CN217442832U - Riveting nut detection device and workpiece clamp with same - Google Patents

Abstract

The utility model belongs to the technical field of detection tools, and more particularly relates to a riveting nut detection device and a clamp with the same, wherein the riveting nut detection device comprises a box body and a detection shaft part, and two ends of the detection shaft part respectively penetrate through the box body and are in sliding fit with the box body; the mechanical feedback mechanism is used for detecting the condition, one end of the detection shaft piece is abutted to the position to be detected, the other end of the detection shaft piece is connected with the mechanical feedback mechanism for detecting the condition through the sliding drive of the detection shaft piece, and the mechanical feedback mechanism executes mechanical feedback. The utility model discloses simple structure, it is with low costs, and detection effect is comparatively reliable.

Description

Riveting nut detection device and workpiece clamp with same

Technical Field

The utility model belongs to the technical field of the detection instrument, more specifically relates to a riveting nut detection device and have its work piece holder.

Background

The riveting has the advantages of simple process equipment, shock resistance, impact resistance, firmness, reliability and the like, so the riveting process is widely applied to the field of automobile manufacturing, and is particularly mainly applied to automobile opening and closing parts (four doors, an engine cover and a rear cover).

The automobile opening and closing part needs to rivet the nuts on the workpiece in the welding production process, and due to the fact that the riveting quantity is large and manual riveting is mainly used, the inspection steps after the riveting nuts are installed are completed manually. On one hand, the situations of incomplete inspection and missing riveting of the nut easily occur, the manual inspection efficiency is low, and the requirement of the current automobile industrial automation cannot be met; on the other hand, the workpieces of the rivet joint nut flow into the post process, so that related parts cannot be installed, the repair time is long, rust prevention is difficult to treat, particularly, the license plate installation nut on the outer plate of the rear cover does not need to be installed in the post process, the rivet joint is difficult to find in the production process, the license plate cannot be installed by a customer when the license plate is flowed into the market, serious market defects are caused, and more manpower and capital costs can be paid if a manufacturer recalls the automobile.

The device for detecting the leak-proof rivet of the rivet nut of the automobile anti-collision beam comprises a frame, a positioning pin, a detection mechanism and a mechanical pressing block; the two positioning pins are arranged at two ends of the frame and respectively correspond to holes in the automobile anti-collision beam; the detection mechanism and the mechanical pressing block are arranged on the rack and are matched with each other to perform leak-proof riveting detection on the automobile anti-collision beam; the detection mechanism comprises a magnetic cylinder and an inductive switch; the inductive switch is arranged on the magnetic cylinder and is matched with the magnetic cylinder to detect whether the riveting nut is riveted in a leaking mode. Although the automatic detection is realized and the labor intensity is reduced, the structure is complex, the adopted sensors, PLC and the like need to be controlled by corresponding circuits, the cost is high, the energy consumption is high, in addition, the performance of the sensors also directly influences the detection precision, and the detection precision of the whole device is not reliable enough; in addition, because the sensor is used, the sensor is limited by a line, is generally fixed, cannot move freely and is poor in adaptability.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome at least one defect among the above-mentioned prior art, provide a riveting nut detection device and have its work piece holder, its structure is comparatively simple, and is with low costs, and detection effect is more reliable.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the riveting nut detection device comprises a box body and a detection shaft part, wherein two ends of the detection shaft part respectively penetrate through the box body and are in sliding fit with the box body; the device is characterized by further comprising a detection condition mechanical feedback mechanism, wherein one end of the detection shaft piece is abutted to the position to be detected, the other end of the detection shaft piece is connected with the detection condition mechanical feedback mechanism, and the detection condition mechanical feedback mechanism is driven to execute mechanical feedback through the sliding of the detection shaft piece.

Through the butt of detecting axle spare and position to be measured in this scheme, when the position to be measured has the riveting nut, thereby it is slided in the box body to detect the axle spare by the promotion, makes the detection condition machinery feedback mechanism who detects the axle spare other end make corresponding feedback action to remind the staff that the riveting nut has been beaten, if no, then show that the riveting nut leaks to beat, such mechanical structure is simple, and is with low costs, and the reliability is higher, be convenient for carry out the position change according to the work piece type, adaptability is higher.

As a further improved structure form, the detection shaft member comprises a moving shaft and an elastic reset member which is connected with the moving shaft and drives the moving shaft to reset.

As a further improved structural form, two opposite sides of the box body are respectively provided with a first through hole and a second through hole which are communicated with each other, two ends of the moving shaft are respectively provided with a detection head which is used for abutting against a position to be detected and a feedback head which is connected with a mechanical feedback mechanism for detection conditions, the diameter of the first through hole is larger than that of the moving shaft, the diameter of the second through hole is smaller than that of the moving shaft, the diameters of the detection head and the feedback head are smaller than that of the moving shaft, the moving shaft is inserted into the first through hole, and the feedback head is inserted into the second through hole.

As a further improved structure, the movable shaft sleeve is provided with a first shaft sleeve, the feedback head sleeve is provided with a second shaft sleeve, the first shaft sleeve is arranged in the first through hole in a sliding mode, and the second shaft sleeve is arranged in the second through hole in a sliding mode.

As a further improved structure, the device also comprises a first limiting structure which is arranged on the box body and used for limiting the first shaft sleeve to move along the axial direction of the moving shaft.

As a further improved structural form, the first limiting structure is a cover plate detachably mounted on one side of the box body away from the mechanical feedback structure, and one end of the first shaft sleeve, which is close to the detection head, abuts against one side of the cover plate, which is close to the mechanical feedback mechanism under the detection condition.

As a further improved structure, the feedback head is provided with an annular clamping groove, a stop gasket for preventing the feedback head from retracting into the box body is clamped in the annular clamping groove, and the stop gasket is arranged outside the box body.

As a further improved structure form, the detection device also comprises a bracket used for being connected with the workpiece clamp, and the box body and the detection condition mechanical feedback mechanism are arranged on the bracket.

Still provide a work piece holder, include the body, be used for controlling the gas circuit system of body centre gripping work piece to and a plurality of installs in the foretell riveting nut detection device of body, the detection condition mechanical feedback mechanism among the riveting nut detection device is connected and control the open-closed state of gas circuit system with gas circuit system intercommunication.

As a further improved structural form, the mechanical feedback mechanism for detecting the condition is a pneumatic mechanical valve.

Through integrated riveting nut detection device on work piece holder in this scheme, through detection condition mechanical feedback mechanism among the riveting nut detection device control work piece holder's gas circuit system, when leaking the riveting, the gas circuit system is closed by detection condition mechanical feedback mechanism to can not normally press from both sides tightly the work piece, with the suggestion hourglass riveting, avoid leaking the riveting product and get into next process, and then improve the yields of product.

Compared with the prior art, the beneficial effects are:

1) the utility model improves the automation degree of the automobile production line and reduces the labor intensity of workers;

2) the utility model discloses the structure is comparatively simple, and the cost is reduced, and adopts the gas circuit structure, and it is higher to detect the reliability, is favorable to improving the yields of auto parts, promotes whole car quality ability, effectively avoids leaking the work piece outflow of riveting;

3) the utility model discloses can carry out the adaptability repacking according to motorcycle type or part type, its adaptability is higher, effectively reduces whole manufacturing cost.

Drawings

Fig. 1 is a first angle schematic diagram of the overall structure of a riveting nut detection device according to embodiment 1 of the present invention;

fig. 2 is a second angle schematic view of the overall structure of the riveting nut detecting device according to embodiment 1 of the present invention;

fig. 3 is a third angle schematic diagram of the overall structure of the riveting nut detecting device in embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural view of a detection shaft of the riveting nut detection device according to embodiment 1 of the present invention;

fig. 6 is a schematic view of the overall structure of the riveting nut detecting device according to embodiment 2 of the present invention;

fig. 7 is a schematic structural view of a workpiece holder according to embodiment 3 of the present invention;

fig. 8 is a schematic block diagram of the mechanical feedback mechanism and the gas circuit system for detecting the workpiece holder in embodiment 3 of the present invention.

The riveting nut detection device comprises a 100-box body, 11-a first through hole, 12-a second through hole, 2-a detection shaft part, 21-a moving shaft, 22-a detection head, 23-a feedback head, 24-a first shaft sleeve, 25-a second shaft sleeve, 26-an annular clamping groove, 3-a detection condition mechanical feedback mechanism, 4-an elastic reset part, 5-a cover plate, 6-a second limiting structure, 7-a support, 200-a body 200 and 300-an air path system.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms can be understood according to specific situations by those of ordinary skill in the art.

Example 1:

fig. 1 to 5 show a first embodiment of a riveting nut detection device, which includes a box 1 and a detection shaft 2, wherein two ends of the detection shaft 2 respectively penetrate through the box 1 and are in sliding fit with the box 1; the device is characterized by further comprising a detection condition mechanical feedback mechanism 3, one end of the detection shaft piece 2 is abutted to the position to be detected, the other end of the detection shaft piece is connected with the detection condition mechanical feedback mechanism 3, and the detection condition mechanical feedback mechanism 3 is driven to execute mechanical feedback through the sliding of the detection shaft piece 2.

It should be noted that the detection condition mechanical feedback mechanism 3 in this embodiment may adopt a detection condition mechanical feedback mechanism 3 that controls an air path of the workpiece fixture, the detection condition mechanical feedback mechanism 3 generally has a mechanical contact, the detection shaft 2 is connected to the mechanical contact, and the contact opens the internal air path when being stressed, so that the workpiece fixture can be clamped normally, thereby prompting that the riveting is good, and the specific working principle inside the detection condition mechanical feedback mechanism 3 is not detailed here. Of course, it is within the scope of the present solution to employ other types of products.

The detecting shaft 2 in this embodiment includes a moving shaft 21 and an elastic restoring member 4 connected to the moving shaft 21 and driving the moving shaft 21 to be restored. In this embodiment, the elastic restoring member 4 is preferably a compression spring, one end of the compression spring abuts against the inner side wall of the case 1, and the other end abuts against the end of the moving shaft 21; through compression spring's setting, in the beginning, compression spring produces supporting role to detecting axle spare 2, make to remove axle 21 and can expose all the time in 1 outsides of box body, and then can take place the butt with the position that awaits measuring, in the testing process, when removing axle 21 and taking place decurrent endwise slip under the butt effect of riveting nut, compression spring pressurized stored energy, detect the completion back, remove the work piece that awaits measuring, it disappears to detect the external force that axle spare 2 receives promptly, compression spring release energy, drive and detect axle spare 2 and reset and maintain exposing of removing axle 21, prepare for next detection achievement. Of course, it should be understood that the embodiment of the present invention which uses the compression spring as the elastic restoring member 4 is only a reference embodiment, and is not to be construed as a limitation to the present invention, and other types of elastic members in the art may also be used in the specific implementation process, and will not be described in detail herein.

Referring to fig. 2, 4 and 5, two opposite sides of the case 1 in this embodiment are respectively provided with a first through hole 11 and a second through hole 12 which are communicated with each other, two ends of the moving shaft 21 are respectively provided with a detection head 22 which is used for abutting against a position to be detected and a feedback head 23 which is connected with the detection condition mechanical feedback mechanism 3, the diameter of the first through hole 11 is larger than that of the moving shaft 21, the diameter of the second through hole 12 is smaller than that of the moving shaft 21, the diameters of the detection head 22 and the feedback head 23 are both smaller than that of the moving shaft 21, the moving shaft 21 is inserted into the first through hole 11, and the feedback head 23 is inserted into the second through hole 12. In a specific embodiment, the detection head 22 is entirely positioned outside the box body 1, one end of the feedback head 23 is positioned inside the box body 1, and the other end is positioned outside the box body 1 and is connected with the detection condition mechanical feedback mechanism 3, so that when the detection shaft part 2 slides along the self-axial direction, the detection shaft part 2 can be prevented from falling from the box body 1 through the bottom; in the detection process, the detection head 22 can be limited by the riveting nut to move transversely of the detection shaft 2, so that the detection error caused by transverse sliding of the detection head 22 in the process of abutting against the position to be detected is avoided; and detect shaft spare 2 and can slide in box body 1 along self axial under riveting nut's butt effect, and then make the feedback head 23 butt of the removal axle 21 other end on detection condition mechanical feedback mechanism 3, open the work piece holder gas circuit and make it normally press from both sides tightly, it is normal to indicate the riveting, if the position to be measured of detection head 22 butt does not have riveting nut, then feedback head 23 can not butt on detection condition mechanical feedback mechanism 3, then work piece holder's gas circuit can not normally work, work piece holder can not normally press from both sides tightly promptly, thereby can learn that riveting nut has missed.

The moving shaft 21 in this embodiment is sleeved with a first shaft sleeve 24, the feedback head 23 is sleeved with a second shaft sleeve 25, the first shaft sleeve 24 is slidably disposed in the first through hole 11, and the second shaft sleeve 25 is slidably disposed in the second through hole 12. The abrasion of the movable shaft 21 and the feedback head 23 can be reduced through the first shaft sleeve 24 and the second shaft sleeve 25, and the whole service life of the whole device is prolonged; in addition, the first shaft sleeve 24 and the second shaft sleeve 25 are respectively arranged in the first through hole 11 and the second through hole 12 in a sliding mode, and therefore the first shaft sleeve 24 and the second shaft sleeve 25 can be replaced conveniently. And since the diameter of the second through hole 12 is smaller than that of the moving shaft 21, the moving shaft 21 is prevented from falling off from the case 1 during the downward movement.

Because the moving shaft 21 can generate friction force to the first shaft sleeve 24 in the axial movement process, and a first gap is formed between the first shaft sleeve 24 and the first through hole 11, in order to avoid the friction force to bring the first shaft sleeve 24 out of the box body 1, and ensure that the detection shaft element 2 can normally slide downwards along the axial direction, in a specific embodiment, the axial movement detection device further comprises a first limiting structure which is arranged on the box body 1 and used for limiting the axial movement of the first shaft sleeve 24 along the moving shaft 21. The first limiting structure in this embodiment is a cover plate 5 (see fig. 1, 3, and 4) detachably mounted on one side of the box body 1 away from the mechanical feedback mechanism 3 for detecting the condition, and one end of the first shaft sleeve 24 close to the detection head 22 abuts against one side of the cover plate 5 close to the mechanical feedback mechanism 3 for detecting the condition, so that the cover plate 5 limits the upward sliding of the first shaft sleeve 24, and simultaneously, the detection shaft 2 can be ensured to slide downward, that is, the normal operation of the device is ensured. Through the setting of apron 5, can avoid first axle sleeve 24 to be taken out box body 1 and cause the unusual wearing and tearing of removal axle 21, guarantee the life of whole device. It should be noted that, in the present embodiment, the positioning of the cover plate 5 on the first shaft sleeve 24 is only a reference embodiment, and is not to be understood as a limitation to the present embodiment, and in the specific implementation process, other types of structures may be adopted to axially position the first shaft sleeve 24 according to the actual situation.

In a specific embodiment, the feedback head 23 is provided with an annular clamping groove 26 (see fig. 4 and 5), the annular clamping groove 26 is clamped with a stop gasket 6 for preventing the feedback head 23 from retracting into the box body 1, and the stop gasket 6 is located outside the box body 1; through the setting of the stop gasket 6, the situation that the feedback head 23 completely enters the box body 1 and the feedback head 23 cannot smoothly slide downwards in the next detection process due to the fact that the detection shaft piece 2 excessively rises in the reset process can be avoided, and the sustainable application of the device is guaranteed. Of course, the stop washer 6 is adopted to limit the feedback head 23 in the present embodiment, which is only a reference embodiment, and cannot be understood as a limitation to the present embodiment, and in the specific implementation process, other types of structures may be adopted to limit the feedback head 23, and no limitation is made here.

Through the butt of detecting axle 2 and the position of awaiting measuring in this embodiment, when the position of awaiting measuring has the riveting nut, thereby it is slided in box body 1 to detect axle 2 by the promotion, the 2 other end butts of detection axle that make are on detection condition mechanical feedback mechanism 3, and then the switching of control detection condition mechanical feedback mechanism 3, thereby control work piece holder's gas circuit, such mechanical structure is simple, and is with low costs, and bring the higher advantage of reliability through gas circuit control, in addition still be convenient for carry out the position change according to the work piece type, adaptability is higher.

Example 2:

as shown in fig. 6, a second embodiment of a riveting nut detecting device is provided, and the present embodiment is different from embodiment 1 only in that the present embodiment further comprises a bracket 7 for connecting with a work holder, and the box body 1 and the detecting condition mechanical feedback mechanism 3 are both mounted on the bracket 7. Therefore, the whole device can be connected with a corresponding workpiece clamp through the bracket 7, the installation procedure of the device is simplified, and the installation efficiency is improved.

Example 3:

as shown in fig. 7 and 8, an embodiment of a work fixture includes a main body 200, an air path system 300 for controlling the main body 200 to clamp a work, and a plurality of rivet nut detection apparatuses 100 of embodiments 1 and 2 mounted on the main body 200, wherein a detection condition mechanical feedback mechanism 3 in the rivet nut detection apparatus 100 is connected to the air path system 300 in a communicating manner and controls an open/close state of the air path system 300. In this embodiment, the rivet nut detecting apparatus 100 is mounted on the body 200 via the bracket 7.

In one particular embodiment, the condition-detecting mechanical feedback mechanism 3 is a pneumatic mechanical valve. In this way, the pneumatic mechanical valve of the rivet nut detection apparatus 100 directly controls the opening and closing of the air passage system 300 in the work fixture, thereby controlling the clamping action of the entire work fixture.

It should be noted that the number of the clinch nut detection apparatuses 100 in the work holder in the present embodiment is not limited, and may be set as occasion demands, which is easily understood by those skilled in the art.

Wherein, the mechanical feedback mechanism 3 for detecting the condition can adopt a meta-long TAC2 series product.

The work process of the workpiece clamp in the embodiment is as follows:

install the work piece on work piece holder, and the position to be measured aims at detection head 22 of riveting nut detection device 100, if there is riveting nut in the position to be measured, then it drives the axial slip that takes place towards detection condition mechanical feedback mechanism 3 that moves axle 21 to detect head 22 pressurized, this in-process, elasticity piece 4 pressurized storage energy that resets, feedback head 23 extrudees detection condition mechanical feedback mechanism 3, thereby open detection condition mechanical feedback mechanism 3, gas circuit system 300 switches on, then work piece holder can normally press from both sides tight work piece, if the position to be measured does not have riveting nut, then whole work piece holder's gas circuit system 300 closes, work piece holder can't work, the suggestion leaks the riveting.

In this embodiment, by integrating the riveting nut detection device 100 on the workpiece fixture, the air path system 300 of the workpiece fixture is controlled by the riveting nut detection device 100, and when riveting is missed, the air path system 300 is closed by the mechanical feedback mechanism 3 under the detected condition, so that the workpiece cannot be normally clamped, riveting is missed in a prompt, and the yield of the product is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The riveting nut detection device is characterized by comprising a box body (1) and a detection shaft piece (2), wherein two ends of the detection shaft piece respectively penetrate through the box body (1) and are in sliding fit with the box body (1); the mechanical feedback device is characterized by further comprising a detection condition mechanical feedback mechanism (3), one end of the detection shaft piece (2) is abutted to the position to be detected, and the other end of the detection shaft piece is connected with the detection condition mechanical feedback mechanism (3) and drives the detection condition mechanical feedback mechanism (3) to execute mechanical feedback through sliding of the detection shaft piece (2).

2. Riveting nut detection apparatus according to claim 1, characterized in that the detection shaft (2) comprises a mobile shaft (21) and an elastic return member (4) connected to the mobile shaft (21) and driving the mobile shaft (21) to return.

3. The riveting nut detection device according to claim 2, wherein two opposite sides of the box body (1) are respectively provided with a first through hole (11) and a second through hole (12) which are communicated with each other, two ends of the movable shaft (21) are respectively provided with a detection head (22) which is used for abutting against a position to be detected and a feedback head (23) which is connected with a mechanical feedback mechanism (3) for detecting conditions, the diameter of the first through hole (11) is larger than that of the movable shaft (21), the diameter of the second through hole (12) is smaller than that of the movable shaft (21), the diameters of the detection head (22) and the feedback head (23) are smaller than that of the movable shaft (21), the movable shaft (21) is inserted into the first through hole (11), and the feedback head (23) is inserted into the second through hole (12).

4. A riveted nut detection device according to claim 3, characterized in that the moving shaft (21) is sleeved with a first bushing (24), the feedback head (23) is sleeved with a second bushing (25), the first bushing (24) is slidably arranged in the first through hole (11), and the second bushing (25) is slidably arranged in the second through hole (12).

5. The riveting nut detecting device according to claim 4, further comprising a first limiting structure arranged on the box body (1) and used for limiting the axial movement of the first shaft sleeve (24) along the moving shaft (21).

6. The riveting nut detecting device according to claim 5, wherein the first limiting structure is a cover plate (5) detachably mounted on one side of the box body (1) far away from the mechanical feedback structure, and one end of the first shaft sleeve (24) close to the detecting head (22) abuts against one side of the cover plate (5) close to the mechanical feedback mechanism (3) under the detection condition.

7. The riveting nut detecting device according to claim 6, wherein the feedback head (23) is provided with an annular clamping groove (26), a stop gasket (6) for preventing the feedback head (23) from retracting into the box body (1) is clamped in the annular clamping groove (26), and the stop gasket (6) is arranged outside the box body (1).

8. A riveted nut detection apparatus according to any one of claims 1 to 7, characterized by further comprising a bracket (7) for connecting with a workpiece holder, wherein the box body (1) and the detection condition mechanical feedback mechanism (3) are both mounted on the bracket (7).

9. A workpiece clamp is characterized by comprising a body (200), an air path system (300) for controlling the body (200) to clamp a workpiece, and a plurality of riveting nut detection devices (100) which are installed on the body (200) and are disclosed in any one of claims 1 to 8, wherein a detection condition mechanical feedback mechanism (3) in the riveting nut detection devices (100) is connected with the air path system (300) and controls the opening and closing states of the air path system (300).

10. A workpiece holder as defined in claim 9, characterised in that the condition-detecting mechanical feedback mechanism (3) is a pneumatic mechanical valve.

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