Device for measuring influence of automobile flanging glue on size stability of sheet metal part

Abstract

The utility model relates to the technical field of automobile manufacturing, in particular to a device for measuring the influence of automobile flanging glue on the dimensional stability of sheet metal parts. A device for measuring the influence of automobile flanging glue on the size stability of a sheet metal part comprises a measurement positioning seat and a dial indicator, the measurement positioning seat comprises a first pressing seat, a second pressing seat and a connecting cross beam, the two ends of the connecting cross beam in the length direction are connected with the first pressing seat and the second pressing seat respectively, and the dial indicator is arranged on the first pressing seat. And the first pressing seat and the second pressing seat are respectively connected with the lower end surface of the connecting cross beam, and are respectively used for abutting against the measuring surface of a to-be-measured sheet metal part. The device for measuring the influence of the flanging adhesive for the automobile on the size stability of the sheet metal part is convenient to operate, high in measurement accuracy and low in device cost, and solves the technical problems of low measurement accuracy, complicated measurement operation and high device cost of the influence of the flanging adhesive on the size stability of the sheet metal part in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a device for measuring the influence of automobile hemming glue on the dimensional stability of sheet metal parts. Background Art

[0002] Automobile hem glue is mainly used for the hem of four doors and two covers or similar parts such as doors, engine hoods, trunk covers, etc. It is divided into two types: single-component thermal curing and two-component room temperature curing. It has good oil surface adhesion and anti-sagging properties. The cured hem glue plays the role of structural bonding, sealing and anti-corrosion.

[0003] The position where the automobile hemming glue is used is the hemming position between the inner panel sheet metal and the outer panel sheet metal. The inner and outer sheet metals are connected by robot rolling or hemming die folding and bonding with hemming glue. In the actual production process, since the curing of the single-component hemming glue requires high-temperature baking to have bonding strength, and the transportation, assembly adjustment, coating tank liquid washing, and high-temperature baking in the electrophoresis furnace in the production process, the size of the sheet metal will inevitably change, resulting in fluctuations in the dimensional stability of the sheet metal, and ultimately causing the gap between the sheet metal and the car body to be too large. At present, sheet metal deformation is generally measured by feeler gauges, rulers or 3D laser scanners, but the use of feeler gauges and rulers has the problem of low accuracy of measurement results, and the cost of 3D laser scanners is expensive and there is a problem of complex measurement. Utility Model Content

[0004] In response to the problems raised by the background technology, the purpose of the utility model is to propose a measuring device for the influence of automobile hemming glue on the dimensional stability of sheet metal parts. The device is easy to operate, has high measurement accuracy and low device cost, and solves the technical problems of low measurement accuracy, complex measurement operation and high device cost of the influence of existing hemming glue on the dimensional stability of sheet metal parts.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A device for measuring the influence of hemming glue for automobiles on the dimensional stability of sheet metal parts, comprising a measuring positioning seat and a dial indicator, wherein the measuring positioning seat comprises a first pressing seat, a second pressing seat and a connecting crossbeam, wherein the first pressing seat and the second pressing seat are respectively connected to both ends of the connecting crossbeam in the length direction, and the first pressing seat and the second pressing seat are respectively connected to the lower end surface of the connecting crossbeam, and the first pressing seat and the second pressing seat are respectively used to abut against the measuring surface of the sheet metal part to be measured;

[0007] The dial indicator is arranged on the connecting crossbeam, and the dial indicator is provided with a measuring rod. The connecting crossbeam is provided with a limit hole along the up and down directions. The measuring rod is movably arranged in the limit hole up and down. The measuring rod is located between the first pressure seat and the second pressure seat, and the bottom end of the measuring rod is in contact with the measuring surface of the sheet metal to be measured.

[0008] Optionally, the measuring device further comprises a clamping screw, and the connecting crossbeam is further provided with a locking hole, and the locking hole is arranged corresponding to the limiting hole;

[0009] One end of the locking hole is open, and the other end of the locking hole is connected to the limiting hole. After the clamping screw passes through the locking hole, it abuts against the measuring rod located in the limiting hole.

[0010] Optionally, the limiting hole and the locking hole are respectively arranged in the middle of the connecting beam.

[0011] Optionally, a plurality of the limiting holes and the locking holes are respectively provided, and the limiting holes and the locking holes are respectively arranged at intervals along the length direction of the connecting beam, and the limiting holes and the locking holes are arranged in a one-to-one correspondence.

[0012] Optionally, the longitudinal sections of the first press seat and the second press seat are triangular in shape, and the first press seat and the second press seat are respectively provided with abutment angles, and the abutment angles are used to abut against a measuring surface of the sheet metal part to be measured.

[0013] Optionally, the side surface of the first press seat away from the second press seat is a vertical plane, and the side surface of the second press seat away from the first press seat is a vertical plane.

[0014] Optionally, a lifting rod is provided at the top end of the measuring rod, and the lifting rod is used to pull the measuring rod to move in the up and down directions.

[0015] Optionally, a probe is provided at the bottom end of the measuring rod, and the outer surface of the probe is arc-shaped.

[0016] Optionally, the first pressure seat, the second pressure seat and the connecting beam are an integrally formed structure.

[0017] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0018] By using the measuring device for measuring the influence of the automobile hemming glue on the dimensional stability of the sheet metal part, the operation is convenient, the dial indicator is first reset to zero, and the deformation data of the sheet metal part can be obtained by observing the pointer data of the dial indicator during measurement, the measurement accuracy is high, and the device cost is low, thus solving the technical problems of low measurement accuracy, complex measurement operation and high device cost of the influence of the existing hemming glue on the dimensional stability of the sheet metal part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 The present invention is a schematic structural diagram of a device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Cross-sectional view of section AA.

[0022] Figure 3 It is a structural schematic diagram of a device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to an embodiment of the utility model, in which a device is placed on a measuring surface of a sheet metal part sample before curing.

[0023] Figure 4 The present invention is a schematic structural diagram of an embodiment of the present invention in which a device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts is placed on a measuring surface of a cured sheet metal part sample.

[0024] Figure 5 It is a structural schematic diagram of a device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to another embodiment of the utility model.

[0025] Figure 6 It is a schematic diagram of gluing using an automatic gluing robot according to an embodiment of the utility model.

[0026] Description of Figure Numbers:

[0027] Label name Label name 1 Measuring and positioning seat 11 First press seat 111 Abutment Angle 12 Second pressure seat 13 Connecting beams 131 Limit hole 132 Locking hole 2 Dial indicator 21 Measuring rod 211 Lifting rod 212 Probe 3 Compression screw 101 Exterior panel sheet metal parts 102 Inner panel sheet metal 103 Hemming glue 104 bolt 105 Nuts 106 Workbench 107 Automatic Gluing Robot

[0028] 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

[0029] 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.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the present invention, 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 the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] See also Figure 1 and Figure 2 A device for measuring the influence of hemming glue for automobiles on the dimensional stability of sheet metal parts, comprising a measuring positioning seat 1 and a dial indicator 2, wherein the measuring positioning seat 1 comprises a first pressing seat 11, a second pressing seat 12 and a connecting crossbeam 13, wherein the first pressing seat 11 and the second pressing seat 12 are respectively connected to the two ends of the connecting crossbeam 13 in the length direction, and the first pressing seat 11 and the second pressing seat 12 are respectively connected to the lower end surface of the connecting crossbeam 13, and the first pressing seat 11 and the second pressing seat 12 are respectively used to abut against the measuring surface of the sheet metal part to be measured;

[0034] The dial indicator 2 is arranged on the connecting beam 13, and the dial indicator 2 is provided with a measuring rod 21. The connecting beam 13 is penetrated with a limit hole 131 in the up and down directions. The measuring rod 21 is movably arranged in the limit hole 131 up and down. The measuring rod 21 is located between the first pressure seat 11 and the second pressure seat 12, and the bottom end of the measuring rod 21 abuts against the measuring surface of the sheet metal to be measured.

[0035] Before using the measuring device for measuring the influence of the automotive hemming glue on the dimensional stability of sheet metal parts, a sheet metal part sample using the hemming glue 103 is first made, and the making method is as follows: one side of the outer plate sheet metal part 101 is bent 90 degrees, and the hemming glue 103 is applied to the inner wall of the bent part of the outer plate sheet metal part 101. After the coating is completed, the inner plate sheet metal part 102 is placed overlapping with the outer plate sheet metal part 101, and then the bent part of the outer plate sheet metal part 101 is bent 180 degrees, so that the outer plate sheet metal part 101 and the inner plate sheet metal part 102 are closely attached. The outer panel sheet metal 101 and the inner panel sheet metal 102 are respectively penetrated with fixing holes, and the fixing holes of the outer panel sheet metal 101 are arranged corresponding to the fixing holes of the inner panel sheet metal 102, the bolts 104 are inserted into the fixing holes of the outer panel sheet metal 101 and the fixing holes of the inner panel sheet metal 102, and tightened with nuts 105, and gaskets can also be arranged between the outer panel sheet metal 101 and the inner panel sheet metal 102 corresponding to the nuts 105 to complete the production of the sheet metal sample using the hemming glue 103.

[0036] The method for measuring the influence of hemming glue on the dimensional stability of sheet metal parts before and after curing using this measuring device is as follows:

[0037] (1) See Figure 3 , press the first pressing seat 11 and the second pressing seat 12 respectively on the measuring surface of the inner plate sheet metal 102 (this measuring surface refers to the upper end surface of the inner plate sheet metal 102, that is, the side of the inner plate sheet metal 102 away from the outer plate sheet metal 101), and make the first pressing seat 11 and the second pressing seat 12 respectively abut against the nut 105 and the side surface of the outer plate sheet metal 101, at this time, the bottom end of the measuring rod 21 contacts the inner plate sheet metal 102, and the pointer of the dial indicator 2 is reset to zero;

[0038] (2) curing according to the type of the hemming glue 103, the single-component hemming glue is cured according to the baking temperature of the electrophoresis process, and the two-component hemming glue is cured at room temperature for 24 hours;

[0039] (3) After the curing is completed, the first pressing seat 11 and the second pressing seat 12 are pressed again on the measuring surface of the inner plate sheet metal 102, and the first pressing seat 11 and the second pressing seat 12 are respectively abutted against the nut 105 and the side surface of the outer plate sheet metal 101, see Figure 4 Since the inner panel sheet metal 102 may be deformed after curing, the measuring rod 21 is pulled upward so that the bottom end of the measuring rod 21 contacts the inner panel sheet metal 102. At this time, the pointer reading of the dial indicator 2 is read to obtain the sheet metal deformation value to evaluate the effect of the hemming glue on the dimensional stability of the sheet metal.

[0040] By using the measuring device for measuring the influence of the automotive hemming glue on the dimensional stability of the sheet metal parts, the operation is convenient, the dial indicator 2 is first reset to zero, and the deformation data of the sheet metal parts can be obtained by observing the pointer data of the dial indicator 2 during measurement, the measurement accuracy is high, and the device cost is low, thus solving the technical problems of low measurement accuracy, complex measurement operation and high device cost of the influence of the existing hemming glue on the dimensional stability of the sheet metal parts.

[0041] Further, the measuring device further comprises a clamping screw 3, and the connecting crossbeam 13 is further provided with a locking hole 132, and the locking hole 132 is arranged corresponding to the limiting hole 131;

[0042] One end of the locking hole 132 is open, and the other end of the locking hole 132 is connected to the limiting hole 131 . After the clamping screw 3 passes through the locking hole 132 , it abuts against the measuring rod 21 in the limiting hole 131 .

[0043] By setting the clamping screw 3, when measuring after curing is completed, the measuring rod 21 is pulled upward to make the bottom end of the measuring rod 21 contact the inner plate sheet metal 102. At this time, the clamping screw 3 is passed through the locking hole 132 and tightened. The clamping screw 3 abuts against the measuring rod 21 located in the limiting hole 131. When the clamping screw 3 abuts against the measuring rod 21, the position of the measuring rod 21 can be locked. At this time, the pointer of the dial indicator 2 is read to ensure that the position of the measuring rod 21 does not change during reading, thereby ensuring the accuracy of the reading.

[0044] Preferably, the limiting hole 131 and the locking hole 132 are respectively arranged in the middle of the connecting beam 13 .

[0045] Since one end of the inner panel sheet metal 102 is fixed to the outer panel sheet metal 101 by the folding glue 103, and the other end of the inner panel sheet metal 102 is fixed to the outer panel sheet metal 101 by the bolt 104, when the two ends of the sheet metal are fixed, the middle part will be subject to the restraining force from both ends. This restraining force will cause the stress to be concentrated in the middle part, so that deformation is usually more likely to occur in the middle position. At this time, the deformation in the middle position is usually the largest. By setting the limiting hole 131 and the locking hole 132 in the middle of the connecting beam 13, it is convenient to measure the deformation in the middle position of the sheet metal.

[0046] See also Figure 5 In another embodiment of the utility model, a plurality of the limiting holes 131 and the locking holes 132 are respectively provided, and the limiting holes 131 and the locking holes 132 are respectively arranged at intervals along the length direction of the connecting beam 13, and the limiting holes 131 and the locking holes 132 are arranged one by one.

[0047] By setting a plurality of the limiting holes 131 and a plurality of the locking holes 132, and the limiting holes 131 and the locking holes 132 are set in one-to-one correspondence, the dial indicator 2 can be placed and limited in the limiting holes 131 at different positions during measurement, and then the deformation values ​​of different positions of the inner panel sheet metal 102 can be measured (i.e., multi-point measurement is achieved).

[0048] In some optional embodiments, a sleeve is provided at the bottom of the dial of the dial gauge 2, and the measuring rod 21 is movably arranged in the sleeve, and the sleeve is inserted into the limiting hole 131. At this time, the sleeve and the inner wall of the limiting hole 131 are interference-fitted to fix the position of the dial gauge 2. When the position of the dial gauge 2 needs to be changed, the dial gauge 2 can be inserted into other limiting holes 131 through the sleeve, thereby realizing the measurement of deformation values ​​at different positions.

[0049] Preferably, the longitudinal sections of the first press seat 11 and the second press seat 12 are triangular in shape, and the first press seat 11 and the second press seat 12 are respectively provided with abutment angles 111, and the abutment angles 111 are used to abut against the measuring surface of the sheet metal to be measured.

[0050] Since the inner panel sheet metal 102 may have an uneven surface after deformation, the cross-sectional shape of the first press seat 11 and the second press seat 12 is set to a triangle, and the abutment angle 111 is used to abut the measuring surface of the sheet metal to be measured, so as to avoid affecting the stability of the first press seat 11 and the second press seat 12 abutting against the measuring surface due to the uneven surface of the inner panel sheet metal 102.

[0051] Preferably, the side surface of the first press seat 11 away from the second press seat 12 is a vertical plane, and the side surface of the second press seat 12 away from the first press seat 11 is a vertical plane.

[0052] By setting the side of the first pressure seat 11 away from the second pressure seat 12 as a vertical plane, and setting the side of the second pressure seat 12 away from the first pressure seat 11 as a vertical plane, the first pressure seat 11 and the second pressure seat 12 can abut against the nut 105 and the side of the outer panel sheet metal 101 respectively with strong abutment stability.

[0053] Preferably, a lifting rod 211 is provided at the top end of the measuring rod 21, and the lifting rod 211 is used to pull the measuring rod 21 to move in the up and down directions.

[0054] By arranging the lifting rod 211 at the top of the measuring rod 21, it is convenient to pull the measuring rod 21 upwards when measuring, thereby making the measuring device of the influence of the automotive hemming glue on the dimensional stability of the sheet metal part convenient.

[0055] Specifically, a probe 212 is disposed at the bottom end of the measuring rod 21 , and the outer surface of the probe 212 is arc-shaped.

[0056] The measuring head 212 is provided at the bottom end of the measuring rod 21 . The measuring head 212 is used to abut against the inner plate sheet metal part 102 . The outer surface of the measuring head 212 is arc-shaped, so that the contact between the measuring head 212 and the inner plate sheet metal part 102 is smoother.

[0057] Preferably, the first pressure seat 11, the second pressure seat 12 and the connecting beam 13 are an integrally formed structure.

[0058] By arranging the first pressure seat 11, the second pressure seat 12 and the connecting beam 13 as an integrally formed structure, not only is processing convenient, but the structural stability of the measuring and positioning seat 1 can also be improved, thereby ensuring that the dial indicator will not swing during the measurement process, and effectively ensuring the accuracy of the measurement result.

[0059] Further explanation: When making a sheet metal sample using hemming glue 103, an automatic glue coating robot can also be used for coating. Figure 6 The manufacturing method is as follows: bend one side of the outer plate sheet metal 101 by 90°, place it on the workbench 106, use the automatic glue coating robot 107 to accurately position it, apply the hemming glue 103 with a diameter of about 2mm at a position 7mm away from the bending part of the outer plate sheet metal 101, and after the coating is completed, overlap the inner plate sheet metal 102 and the outer plate sheet metal 101, and then bend the bending part of the outer plate sheet metal 101 by 180°, so that the outer plate sheet metal 101 and the inner plate sheet metal 102 are closely attached, and the outer plate sheet metal 101 is tightly attached to the inner plate sheet metal 102. The outer plate sheet metal 101 and the inner plate sheet metal 102 are respectively penetrated by fixing holes, and the fixing holes of the outer plate sheet metal 101 are arranged corresponding to the fixing holes of the inner plate sheet metal 102, the bolts 104 are inserted into the fixing holes of the outer plate sheet metal 101 and the fixing holes of the inner plate sheet metal 102, and tightened with nuts 105, and gaskets can also be arranged between the outer plate sheet metal 101 and the inner plate sheet metal 102 corresponding to the nuts 105 to complete the production of the sheet metal sample using the hemming glue 103.

[0060] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A device for measuring the effect of automotive hemming adhesive on the dimensional stability of sheet metal parts, characterized in that: It includes a measuring and positioning seat and a dial indicator, wherein the measuring and positioning seat includes a first pressure seat, a second pressure seat and a connecting crossbeam, the two ends of the connecting crossbeam in the length direction are respectively connected to the first pressure seat and the second pressure seat, and the first pressure seat and the second pressure seat are respectively connected to the lower end surface of the connecting crossbeam, and the first pressure seat and the second pressure seat are respectively used to abut against the measuring surface of the sheet metal part to be measured; The dial indicator is arranged on the connecting crossbeam, and the dial indicator is provided with a measuring rod. The connecting crossbeam is provided with a limit hole along the up and down directions. The measuring rod is movably arranged in the limit hole up and down. The measuring rod is located between the first pressure seat and the second pressure seat, and the bottom end of the measuring rod is in contact with the measuring surface of the sheet metal to be measured.

2. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 1, characterized in that: The measuring device further comprises a clamping screw, and the connecting crossbeam is further provided with a locking hole, and the locking hole is arranged corresponding to the limiting hole; One end of the locking hole is open, and the other end of the locking hole is connected to the limiting hole. After the clamping screw passes through the locking hole, it abuts against the measuring rod located in the limiting hole.

3. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 2, characterized in that: The limiting hole and the locking hole are respectively arranged in the middle of the connecting beam.

4. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 2, characterized in that: A plurality of the limiting holes and the locking holes are respectively provided, and the limiting holes and the locking holes are respectively arranged at intervals along the length direction of the connecting crossbeam, and the limiting holes and the locking holes are arranged in a one-to-one correspondence.

5. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 1, characterized in that: The cross-sectional shapes of the longitudinal sections of the first press seat and the second press seat are respectively triangular, and the first press seat and the second press seat are respectively provided with abutment angles, and the abutment angles are used to abut against the measuring surface of the sheet metal part to be measured.

6. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 5, characterized in that: The side surface of the first press seat away from the second press seat is a vertical plane, and the side surface of the second press seat away from the first press seat is a vertical plane.

7. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 1, characterized in that: A lifting rod is provided at the top end of the measuring rod, and the lifting rod is used to pull the measuring rod to move in the up and down directions.

8. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 1, characterized in that: A probe is provided at the bottom end of the measuring rod, and the outer surface of the probe is arc-shaped.

9. The device for measuring the influence of automotive hemming adhesive on the dimensional stability of sheet metal parts according to claim 1, characterized in that: The first pressure seat, the second pressure seat and the connecting beam are an integrally formed structure.

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