dovetail slider is slidably fitted in the slide groove of each slide rail, and a constant temperature electric heating plate is installed between the two dovetail sliders. The disadvantage of this solution is that although multiple temperature sensors can be detected at one time, this fixture needs to clamp and position the temperature sensor through the upper clamping block, lower clamping block, upper clamping plate and lower clamping plate. When fixing the temperature sensor to the fixture, it is necessary to manually install the temperature sensor between the upper clamping plate and the lower clamping plate, and then connect each temperature sensor to the display connector. The loading of the temperature sensor is cumbersome and the operation efficiency is low. Moreover, when performing the test, it is necessary to heat it through an electric heating device and display the test results of the temperature sensor through the display, so the detection efficiency is low. Utility Model Content

[0003] The purpose of the present utility model is to provide a resistance test fixture for a temperature sensor that can solve the problems of the existing temperature sensor test fixture described in the background technology, such as cumbersome loading of the temperature sensor, low operating efficiency, and low detection efficiency during detection.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a resistance testing fixture for a temperature sensor, comprising a positioning base plate, on which are distributed multiple rows of plug-in positions for temperature sensors, a receiving groove is provided on the front side of each row of plug-in positions, and a plug-in position number is provided next to each plug-in position; a conveyor line friction strip, a positioning support block and a positioning pin sleeve are provided at the bottom of the positioning base plate, the conveyor line friction strips include at least two, and the two conveyor line friction strips are respectively arranged on both sides of the positioning base plate, the positioning support block includes multiple blocks, and the multiple positioning support blocks are respectively arranged on both side edges of the positioning base plate, the positioning pin sleeves include at least two, and the positioning pin sleeves are respectively arranged on both side edges of the positioning base plate, and grabbing positioning blocks for cooperating in grabbing are respectively provided on both side edges of the positioning base plate.

[0005] In the above embodiment, a through-hole is provided in the middle of the insertion position, and a groove is provided at the upper opening of the through-hole, which is connected to the receiving slot on one side. Through this arrangement, the temperature sensor to be tested can be inserted into the through-hole, and the groove is used to position the temperature sensor. The groove is connected to the receiving slot on the side facing the receiving slot, allowing the positioning claw of the temperature sensor to extend into the receiving slot.

[0006] In the above solution, the conveyor line friction strip includes a friction plate and a connecting block. The connecting block is positioned between the base plate and the positioning base plate, and the friction plate and connecting block are fixedly connected to the positioning base plate. This arrangement creates a certain gap between the friction strip and the positioning base plate, so that when the temperature sensor is plugged into the insertion point on the positioning base plate, the lower end of the temperature sensor is located above the friction plate, preventing damage to the temperature sensor.

[0007] In the above embodiment, the friction plate is provided with a clearance hole opposite to the insertion position. With this arrangement, when a temperature sensor is inserted into the insertion position at the edge, the lower end of the temperature sensor extends into the clearance hole, ensuring smooth insertion of the temperature sensor while also protecting the lower end of the temperature sensor near the edge.

[0008] In the above solution, the positioning support block is an L-shaped positioning support block, which is fixedly connected to the lower surface of the positioning base plate. The thickness of the positioning support block is adapted to the thickness of the conveyor line friction strip. Through this arrangement, the positioning support block can protect the lower end of the temperature sensor, leaving the lower end of the temperature sensor suspended in the air. The positioning support block is designed to be L-shaped. When the test fixture is placed in the constant temperature water tank, the three L-shaped edges of the positioning support block can position the test fixture in the left and right directions and the front and back directions. This not only fixes the test position of the test fixture in the constant temperature water tank, but also makes the positioning of the test fixture in the constant temperature water tank more stable, preventing the test fixture from shaking in the constant temperature water tank during testing.

[0009] In the above solution, the locating pin sleeve is fixedly attached to the lower surface of the locating base plate, and a vertical locating hole is provided in the middle of the locating pin sleeve. With this arrangement, when the test fixture is transported on the double-speed chain conveyor line and reaches the loading position, the locating pin on the lifting mechanism inserts into the locating pin sleeve, lifting and positioning the test fixture, thereby facilitating the loading of the temperature sensor to be tested onto the test fixture.

[0010] In the above solution, the grabbing and positioning block is an elongated strip with a positioning hole and a positioning groove on its outer surface. With this arrangement, when the test fixture is grasped by the gripping and positioning mechanism, the positioning posts on the gripping and positioning mechanism can be inserted into the positioning holes to position the gripping process. When the gripping and positioning jaws are lowered to the positions on both sides of the grabbing and positioning block, the gripping jaws are moved toward the test fixture and into the positioning grooves on the outer surface of the gripping and positioning block, completing the gripping of the test fixture.

[0011] In the above solution, positioning holes are respectively provided on the two side edges of the positioning seat plate, and anti-collision blocks are provided on the outer sides of the two side edges. By providing positioning holes on the two side edges of the positioning seat plate, the positioning seat plate can be positioned and the positioning accuracy can be improved.

[0012] In the above solution, a stop cylinder contact block is further provided at the bottom of the positioning base plate, fixedly connected to one side edge of the positioning base plate. By providing the stop cylinder contact block, after completing a temperature sensor test, the test fixture can be transported to the loading position via the double-speed chain conveyor line. When transported to the desired position, the stop cylinder contact block can trigger the stop cylinder, causing the test fixture to stop at the predetermined loading position.

[0013] In the above solution, a connecting strip is provided in the middle of the positioning seat plate, and the connecting strip is arranged along the front-back direction of the positioning seat plate. By providing the connecting strip, a connection and support can be formed in the middle of the positioning seat plate, thereby enhancing its strength and preventing deformation of the positioning seat plate.

[0014] The utility model has positive effects: 1) The resistance test fixture of the practical temperature sensor has a simple structure and a light overall weight, which is convenient for grabbing and moving the test fixture; 2) The resistance test fixture of the practical temperature sensor can load a large number of temperature sensors on the positioning base plate, can perform batch testing of temperature sensors, and improve the testing efficiency of temperature sensors; 3) The resistance test fixture of the practical temperature sensor has a number on each plug-in position. After the temperature sensor test is completed, the staff can quickly find the temperature sensor with a problem, and improve the screening efficiency of qualified and defective products; 4) The resistance test fixture of the practical temperature sensor can be used in conjunction with the clamping claw transplanting mechanism to realize the automated operation of the temperature sensor testing process, improve the detection efficiency, and reduce labor consumption. 4) The resistance test fixture of the practical temperature sensor can be made of anti-corrosion materials such as aluminum alloy and plastic, and can be immersed in a constant temperature water tank as a whole for use, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the test fixture of the present utility model.

[0016] Figure 2 The figure is a schematic diagram of the structure after a temperature sensor is plugged into the test fixture of the utility model.

[0017] FIG3 is a schematic diagram of the bottom structure of the test fixture of the present invention.

[0018] FIG4 is a schematic structural diagram of a temperature sensor plugged into a test fixture of the present invention.

[0019] The accompanying drawings are marked as follows: positioning seat plate 1, plug-in position 11, accommodating groove 12, plug-in through hole 13, groove 14, plug-in position number 15, positioning hole 16, connecting strip 17, anti-collision block 18, temperature sensor 2, positioning claw 21, conveyor line friction strip 3, friction plate 31, connecting block 32, give way hole 33, positioning support block 4, positioning pin sleeve 5, grabbing positioning block 6, positioning hole 61, positioning groove 62, stop cylinder contact block 7. DETAILED DESCRIPTION

[0020] The following examples clearly and completely describe the technical solutions of the present invention. Obviously, the examples described are only a portion of the embodiments of the present invention, not all of them. Based on the examples of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 A resistance test fixture for a temperature sensor shown in Figure 3 includes a positioning base plate.

[0022] The positioning seat plate can be an integrally formed positioning seat plate made of aluminum alloy.

[0023] The middle part of the positioning base plate is provided with multiple rows of plug-in positions for temperature sensors, and each row of plug-in positions may include multiple plug-in positions, such as the attached Figure 1 As shown, there are 5 rows of plug-in positions on the positioning base plate, each row of plug-in positions includes 8 plug-in positions, so there are 40 plug-in positions on the positioning base plate.

[0024] A receiving groove is provided on the front side of each row of plug-in positions. The receiving groove is a rectangular receiving groove. The width of the receiving groove is adapted to the size of the positioning claw on the side wall of the temperature sensor to be measured. When the temperature sensor to be measured is inserted into the plug-in position, the positioning claw on the side wall of the temperature sensor is located in the receiving groove.

[0025] A through-hole is provided in the middle of each insertion position, and a groove is provided at the upper opening of the through-hole. The groove is connected to the receiving slot on the side facing the receiving slot. Through this arrangement, the temperature sensor to be tested can be inserted into the through-hole, and the insertion of the temperature sensor is positioned by the groove. The groove is connected to the receiving slot on the side facing the receiving slot, allowing the positioning claw of the temperature sensor to extend into the receiving slot, preventing the positioning claw from affecting the insertion and positioning of the temperature sensor.

[0026] Each plug-in position is provided with a plug-in position number. The plug-in position number can be set beside each plug-in position, preferably at a raised portion between adjacent plug-in positions, such as the attached Figure 1 As shown, the plug-in position number is set on the left raised part of each plug-in position.

[0027] A conveyor line friction strip, a positioning support block and a positioning pin sleeve are arranged at the bottom of the positioning seat plate.

[0028] The conveyor line friction strips include at least two, as shown in the attached Figure 2 As shown, a conveyor line friction strip is respectively provided on the front side and the rear side of the bottom of the positioning seat plate, and the two conveyor line friction strips are both arranged along the left and right directions.

[0029] The conveyor line friction strip consists of a friction plate and a connecting block. The connecting block is positioned between the base plate and the positioning base plate. The friction plate and connecting block are fixedly connected to the positioning base plate. This arrangement creates a certain gap between the friction strip and the positioning base plate. When the temperature sensor is plugged into the positioning base plate, the lower end of the temperature sensor is located above the friction plate, preventing damage to the temperature sensor.

[0030] The friction plate and the connecting block can be made of wear-resistant plastic. For example, the friction plate and the connecting block can be made of high-density polyethylene (HDPE) material. The friction plate and the connecting block can be formed in one piece. Connecting holes are provided at corresponding positions on the connecting block and the friction plate, and threaded holes are provided at corresponding positions on the positioning base plate. The conveyor line friction strip is fixedly connected to the positioning base plate by screws.

[0031] The friction plate is provided with a clearance hole opposite to the plug-in position. With this arrangement, when the temperature sensor is plugged into the plug-in position at the edge, the lower end of the temperature sensor extends into the clearance hole, which not only ensures smooth insertion of the temperature sensor but also protects the lower end of the temperature sensor near the edge.

[0032] The positioning support blocks include multiple blocks, which are respectively arranged on the edge portions of both sides of the positioning seat plate. The positioning support blocks can be made of corrosion-resistant materials, such as stainless steel.

[0033] The L-shaped positioning support block is fixedly attached to the lower surface of the positioning base plate. The thickness of the positioning support block matches the thickness of the conveyor line friction strip. This arrangement protects the lower end of the temperature sensor, leaving it suspended in the air. The L-shaped positioning support block allows the three L-shaped edges of the positioning support block to position the test fixture left and right and front and back when the test fixture is placed in the constant temperature water tank. This not only secures the test fixture in its test position in the constant temperature water tank, but also ensures a more stable positioning of the test fixture within the constant temperature water tank, preventing it from shaking during testing.

[0034] At least two locating pin sleeves are located on either side of the locating base plate and are fixedly attached to the lower surface of the base plate. A vertical locating hole is defined in the center of each locating pin sleeve. This arrangement allows the test fixture to be transported along the double-speed chain conveyor line. When the test fixture reaches the loading position, the locating pins on the lifting mechanism insert into the locating pin sleeves, lifting the test fixture into position and facilitating the loading of the temperature sensor to be tested.

[0035] Grab and hold blocks for gripping are located on both sides of the top surface of the positioning base plate. These blocks are elongated and feature positioning holes and positioning slots on their outer surfaces. This arrangement allows the gripper transfer mechanism to grasp the test fixture, inserting the positioning posts into the holes to position the gripper. Once the gripper has descended to either side of the grab and hold blocks, it moves toward the test fixture until it enters the positioning slots on the outer surfaces of the gripper transfer blocks, completing the gripping of the test fixture.

[0036] Positioning holes can be provided on both side edges of the positioning seat plate, and anti-collision blocks can be provided on the outer sides of the two side edges. The anti-collision blocks can be made of polyurethane. By providing positioning holes on both side edges of the positioning seat plate, the positioning seat plate can be positioned to improve positioning accuracy.

[0037] A stop cylinder contact block is also installed at the bottom of the positioning base plate, fixedly connected to one side edge of the positioning base plate. By installing the stop cylinder contact block, after completing a temperature sensor test, the test fixture can be transported to the loading position via the double-speed chain conveyor line. When it is transported to the desired position, the stop cylinder contact block triggers the stop cylinder, stopping the test fixture at the predetermined loading position.

[0038] A connecting strip is also provided in the middle of the positioning plate, running along its front-to-back direction. The number of connecting strips can be adjusted as needed. As shown in Figure 1, one connecting strip is provided on the positioning plate. This provides a connection and support in the middle of the positioning plate, enhancing its strength and preventing deformation.

[0039] The resistance test fixture of the temperature sensor of the present invention is used. When the test fixture is moved to the loading position by the double-speed chain conveyor line, after it is moved to the position, the stop cylinder contact block can trigger the stop cylinder to stop the test fixture at the predetermined loading position, and then the positioning pin on the jacking device is inserted into the positioning pin sleeve at the bottom of the positioning seat plate, driving the test fixture to rise and position the test fixture. At this time, the temperature sensor to be tested can be inserted into the plug-in through-holes of each plug-in position on the positioning seat plate. When plugging in, the positioning claws of the temperature sensor face the container. One side of the receiving slot is provided so that the positioning claw is accommodated in the receiving slot. When the loading of the temperature sensor is completed, the lifting mechanism descends, so that the test fixture descends to the double-speed chain conveyor line, and the test fixture is transported by the double-speed chain conveyor line. When it is transported to the grabbing position of the clamping claw transfer mechanism, the test fixture is grabbed by the clamping claw transfer mechanism. When grabbing, the clamping claw of the clamping claw transfer mechanism descends, and the positioning column on the clamping claw transfer mechanism can be inserted into the positioning hole to position the grabbing process. When the clamping claw descends to the positions on both sides of the grabbing positioning block, the clamping claw moves toward the test fixture. Until the clamp moves into the positioning groove on the outer surface of the clamp positioning block, the test fixture can be grabbed, and then the test fixture is moved to the test position in the constant temperature water tank, so that the temperature sensor to be tested is immersed in water, and then the lifting mechanism on the constant temperature water tank drives the test plate equipped with the plug connector to descend, so that the various plug connectors on the test board are respectively inserted into the plug interfaces on the top of each temperature sensor to be tested on the test fixture, and water can be added to the constant temperature water tank to test the temperature sensor; after the test is completed, the water in the constant temperature water tank is drained first, and then the lifting mechanism drives the test plate to rise to the initial position, and then the test fixture is grabbed by the clamp transferring mechanism, and the test fixture is moved to the unloading position to complete the unloading. During unloading, the temperature sensor with problems can be quickly found by the number on the test fixture, so that the temperature sensor with problems can be screened. After unloading is completed, the test fixture is moved to the double-speed chain conveyor line by the clamp transferring mechanism, and the test fixture is moved to the loading position by the double-speed chain conveyor line. The above process is repeated to test the next batch of temperature sensors again.

[0040] The resistance test fixture of the temperature sensor of the present invention can detect the temperature sensor through a constant temperature water tank, thereby simplifying the structure of the test fixture, greatly reducing its weight, greatly increasing the number of temperature sensors that can be loaded, and improving the detection efficiency of the temperature sensor. A large number of temperature sensors can be tested at one time through the constant temperature water tank. For example, the embodiment shown in the accompanying drawings can test 40 temperature sensors at one time, thereby improving the detection efficiency. In addition, the use of a constant temperature water tank for detection can also improve the accuracy of detection.

[0041] The resistance test fixture of the temperature sensor of the present invention is numbered on each plug-in position. During testing, the number of the temperature sensor with problems can be recorded. During unloading, the temperature sensor with problems can be quickly found by the number, so as to facilitate the separation of qualified products from defective products.

[0042] The resistance test fixture of the temperature sensor of the utility model is easy to automatically operate through automatic double-speed chain conveyor line, clamping claw transplanting mechanism, jacking mechanism and other equipment, so as to realize automation of the test process, save manpower and improve test efficiency.

[0043] The resistance test fixture of the temperature sensor of the present invention can be made of materials such as stainless steel, plastic, and aluminum alloy. It has good corrosion resistance, high strength and wear resistance, so that it can be reused and has a long service life.

[0044] 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 variations may be made to these embodiments without departing from the scope and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A resistance test fixture for a temperature sensor, characterized by: It includes a positioning base plate, on which are distributed multiple rows of plug-in positions for temperature sensors, an accommodating groove is provided on the front side of each row of plug-in positions, and a plug-in position number is provided next to each plug-in position; a conveyor line friction strip, a positioning support block and a positioning pin sleeve are provided at the bottom of the positioning base plate, the conveyor line friction strips include at least two, and the two conveyor line friction strips are respectively arranged on both sides of the positioning base plate, the positioning support block includes multiple blocks, and the multiple positioning support blocks are respectively arranged on both side edges of the positioning base plate, the positioning pin sleeves include at least two, and the positioning pin sleeves are respectively arranged on both side edges of the positioning base plate, and grabbing positioning blocks for cooperating in grabbing are respectively provided on both side edges of the positioning base plate.

2. The resistance test fixture for a temperature sensor according to claim 1, characterized in that: A plug-in through hole is provided in the middle of the plug-in position, and a groove is provided at the upper opening of the plug-in through hole, and the groove is connected with the accommodating groove toward one side of the accommodating groove.

3. The resistance test fixture for a temperature sensor according to claim 1, wherein: The conveyor line friction strip includes a friction plate and a connecting block. The connecting block is arranged between the bottom plate and the positioning seat plate. The friction plate and the connecting block are fixedly connected to the positioning seat plate.

4. The resistance test fixture for a temperature sensor according to claim 3, wherein: The friction plate is provided with a clearance hole opposite to the plug-in position.

5. The resistance test fixture for a temperature sensor according to claim 1, wherein: The positioning support block is an L-shaped positioning support block, which is fixedly connected to the lower surface of the positioning seat plate. The thickness of the positioning support block is adapted to the thickness of the friction strip of the conveyor line.

6. The resistance test fixture for a temperature sensor according to claim 1, wherein: The positioning pin sleeve is fixedly connected to the lower surface of the positioning seat plate, and a vertical positioning hole is provided in the middle of the positioning pin sleeve.

7. The resistance test fixture for a temperature sensor according to claim 1, characterized in that: The grabbing and positioning block is a long strip-shaped grabbing and positioning block. A positioning hole is provided on the grabbing and positioning block, and a positioning groove is provided on the outer side surface of the grabbing and positioning block.

8. The resistance test fixture for a temperature sensor according to claim 1, wherein: Positioning holes are respectively provided on the edge portions on both sides of the positioning seat plate, and anti-collision blocks are provided on the outer sides of the edge portions on both sides.

9. The resistance test fixture for a temperature sensor according to claim 1, characterized in that: A stop cylinder contact block is further provided at the bottom of the positioning seat plate, and the stop cylinder contact block is fixedly connected to an edge portion of one side of the positioning seat plate.

10. The resistance test fixture of the temperature sensor according to claim 1, characterized in that: A connecting strip is provided in the middle of the positioning seat plate, and the connecting strip is arranged along the front-to-back direction of the positioning seat plate.

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