Transmission type detection device

Abstract

The utility model relates to a transmission type detection device, which comprises a cylindrical shell, a sensor and a transmitter, the cylindrical shell is provided with a cavity with two open ends, the sensor is inserted into the first end of the cavity, the sensing head of the sensor faces the second end of the cavity, and the transmitter is provided with a sensing end and a limiting end. The sensing end is inserted into the second end of the cavity, and the transmitter is movably connected with the barrel shell; when the limiting end abuts against the port of the second end, a gap exists between the sensing end and the sensing head, and the gap is smaller than the sensing range of the sensing head. Compared with the prior art, the transmission type detection device provided by the utility model changes the existing mode that a workpiece is directly detected by an inductor, the workpiece is in contact with the transmitter and pushes the transmitter to move, the inductor detects the transmitter and equivalently detects the workpiece, and the workpiece can be accurately detected by utilizing the abutting limiting between the limiting end and the port of the second end. The gap between the sensing end and the sensing head is ensured, and the gap is smaller than the sensing range of the sensing head, so that the sensing end can be detected, and the sensor cannot be damaged by collision.

Description

Technical Field

[0001] The utility model relates to the field of detection technology, in particular to a transfer type detection device. Background Art

[0002] In the automotive welding process, leak prevention of screws and studs on automotive parts has been widely used in automated welding equipment. The current traditional sensing method for stud leak detection is that the sensor directly senses the stud, that is, the sensor is moved near the stud so that the distance between the stud and the sensor is smaller than the sensing range of the sensor. If the sensor detects the stud, it proves that there is no leaking welding. On the contrary, if the stud is not detected, it means that the stud is leaking welding.

[0003] Since the sensing range of the sensor is very small, generally only 1-2mm, it is necessary to move the sensor accurately. If the distance between the sensor and the stud is too large, the stud will not be detected, resulting in a false alarm. If the sensor directly contacts the stud, it will be damaged.

[0004] The mechanism that drives the sensor cannot guarantee movement accuracy during long-term operation, resulting in frequent false alarms and sensor damage. Utility Model Content

[0005] In view of this, it is necessary to provide a transfer detection device to solve the technical problem in the prior art that the sensor for detecting whether the stud is leaking has high movement accuracy requirements and is prone to accidentally touching the bolt and causing damage to the sensor.

[0006] The utility model provides a transmission type detection device, which comprises: a cylinder shell, a sensor and a transmitter, the cylinder shell has a cavity with two ends open, the sensor is inserted into the first end of the cavity and the sensing head of the sensor faces the second end of the cavity, the transmitter has a sensing end and a limiting end, the sensing end is inserted into the second end of the cavity and the transmitter is movably connected with the cylinder shell; when the limiting end abuts against a port at the second end, there is a gap between the sensing end and the sensing head, and the gap is smaller than the sensing range of the sensing head.

[0007] Furthermore, the transmitter also has a limit block, which is located between the sensing end and the limit end, and the port at the second end is located between the limit end and the limit block; when the transmitter moves along the cavity, the two sides of the port at the second end can respectively abut the limit end and the limit block.

[0008] Furthermore, the cartridge shell includes a sleeve and a cap, the sleeve has a cavity inside, the cap is detachably connected to one end of the sleeve, and the cap has a through hole connected to the cavity to form a second end of the cavity; the cap is located between the limit end and the limit block.

[0009] Furthermore, the transmitter includes an end cover and a transmission rod, the end cover is detachably connected to one end of the transmission rod, the end cover has a limiting end, the end of the transmission rod away from the end cover is a sensing end, and the middle of the transmission rod has a limiting block.

[0010] Furthermore, one end of the end cover is threadedly connected to the transmission rod, and the other end extends radially outward to form a limiting end.

[0011] Furthermore, it also includes an elastic member, which has elastic force so that the limiting block abuts against the cover cap.

[0012] Furthermore, the inner wall of the sleeve extends radially inward to form a protrusion, the sensor is located on one side of the protrusion, the limit block is located on the other side of the protrusion, and the transfer rod can pass through the protrusion and move toward the sensor; the elastic member is a spring, the spring is sleeved on the transfer rod and the two ends respectively abut the limit block and the protrusion.

[0013] Furthermore, the distance between the sensing head and the protrusion is greater than the distance between the end cover and the cover cap.

[0014] Furthermore, it also includes a buffer sleeve, which is arranged between the sensor head and the protrusion and has elasticity.

[0015] Furthermore, it also includes a protective cover, which is arranged outside the sensor.

[0016] Compared with the prior art, the transfer-type detection device provided by the utility model changes the existing way in which the sensor directly detects the workpiece. The workpiece contacts the transmitter and pushes the transmitter to move. The sensor detects the transmitter equivalently to the workpiece. The abutment limit of the limit end and the second end port is utilized to ensure that there is a gap between the sensing end and the sensing head, and the gap is smaller than the sensing range of the sensing head. The sensing end can be detected without damaging the sensor.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiment of the utility model is described in detail as follows with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of a transfer-type detection device provided by the utility model;

[0020] Figure 2This is a cross-sectional view of the transfer-type detection device provided by the utility model. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0022] See also Figure 1 and Figure 2 The utility model provides a transfer-type detection device. The transfer-type detection device can be applied to the leakage detection of bolts, and can also be applied to the leakage detection of other workpieces. The principle of the leakage detection of other workpieces is substantially the same as the principle of the leakage detection of bolts, and will not be described in detail here.

[0023] The transmission detection device includes a cylindrical shell 1, a sensor 2 and a transmitter 3. The cylindrical shell 1 has a cavity with two ends open. The sensor 2 is inserted into the first end of the cavity and the sensing head of the sensor 2 faces the second end of the cavity. The transmitter 3 has a sensing end 301 and a limiting end 302. The sensing end 301 is inserted into the second end of the cavity and the transmitter 3 is movably connected to the cylindrical shell 1. When the limiting end 302 abuts against the port of the second end, there is a gap between the sensing end 301 and the sensing head, and the gap is smaller than the sensing range of the sensing head, so that the sensor 2 can detect. The gap can be flexibly controlled according to the actual situation of the sensor 2, for example, 1 mm is used.

[0024] This transfer-type detection device changes the existing way of directly detecting the workpiece by the sensor. The workpiece is in contact with the transmitter 3 and pushes the transmitter 3 to move toward the sensor 2. The sensor 2 detects the sensing end 301 and equivalently detects the workpiece. The abutment limit of the limit end 302 and the second end port ensures that there is a gap between the sensing end 301 and the sensing head, and the gap is smaller than the sensing range of the sensing head. In this way, the sensing end 301 can be detected without damaging the sensor 2. In actual use, in order to ensure that the workpiece can push the transmitter 3 into place, that is, into the detection range of the sensor 2, the movement stroke of the driving mechanism that drives the detection device toward the workpiece during the transfer can be slightly larger, and at the same time, springs and other shock-absorbing devices are used to make the workpiece push the transmitter 3 to fully move until the limit end 302 contacts the second end and stops, so as to ensure that the sensing end 301 reaches the monitoring area.

[0025] In some embodiments, in order to prevent the transmitter 3 from falling out, the transmitter 3 further has a limit block 303, the limit block 303 is located between the sensing end 301 and the limit end 302, and the port of the second end is located between the limit end 301 and the limit block 303. When the transmitter 3 moves along the cavity, the two sides of the port of the second end can respectively abut against the limit end 301 and the limit block 303, thereby limiting the movement range of the transmitter 3.

[0026] In some embodiments, the cartridge case 1 includes a sleeve 11 and a cap 12. The sleeve 11 has a cavity therein, and the cap 12 is detachably connected to one end of the sleeve 11 to facilitate loading of the transmitter 3. The cap 12 has a through hole connected to the cavity to form a second end of the cavity. The cap 12 is located between the limit end 302 and the limit block 303, and the two side surfaces of the cap 12 are respectively used to abut against the limit end 302 and the limit block 303 for limit.

[0027] In some embodiments, the transmitter 3 includes an end cover 31 and a transmission rod 32. The end cover 31 is detachably connected to one end of the transmission rod 32. The end cover 31 has a limiting end 302. The end of the transmission rod 32 away from the end cover 31 is a sensing end 301. The middle part of the transmission rod 32 has a limiting block 303.

[0028] One end of the end cap 31 is threadedly connected to the transmission rod, and the other end extends radially outward to form a limit end 31. By increasing the area of ​​the limit end, the fault tolerance of contact with the workpiece is increased.

[0029] In some embodiments, an elastic member 4 is further provided, and the elastic member 4 has elastic force so as to make the limiting block 303 abut against the cover cap 12 .

[0030] In this embodiment, the inner wall of the sleeve 11 extends radially inward to form a protrusion 111, the sensor 2 is located on one side of the protrusion 111, the limit block 303 is located on the other side of the protrusion 111, and the transmission rod 32 can pass through the protrusion 111 and move toward the sensor 2. The elastic member 4 is a spring, which is sleeved on the transmission rod 32 and has two ends respectively abutting against the limit block 303 and the protrusion 111. The spring is in a compressed state, so that the limit block 303 is pressed against the cap 12. When detecting the workpiece, the workpiece pushes the transmitter 3 to move inward, further compressing the spring. After the detection is completed, the elastic force of the spring pushes the transmitter 3 back to its original position.

[0031] In this embodiment, the distance between the sensor head and the protrusion 111 is greater than the distance between the end cover 31 and the cap 12, but smaller than the sensing range of the sensor 2. For example, the distance between the sensor head and the protrusion 111 is 5 mm, and the distance between the end cover 31 and the cap 12 is 4 mm.

[0032] In some embodiments, the transfer-type detection device further comprises a buffer sleeve 5 , which is disposed between the sensor head and the protrusion 111 , and is elastic, so as to protect the sensor head when the sensor 2 moves unexpectedly.

[0033] In some embodiments, the transfer-type detection device further comprises a protective cover 6, which is sleeved on the outside of the sensor 2 to prevent welding splashes from reaching the sensor 2 or overflowing glue from adhering to the sensor 2 during use.

[0034] Compared with the prior art, the transfer-type detection device provided by the utility model changes the existing way in which the sensor directly detects the workpiece. The workpiece contacts the transmitter and pushes the transmitter to move. The sensor detects the transmitter equivalently to the workpiece. The abutment limit of the limit end and the second end port is utilized to ensure that there is a gap between the sensing end and the sensing head, and the gap is smaller than the sensing range of the sensing head. The sensing end can be detected without damaging the sensor.

[0035] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A transfer detection device, characterized in that: The invention comprises: a cylindrical shell, a sensor and a transmitter, wherein the cylindrical shell has a cavity with two ends open, the sensor is inserted into the first end of the cavity and the sensing head of the sensor faces the second end of the cavity, the transmitter has a sensing end and a limiting end, the sensing end is inserted into the second end of the cavity and the transmitter is movably connected with the cylindrical shell; when the limiting end abuts against the port of the second end, there is a gap between the sensing end and the sensing head, and the gap is smaller than the sensing range of the sensing head.

2. The transfer detection device according to claim 1, characterized in that: The transmitter also has a limit block, which is located between the sensing end and the limit end, and the port of the second end is located between the limit end and the limit block; when the transmitter moves along the cavity, the two sides of the port of the second end can respectively abut the limit end and the limit block.

3. The transfer detection device according to claim 2, characterized in that: The cartridge shell comprises a sleeve and a cap, wherein the sleeve has a cavity, the cap is detachably connected to one end of the sleeve, and the cap has a through hole connected to the cavity to form a second end of the cavity; the cap is located between the limiting end and the limiting block.

4. The transfer detection device according to claim 3, characterized in that: The transmitter comprises an end cover and a transmission rod. The end cover is detachably connected to one end of the transmission rod. The end cover has a limiting end. The end of the transmission rod away from the end cover is a sensing end. The middle part of the transmission rod has a limiting block.

5. The transfer detection device according to claim 4, characterized in that: One end of the end cover is threadedly connected to the transmission rod, and the other end extends radially outward to form a limiting end.

6. The transfer detection device according to claim 4, characterized in that: It also includes an elastic member, which has elastic force so that the limiting block abuts against the cover cap.

7. The transfer detection device according to claim 6, characterized in that: The inner wall of the sleeve extends radially inward to form a protrusion, the sensor is located on one side of the protrusion, the limit block is located on the other side of the protrusion, and the transmission rod can pass through the protrusion and move toward the sensor; the elastic member is a spring, the spring is sleeved on the transmission rod and the two ends respectively abut the limit block and the protrusion.

8. The transfer detection device according to claim 7, characterized in that: The distance between the induction head and the protrusion is greater than the distance between the end cover and the cap.

9. The transfer detection device according to claim 8, characterized in that: It also includes a buffer sleeve, which is arranged between the induction head and the protrusion and has elasticity.

10. The transfer detection device according to claim 1, characterized in that: The invention also comprises a protective cover which is arranged outside the sensor.

Images