Point inspection device

Abstract

The utility model discloses a spot inspection device and relates to the spot inspection device technical field, the spot inspection device is used for detecting the size of a stud welding gun, the stud welding gun comprises a guide block, a guide pipe and a chuck arranged in the guide pipe, the spot inspection device comprises a first measuring piece and a second measuring piece which are connected with each other, the end, away from the second measuring piece, of the first measuring piece is sleeved with the guide block, a mounting hole is formed in the end, away from the first measuring piece, of the second measuring piece, the end, away from the first measuring piece, of the second measuring piece is sleeved with the guide pipe, and the mounting hole is used for allowing the chuck to stretch into. When the first measuring piece can extend into the inner hole of the guide block, the inner hole of the guide block is abraded; when the second measuring piece can extend into the guide pipe and the chuck extends into the mounting hole, the guide pipe and the chuck are coaxial, namely, the guide pipe and the chuck are centered at the moment, so that the requirement of stud welding is met; therefore, the accuracy of spot inspection is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spot inspection devices, in particular to a spot inspection device. Background Art

[0002] In vehicle production, stud welding is required with a stud welding gun. To ensure the strength and quality of stud welding, multiple quality conditions need to be inspected and maintained, including the inspection of the wear of the fixture guide block in the stud welding gun and the alignment inspection of the guide tube and the chuck. Generally, the inspection of the wear of the fixture guide block is to measure the size of the fixture guide block with a vernier caliper to determine the degree of wear, and the alignment inspection of the guide tube and the chuck is to visually inspect whether the guide tube and the chuck are aligned. However, this method will lead to large errors due to the different measurement techniques and personal judgments of the inspectors, thereby reducing the strength and quality of the stud welding.

[0003] Therefore, it is necessary to provide a new inspection device to solve the above technical problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a spot inspection device, aiming to improve the technical problem that there is a large error in the spot inspection of the stud welding gun in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model proposes a spot inspection device, which is used to detect the size of a stud welding gun. The stud welding gun includes a guide block, a guide tube and a chuck arranged in the guide tube, and is characterized in that it includes a first measuring piece and a second measuring piece connected to each other, an end of the first measuring piece away from the second measuring piece is used to be sleeved on the guide block, an end of the second measuring piece away from the first measuring piece is formed with a mounting hole, an end of the second measuring piece away from the first measuring piece is used to be sleeved on the guide tube, and the mounting hole is used for the chuck to extend into.

[0006] In one embodiment, an outer surface of the second measuring member is formed with an external thread.

[0007] In one embodiment, the pitch of the external thread is 2 mm to 3 mm.

[0008] In one embodiment, the length of the external thread is greater than the depth of the mounting hole.

[0009] In one embodiment, the first measuring member is formed with a through hole, and the inspection device further includes an auxiliary rod, and the auxiliary rod is detachably mounted on the through hole.

[0010] In one embodiment, anti-slip grooves are formed on the outer surface of the auxiliary rod.

[0011] In one embodiment, the diameter of the mounting hole is 10 mm to 10.5 mm.

[0012] In one embodiment, the first measuring member is formed with a telescopic hole, and the second measuring member is telescopically disposed in the telescopic hole.

[0013] In one embodiment, the first measuring piece is formed with a first adjustment hole interconnected with the telescopic hole, and the second measuring piece is provided with a second adjustment hole. The inspection device also includes a threaded fastener, and the threaded fastener passes through the first adjustment hole and is installed in the second adjustment hole to fix the first measuring piece and the second measuring piece to each other.

[0014] In one embodiment, the number of the first adjustment holes is multiple, the number of the second adjustment holes is multiple, the number of the threaded fastener is at least one, and the threaded fastener passes through one of the first adjustment holes and is installed in one of the second adjustment holes.

[0015] In the above scheme, the inspection device is used to detect the size of the stud welding gun, which includes a guide block, a guide tube and a chuck arranged in the guide tube, and is characterized in that it includes a first measuring piece and a second measuring piece connected to each other, an end of the first measuring piece away from the second measuring piece is used to be sleeved on the guide block, an end of the second measuring piece away from the first measuring piece is formed with a mounting hole, an end of the second measuring piece away from the first measuring piece is used to be sleeved on the guide tube, and the mounting hole is used for the chuck to extend into. When inspection is required, the operator picks up the inspection device, points one end of the first measuring piece toward the guide block, and sleeves the first measuring piece into the inner hole of the guide block. When the first measuring piece can extend into the inner hole of the guide block, it indicates that the inner hole of the guide block is worn, and the operator replaces the guide block. When the first measuring piece cannot extend into the inner hole of the guide block, it indicates that the internal control of the guide block currently meets the requirements of stud welding, and there is no need to replace the guide block. Then the operator points one end of the second measuring piece toward the guide tube, and then extends the second measuring piece into the guide tube, and aligns the chuck in the guide tube with the mounting hole, and extends the chuck into the mounting hole. When the second measuring piece is inserted into the inner hole of the guide block, it indicates that the inner hole of the guide block is worn. The operator replaces the guide block. When the first measuring piece cannot extend into the inner hole of the guide block, it indicates that the internal control of the guide block currently meets the requirements of stud welding, and the guide block does not need to be replaced. The measuring piece can be inserted into the guide tube and the chuck can be inserted into the mounting hole, which indicates that the guide tube and the chuck are coaxial, that is, the guide tube and the chuck are aligned at this time, which meets the requirements of stud welding. When the second measuring piece cannot be inserted into the guide tube, the chuck can be inserted into the mounting hole, which indicates that the guide tube and the chuck are not aligned at this time, and deviations have occurred in the guide tube and the chuck, which does not meet the requirements of stud welding and requires replacement of the guide tube and the chuck. The utility model sets a standard inspection device, which does not require manual measurement and visual inspection, greatly improves the accuracy of measurement, ensures that no errors will occur during the inspection process, and ensures the welding strength and quality of the stud welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the overall structure of an embodiment of the spot inspection device provided by the utility model from one viewing angle;

[0018] Figure 2 A schematic diagram of the overall structure of an embodiment of the spot inspection device provided by the utility model from another perspective;

[0019] Figure 3 A cross-sectional view of an embodiment of a spot inspection device provided by the utility model;

[0020] Figure 4 A schematic diagram of a guide block inspection of an embodiment of an inspection device provided by the utility model;

[0021] Figure 5 A schematic diagram of guide tube inspection of an embodiment of an inspection device provided by the utility model.

[0022] Description of Figure Numbers:

[0023] 100. Inspection device; 101. Guide block; 102. Guide tube; 103. Chuck; 1. First measuring piece; 11. Through hole; 12. Telescopic hole; 13. First adjustment hole; 2. Second measuring piece; 21. Mounting hole; 22. External thread; 23. Second adjustment hole; 3. Auxiliary rod; 4. Threaded fastener.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] In order to ensure the strength and quality of stud welding, it is necessary to inspect and maintain a number of good product conditions, including the inspection of the wear of the fixture guide block in the stud welding gun and the inspection of the alignment of the guide tube and the chuck. Generally, the inspection of the wear of the fixture guide block is to measure the size of the fixture guide block with a vernier caliper to determine the degree of wear, and the inspection of the alignment of the guide tube and the chuck is to visually check whether the guide tube and the chuck are aligned. However, this method will lead to large errors due to the different measurement techniques and personal judgments of the inspectors, thereby reducing the strength and quality of the stud welding.

[0029] See also Figures 1 to 5The inspection device 100 proposed in the utility model is used to detect the size of a stud welding gun. The stud welding gun includes a guide block 101, a guide tube 102 and a chuck 103 arranged in the guide tube 102, and is characterized in that it includes a first measuring piece 1 and a second measuring piece 2 connected to each other, an end of the first measuring piece 1 away from the second measuring piece 2 is used to be sleeved on the guide block 101, an end of the second measuring piece 2 away from the first measuring piece 1 is formed with a mounting hole 21, an end of the second measuring piece 2 away from the first measuring piece 1 is used to be sleeved on the guide tube 102, and the mounting hole 21 is used for the chuck 103 to extend into. When inspection is required, the operator picks up the inspection device 100, points one end of the first measuring piece 1 toward the guide block 101, and sleeves the first measuring piece 1 in the inner hole of the guide block 101. When the first measuring piece 1 can be inserted into the inner hole of the guide block 101, it indicates that the inner hole of the guide block 101 is worn, and the operator replaces the guide block 101. When the first measuring piece 1 cannot be inserted into the inner hole of the guide block 101, it indicates that the inner hole of the guide block 101 currently meets the requirements of stud welding, and the guide block 101 does not need to be replaced; then the operator points one end of the second measuring piece 2 toward the guide tube 102, and then inserts the second measuring piece 2 into the guide tube 102, and aligns the chuck 103 in the guide tube 102 with the mounting hole 21, and inserts the chuck 103 into the mounting hole 21. When the second measuring piece 1 is inserted into the inner hole of the guide block 101, the operator replaces the guide block 101. Part 2 can be inserted into the guide tube 102, and the chuck 103 can be inserted into the mounting hole 21, which indicates that the guide tube 102 and the chuck 103 are coaxial, that is, the guide tube 102 and the chuck 103 are aligned at this time, which meets the requirements of stud welding. When the second measuring part 2 cannot be inserted into the guide tube 102, the chuck 103 can be inserted into the mounting hole 21, which indicates that the guide tube 102 and the chuck 103 are not aligned at this time, and the guide tube 102 and the chuck 103 have deviations, which does not meet the requirements of stud welding and needs to be replaced. In this embodiment, a standard size inspection device 100 is set, so there is no need for manual measurement and visual inspection, which greatly improves the accuracy of measurement, ensures that no errors will occur during the inspection process, and ensures the welding strength and quality of stud welding.

[0030] See also Figures 1 to 5In one embodiment, an external thread 22 is formed on the outer surface of the second measuring piece 2. When the stud welding gun is welding, there will be a lot of welding slag in the guide tube 102, and these welding slags will interfere with normal welding operations. Therefore, an external thread 22 is formed on the outer surface of the second measuring piece 2, so that the mounting hole 21 is aligned with the chuck 103, and the chuck 103 is inserted into the mounting hole 21. During the insertion process, the second measuring piece 2 is rotated clockwise, so that the external thread 22 interferes with the welding slag in the guide tube 102 and rubs repeatedly, and the welding slag enters the external thread 22, and then the second measuring piece 2 is screwed out counterclockwise, so that the welding slag is brought out of the guide tube 102, and the welding slag in the guide tube 102 is cleared to prevent the welding slag from interfering with normal welding operations.

[0031] In one embodiment, the pitch of the external thread 22 is 2mm to 3mm. Since the welding slag has a certain size, in order to ensure that the welding slag can enter the external thread 22, the external thread 22 needs to have a certain pitch to ensure that the welding slag can enter. Generally speaking, the pitch of the external thread 22 is 2mm to 3mm, which can ensure that the welding slag enters the external thread 22 and is taken out of the guide tube 102; in order to ensure that the pitch is not too large, so that the welding slag falls from the pitch into the guide tube 102, the effect of removing the welding slag is best when the pitch of the external thread 22 is 2.5mm.

[0032] In one embodiment, the length of the external thread 22 is greater than the depth of the mounting hole 21. In order to ensure that the welding slag in the guide tube 102 can be completely removed, the length of the external thread 22 is set to be greater than the depth of the mounting hole 21, so that when the chuck 103 is fully inserted into the mounting hole 21, the external thread 22 can completely cover the inner wall of the guide tube 102, so that all the welding slag in the guide tube 102 can enter the external thread 22, which can further improve the effect of removing the welding slag.

[0033] See also Figures 1 to 5In one embodiment, the first measuring piece 1 is formed with a through hole 11, and the inspection device 100 further includes an auxiliary rod 3, which is detachably mounted on the through hole 11. When the stud welding gun is welding, there will be a lot of welding slag in the guide tube 102, and these welding slags will interfere with normal welding operations. Therefore, an external thread 22 is formed on the outer surface of the second measuring piece 2, so that the mounting hole 21 is aligned with the chuck 103, and the chuck 103 is inserted into the mounting hole 21. During the insertion process, the operator holds the auxiliary rod 3, and then rotates the second measuring piece 2 through the auxiliary rod 3, so that the second measuring piece 2 rotates the second measuring piece 2 clockwise, so that the external thread 22 interferes with the welding slag in the guide tube 102 and rubs repeatedly, and the welding slag enters the external thread 22, and then the second measuring piece 2 is screwed out counterclockwise through the auxiliary rod 3, so that the welding slag is brought out of the guide tube 102, and the welding slag in the guide tube 102 is removed. By providing the auxiliary rod 3, it is convenient for the operator to remove the welding slag.

[0034] In one embodiment, the outer surface of the auxiliary rod 3 is formed with anti-skid patterns. By providing the anti-skid patterns, when the operator takes the auxiliary rod 3, it is prevented from slipping.

[0035] In one embodiment, the diameter of the mounting hole 21 is 10 mm to 10.5 mm. Generally speaking, a certain deviation is allowed after the chuck 103 and the guide tube 102 are aligned. Within this deviation range, the welding strength and quality will not be affected. Since the diameter of the chuck 103 is generally 10 mm, the diameter of the mounting hole 21 is set to 10 mm to 10.5 mm. In this way, even if there is a deviation of 0.5 mm between the chuck 103 and the guide tube 102, it is normal during inspection, and the operator does not need to make a second judgment, which also saves the cost of replacement.

[0036] See also Figures 1 to 3 In one embodiment, the first measuring member 1 is formed with a telescopic hole 12, and the second measuring member 2 is telescopically arranged in the telescopic hole 12. According to the usage habits of different operators and the different lengths of the guide tube 102, the operator can extend the first measuring member 1 out of the telescopic hole 12 or retract it into the telescopic hole 12, which is convenient for the operator to perform spot inspection operations. Such a setting can expand the applicable scope of the spot inspection device 100.

[0037] See also Figures 1 to 3 In one embodiment, the first measuring member 1 is formed with a first adjustment hole 13 that is interconnected with the telescopic hole 12, and the second measuring member 2 is provided with a second adjustment hole 23. The inspection device 100 further includes a threaded fastener 4, which passes through the first adjustment hole 13 and is installed in the second adjustment hole 23 to fix the first measuring member 1 and the second measuring member 2 to each other. By setting this structure, the first measuring member 1 and the second measuring member 2 can be firmly connected, and at the same time, it is easy to disassemble, replace and repair.

[0038] See also Figures 1 to 3 In one embodiment, there are multiple first adjustment holes 13, multiple second adjustment holes 23, at least one threaded fastener 4, and the threaded fastener 4 passes through one of the first adjustment holes 13 and is installed in one of the second adjustment holes 23. When it is necessary to adjust the length of the inspection device 100, the operator takes out the threaded fastener 4 from the first adjustment hole 13 and the second adjustment hole 23, and then extends the first measuring piece 1 out of the second measuring piece 2 until the inspection device 100 is extended to a suitable length, and then passes the threaded fastener 4 through one of the first adjustment holes 13 and one of the second adjustment holes 23, so that the first measuring piece 1 and the second measuring piece 2 are locked, and at the same time, the adjustment distance can be obtained according to the spacing between each second adjustment hole 23, and the length can be adjusted according to the required length by setting this structure.

[0039] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A spot inspection device, the spot inspection device is used to detect the size of a stud welding gun, the stud welding gun comprises a guide block, a guide tube and a chuck arranged in the guide tube, characterized in that: It includes a first measuring piece and a second measuring piece that are connected to each other, wherein one end of the first measuring piece away from the second measuring piece is used to be sleeved on the guide block, one end of the second measuring piece away from the first measuring piece is formed with a mounting hole, one end of the second measuring piece away from the first measuring piece is used to be sleeved on the guide tube, and the mounting hole is used for the chuck to extend into.

2. The inspection device according to claim 1, characterized in that: An external thread is formed on the outer surface of the second measuring member.

3. The inspection device according to claim 2, characterized in that: The pitch of the external thread is 2 mm to 3 mm.

4. The inspection device according to claim 3, characterized in that: The length of the external thread is greater than the depth of the mounting hole.

5. The inspection device according to any one of claims 2 to 4, characterized in that: The first measuring member is formed with a through hole, and the inspection device further includes an auxiliary rod, and the auxiliary rod is detachably mounted on the through hole.

6. The inspection device according to claim 5, characterized in that: The outer surface of the auxiliary rod is formed with anti-slip grooves.

7. The inspection device according to claim 1, characterized in that: The diameter of the mounting hole is 10 mm to 10.5 mm.

8. The inspection device according to claim 1, characterized in that: The first measuring piece is formed with a telescopic hole, and the second measuring piece is telescopically disposed in the telescopic hole.

9. The inspection device according to claim 8, characterized in that: The first measuring piece is formed with a first adjustment hole interconnected with the telescopic hole, and the second measuring piece is provided with a second adjustment hole. The inspection device also includes a threaded fastener, which passes through the first adjustment hole and is installed in the second adjustment hole to fix the first measuring piece and the second measuring piece to each other.

10. The inspection device according to claim 9, characterized in that: The number of the first adjustment holes is multiple, the number of the second adjustment holes is multiple, the number of the threaded fastener is at least one, and the threaded fastener passes through one of the first adjustment holes and is installed in one of the second adjustment holes.

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