Rivet pushing testing fixture

Abstract

The utility model discloses a rivet pushing testing fixture, which relates to the technical field of rivet detection and comprises an electric cabinet, and a first cylinder and a second cylinder are fixedly mounted on one side of the electric cabinet. Wherein the two second air cylinders are located on the two sides of the first air cylinder respectively, push rods of the second air cylinders and the U-shaped block are fixedly installed, and the I-shaped block is fixedly installed at the bottom of the U-shaped block. A probe is fixedly mounted on one side, far away from the U-shaped block, of the I-shaped block; an elastic contact of the contact switch is mounted on the inner side of the bottom of the probe in a matched manner; according to the utility model, the cavity of the probe is arranged above the rivet and is pushed according to a preset stroke, at the moment, the elastic contact is just attached to the upper end of the rivet, at the moment, the elastic contact is communicated with the fixed contact by taking the rivet as a carrier, and at the moment, the buzzer gives an alarm; the product is proved to be qualified; and when the probe finishes the preset travel, the buzzer does not respond, and the rivet length of the product is short, so that the product belongs to an unqualified product.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of rivet detection, and specifically is a push rivet inspection tool. Background Technique

[0002] During the assembly of the jig, rivets are required for fixation. The structure of the rivet is simple and can provide good connectivity, making the jig have high stability.

[0003] However, when the traditional jig is connected by rivets currently, it is unable to effectively ensure the detection of the length of the rivets. In this way, during assembly, the length of the rivets may be too long or too short. When the length of the rivet is too long, it will affect the aesthetics of the assembly. When the length of the rivet is too short, it will not be able to effectively connect and fix between the two jigs.

[0004] After retrieval, the Chinese patent application number CN202120727769.9 discloses a rivet detection jig for a notebook computer keyboard bracket; including a base, an elastic support column, a workpiece carrier plate, and a flip cover hinged on the base. The workpiece carrier plate is floatingly arranged on the base along the vertical direction through the elastic support column. The workpiece carrier plate includes a receiving groove for accommodating the workpiece to be detected and several detection through holes. The number and positions of the detection through holes correspond to the number and positions of the rivets on the workpiece to be detected. The flip cover is in a square frame structure. A pressing plate is rotatably connected in the middle of the flip cover along the front-rear direction. A limiting block for restricting the rotation angle of the pressing plate is arranged on the flip cover. The limiting block includes a V-shaped limiting part. Below the workpiece carrier plate, there are detection probes with the same number and corresponding positions as the detection through holes;

[0005] Although the structure in the above patent can realize the detection of rivets, the length of the rivets after riveting in the above patent cannot be effectively guaranteed. In this way, it may cause the length of the rivets to be too long, which will affect the subsequent assembly. When the length of the rivet is too short, the effect of riveting and fixing cannot be achieved;

[0006] In view of the above situation, we provide a push rivet inspection tool. In this device, the jig is fixed on the tooling table by the push rod of the first cylinder. The rivet to be detected is placed on the fixed contact installed on the tooling table. The elastic contacts are simultaneously driven by two second cylinders to move downward, so that the bottom of the elastic contact contacts the top of the rivet. Then, through the cooperation of the elastic contact and the fixed contact, the buzzer gives a prompt alarm. When the rivet is long, the pressure is displayed through the cooperation of the display screen and the pressure sensor, so as to facilitate the judgment of the staff. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a push rivet inspection tool. Two second cylinders drive an elastic contact to move downward, enabling the bottom of the elastic contact to contact the top of the rivet. Then, through the cooperation of the elastic contact and the fixed contact, the buzzer issues a prompt alarm. By the pressure magnitude displayed on the display screen, the length detection of the rivet is achieved, thereby realizing the three situations of standard, shorter, and longer rivet lengths, improving the detection effect, so as to solve the problems in the above background technology.

[0008] To achieve the above object, the present utility model provides the following technical solutions:

[0009] A push rivet inspection tool includes an electric control box. A first cylinder and a second cylinder are fixedly installed on one side of the electric control box. Among them, two second cylinders are provided and are respectively located on both sides of the first cylinder. The push rod of the second cylinder is fixedly installed with a U-shaped block, and an I-shaped block is fixedly installed at the bottom of the U-shaped block. A probe is fixedly installed on the side of the I-shaped block away from the U-shaped block. An elastic contact of a contact switch is fitted and installed inside the bottom of the probe. The push rod of the first cylinder effectively fixes the inspection tool on the tooling table, and then two second cylinders drive the elastic contact in the contact switch to move, realizing the mating connection between the elastic contact and the fixed contact.

[0010] The fixed contact of the contact switch is fixedly installed inside the tooling table. The elastic contact and the fixed contact are arranged in a separated manner and are respectively connected to the power supply module inside the electric control box.

[0011] As a further technical solution of the present utility model, the elastic contact and the fixed contact of the contact switch are respectively electrically connected to the power supply module and are also respectively connected to the buzzer.

[0012] As a further technical solution of the present utility model, a tooling table is arranged on one side of the electric control box, and an inspection tool is placed on the tooling table. Inside the electric control box, a reversing solenoid valve A, a reversing solenoid valve B, a control switch A, and a control switch B are arranged. The reversing solenoid valve A is connected to the first cylinder through an air pipe. The air inlet end of the reversing solenoid valve A is connected to the air source through an air pipe, and the reversing solenoid valve A is electrically connected to the control switch A. The reversing solenoid valve B is connected to the second cylinder through an air pipe. The air inlet end of the reversing solenoid valve B is connected to the air source through an air pipe, and the reversing solenoid valve B is electrically connected to the control switch B. The control switch A and the control switch B are both connected to the power supply module.

[0013] As a further technical solution of the present utility model, the buzzer is fixedly installed on the side wall of the electric control box; two display screens are arranged on the top of the electric control box; when the elastic contact and the fixed contact are connected through a rivet, the circuit is connected, and a sound is emitted through the buzzer to realize the detection of the rivet. The detected values are displayed through the pressure sensor and the display screen; the standard, too short and too long lengths of the rivet are respectively prompted through the pressure value displayed on the display screen, which is convenient for the staff to judge;

[0014] As a further technical solution of the present utility model, both of the two display screens are connected to the pressure sensor and the power supply module; the pressure applied on the pressure sensor is displayed in real time through the display screen, and the length of the rivet is judged to be too long according to the magnitude of the applied pressure;

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. In the present utility model, the cavity of the probe is placed above the rivet and pushed according to a predetermined stroke. At this time, the elastic contact just fits on the upper end of the rivet. At this time, the elastic contact uses the rivet as a carrier to connect with the fixed contact, and at this time the buzzer emits an alarm; it proves that the product is qualified;

[0017] 2. In the present utility model, when the probe has completed the predetermined stroke and the buzzer has no response, it proves that the length of the rivet of the product is short and it is an unqualified product;

[0018] 3. In the present utility model, when the length of the rivet is too long, the elastic contact deforms under the extrusion of the rivet and fits in the cavity of the probe. At this time, the pressure sensor will change after being pressed, and the display screen will display the pressure at this time; after the staff sees the pressure change, it can be proved that the length of the rivet is too long, and the detection should be terminated in time and the unqualified products should be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0020] Figure 2 is in the present utility model Figure 1 schematic diagram of another perspective.

[0021] Figure 3 is in the present utility model Figure 1 schematic diagram of the partial structure disassembled.

[0022] Figure 4 is in the present utility model Figure 3 disassembled schematic diagram.

[0023] Figure 5 is in the present utility model Figure 4Schematic diagram of the disassembly of the second cylinder.

[0024] Figure 6 is the circuit block diagram of the present utility model.

[0025] In the figure: 1 - display screen, 2 - electric control box, 21 - reversing solenoid valve 1, 23 - reversing solenoid valve 2, 22 - control switch 1, 24 - control switch 2, 3 - first cylinder, 4 - second cylinder, 5 - tooling table, 6 - U-shaped block, 7 - I-shaped block, 8 - probe, 9 - rivet, 10 - contact switch, 101 - elastic contact, 102 - fixed contact, 11 - inspection tool, 12 - buzzer. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-6 , in the embodiment of the present utility model, a rivet pushing inspection tool includes an electric control box 2, and a first cylinder 3 and a second cylinder 4 are fixedly installed on one side of the electric control box 2; wherein there are two second cylinders 4, and they are respectively located on both sides of the first cylinder 3. The push rod of the second cylinder 4 is fixedly installed with a U-shaped block 6, and an I-shaped block 7 is fixedly installed at the bottom of the U-shaped block 6; an inspection probe 8 is fixedly installed on one side of the I-shaped block 7 away from the U-shaped block 6; the elastic contact 101 of the contact switch 10 is fitted and installed inside the bottom of the inspection probe 8; the fixed contact 102 of the contact switch 10 is fixedly installed inside the tooling table 5;

[0028] Specifically, the elastic contact 101 and the fixed contact 102 of the contact switch 10 are respectively electrically connected to the power supply module and are also respectively connected to the buzzer 12;

[0029] By adopting the above technical solution, when in use, first install the fixed contact 102 in the contact switch 10 on the tooling table 5 and connect it to the power supply module, place the inspection tool 11 on the tooling table 5, place the rivet 9 on the fixed contact 102 and penetrate the inspection tool 11, and then detect the rivet by contacting the top of the rivet with the bottom of the elastic contact 101; when the fixed contact 102 and the elastic contact 101 are connected, the buzzer 12 gives an alarm.

[0030] Specifically, the inspection probe 8 is arranged in a conical shape and has a cavity in the middle for facilitating the installation of the elastic contact 101.

[0031] As a further introduction to this embodiment:

[0032] When detecting the length of the rivet of the product, a reference rivet with a length of 5 cm is used as a standard test piece, and the stroke of the second cylinder 4 is set to 5 cm. After the cylinder rod of the second cylinder 4 extends out, the cavity of the probe 8 is placed above the rivet and pushed according to a predetermined stroke. At this time, the elastic contact 101 just fits on the upper end of the rivet. At this time, the elastic contact 101 uses the rivet as a carrier and is connected to the fixed contact 102. At this time, the buzzer 12 emits an alarm, indicating that the product is qualified. When the probe 8 has completed the predetermined stroke and the buzzer 12 does not respond, it proves that the length of the rivet of the product is short and it is an unqualified product.

[0033] A tooling table 5 is arranged on one side of the electric control box 2, and a measuring tool 11 is placed on the tooling table 5. Inside the electric control box 2, there are a reversing solenoid valve A21, a reversing solenoid valve B23, a control switch A22 and a control switch B24. The reversing solenoid valve A21 is connected to the first cylinder 3 through an air pipe. The air inlet end of the reversing solenoid valve A21 is connected to the air source through an air pipe, and the reversing solenoid valve A21 is electrically connected to the control switch A22. The reversing solenoid valve B23 is connected to the second cylinder 4 through an air pipe. The air inlet end of the reversing solenoid valve B23 is connected to the air source through an air pipe, and the reversing solenoid valve B23 is electrically connected to the control switch B24. Both the control switch A22 and the control switch B24 are connected to the power supply module. Different cylinders are controlled to meet different working requirements.

[0034] The buzzer 12 is fixedly installed on the side wall of the electric control box 2. Two display screens 1 are arranged on the top of the electric control box 2. When the elastic contact 101 and the fixed contact 102 are closed, the connected buzzer 12 emits a sound to realize the detection of the rivet.

[0035] Furthermore, the two display screens 1 are respectively connected to the two pressure sensors and are connected to the power supply module through wires. The power supply module supplies power to the display screen and the pressure sensor.

[0036] As a further explanation of this embodiment, when the rivet on the product exceeds the standard length, when it is pushed according to the predetermined stroke, the elastic contact 101 fits on the upper end of the rivet. However, due to the excessive length of the rivet, the elastic contact 101 deforms at this time and fits in the cavity of the probe 8. At this time, the pressure sensor will change after being pressed, and the display screen will display the pressure at this time. After the staff sees the pressure change, it can prove that the length of the rivet is too long, and the detection should be terminated in time and the unqualified products should be removed.

[0037] The working principle of the present utility model is as follows: When in use, first place the workpiece or product on the inspection fixture 11, and the cylinder rod of the first cylinder extends to fix the product to the inspection fixture 11.

[0038] When detecting the length of the rivet of the product, a reference rivet with a length of 5 cm is used as a standard test piece, and the stroke of the second cylinder 4 is set to 5 cm. After the cylinder rod of the second cylinder 4 extends, the cavity of the probe 8 is placed above the rivet and pushed according to a predetermined stroke. At this time, the elastic contact 101 just fits on the upper end of the rivet. At this time, the elastic contact 101 uses the rivet as a carrier to connect with the fixed contact 102, and at this time the buzzer 12 gives an alarm, proving that the product is qualified. When the probe 8 has completed the predetermined stroke and the buzzer 12 has no response, it proves that the length of the rivet of the product is short and it is an unqualified product.

[0039] When the length of the rivet is too long, it is impossible to accurately detect whether the length of the rivet is too long. Therefore, we have set a pressure sensor and a display screen 1. When pushing according to the predetermined stroke, the elastic contact 101 fits on the upper end of the rivet. However, due to the too long length of the rivet, the elastic contact 101 deforms at this time. After the pressure sensor presses on the rivet, its pressure gradually increases. The pressure sensor will transmit the pressure sensing information to the main control board (not shown in the figure), and the main control board will convert the electrical signal into a digital signal and display it on the display screen 1 (detecting through the pressure sensor and displaying through the display screen belong to the prior art, for example: electronic scale; so the specific circuit system will not be elaborated here).

[0040] After the staff sees the pressure change, it can prove that the length of the rivet is too long, and the detection should be terminated in time and the unqualified products should be removed.

[0041] The contact switches 10 at the bottoms of the two second cylinders 4 respectively correspond to one display screen 1. In this way, during the detection, the simultaneous detection of two rivets can be effectively realized, greatly improving the work efficiency.

[0042] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A push rivet inspection tool, characterized in that: The invention comprises an electric control box (2), wherein a first cylinder (3) and a second cylinder (4) are fixedly mounted on one side of the electric control box (2); wherein two second cylinders (4) are provided and are respectively located on both sides of the first cylinder (3); a push rod of the second cylinder (4) is fixedly mounted on a U-shaped block (6); an I-shaped block (7) is fixedly mounted on the bottom of the U-shaped block (6); a probe (8) is fixedly mounted on the side of the I-shaped block (7) away from the U-shaped block (6); and an elastic contact (101) of a contact switch (10) is cooperatively mounted on the inner side of the bottom of the probe (8); The fixed contact (102) of the contact switch (10) is fixedly installed inside the tooling table (5).

2. A push rivet inspection tool according to claim 1, characterized in that: The elastic contact (101) and the fixed contact (102) of the contact switch (10) are respectively electrically connected to the power module, and are also respectively connected to the buzzer (12).

3. A push rivet inspection tool according to claim 1, characterized in that: A tooling table (5) is provided on one side of the electric control box (2), wherein a check fixture (11) is placed on the tooling table (5); a reversing solenoid valve A (21), a reversing solenoid valve B (23), a control switch A (22) and a control switch B (24) are provided inside the electric control box (2); the reversing solenoid valve A (21) is connected to the first cylinder (3) through an air pipe; an air inlet end of the reversing solenoid valve A (21) is connected to an air source through an air pipe, and the reversing solenoid valve A (21) is electrically connected to the control switch A (22); the reversing solenoid valve B (23) is connected to the second cylinder (4) through an air pipe; an air inlet end of the reversing solenoid valve B (23) is connected to an air source through an air pipe, and the reversing solenoid valve B (23) is electrically connected to the control switch B (24); the control switch A (22) and the control switch B (24) are both connected to a power module.

4. A push rivet inspection tool according to claim 2, characterized in that; The buzzer (12) is fixedly mounted on the side wall of the electric control box (2); and two display screens (1) are arranged on the top of the electric control box (2).

5. A push rivet inspection tool according to claim 4, characterized in that: The two display screens (1) are both connected to a pressure sensor and a power module.

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